SLAS653C February   2010  – February 2017 TLV320AIC3120

PRODUCTION DATA.  

  1. Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. Revision History
  3. Device Comparison
  4. Pin Configuration and Functions
    1. 4.1 Pin Attributes
  5. Specifications
    1. 5.1  Absolute Maximum Ratings
    2. 5.2  ESD Ratings
    3. 5.3  Recommended Operating Conditions
    4. 5.4  Thermal Information
    5. 5.5  Electrical Characteristics
    6. 5.6  Power Dissipation Ratings
    7. 5.7  I2S, LJF, and RJF Timing in Master Mode
    8. 5.8  I2S, LJF, and RJF Timing in Slave Mode
    9. 5.9  DSP Timing in Master Mode
    10. 5.10 DSP Timing in Slave Mode
    11. 5.11 I2C Interface Timing
    12. 5.12 Typical Characteristics
      1. 5.12.1 Audio ADC Performance
      2. 5.12.2 DAC Performance
      3. 5.12.3 Class-D Speaker Driver Performance
      4. 5.12.4 Analog Bypass Performance H
      5. 5.12.5 MICBIAS Performance H
  6. Parameter Measurement Information
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1  Power-Supply Sequence
      2. 7.3.2  Reset
      3. 7.3.3  Device Start-Up Lockout Times
      4. 7.3.4  PLL Start-Up
      5. 7.3.5  Power-Stage Reset
      6. 7.3.6  Software Power Down
      7. 7.3.7  Audio Analog I/O
      8. 7.3.8  miniDSP
        1. 7.3.8.1 Software
      9. 7.3.9  Digital Processing Low-Power Modes
        1. 7.3.9.1 ADC, Mono, 48 kHz, DVDD = 1.8 V, AVDD = 3.3 V
        2. 7.3.9.2 ADC, Mono, 8 kHz, DVDD = 1.8 V, AVDD = 3.3 V
        3. 7.3.9.3 DAC Playback on Headphones, Mono, 48 kHz, DVDD = 1.8 V, AVDD = 3.3 V, HPVDD = 3.3 V
        4. 7.3.9.4 DAC Playback on Headphones, Mono, 8 kHz, DVDD = 1.8 V, AVDD = 3.3 V, HPVDD = 3.3 V
      10. 7.3.10 Audio ADC and Analog Inputs
        1. 7.3.10.1 MICBIAS and Microphone Preamplifier
        2. 7.3.10.2 Automatic Gain Control (AGC)
        3. 7.3.10.3 Delta-Sigma ADC
        4. 7.3.10.4 ADC Decimation Filtering and Signal Processing
          1. 7.3.10.4.1 ADC Processing Blocks
          2. 7.3.10.4.2 ADC Processing Blocks - Signal Chain Details
            1. 7.3.10.4.2.1 First-Order IIR, AGC, Filter A
            2. 7.3.10.4.2.2 Five Biquads, First-Order IIR, AGC, Filter A
            3. 7.3.10.4.2.3 25-Tap FIR, First-Order IIR, AGC, Filter A
            4. 7.3.10.4.2.4 First-Order IIR, AGC, Filter B
            5. 7.3.10.4.2.5 Three Biquads, First-Order IIR, AGC, Filter B
            6. 7.3.10.4.2.6 20-Tap FIR, First-Order IIR, AGC, Filter B
            7. 7.3.10.4.2.7 First-Order IIR, AGC, Filter C
            8. 7.3.10.4.2.8 Five Biquads, First-Order IIR, AGC, Filter C
            9. 7.3.10.4.2.9 25-Tap FIR, First-Order IIR, AGC, Filter C
          3. 7.3.10.4.3 User-Programmable Filters
            1. 7.3.10.4.3.1 First-Order IIR Section
            2. 7.3.10.4.3.2 Biquad Section
            3. 7.3.10.4.3.3 FIR Section
          4. 7.3.10.4.4 ADC Digital Decimation Filter Characteristics
            1. 7.3.10.4.4.1 Decimation Filter A
            2. 7.3.10.4.4.2 Decimation Filter B
            3. 7.3.10.4.4.3 Decimation Filter C
          5. 7.3.10.4.5 ADC Data Interface
        5. 7.3.10.5 Updating ADC Digital Filter Coefficients During Record
        6. 7.3.10.6 Digital Microphone Function
        7. 7.3.10.7 DC Measurement
        8. 7.3.10.8 ADC Setup
      11. 7.3.11 Example Register Setup to Record Analog Data Through ADC to Digital Out
      12. 7.3.12 Audio DAC and Audio Analog Outputs
        1. 7.3.12.1  DAC
          1. 7.3.12.1.1 DAC Processing Blocks
          2. 7.3.12.1.2 DAC Processing Blocks — Signal Chain Details
            1. 7.3.12.1.2.1 Three Biquads, Filter A
            2. 7.3.12.1.2.2 Six Biquads, First-Order IIR, DRC, Filter A or B
            3. 7.3.12.1.2.3 Six Biquads, First-Order IIR, Filter A or B
            4. 7.3.12.1.2.4 IIR, Filter B or C
            5. 7.3.12.1.2.5 Four Biquads, DRC, Filter B
            6. 7.3.12.1.2.6 Four Biquads, Filter B
            7. 7.3.12.1.2.7 Four Biquads, First-Order IIR, DRC, Filter C
            8. 7.3.12.1.2.8 Four Biquads, First-Order IIR, Filter C
            9. 7.3.12.1.2.9 Five Biquads, DRC, Beep Generator, Filter A
          3. 7.3.12.1.3 DAC User-Programmable Filters
            1. 7.3.12.1.3.1 First-Order IIR Section
            2. 7.3.12.1.3.2 Biquad Section
          4. 7.3.12.1.4 DAC Interpolation Filter Characteristics
            1. 7.3.12.1.4.1 Interpolation Filter A
            2. 7.3.12.1.4.2 Interpolation Filter B
            3. 7.3.12.1.4.3 Interpolation Filter C
        2. 7.3.12.2  DAC Digital-Volume Control
        3. 7.3.12.3  Volume Control Pin
        4. 7.3.12.4  Dynamic Range Compression
          1. 7.3.12.4.1 DRC Threshold
          2. 7.3.12.4.2 DRC Hysteresis
          3. 7.3.12.4.3 DRC Hold
          4. 7.3.12.4.4 DRC Attack Rate
          5. 7.3.12.4.5 DRC Decay Rate
          6. 7.3.12.4.6 Example Setup for DRC
        5. 7.3.12.5  Headset Detection
        6. 7.3.12.6  Interrupts
        7. 7.3.12.7  Key-Click Functionality With Beep Generator (PRB_P25)
        8. 7.3.12.8  Programming DAC Digital Filter Coefficients
        9. 7.3.12.9  Updating DAC Digital Filter Coefficients During PLAY
        10. 7.3.12.10 Digital Mixing and Routing
        11. 7.3.12.11 Analog Audio Routing
          1. 7.3.12.11.1 Analog Output Volume Control
          2. 7.3.12.11.2 Headphone Analog-Output Volume Control
          3. 7.3.12.11.3 Class-D Speaker Analog Output Volume Control
        12. 7.3.12.12 Analog Outputs
          1. 7.3.12.12.1 Headphone Drivers
          2. 7.3.12.12.2 Speaker Drivers
        13. 7.3.12.13 Audio-Output Stage-Power Configurations
        14. 7.3.12.14 DAC Setup
        15. 7.3.12.15 Example Register Setup to Play Digital Data Through DAC and Headphone/Speaker Outputs
      13. 7.3.13 CLOCK Generation and PLL
        1. 7.3.13.1 PLL
      14. 7.3.14 Timer
      15. 7.3.15 Digital Audio and Control Interface
        1. 7.3.15.1 Digital Audio Interface
          1. 7.3.15.1.1 Right-Justified Mode
          2. 7.3.15.1.2 Left-Justified Mode
          3. 7.3.15.1.3 I2S Mode
          4. 7.3.15.1.4 DSP Mode
        2. 7.3.15.2 Primary and Secondary Digital Audio Interface Selection
        3. 7.3.15.3 Control Interface
          1. 7.3.15.3.1 I2C Control Mode
    4. 7.4 Register Map
      1. 7.4.1 TLV320AIC3120 Register Map
      2. 7.4.2 Registers
        1. 7.4.2.1  Control Registers, Page 0 (Default Page): Clock Multipliers, Dividers, Serial Interfaces, Flags, Interrupts, and GPIOs
        2. 7.4.2.2  Control Registers, Page 1: DAC and ADC Routing, PGA, Power-Controls, and MISC Logic-Related Programmability
        3. 7.4.2.3  Control Registers, Page 3: MCLK Divider for Programmable Delay Timer
        4. 7.4.2.4  Control Registers, Page 4: ADC Digital Filter Coefficients
        5. 7.4.2.5  Control Registers, Page 5: ADC Programmable Coefficients RAM (65:127)
        6. 7.4.2.6  Control Registers, Page 8: DAC Programmable Coefficients RAM Buffer A (1:63)
        7. 7.4.2.7  Control Registers, Page 9: DAC Programmable Coefficients RAM Buffer A (65:127)
        8. 7.4.2.8  Control Registers, Page 10: DAC Programmable Coefficients RAM Buffer A (129:191)
        9. 7.4.2.9  Control Registers, Page 11: DAC Programmable Coefficients RAM Buffer A (193:255)
        10. 7.4.2.10 Control Registers, Page 12: DAC Programmable Coefficients RAM Buffer B (1:63)
        11. 7.4.2.11 Control Registers, Page 13: DAC Programmable Coefficients RAM Buffer B (65:127)
        12. 7.4.2.12 Control Registers, Page 14: DAC Programmable Coefficients RAM Buffer B (129:191)
        13. 7.4.2.13 Control Registers, Page 15: DAC Programmable Coefficients RAM Buffer B (193:255)
        14. 7.4.2.14 Control Registers, Page 32: ADC DSP Engine Instruction RAM (0:31)
          1. 7.4.2.14.1 Page 32 / Register 5 (0x05) Through Page 32 / Register 97 (0x61)
        15. 7.4.2.15 Control Registers, Pages 33-43: ADC DSP Engine Instruction RAM (32:63) Through (352:383)
        16. 7.4.2.16 Control Registers, Page 64: DAC DSP Engine Instruction RAM (0:31)
          1. 7.4.2.16.1 Page 64 / Register 5 Through Page 64 / Register 97
        17. 7.4.2.17 Control Registers, Pages 65 to 95: DAC DSP Engine Instruction RAM (32:63) Through (992:1023)
  8. Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Receiving Notification of Documentation Updates
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical Packaging and Orderable Information
    1. 12.1 Packaging Information

パッケージ・オプション

メカニカル・データ(パッケージ|ピン)
サーマルパッド・メカニカル・データ
発注情報

Detailed Description

Overview

The TLV320AIC3120 device is a highly integrated mono-audio DAC and mono ADC for portable computing, communication, and entertainment applications. A register-based architecture eases integration with microprocessor-based systems through standard serial-interface buses. This device supports the two-wire I2C bus interface which provides full register access. All peripheral functions are controlled through these registers and the onboard state machines.

The TLV320AIC3120 device consists of the following blocks:

  • Microphone interfaces (analog and digital)
  • Audio codec (mono ADC and mono DAC)
  • AGC and DRC
  • Two miniDSP digital signal-processing blocks (record and playback paths)
  • Mono headphone and lineout amplifier
  • Class-D mono amplifier for 4-Ω or 8–Ω speakers
  • Pin-controlled or register-controlled volume level
  • Power-down de-pop and power-up soft start
  • Analog inputs
  • I2C control interface
  • Power-down control block

Following a toggle of the RESET pin or a software reset, the device operates in the default mode. The I2C interface is used to write to the control registers to configure the device.

The I2C address assigned to the TLV320AIC3120 device is 001 1000. This device always operates in an I2C slave mode. This device always operates in an I2C slave mode. All registers are 8-bit, and all writable registers have read-back capability. The device auto-increments to support sequential addressing and can be used with the I2C fast mode. When the device is reset, all appropriate registers are updated by the host processor to configure the device as needed by the user.

Functional Block Diagram

TLV320AIC3120 B0205-06_LAS653.gif

Feature Description

Power-Supply Sequence

The TLV320AIC3120 requires multiple power supply rails for operation. All the power rails must be powered up for the device to operate at the fullest potention. The following is the recommended power-up sequencing for proper operation:

  1. Power up SPKVDD
  2. Power up IOVDD
  3. Power up DVDD shortly after IOVDD
  4. Power up AVDD and HPVDD

Although not necessary, if the system requires, during shutdown, remove the power supplies in the reverse order of the above sequence.

Reset

The TLV320AIC3120 internal logic must be initialized to a known condition for proper device function. To initialize the device to its default operating condition, the hardware reset pin (RESET) must be pulled low for at least 10 ns. For this initialization to work, both the IOVDD and DVDD supplies must be powered up. TI recommends that while the DVDD supply powers up, the RESET pin is pulled low.

The device can also be reset via software reset. Writing a 1 into page 0 / register 1, bit D0 resets the device.

Device Start-Up Lockout Times

After the TLV320AIC3120 is initialized through hardware reset at power up or software reset, the internal memories are initialized to default values. This initialization takes place within 1 ms after pulling the RESET signal high. During this initialization phase, no register-read or register-write operation should be performed on ADC or DAC coefficient buffers. Also, no block within the codec should be powered up during the initialization phase.

PLL Start-Up

Whenever the PLL is powered up, a start-up delay of approximately of 10 ms occurs after the power-up command of the PLL and before the clocks are available to the codec. This delay is to ensure stable operation of the PLL and clock-divider logic.

Power-Stage Reset

The power-stage-only reset is used to reset the device after an overcurrent latching shutdown has occurred. Using this reset re-enables the output stage without resetting all of the registers in the device. Each of the two power stages has its own dedicated reset bit. The headphone power-stage reset is performed by setting page 1 / register 31, bit D7 for HPOUT. The speaker power-stage reset is performed by setting page 1 / register 32, bit D7 for SPKP and SPKM.

Software Power Down

By default, all circuit blocks are powered down following a reset condition. Hardware power up of each circuit block can be controlled by writing to the appropriate control register. This approach allows the lowest power-supply current for the functionality required. However, when a block is powered down, all of the register settings are maintained as long as power is still being applied to the device.

Audio Analog I/O

The TLV320AIC3120 has a mono audio DAC and a mono ADC. The device supports a wide range of analog interfaces to support different headsets and analog outputs. The TLV320AIC3120 has features to interface output drivers (8-Ω, 16-Ω, 32-Ω) and a microphone PGA with AGC control.

miniDSP

The TLV320AIC3120 device features two miniDSP cores. The first miniDSP core is tightly coupled to the ADC; the second miniDSP core is tightly coupled to the DAC. The fully programmable algorithms for the miniDSP must be loaded into the device after power up. The miniDSPs have direct access to the digital audio stream on the ADC and on the DAC side, offering the possibility for advanced, very low-group-delay DSP algorithms.

The ADC miniDSP has 384 programmable instructions, 256 data memory locations, and 128 programmable coefficients. The DAC miniDSP has 1024 programmable instructions, 896 data memory locations, and 512 programmable coefficients (in the adaptive mode, there are two banks of 256 programmable coefficients each).

Software

Software development for the TLV320AIC3120 is supported through TI's comprehensive PurePath™ Studio software development environment. PurePath is a powerful and easy-to-use tool designed specifically to simplify software development on Texas Instruments miniDSP audio platforms. The graphical development environment consists of a library of common audio functions that can be dragged and dropped into an audio signal flow and graphically connected together. The DSP code can then be assembled from the graphical signal flow with the click of a mouse.

See the TLV320AIC3120 product folder on www.ti.com to learn more about PurePath Studio software and the latest status on available, ready-to-use DSP algorithms.

Digital Processing Low-Power Modes

The TLV320AIC3120 device can be tuned to minimize power dissipation, to maximize performance, or to an operating point between the two extremes to best fit the application. The choice of processing blocks, PRB_P1 to PRB_P25 for mono playback and PRB_R4 to PRB_R18 for mono recording, also influences the power consumption. In fact, the numerous processing blocks have been implemented to offer a choice among configurations having a different balance of power optimization and signal-processing capabilities.

ADC, Mono, 48 kHz, DVDD = 1.8 V, AVDD = 3.3 V

AOSR = 128, Processing Block = PRB_R4 (Decimation Filter A)

Power consumption = 9.01 mW

Table 7-1 PRB_R4 Alternative Processing Blocks, 9.01 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_R5 A 0.23
PRB_R6 A 0.22

AOSR = 64, Processing Block = PRB_R11 (Decimation Filter B)

Power consumption = 7.99 mW

Table 7-2 PRB_R11 Alternative Processing Blocks, 7.99 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_R4 A 0.43
PRB_R5 A 0.67
PRB_R6 A 0.66
PRB_R10 B –0.14
PRB_R12 B 0.04

ADC, Mono, 8 kHz, DVDD = 1.8 V, AVDD = 3.3 V

AOSR = 128, Processing Block = PRB_R4 (Decimation Filter A)

Power consumption = 6.77 mW

Table 7-3 PRB_R4 Alternative Processing Blocks, 6.77 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_R5 A 0.03
PRB_R6 A 0.03

AOSR = 64, Processing Block = PRB_R11 (Decimation Filter B)

Power consumption = 6.61 mW

Table 7-4 PRB_R11 Alternative Processing Blocks, 6.61 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_R4 A 0.07
PRB_R5 A 0.11
PRB_R6 A 0.11
PRB_R10 B –0.02
PRB_R12 B 0.01

DAC Playback on Headphones, Mono, 48 kHz, DVDD = 1.8 V, AVDD = 3.3 V,
HPVDD = 3.3 V

DOSR = 128, Processing Block = PRB_P12 (Interpolation Filter B)

Power consumption = 15.4 mW

Table 7-5 PRB_P12 Alternative Processing Blocks, 15.4 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_P4 A 0.57
PRB_P5 A 1.48
PRB_P6 A 1.08
PRB_P13 B 0.56
PRB_P14 B 0.27
PRB_P15 B 0.89
PRB_P16 B 0.31

DOSR = 64, Processing Block = PRB_P12 (Interpolation Filter B)

Power consumption = 15.54 mW

Table 7-6 PRB_P12 Alternative Processing Blocks, 15.54 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_P4 A 0.37
PRB_P5 A 1.23
PRB_P6 A 1.15
PRB_P13 B 0.43
PRB_P14 B 0.13
PRB_P15 B 0.85
PRB_P16 B 0.21

DAC Playback on Headphones, Mono, 8 kHz, DVDD = 1.8 V, AVDD = 3.3 V,
HPVDD = 3.3 V

DOSR = 768, Processing Block = PRB_P12 (Interpolation Filter B)

Power consumption = 14.49 mW

Table 7-7 PRB_P12 Alternative Processing Blocks, 14.49 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_P4 A –0.04
PRB_P5 A 0.2
PRB_P6 A –0.01
PRB_P13 B 0.1
PRB_P14 B 0.05
PRB_P15 B –0.03
PRB_P16 B 0.07

DOSR = 384, Processing Block = PRB_P12 (Interpolation Filter B)

Power consumption = 14.42 mW

Table 7-8 PRB_P12 Alternative Processing Blocks, 14.42 mW

PROCESSING BLOCK FILTER ESTIMATED POWER CHANGE (mW)
PRB_P4 A 0.16
PRB_P5 A 0.3
PRB_P6 A 0.2
PRB_P13 B 0.15
PRB_P14 B 0.07
PRB_P15 B 0.18
PRB_P16 B 0.09

Audio ADC and Analog Inputs

MICBIAS and Microphone Preamplifier

The TLV320AIC3120 device includes a microphone bias circuit that sources up to 4 mA of current and is programmable to a 2-V, 2.5-V, or AVDD level. The level is controlled by writing to page 1 / register 46, bits D1–D0. Table 7-9 lists this functionality.

Table 7-9 MICBIAS Settings

D1 D0 FUNCTIONALITY
0 0 MICBIAS output is powered down
0 1 MICBIAS output is powered to 2 V
1 0 MICBIAS output is powered to 2.5 V
1 1 MICBIAS output is powered to AVDD

During normal operation, MICBIAS can be set to 2.5 V for better performance. However, based on the model of the selected microphone, optimal performance can be obtained at another setting and therefore the performance at a given setting must be verified.

The lowest current consumption occurs when MICBIAS is powered down. The next-lowest current consumption occurs when MICBIAS is set at AVDD. The highest current consumption occurs when MICBIAS is set at 2 V.

Because of the oversampling nature of the audio ADC and the integrated digital-decimation filtering, requirements for analog anti-aliasing filtering are very relaxed. The TLV320AIC3120 device integrates a second-order analog anti-aliasing filter with 20-dB attenuation at 1 MHz. This filter, combined with the digital decimal filter, provides sufficient anti-aliasing filtering without requiring any external components.

The MIC PGA supports analog gain control from 0 dB to 59.5 dB in steps of 0.5 dB. These gain levels are controlled by writing to page 1 / register 47, bits D6–D0. The PGA gain changes are implemented with internal soft-stepping. This soft-stepping ensures that volume-control changes occur smoothly with no audible artifacts. On reset, the MIC PGA gain defaults to a mute condition, with soft-stepping enabled. The ADC soft-stepping control is enabled or disabled by writing to page 0 / register 81, bits D1–D0. ADC soft-stepping timing is provided by the internal oscillator and internal divider logic block.

The input feed-forward resistance for the MIC1LP input of the microphone PGA stage has three settings, 10 kΩ, 20 kΩ, and 40 kΩ, which are controlled by writing to page 1 / register 48, bits D7 and D6. The input feed-forward resistance value selected affects the gain of the microphone PGA. The ADC PGA gain for the MIC1LP input depends on the setting of page1 / register 48 and page 1 / register 49, bits D7–D6. If D7–D6 are set to 01, then the ADC PGA has 6 dB more gain with respect to the value programmed using page 1 / register 47. If D7–D6 are set to 10, then the ADC PGA has the same gain as programmed using page 1 / register 47. If D7–D6 are set to 11, then the ADC PGA has 6 dB less gain with respect to the value programmed using page 1 / register 47. The same gain scaling is also valid for the MIC1RP and MIC1LM input, based on the feed-forward resistance selected using page 1 / register 48, bits D5–D2.

Table 7-10 lists the effective gain applied by the PGA.

Table 7-10 PGA Gain Versus Input Impedance

PAGE 1 / REGISTER 47
D6–D0
EFFECTIVE GAIN APPLIED BY PGA
SINGLE-ENDED DIFFERENTIAL
RIN = 10 kΩ RIN = 20 kΩ RIN = 40 kΩ RIN = 10 kΩ RIN = 20 kΩ RIN = 40 kΩ
000 0000 6 dB 0 dB –6 dB 12 dB 6 dB 0 dB
000 0001 6.5 dB 0.5 dB –5.5 dB 12.5 dB 6.5 dB 0.5 dB
000 0010 7 dB 1 dB –5 dB 13 dB 7 dB 1 dB
... ... ... ... ... ... ...

The MIC PGA gain is either controlled by an AGC loop or as a fixed gain. See for the various analog input routings to the MIC PGA that are supported in the single-ended and differential configurations. The AGC is enabled by writing to page 0 / register 86, bit D7. If the AGC is not enabled, then setting a fixed gain occurs by writing to page 1 / register 47, bits D6–D0. Because the TLV320AIC3120 device supports soft-stepping gain changes, a read-only flag on page 0 / register 36, bit D7 is set whenever the gain applied by PGA equals the desired value set by the gain register. The MIC PGA is enabled by writing to page 1 / register 47, bit D7. ADC muting occurs by writing to page 0 / register 82, bit D7 and page 1 / register 47, bit D7. Disabling the MIC PGA sets the gain to 0 dB. Muting the ADC causes the digital output to mute so that the output value remains fixed. When soft-stepping is enabled, the CODEC_CLKIN signal must stay active until after the ADC power-down register is written, in order to ensure that soft-stepping to mute has had time to complete. When the ADC POWER UP flag is no longer set, the CODEC_CLKIN signal can shut down.

Automatic Gain Control (AGC)

The TLV320AIC3120 includes automatic gain control (AGC) for the microphone inputs. AGC can be used to maintain nominally constant output-signal amplitude when recording speech signals. This circuitry automatically adjusts the MIC PGA gain as the input signal becomes overly loud or very weak, such as when a person speaking into a microphone moves closer to or farther from the microphone. The AGC algorithm has several programmable settings, including target gain, attack and decay time constants, noise threshold, and maximum PGA applicable, that allow the algorithm to be fine-tuned for any particular application. The algorithm uses the absolute average of the signal (which is the average of the absolute value of the signal) as a measure of the nominal amplitude of the output signal. Because the gain can be changed at the sample interval time, the AGC algorithm operates at the ADC_fS clock rate.

Target level represents the nominal output level at which the AGC attempts to hold the ADC output signal. The TLV320AIC3120 allows programming of eight different target levels, which can be programmed from –5.5 dB to –24 dB relative to a full-scale signal. Because the TLV320AIC3120 reacts to the signal absolute average and not to peak levels, TI recommends that the target level be set with enough margin to avoid clipping at the occurrence of loud sounds.

An AGC low-pass filter is used to help determine the average level of the input signal. This average level is compared to the programmed detection levels in the AGC to provide the correct functionality. This low-pass filter is in the form of a first-order IIR filter. Programming this filter is done by writing to page 4 / register 2 through page 4 / register 7. Two 8-bit registers are used to form the 16-bit digital coefficient as shown on the register map. In this way, a total of six registers are programmed to form the three IIR coefficients.

Attack time determines how quickly the AGC circuitry reduces the PGA gain when the input signal is too loud. Programming the attack time is done by writing to page 0 / register 89, bits D7–D0.

Decay time determines how quickly the PGA gain is increased when the input signal is too low. Programming the decay time is done by writing to page 0 / register 90, bits D7–D0.

Noise threshold is a reference level. If the input speech average value falls below the noise threshold, the AGC considers it as a silence and hence brings down the gain to 0 dB in steps of 0.5 dB every sample period and sets the noise-threshold flag. The gain stays at 0 dB unless the input speech signal average rises above the noise-threshold setting. This ensures that noise is not amplified in the absence of speech. The noise-threshold level in the AGC algorithm is programmable from –30 dB to –90 dB for the microphone input. When the AGC noise threshold is set to –70 dB, –80 db, or –90 dB, the microphone input maximum PGA applicable setting must be greater than or equal to 11.5 dB, 21.5 dB, or 31.5 dB, respectively. This operation includes debounce and hysteresis to prevent the AGC gain from cycling between high gain and 0 dB when signals are near the noise threshold level. When the noise-threshold flag is set, the status of the gain applied by the AGC and the saturation flag must be ignored by the system software. Programming the noise debounce is done by writing to page 0 / register 91, bits D4–D0. Programming the signal debounce is done by writing to page 0 / register 92, bits D3–D0.

Max PGA applicable allows the user to restrict the maximum gain applied by the AGC. This can be used for limiting PGA gain in situations where environmental noise is greater than the programmed noise threshold. Microphone input maximum PGA can be programmed from 0 dB to 59.5 dB in steps of 0.5 dB. Programming the maximum PGA gain allowed by the AGC is done by writing to page 0 / register 88, bits D6–D0.

See Table 7-11 for various AGC programming options. AGC can be used only if the microphone input is routed to the ADC channel.

Table 7-11 AGC Settings(1)

CONTROL REGISTER BIT FUNCTION
36 D5 (read-only) AGC saturation flag
39 D3 (read-only) ADC saturation flag
45 D6 (read-only) Signal to level setting of noise threshold
86 D7 AGC enable
86 D6–D4 Target level
87 D7–D6 Hysteresis
87 D5–D1 Noise threshold
88 D6–D0 Maximum PGA applicable
89 D7–D0 Time constants (attack time)
90 D7–D0 Time constants (decay time)
91 D4–D0 Debounce time (noise)
92 D3–D0 Debounce time (signal)
93 D7–D0 (read-only) Gain applied by AGC
All registers shown in this table are located on page 0.
TLV320AIC3120 w0002-01_las510.gif Figure 7-1 AGC Characteristics

The AGC settings should be set based on user and system conditions such as microphone selection and sensitivity, acoustics (plastics) around the microphone which affect the microphone pattern, expected distance and direction between microphone and sound source, and acoustic background noise.

One example of AGC code follows, but actual use of code should be verified based on application usage. Note that the AGC code should be set up before powering up the ADC.

####################### AGC ENABLE EXAMPLE CODE #####################
## Switch to page 0
w 30 00 00
# Set AGC enable and Target Level = -10 dB
# Target level can be set lower if clipping occurs during speech
# Target level is adjusted considering Max Gain also
w 30 56 A0 # AGC hysteresis=DISABLE, noise threshold = -90dB
# Noise threshold should be set at higher level if noisy background is present in application
w 30 57 FE # AGC maximum gain= 40 dB
# Higher Max gain is a trade off between gaining up a low sensitivity MIC, and the background
# acoustic noise
# Microphone bias voltage (MICBIAS) level can be used to change the Microphone Sensitivity
w 30 58 50
# Attack time=864/Fs w 30 59 68
# Decay time=22016/Fs
w 30 5A A8
# Noise debounce 0 ms
# Noise debounce time can be increased if needed
w 30 5B 00
# Signal debounce 0 ms
# Signal debounce time can be increased if needed
w 30 5C 00
######################## END of AGC SET UP #################################

Delta-Sigma ADC

The analog-to-digital converter has a delta-sigma modulator with an oversampling ratio (AOSR) up to 128. The ADC can support a maximum output rate of 192 kHz.

ADC power up is controlled by writing to page 0 / register 81, bit D7. An ADC power-up condition can be verified by reading page 0 / register 36, bit D6.

ADC Decimation Filtering and Signal Processing

The TLV320AIC3120 ADC channel includes built-in digital decimation filters to process the oversampled data from the delta-sigma modulator to generate digital data at the Nyquist sampling rate with high dynamic range. The decimation filter can be chosen from three different types, depending on the required frequency response, group delay, and sampling rate.

ADC Processing Blocks

The TLV320AIC3120 offers a range of processing blocks which implement various signal processing capabilities along with decimation filtering. These processing blocks give users the choice of how much and what type of signal processing they may use and which decimation filter is applied.

The choices among these processing blocks allow the system designer to balance power conservation and signal-processing flexibility. Less signal-processing capability reduces the power consumed by the device. Table 7-12 gives an overview of the available processing blocks of the ADC channel and their properties. The Resource Class (RC) column gives a relative indication of power consumption.

The signal processing blocks available are:

  • First-order IIR
  • Scalable number of biquad filters
  • Variable-tap FIR filter
  • AGC

The processing blocks are tuned for common cases and can achieve high anti-alias filtering or low group delay in combination with various signal-processing effects such as audio effects and frequency shaping. The available first-order IIR, biquad, and FIR filters have fully user-programmable coefficients.

Table 7-12 ADC Processing Blocks

PROCESSING BLOCKS CHANNEL DECIMATION
FILTER
1st-ORDER
IIR AVAILABLE
NUMBER
BIQUADS
FIR REQUIRED AOSR VALUE RESOURCE
CLASS
PRB_R4 Mono A Yes 0 No 128, 64 3
PRB_R5 Mono A Yes 5 No 128, 64 4
PRB_R6 Mono A Yes 0 25-tap 128, 64 4
PRB_R10 Mono B Yes 0 No 64 2
PRB_R11 Mono B Yes 3 No 64 2
PRB_R12 Mono B Yes 0 20-tap 64 2
PRB_R16 Mono C Yes 0 No 32 2
PRB_R17 Mono C Yes 5 No 32 2
PRB_R18 Mono C Yes 0 25-tap 32 2

ADC Processing Blocks – Signal Chain Details

First-Order IIR, AGC, Filter A

TLV320AIC3120 sig_chain1_los585.gif Figure 7-2 Signal Chain for PRB_R4

Five Biquads, First-Order IIR, AGC, Filter A

TLV320AIC3120 sig_chain2_los585.gif Figure 7-3 Signal Chain for PRB_R5

25-Tap FIR, First-Order IIR, AGC, Filter A

TLV320AIC3120 sig_chain3_los585.gif Figure 7-4 Signal Chain for PRB_R6

First-Order IIR, AGC, Filter B

TLV320AIC3120 sig_chain4_los585.gif Figure 7-5 Signal Chain for PRB_R10

Three Biquads, First-Order IIR, AGC, Filter B

TLV320AIC3120 sig_chain5_los585.gif Figure 7-6 Signal Chain for PRB_R11

20-Tap FIR, First-Order IIR, AGC, Filter B

TLV320AIC3120 sig_chain6_los585.gif Figure 7-7 Signal Chain for PRB_R12

First-Order IIR, AGC, Filter C

TLV320AIC3120 sig_chain7_los585.gif Figure 7-8 Signal Chain for PRB_R16

Five Biquads, First-Order IIR, AGC, Filter C

TLV320AIC3120 sig_chain8_los585.gif Figure 7-9 Signal Chain for PRB_R17

25-Tap FIR, First-Order IIR, AGC, Filter C

TLV320AIC3120 sig_chain9_los585.gif Figure 7-10 Signal Chain for PRB_R18

User-Programmable Filters

Depending on the selected processing block, different types and orders of digital filtering are available. A first-order IIR filter is always available, and is useful to filter out possible dc components of the signal efficiently. Up to five biquad sections or, alternatively, FIR filters of up to 25 taps are available for specific processing blocks. The coefficients of the available filters are arranged as sequentially indexed coefficients.

The coefficients of these filters are each 16 bits wide, in 2s-complement format, and occupy two consecutive 8-bit registers in the register space. Specifically, the filter coefficients are in 1.15 (one dot 15) format with a range from –1.0 (0x8000) to 0.999969482421875 (0x7FFF), as shown in Figure 7-11.

TLV320AIC3120 m0007-03_las550.gif Figure 7-11 1.15 2s-Complement Coefficient Format

First-Order IIR Section

The transfer function for the first-order IIR filter is given by Equation 1.

Equation 1. TLV320AIC3120 Agclpf_LAS550.gif

The frequency response for the first-order IIR section with default coefficients is flat at a gain of 0 dB.

Table 7-13 ADC First-Order IIR Filter Coefficients

FILTER FILTER COEFFICIENT ADC COEFFICIENT DEFAULT (RESET) VALUES
First-order IIR N0 Page 4 / register 8 and page 4 / register 9 0x7FFF (decimal 1.0 – LSB value)
N1 Page 4 / register 10 and page 4 / register 11 0x0000
D1 Page 4 / register 12 and page 4 / register 13 0x0000

Biquad Section

The transfer function of each of the biquad filters is given by Equation 2.

Equation 2. TLV320AIC3120 biquad_las550.gif

The default values for each biquad section yield an all-pass (flat) frequency response at a gain of 0 dB.

Table 7-14 ADC Biquad Filter Coefficients

FILTER FILTER COEFFICIENT FILTER COEFFICIENT RAM LOCATION DEFAULT (RESET) VALUES
Biquad A N0 Page 4 / register 14 and page 4 / register 15 0x7FFF (decimal 1.0 – LSB value)
N1 Page 4 / register 16 and page 4 / register 17 0x0000
N2 Page 4 / register 18 and page 4 / register 19 0x0000
D1 Page 4 / register 20 and page 4 / register 21 0x0000
D2 Page 4 / register 22 and page 4 / register 23 0x0000
Biquad B N0 Page 4 / register 24 and page 4 / register 25 0x7FFF (decimal 1.0 – LSB value)
N1 Page 4 / register 26 and page 4 / register 27 0x0000
N2 Page 4 / register 28 and page 4 / register 29 0x0000
D1 Page 4 / register 30 and page 4 / register 31 0x0000
D2 Page 4 / register 32 and page 4 / register 33 0x0000
Biquad C N0 Page 4 / register 34 and page 4 / register 35 0x7FFF (decimal 1.0 – LSB value)
N1 Page 4 / register 36 and page 4 / register 37 0x0000
N2 Page 4 / register 38 and page 4 / register 39 0x0000
D1 Page 4 / register 40 and page 4 / register 41 0x0000
D2 Page 4 / register 42 and page 4 / register 43 0x0000
Biquad D N0 Page 4 / register 44 and page 4 / register 45 0x7FFF (decimal 1.0 – LSB value)
N1 Page 4 / register 46 and page 4 / register 47 0x0000
N2 Page 4 / register 48 and page 4 / register 49 0x0000
D1 Page 4 / register 50 and page 4 / register 51 0x0000
D2 Page 4 / register 52 and page 4 / register 53 0x0000
Biquad E N0 Page 4 / register 54 and page 4 / register 55 0x7FFF (decimal 1.0 – LSB value)
N1 Page 4 / register 56 and page 4 / register 57 0x0000
N2 Page 4 / register 58 and page 4 / register 59 0x0000
D1 Page 4 / register 60 and page 4 / register 61 0x0000
D2 Page 4 / register 62 and page 4 / register 63 0x0000

FIR Section

Three of the available ADC processing blocks offer FIR filters for signal processing. Processing block PRB_R12 features a 20-tap FIR filter, whereas the processing blocks PRB_R6 and PRB_R18 each feature a 25-tap FIR filter.

Equation 3. TLV320AIC3120 q-fir_las550.gif

The coefficients of the FIR filters are 16-bit 2s-complement format (2 bytes each) and correspond to the ADC coefficient space as listed in Table 7-15. Note that the default (reset) coefficients are not valid for the FIR filter. When the FIR filter is used, all applicable coefficients must be reprogrammed by the user. To reprogram the FIR filter coefficients as an all-pass filter, write value 0x00 to page 4 / registers 24, 25, 34, 35, 44, 45, 54, and 55.

Table 7-15 ADC FIR Filter Coefficients

FILTER COEFFICIENT FILTER COEFFICIENT RAM LOCATION DEFAULT (RESET) VALUES – NOT VALID FOR THE FIR FILTER – MUST BE REPROGRAMMED BY USER
FIR0 Page 4 / register 14 and page 4 / register 15 0x7FFF (decimal 1.0 – LSB value)
FIR1 Page 4 / register 16 and page 4 / register 17 0x0000
FIR2 Page 4 / register 18 and page 4 / register 19 0x0000
FIR3 Page 4 / register 20 and page 4 / register 21 0x0000
FIR4 Page 4 / register 22 and page 4 / register 23 0x0000
FIR5 Page 4 / register 24 and page 4 / register 25 0x7FFF (decimal 1.0 – LSB value)
FIR6 Page 4 / register 26 and page 4 / register 27 0x0000
FIR7 Page 4 / register 28 and page 4 / register 29 0x0000
FIR8 Page 4 / register 30 and page 4 / register 31 0x0000
FIR9 Page 4 / register 32 and page 4 / register 33 0x0000
FIR10 Page 4 / register 34 and page 4 / register 35 0x7FFF (decimal 1.0 – LSB value)
FIR11 Page 4 / register 36 and page 4 / register 37 0x0000
FIR12 Page 4 / register 38 and page 4 / register 39 0x0000
FIR13 Page 4 / register 40 and page 4 / register 41 0x0000
FIR14 Page 4 / register 42 and page 4 / register 43 0x0000
FIR15 Page 4 / register 44 and page 4 / register 45 0x7FFF (decimal 1.0 – LSB value)
FIR16 Page 4 / register 46 and page 4 / register 47 0x0000
FIR17 Page 4 / register 48 and page 4 / register 49 0x0000
FIR18 Page 4 / register 50 and page 4 / register 51 0x0000
FIR19 Page 4 / registe 52 and page 4 / register 53 0x0000
FIR20 Page 4 / register 54 and page 4 / register 55 0x7FFF (decimal 1.0 – LSB value)
FIR21 Page 4 / register 56 and page 4 / register 57 0x0000
FIR22 Page 4 / register 58 and page 4 / register 59 0x0000
FIR23 Page 4 / register 60 and page 4 / register 61 0x0000
FIR24 Page 4 / register 62 and page 4 / register 63 0x0000

ADC Digital Decimation Filter Characteristics

The TLV320AIC3120 offers three different types of decimation filters. The integrated digital decimation filter removes high-frequency content and downsamples the audio data from an initial sampling rate of AOSR × fS to the final output sampling rate of fS. The decimation filtering is achieved using a higher-order CIC filter followed by linear-phase FIR filters. The decimation filter cannot be chosen by itself; it is implicitly set through the chosen processing block.

The following subsections describe the properties of the available filters A, B, and C.

Decimation Filter A

This filter is intended for use at sampling rates up to 48 kHz. When configuring this filter, the oversampling ratio of the ADC can either be 128 or 64. For highest performance, the oversampling ratio must be set to 128.

Filter A can also be used for 96 kHz at an AOSR of 64.

Table 7-16 ADC Decimation-Filter-A Specifications

PARAMETER CONDITION VALUE (TYPICAL) UNIT
AOSR = 128
Filter gain pass band 0…0.39 fS 0.062 dB
Filter gain stop band 0.55…64 fS –73 dB
Filter group delay 17/fS s
Pass-band ripple, 8 ksps 0…0.39 fS 0.062 dB
Pass-band ripple, 44.1 ksps 0…0.39 fS 0.05 dB
Pass-band ripple, 48 ksps 0…0.39 fS 0.05 dB
AOSR = 64
Filter gain pass band 0…0.39 fS 0.062 dB
Filter gain stop band 0.55…32 fS –73 dB
Filter group delay 17/fS s
Pass-band ripple, 8 ksps 0…0.39 fS 0.062 dB
Pass-band ripple, 44.1 ksps 0…0.39 fS 0.05 dB
Pass-band ripple, 48 ksps 0…0.39 fS 0.05 dB
Pass-band ripple, 96 ksps 0…20 kHz 0.1 dB
TLV320AIC3120 flta_res_las644.gif Figure 7-12 ADC Decimation-Filter-A Frequency Response

Decimation Filter B

Filter B is intended to support sampling rates up to 96 kHz at an oversampling ratio of 64.

Table 7-17 ADC Decimation-Filter-B Specifications

PARAMETER CONDITION VALUE (TYPICAL) UNIT
AOSR = 64
Filter gain pass band 0…0.39 fS ±0.077 dB
Filter gain stop band 0.60 fS…32 fS –46 dB
Filter group delay 11/fS s
Pass-band ripple, 8 ksps 0…0.39 fS 0.076 dB
Pass-band ripple, 44.1 ksps 0…0.39 fS 0.06 dB
Pass-band ripple, 48 ksps 0…0.39 fS 0.06 dB
Pass-band ripple, 96 ksps 0…20 kHz 0.11 dB
TLV320AIC3120 fltb_res_las644.gif Figure 7-13 ADC Decimation-Filter-B Frequency Response

Decimation Filter C

Filter C along with an AOSR of 32 is specially designed for 192-ksps operation for the ADC. The pass band, which extends up to 0.11 × fS (corresponding to 21 kHz), is suited for audio applications.

Table 7-18 ADC Decimation-Filter-C Specifications

PARAMETER CONDITION VALUE (TYPICAL) UNIT
Filter gain from 0 to 0.11 fS 0…0.11 fS ±0.033 dB
Filter gain from 0.28 fS to 16 fS 0.28 fS…16 fS –60 dB
Filter group delay 11/fS s
Pass-band ripple, 8 ksps 0…0.11 fS 0.033 dB
Pass-band ripple, 44.1 ksps 0…0.11 fS 0.033 dB
Pass-band ripple, 48 ksps 0…0.11 fS 0.032 dB
Pass-band ripple, 96 ksps 0…0.11 fS 0.032 dB
Pass-band ripple, 192 ksps 0…20 kHz 0.086 dB
TLV320AIC3120 fltc_res_las644.gif Figure 7-14 ADC Decimation-Filter-C Frequency Response

ADC Data Interface

The decimation filter and signal processing block in the ADC channel pass 32-bit data words to the audio serial interface once every cycle of ADC_fS. During each cycle of ADC_fS, a pair of data words (for left and right channel) is passed. The audio serial interface rounds the data to the required word length of the interface before converting to serial data. Because the TLV320AIC3120 has only a mono ADC, it passes the same data to both the left and right channels of the audio serial interface.

Updating ADC Digital Filter Coefficients During Record

When it is required to update the ADC digital filter coefficients during record, care must be taken to avoid click and pop noise or even a possible oscillation noise. These artifacts can occur if the ADC coefficients are updated without following the proper update sequence. The correct sequence is shown in Figure 7-15. The values for the times listed are conservative and should be used for software purposes.

TLV320AIC3120 f0023-02_las550.gif Figure 7-15 Updating ADC Digital Filter Coefficients During Record

Digital Microphone Function

In addition to supporting analog microphones, the TLV320AIC3120 can also interface to one digital microphone using the mono ADC channel. Figure 7-16 shows the digital microphone interface block diagram and Figure 7-17 shows the timing diagram for the digital microphone interface.

TLV320AIC3120 dig_mic_las644.gif Figure 7-16 Digital Microphone in the TLV320AIC3120

The TLV320AIC3120 outputs internal clock ADC_MOD_CLK on the GPIO1 pin (page 0 / register 51, bits D5–D2 = 1010). This clock can be connected to the external digital microphone device. The single-bit output of the external digital microphone device can be connected to the DIN pin. Internally, the TLV320AIC3120 latches the steady value of the mono ADC data on the rising edge of ADC_MOD_CLK.

TLV320AIC3120 dig_mic_t_las644.gif Figure 7-17 Timing Diagram for Digital Microphone Interface

When the digital microphone mode is enabled, the analog section of the ADC can be powered down and bypassed for power efficiency. The AOSR value for the ADC channel must be configured to select the desired decimation ratio to be achieved, based on the external digital microphone properties.

DC Measurement

The TLV320AIC3120 supports a highly flexible dc-measurement feature using the high-resolution oversampling and noise-shaping ADC. This mode can be used when the ADC channel is not used for the voice/audio record function. This mode can be enabled by programming page 0 / register 102, bit D7. The converted data is 24 bits, using the 2.22 numbering format. The value of the converted data for the ADC channel can be read back from page 0 / register 104 through page 1 / register 106. Before reading back the converted data, page 0 / register 103, bit D6 must be programmed to 1 in order to latch the converted data into the read-back registers. After the converted data is read back, page 0 / register 103, bit D6 must be immediately reset to 0. In dc-measurement mode, two measurement modes are supported.

Mode A

In dc-measurement mode A, a variable-length averaging filter is used. The length of averaging filter D can be programmed from 1 to 20 by programming page 0 / register 102, bits D4–D0. To choose mode A, page 0 / register 102, bit D5 must be programmed to 0.

Mode B

To choose mode B, page 0 / register 102, bit D5 must be programmed to 1. In dc-measurement mode B, a first-order IIR filter is used. The coefficients of this filter are determined by D, page 0 / register 102, bits D4–D0. The nature of the filter is given in Table 7-19.

Table 7-19 DC Measurement Bandwidth Settings

D: PAGE 0 / REGISTER 102, BITS D4–D0 –3 dB BW (kHz) –0.5 dB BW (kHz)
 1 688.440 236.500
 2 275.970 96.334
 3 127.400 44.579
 4 61.505 21.532
 5 30.248 10.590
 6 15.004  5.253
 7 7.472 2.616
 8 3.729  1.305
 9 1.862 652
10 931 326
11 465 163
12 232.6 81.5
13 116.3 40.7
14 58.1 20.3
15 29.1 10.2
16 14.54 5.09
17 7.25 2.54
18 3.63 1.27
19 1.8 0.635
20 0.908 0.3165

By programming page 0 / register 103, bit D5 to 1, the averaging filter is periodically reset after 2R number of ADC_MOD_CLK periods, where R is programmed in page 0 / register 103, bits D4–D0. When page 0 / register 103, bit D5 is set to 1, then the value of D should be less than the value of R. When page 0 / register 103, bit D5 is programmed to 0, the averaging filter is never reset.

ADC Setup

The following paragraphs are intended to guide a user through the steps necessary to configure the TLV320AIC3120 ADC.

Step 1

The system clock source (master clock) and the targeted ADC sampling frequency must be identified.

Depending on the targeted performance, the decimation filter type (A, B, or C) and AOSR value can be determined:

  • Filter A should be used for 48-kHz high-performance operation; AOSR must be a multiple of 8.
  • Filter B should be used for up to 96-kHz operations; AOSR must be a multiple of 4.
  • Filter C should be used for up to 192-kHz operations; AOSR must be a multiple of 2.

In all cases, AOSR is limited in its range by the following condition:


2.8 MHz < AOSR × ADC_fS < 6.2 MHz


Based on the identified filter type and the required signal processing capabilities, the appropriate processing block can be determined from the list of available processing blocks (PRB_R4 to PRB_R18).

Based on the available master clock, the chosen AOSR and the targeted sampling rate, the clock divider values NADC and MADC can be determined. If necessary, the internal PLL can add a large degree of flexibility.

In summary, CODEC_CLKIN (derived directly from the system clock source or from the internal PLL) divided by MADC, NADC, and AOSR must be equal to the ADC sampling rate ADC_fS. The CODEC_CLKIN clock signal is shared with the DAC clock-generation block.


CODEC_CLKIN = NADC × MADC × AOSR × ADC_fS


To a large degree, NADC and MADC can be chosen independently in the range of 1 to 128. In general, NADC should be as large as possible as long as the following condition can still be met:


MADC × AOSR / 32 ≥ RC


RC is a function of the chosen processing block and is listed in Table 7-20.

The common-mode voltage setting of the device is determined by the available analog power supply.


At this point, the following device specific parameters are known: PRB_Rx, AOSR, NADC, MADC, input and output common-mode values. If the PLL is used, the PLL parameters P, J, D, and R are determined as well.


Step 2

Setting up the device via register programming:

The following list gives a sequence of items that must be executed in the time between powering the device up and reading data from the device:

  1. Define starting point:
    1. Power up applicable external hardware power supplies
    2. Set register page to 0
    3. Initiate SW reset
  2. Program clock settings
    1. Program PLL clock dividers P, J, D, and R (if PLL is used)
    2. Power up PLL (if PLL is used)
    3. Program and power up NADC
    4. Program and power up MADC
    5. Program OSR value
    6. Program I2S word length if required (e.g., 20 bits)
    7. Program the processing block to be used
  3. Program analog blocks
    1. Set register page to 1
    2. Program MICBIAS if applicable
    3. Program MicPGA
    4. Program routing of inputs/common mode to ADC input
    5. Unmute analog PGAs and set analog gain
  4. Program ADC
    1. Set register page to 0
    2. Power up ADC channel
    3. Unmute digital volume control and set gain

A detailed example can be found in Section 7.3.11.

Example Register Setup to Record Analog Data Through ADC to Digital Out

A typical EVM I2C register control script follows to show how to set up the TLV320AIC3120 ADC in record mode with fS = 44.1 kHz and MCLK = 11.2896 MHz.


# Key: w 30 XX YY ==> write to I2C address 0x30, to register 0xXX, data 0xYY
# # ==> comment delimiter
# # The following list gives an example sequence of items that must be executed in the time # between powering the device up and reading data from the device. Note that there are # other valid sequences depending on which features are used. # # 1. Define starting point: # (a) Power up applicable external hardware power supplies # (b) Set register page to 0 # w 30 00 00 # (c) Initiate SW Reset # w 30 01 01 # # 2. Program Clock Settings # (a) Program PLL clock dividers P,J,D,R (if PLL is necessary) # # PLL_clkin = MCLK, codec_clkin = PLL_CLK, # P=1, R=1, J=8, D=0000 w 30 04 03 w 30 05 81 w 30 06 08 w 30 07 00 w 30 08 00 # # (b) Power up PLL (if PLL is necessary) w 30 05 91 # (c) Program and power up NADC # # NADC = 2, divider powered on w 30 12 82 # # (d) Program and power up MADC # # MADC = 8, divider powered on w 30 13 88 # # (e) Program OSR value # # AOSR = 128 w 30 14 80 # # (f) Program I2S word length as required (16, 20, 24, 32 bits) # # mode is i2s, wordlength is 16, slave mode (default) w 30 1B 00 # # (g) Program the processing block to be used # # RB_R4 w 30 3d 04 # # 3. Program Analog Blocks # (a) Set register Page to 1 # w 30 00 01 # # (b) Program MICBIAS if applicable # # Programmed MICBIAS always on, 2.5V # w 30 2E 0A # Micbias = AVDD w 30 2e 0a # # (c) Program MicPGA # (d) Routing of inputs/common mode to ADC input # (e) Unmute analog PGAs and set analog gain # # MICPGA P = MIC1LP 20kohm w 30 30 80 # # MICPGA M - CM 20kohm w 30 31 80 # # 4. Program ADC # # (a) Set register Page to 0 # w 30 00 00 # # (b) Power up ADC channel w 30 51 80 # # (c) Unmute digital volume control and set gain # # UNMUTE w 30 52 00 #

Audio DAC and Audio Analog Outputs

The mono audio DAC consists of a digital-audio processing block, a digital interpolation filter, a digital delta-sigma modulator, and an analog reconstruction filter. This high oversampling ratio (typically DOSR is between 32 and 128) exhibits good dynamic range by ensuring that the quantization noise generated within the delta-sigma modulator stays outside of the audio frequency band. Audio analog outputs include mono headphone, or lineouts, and mono class-D speaker outputs. Because the TLV320AIC3120 device has only a mono DAC, it inputs the mono data from the left channel, the right channel, or a mix of the left and right channels as [(L + R) ÷ 2], controlled by setting page 0 / register 63, bits D5–D4. See for the signal flow.

DAC

The TLV320AIC3120 mono-audio DAC supports data rates from 8 kHz to 192 kHz. The audio channel of the mono DAC consists of a signal-processing engine with fixed processing blocks, a programmable miniDSP, a digital interpolation filter, a multibit digital delta-sigma modulator, and an analog reconstruction filter. The DAC is designed to provide enhanced performance at low sampling rates through increased oversampling and image filtering, thereby keeping quantization noise generated within the delta-sigma modulator and signal images strongly suppressed within the audio band to beyond 20 kHz. To handle multiple input rates and optimize power dissipation and performance, the TLV320AIC3120 device allows the system designer to program the oversampling rates over a wide range from 1 to 1024 by configuring page 0 / register 13 and page 0 / register 14. The system designer can choose higher oversampling ratios for lower input data rates and lower oversampling ratios for higher input data rates.

The TLV320AIC3120 DAC channel includes a built-in digital interpolation filter to generate oversampled data for the delta-sigma modulator. The interpolation filter can be chosen from three different types, depending on required frequency response, group delay, and sampling rate.

DAC power up is controlled by writing to page 0 / register 63, bit D7 the mono channel. The mono-channel DAC clipping flag is provided as a read-only bit on page 0 / register 39, bit D7.

DAC Processing Blocks

The TLV320AIC3120 device implements signal-processing capabilities and interpolation filtering through processing blocks. These fixed processing blocks give users the choice of how much and what type of signal processing they use and which interpolation filter is applied.

The choices among these processing blocks allow the system designer to balance power conservation and signal-processing flexibility. Table 7-20 gives an overview of all available processing blocks of the DAC channel and their properties. The resource-class column gives an approximate indication of power consumption for the digital (DVDD) supply; however, based on the out-of-band noise spectrum, the analog power consumption of the drivers (HPVDD) may differ.

The signal processing blocks available are:

  • First-order IIR
  • Scalable number of biquad filters

The processing blocks are tuned for common cases and can achieve high image rejection or low group delay in combination with various signal-processing effects such as audio effects and frequency shaping. The available first-order IIR and biquad filters have fully user-programmable coefficients.

Table 7-20 Overview – Mono DAC Predefined Processing Blocks

PROCESSING
BLOCK NO.
INTERPOLATION FILTER FIRST-ORDER
IIR AVAILABLE
NUMBER OF BIQUADS DRC RESOURCE CLASS
PRB_P4 A No 3 No 4
PRB_P5 A Yes 6 Yes 6
PRB_P6 A Yes 6 No 6
PRB_P12 B Yes 0 No 3
PRB_P13 B No 4 Yes 4
PRB_P14 B No 4 No 4
PRB_P15 B Yes 6 Yes 6
PRB_P16 B Yes 6 No 4
PRB_P20 C Yes 0 No 2
PRB_P21 C Yes 4 Yes 3
PRB_P22 C Yes 4 No 2
PRB_P25 A Yes 5 Yes 12

DAC Processing Blocks — Signal Chain Details

Three Biquads, Filter A

TLV320AIC3120 sig_chain10_los585.gif Figure 7-18 Signal Chain for PRB_P4

Six Biquads, First-Order IIR, DRC, Filter A or B

TLV320AIC3120 f_3254_b_6bq_iir_drc_interp.gif Figure 7-19 Signal Chain for PRB_P5 and PRB_P15

Six Biquads, First-Order IIR, Filter A or B

TLV320AIC3120 sig_chain12_los585.gif Figure 7-20 Signal Chain for PRB_P6 and PRB_P16

IIR, Filter B or C

TLV320AIC3120 sig_chain13_los585.gif Figure 7-21 Signal Chain for PRB_P12 and PRB_P20

Four Biquads, DRC, Filter B

TLV320AIC3120 f_3254_e_4bq_drc_interp.gif Figure 7-22 Signal Chain for PRB_P13

Four Biquads, Filter B

TLV320AIC3120 sig_chain15_los585.gif Figure 7-23 Signal Chain for PRB_P14

Four Biquads, First-Order IIR, DRC, Filter C

TLV320AIC3120 f_3254_g_4bq_iir_drc_interp.gif Figure 7-24 Signal Chain for PRB_P21

Four Biquads, First-Order IIR, Filter C

TLV320AIC3120 sig_chain17_los585.gif Figure 7-25 Signal Chain for PRB_P22

Five Biquads, DRC, Beep Generator, Filter A

TLV320AIC3120 sig_chain20_los585.gifFigure 7-26 Signal Chain for PRB_P25

DAC User-Programmable Filters

Based on the selected processing block, different types and orders of digital filtering are available. Up to six biquad sections are available for specific processing blocks.

The coefficients of the available filters are arranged as sequentially-indexed coefficients in two banks. If adaptive filtering is chosen, the coefficient banks can be switched in real time.

When the DAC is running, the user-programmable filter coefficients are locked and cannot be accessed for either read or write.

However, the TLV320AIC3120 device offers an adaptive filter mode as well. Setting page 8 / register 1, bit D2 = 1 turns on double buffering of the coefficients. In this mode, filter coefficients are updated through the host and activated without stopping and restarting the DAC which enables advanced adaptive filtering applications.

In the double-buffering scheme, all coefficients are stored in two buffers (buffers A and B). When the DAC is running and the adaptive filtering mode is turned on, setting page 8 / register 1, bit D0 = 1 switches the coefficient buffers at the next start of a sampling period. This bit is set back to 0 after the switch occurs. At the same time, page 8 / register 1, bit D1 toggles.

The flag in page 8 / register 1, bit D1 indicates which of the two buffers is actually in use.

Page 8 / register 1, bit D1 = 0: buffer A is in use by the DAC engine; bit D1 = 1: buffer B is in use.

While the device is running, coefficient updates are always made to the buffer not in use by the DAC, regardless of the buffer to which the coefficients have been written.

Table 7-21 Adaptive-Mode Filter-Coefficient Buffer Switching

DAC POWERED UP PAGE 8 / REGISTER 1, BIT D1 COEFFICIENT BUFFER IN USE WRITING TO UPDATES
No 0 None Page 8, Reg 2–3, buffer A Page 8, Reg 2–3, buffer A
No 0 None Page 12, Reg 2–3, buffer B Page 12, Reg 2–3, buffer B
Yes 0 Buffer A Page 8, Reg 2–3, buffer A Page 12, Reg 2–3, buffer B
Yes 0 Buffer A Page 12, Reg 2–3, buffer B Page 12, Reg 2–3, buffer B
Yes 1 Buffer B Page 8, Reg 2–3, buffer A Page 8, Reg 2–3, buffer A
Yes 1 Buffer B Page 12, Reg 2–3, buffer B Page 8, Reg 2–3, buffer A

The user-programmable coefficients for the DAC processing blocks are defined on page 8 and page 9 for buffer A and page 12 and page 13 for buffer B.

The coefficients of these filters are each 16-bit, 2s-complement format, occupying two consecutive 8-bit registers in the register space. Specifically, the filter coefficients are in 1.15 (one dot 15) format with a range from –1.0 (0x8000) to 0.999969482421875 (0x7FFF) as shown in Figure 7-11.

First-Order IIR Section

The IIR is of first order and its transfer function is given by Equation 4.

Equation 4. TLV320AIC3120 Agclpf_LAS550.gif

The frequency response for the first-order IIR section with default coefficients is flat.

Table 7-22 DAC IIR Filter Coefficients

FILTER COEFFICIENT RIGHT DAC CHANNEL DEFAULT (RESET) VALUE
First-order IIR N0 Page 9 / register 2 and page 9 / register 3 0x7FFF (decimal 1.0 – LSB value)
N1 Page 9 / register 4 and page 9 / register 5 0x0000
D1 Page 9 / register 6 and page 9 / register 7 0x0000

Biquad Section

The transfer function of each of the biquad filters is given by Equation 5.

Equation 5. TLV320AIC3120 biquad_las550.gif

Table 7-23 DAC Biquad Filter Coefficients

FILTER COEFFICIENT MONO DAC CHANNEL DEFAULT (RESET) VALUES
Biquad A N0 Page 8 / register 2 and page 8 / register 3 0x7FFF (decimal 1.0 – LSB value)
N1 Page 8 / register 4 and page 8 / register 5 0x0000
N2 Page 8 / register 6 and page 8 / register 7 0x0000
D1 Page 8 / register 8 and page 8 / register 9 0x0000
D2 Page 8 / register 10 and page 8 / register 11 0x0000
Biquad B N0 Page 8 / register 12 and page 8 / register 13 0x7FFF (decimal 1.0 – LSB value)
N1 Page 8 / register 14 and page 8 / register 15 0x0000
N2 Page 8 / register 16 and page 8 / register 17 0x0000
D1 Page 8 / register 18 and page 8 / register 19 0x0000
D2 Page 8 / register 20 and page 8 / register 21 0x0000
Biquad C N0 Page 8 / register 22 and page 8 / register 23 0x7FFF (decimal 1.0 – LSB value)
N1 Page 8 / register 24 and page 8 / register 25 0x0000
N2 Page 8 / register 26 and page 8 / register 27 0x0000
D1 Page 8 / register 28 and page 8 / register 29 0x0000
D2 Page 8 / register 30 and page 8 / register 31 0x0000
Biquad D N0 Page 8 / register 32 and page 8 / register 33 0x7FFF (decimal 1.0 – LSB value)
N1 Page 8 / register 34 and page 8 / register 35 0x0000
N2 Page 8 / register 36 and page 8 / register 37 0x0000
D1 Page 8 / register 38 and page 8 / register 39 0x0000
D2 Page 8 / register 40 and page 8 / register 41 0x0000
Biquad E N0 Page 8 / register 42 and page 8 / register 43 0x7FFF (decimal 1.0 – LSB value)
N1 Page 8 / register 44 and page 8 / register 45 0x0000
N2 Page 8 / register 46 and page 8 / register 47 0x0000
D1 Page 8 / register 48 and page 8 / register 49 0x0000
D2 Page 8 / register 50 and page 8 / register 51 0x0000
Biquad F N0 Page 8 / register 52 and page 8 / register 53 0x7FFF (decimal 1.0 – LSB value)
N1 Page 8 / register 54 and page 8 / register 55 0x0000
N2 Page 8 / register 56 and page 8 / register 57 0x0000
D1 Page 8 / register 58 and page 8 / register 59 0x0000
D2 Page 8 / register 60 and page 8 / register 61 0x0000

DAC Interpolation Filter Characteristics

Interpolation Filter A

Filter A is designed for an fS up to 48 ksps with a flat passband of 0 to 20 kHz.

Table 7-24 Specification for DAC Interpolation Filter A

PARAMETER CONDITION VALUE (TYPICAL) UNIT
Filter-gain pass band 0 … 0.45 fS ±0.015 dB
Filter-gain stop band 0.55… 7.455 fS –65 dB
Filter group delay 21 / fS s
TLV320AIC3120 G016_LOS585.gif Figure 7-27 Frequency Response of DAC Interpolation Filter A

Interpolation Filter B

Filter B is specifically designed for an fS of up to 96 ksps. Thus, the flat passband region easily covers the required audio band of 0 to 20 kHz.

Table 7-25 Specification for DAC Interpolation Filter B

PARAMETER CONDITION VALUE (TYPICAL) UNIT
Filter-gain pass band 0 … 0.45 fS ±0.015 dB
Filter-gain stop band 0.55… 3.45 fS –58 dB
Filter group delay 18 / fS s
TLV320AIC3120 G017_LOS585.gif Figure 7-28 Frequency Response of Channel Interpolation Filter B

Interpolation Filter C

Filter C is specifically designed for the 192-ksps mode. The pass band extends up to 0.4 × fS (corresponds to 80 kHz), more than sufficient for audio applications.

Table 7-26 Specification for DAC Interpolation Filter C

PARAMETER CONDITION VALUE (TYPICAL) UNIT
Filter-gain pass band 0 … 0.35 fS ±0.03 dB
Filter-gain stop band 0.6… 1.4 fS –43 dB
Filter group delay 13 / fS s
TLV320AIC3120 G018_LOS585.gif Figure 7-29 Frequency Response of DAC Interpolation Filter C

DAC Digital-Volume Control

The DAC has a digital-volume control block which implements programmable gain. Each channel has an independent volume control that can be varied from 24 dB to –63.5 dB in 0.5-dB steps. The left-channel DAC volume is controlled by writing to page 0 / register 65, bits D7–D0. The right-channel DAC volume can be controlled by writing to page 0 / register 66, bits D7–D0. DAC muting and setting up a master gain control to control both channels occurs by writing to page 0 / register 64, bits D3–D0. The gain is implemented with a soft-stepping algorithm, which only changes the actual volume by 0.125 dB per input sample, either up or down, until the desired volume is reached. The rate of soft-stepping is slowed to one step per two input samples by writing to page 0 / register 63, bits D1–D0. Note that the default source for volume-control level settings is control by register writes (page 0 / register 65 and page 0 / register 66 to control volume). Use of the VOL/MICDET pin to control the DAC volume is ignored until the volume control source selected has been changed to pin control (page 0 / register 116, bit D7 = 1). This functionality is shown in .

During soft-stepping, the host does not receive a signal when the DAC has been completely muted. This may be important if the host must mute the DAC before making a significant change, such as changing sample rates. In order to help with this situation, the device provides a flag back to the host through a read-only register, page 0 / register 38, bit D4 for the left channel and bit D0 for the right channel. This information alerts the host when the part has completed the soft-stepping and the actual volume has reached the desired volume level. The soft-stepping feature can be disabled by writing to page 0 / register 63, bits D1–D0.

If soft-stepping is enabled, the CODEC_CLKIN signal must be kept active until the DAC power-up flag is cleared. When this flag is cleared, the internal DAC soft-stepping process is complete, and CODEC_CLKIN can be stopped if desired. (The analog volume control can be ramped down using an internal oscillator.)

Volume Control Pin

The range of voltages used by the 7-bit SAR ADC is shown in Section 5.5.

The volume-control pin is not enabled by default but is enabled by writing 1 to page 0 / register 116, bit D7. The default DAC volume control uses software control of the volume, which occurs if page 0 / register 116, bit D7 = 0. Soft-stepping the volume level is set up by writing to page 0 / register 63, bits D1–D0.

When the volume-pin function is used, a 7-bit Vol ADC reads the voltage on the VOL/MICDET pin and updates the digital volume control by overwriting the current value of the volume control. The new volume setting which has been applied because of a change of voltage on the volume control pin is read on page 0 / register 117, bits D6–D0. The 7-bit Vol ADC clock source is selected on page 0 / register 116, bit D6. The update rate is programmed on page 0 / register 116, bits D2–D0 for this 7-bit SAR ADC.

Table 7-27 lists The VOL/MICDET pin gain mapping.

Table 7-27 VOL/MICDET Pin Gain Mapping

VOL/MICDET PIN SAR OUTPUT DIGITAL GAIN APPLIED
0 18 dB
1 17.5 dB
2 17 dB
: :
35 0.5 dB
36 0.0 dB
37 –0.5 dB
: :
89 –26.5 dB
90 –27 dB
91 –28 dB
: :
125 –62 dB
126 –63 dB
127 Mute

shows the VOL/MICDET pin connection and functionality.

As shown in Table 7-27, the VOL/MICDET pin has a range of volume control from 18 dB down to –63 dB, and mute. However, if less maximum gain is required, then a smaller range of voltage must be applied to the VOL/MICDET pin. Applying a smaller range of voltage occurs by increasing the value of R2 relative to the value of (P1 + R1), so that more voltage is available at the bottom of P1. The circuit must also be designed such that for the values of R1, R2, and P1 chosen, the maximum voltage (top of the potentiometer) does not exceed AVDD/2 (see Figure 7-30). The recommended values for R1, R2, and P1 for several maximum gains are shown in Table 7-28. Note that in typical applications, R1 must not be 0 Ω, as the VOL/MICDET pin must not exceed AVDD/2 for proper ADC operation.

TLV320AIC3120 VolMic_LAS653.gif Figure 7-30 Example Analog Volume Control Circuit to VOL/MICDET Pin

Table 7-28 VOL/MICDET Pin Gain Scaling

R1
(kΩ)
P1
(kΩ)
R2
(kΩ)
ADC VOLTAGE
for AVDD = 3.3 V
(V)
DIGITAL GAIN RANGE
(dB)
25 25 0 0 to 1.65 18 to –63
33 25 7.68 0.386 to 1.642 3 to –63
34.8 25 9.76 0.463 to 1.649 0 to –63

Dynamic Range Compression

Typical music signals are characterized by crest factors, the ratio of peak signal power to average signal power, of 12 dB or more. To avoid audible distortions due to clipping of peak signals, the gain of the DAC channel must be adjusted so as not to cause hard clipping of peak signals. As a result, during nominal periods, the applied gain is low, causing the perception that the signal is not loud enough. To overcome this problem, dynamic range conpression (DRC) in the TLV320AIC3120 continuously monitors the output of the DAC digital volume control to detect its power level relative to 0 dBFS. When the power level is low, DRC increases the input signal gain to make it sound louder. At the same time, if a peaking signal is detected, it autonomously reduces the applied gain to avoid hard clipping. This results in sounds more pleasing to the ear as well as sounding louder during nominal periods.

The DRC functionality in the TLV320AIC3120 is implemented by a combination of processing blocks in the DAC channel as described in Section 7.3.12.1.2.

DRC can be disabled by writing to page 0 / register 68, bits D6–D5.

DRC typically works on the filtered version of the input signal. The input signals have no audio information at dc and extremely low frequencies; however, they can significantly influence the energy estimation function in the dynamic range compressor (the DRC). Also, most of the information about signal energy is concentrated in the low-frequency region of the input signal.

To estimate the energy of the input signal, the signal is first fed to the DRC high-pass filter and then to the DRC low-pass filter. These filters are implemented as first-order IIR filters given by

Equation 6. TLV320AIC3120 q-hhpf_las550.gif
Equation 7. TLV320AIC3120 q-hlpf_las550.gif

The coefficients for these filters are 16 bits wide in 2s-complement format and are user-programmable through register write as given in Table 7-29.

Table 7-29 The DRC HPF and LPF Coefficients

COEFFICIENT LOCATION
HPF N0 C71 page 9 / register 14 and page 9 / register 15
HPF N1 C72 page 9 / registers 16 and page 9 / register 17
HPF D1 C73 page 9 / registers 18 and page 9 / register 19
LPF N0 C74 page 9 / registers 20 and page 9 / register 21
LPF N1 C75 page 9 / registers 22 and page 9 / register 23
LPF D1 C76 page 9 / registers 24 and page 9 / register 25

The default values of these coefficients implement a high-pass filter with a cutoff at 0.00166 × DAC_fS, and a low-pass filter with a cutoff at 0.00033 × DAC_fS.

The output of the DRC high-pass filter is fed to the processing block selected for the DAC channel. The absolute value of the DRC LPF filter is used for energy estimation within the DRC.

The gain in the DAC digital volume control is controlled by page 0 / register 65 and page 0 / register 66. When the DRC is enabled, the applied gain is a function of the digital volume control register setting and the output of the DRC.

The DRC parameters are described in sections that follow.

DRC Threshold

DRC threshold represents the level of the DAC playback signal at which the gain compression becomes active. The output of the digital volume control in the DAC is compared with the set threshold. The threshold value is programmable by writing to page 0 / register 68, bits D4–D2. The threshold value can be adjusted between –3 dBFS and –24 dBFS in steps of 3 dB. Keeping the DRC threshold value too high may not leave enough time for the DRC block to detect peaking signals, and can cause excessive distortion at the outputs. Keeping the DRC threshold value too low can limit the perceived loudness of the output signal.

The recommended DRC threshold value is –24 dB.

When the output signal exceeds the set DRC threshold, the interrupt flag bits at page 0 / register 44, bits D3–D2 are updated. These flag bits are sticky in nature, and are reset only after they are read back by the user. The non-sticky versions of the interrupt flags are also available at page 0 / register 46, bits D3–D2.

DRC Hysteresis

DRC hysteresis is programmable by writing to page 0 / register 68, bits D1–D0. These bits can be programmed to represent values between 0 dB and 3 dB in steps of 1dB. DRC hysteresis provides a programmable window around the programmed DRC threshold that must be exceeded for the disabled DRC to become enabled, or the enabled DRC to become disabled. For example, if the DRC threshold is set to –12 dBFS and the DRC hysteresis is set to 3 dB, then if the gain compression in the DRC is inactive, the output of the DAC digital volume control must exceed –9 dBFS before gain compression due to the DRC is activated. Similarly, when the gain compression in the DRC is active, the output of the DAC digital volume control must fall below –15 dBFS for gain compression in the DRC to be deactivated. The DRC hysteresis feature prevents the rapid activation and de-activation of gain compression in the DRC in cases when the output of the DAC digital volume control rapidly fluctuates in a narrow region around the programmed DRC threshold. By programming the DRC hysteresis as 0 dB, the hysteresis action is disabled.

The recommended value of DRC hysteresis is 3 dB.

DRC Hold

DRC hold time is intended to slow the start of decay for a specified period of time in response to a decrease in energy level. To minimize audible artifacts, TI recommends to set the DRC hold time to 0 through programming page 0 / register 69, bits D6–D3 = 0000.

DRC Attack Rate

When the output of the DAC digital volume control exceeds the programmed DRC threshold, the gain applied in the DAC digital volume control is progressively reduced to avoid the signal from saturating the channel. This process of reducing the applied gain is called attack. To avoid audible artifacts, the gain is reduced slowly with a rate equaling the attack rate, programmable via page 0 / register 70, bits D7–D4. Attack rates can be programmed from 4-dB gain change per 1/DAC_fS to 1.2207e–5-dB gain change per 1/DAC_fS.

Attack rates should be programmed such that before the output of the DAC digital volume control can clip, the input signal should be sufficiently attenuated. High attack rates can cause audible artifacts, and too-slow attack rates may not be able to prevent the input signal from clipping.

The recommended DRC attack rate value is 1.9531e–4 dB per 1/DAC_fS.

DRC Decay Rate

When the DRC detects a reduction in output signal swing beyond the programmed DRC threshold, the DRC enters a decay state, where the applied gain in the digital-volume control is gradually increased to programmed values. To avoid audible artifacts, the gain is slowly increased with a rate equal to the decay rate programmed through page 0 / register 70, bits D3–D0. The decay rates can be programmed from 1.5625e–3 dB per 1/DAC_fS to 4.7683e–7 dB per 1/DAC_fS. If the decay rates are programmed too high, then sudden gain changes can cause audible artifacts. However, if it is programmed too slow, then the output may be perceived as too low for a long time after the peak signal has passed.

The recommended value of DRC decay rate is 2.4414e–5 dB per 1/DAC_fS.

Example Setup for DRC

  • PGA gain = 12 dB
  • Threshold = –24 dB
  • Hysteresis = 3 dB
  • Hold time = 0 ms
  • Attack rate = 1.9531e–4 dB per 1/DAC_fS
  • Decay rate = 2.4414e–5 dB per 1/DAC_fS

Script

#Go to Page 0
w 30 00 00
#DAC => 12 db gain left
w 30 41 18
#DAC => 12 db gain right
w 30 42 18
#DAC => DRC Enabled for both channels, Threshold = -24 db, Hysteresis = 3 dB
w 30 44 7F
#DRC Hold = 0 ms, Rate of Changes of Gain = 0.5 dB/Fs'
w 30 45 00
#Attack Rate = 1.9531e-4 dB/Frame , DRC Decay Rate =2.4414e-5 dB/Frame
w 30 46 B6
#Go to Page 9
w 30 00 09
#DRC HPF
w 30 0E 7F AB 80 55 7F 56
#DRC LPF W 30 14 00 11 00 11 7F DE

Headset Detection

The TLV320AIC3120 device includes extensive capability to monitor a headphone, microphone, or headset jack, to determine if a plug has been inserted into the jack, and then determine what type of headset or headphone is wired to the plug. The device also includes the capability to detect a button press, even, for example, when starting calls on mobile phones with headsets. Figure 7-31 shows the circuit configuration to enable this feature.

TLV320AIC3120 s0403-01_las653.gif Figure 7-31 Jack Connections for Headset Detection

Headset Detection is enabled by programming page 0 / register 67, bit D1. In order to avoid false detections because of mechanical vibrations in headset jacks or microphone buttons, a debounce function is provided for glitch rejection. For the case of headset insertion, a debounce function with a range of 32 ms to 512 ms is provided. This can be programmed through page 0 / register 67, bits D4–D2. For improved button-press detection, the debounce function has a range of 8 ms to 32 ms by programming page 0 / register 67, bits D1–D0.

The TLV320AIC3120 device also provides feedback to the user when a button press or a headset insertion or removal event is detected through register-readable flags or through an interrupt on the I/O pins. The value in page 0 / register 46, bits D5–D4 provides the instantaneous state of button press and headset insertion. Page 0 / register 44, bit D5 is a sticky (latched) flag that is set when the button-press event is detected. Page 0 / register 44, bit D4 is a sticky flag which is set when the headset insertion or removal event is detected. These sticky flags are set by the event occurrence, and are reset only when read. This requires polling page 0 / register 44. To avoid polling and the associated overhead, the TLV320AIC3120 device also provides an interrupt feature, whereby events can trigger the INT1, the INT2, or both interrupts. These interrupt events can be routed to one of the digital output pins. See Section 7.3.12.6 for details.

The TLV320AIC3120 device not only detects a headset insertion event, but also is able to distinguish between the different headsets inserted, such as stereo headphones or cellular headphones. After the headset-detection event, the user can read page 0 / register 67, bits D6–D5 to determine the type of headset inserted.

Table 7-30 Headset Detection Block Registers

REGISTER DESCRIPTION
Page 0 / register 67, bit D1 Headset-detection enable/disable
Page 0 / register 67, bits D4–D2 Debounce programmability for headset detection
Page 0 / register 67, bits D1–D0 Debounce programmability for button press
Page 0 / register 44, bit D5 Sticky flag for button-press event
Page 0 / register 44, bit D4 Sticky flag for headset-insertion or -removal event
Page 0 / register 46, bit D5 Status flag for button-press event
Page 0 / register 46, bit D4 Status flag for headset insertion and removal
Page 0 / register 67, bits D6–D5 Flags for type of headset detected

The headset detection block requires AVDD to be powered. The headset detection feature in the TLV320AIC3120 device is achieved with very low power overhead, requiring less than 20 μA of additional current from the AVDD supply.

Interrupts

Some specific events in the TLV320AIC3120 device that can require host processor intervention are used to trigger interrupts to the host processor. This avoids polling the status-flag registers continuously. The TLV320AIC3120 device has two defined interrupts, INT1 and INT2, that are configured by programming page 0 / register 48 and page 0 / register 49. A user can configure interrupts INT1 and INT2 to be triggered by one or many events, such as:

  • Headset detection
  • Button press
  • DAC DRC signal exceeding threshold
  • Noise detected by AGC
  • Overcurrent condition in headphone drivers and speaker drivers
  • Data overflow in the ADC and DAC processing blocks and filters
  • DC measurement data available

Each of these INT1 and INT2 interrupts can be routed to output pins GPIO1 or DOUT. These interrupt signals can either be configured as a single pulse or a series of pulses by programming page 0 / register 48, bit D0 and page 0 / register 49, bit D0. If the user configures the interrupts as a series of pulses, the events trigger the start of pulses that stop when the flag registers in page 0 / registers 44, 45, and 50 are read by the user to determine the cause of the interrupt.

Key-Click Functionality With Beep Generator (PRB_P25)

A special algorithm has been included in the digital signal processing block PRB_P25 for generating a digital sine-wave signal that is sent to the DAC.

This functionality is intended for generating key-click sounds for user feedback. The sine-wave generator is very flexible (see Table 7-31) and is completely register programmable. Programming page 0 / register 71 through page 0 / register 79 (8 bits each) completely controls the functionality of this generator and allows for differentiating sounds.

The two registers used for programming the 16-bit sine-wave coefficient are page 0 / register 76 and page 0 / register 77. The two registers used for programming the 16-bit cosine-wave coefficient are page 0 / register 78 and page 0 / register 79. This coefficient resolution allows virtually any frequency of sine wave in the audio band to be generated, up to fS / 2.

The three registers used to control the length of the sine-burst waveform are page 0 / register 73 through page 0 / register 75. The resolution (bit) in the registers of the sine-burst length is one sample time, so this allows great control on the overall time of the sine-burst waveform. This 24-bit length timer supports
16 777 215 sample times. For example, if fS is set at 48 kHz, and the register value equals 96 000 d (01 7700h), then the sine burst lasts exactly 2 seconds. The default settings for the tone generator, based on using a sample rate of 48 kHz, are 1-kHz (approximately) sine wave, with a sine-burst length of five cycles (5 ms).

Table 7-31 Beep Generator Register Locations (Page 00h)

LEFT BEEP CONTROL RIGHT BEEP CONTROL BEEP LENGTH SINE COSINE
MSB MID LSB MSB LSB MSB LSB
REGISTER 71 72 73 74 75 76 77 78 79

Table 7-32 Example Beep-Generator Settings for a 1000-Hz Tone

BEEP FREQUENCY BEEP LENGTH SINE COSINE SAMPLE RATE
Hz MSB
(hex)
MID
(hex)
LSB
(hex)
MSB
(hex)
LSB
(hex)
MSB
(hex)
LSB
(hex)
Hz
1000(1) 0 0 EE 10 D8 7E E3 48 000
These are the default settings.

Two registers are used to control the left sine-wave volume and the right sine-wave volume independently. The 6-bit digital volume control used allows level control of 2 dB to –61 dB in 1-dB steps. The left-channel volume is controlled by writing to page 0 / register 71, bits D5–D0. The right-channel volume is controlled by writing to page 0, register 72, bits D5–D0. A master volume control that controls the left and right channels of the beep generator are set up by writing to page 0 / register 72, bits D7–D6. The default volume control setting is 2 dB, which provides the maximum tone-generator output level.

For generating other tones, the three tone-generator coefficients are found by running the following script using MATLAB™ :

Sine = dec2hex(round(sin(2*π*Fin/Fs)*2^15)) Cosine = dec2hex(round(cos(2*π*Fin/Fs)*2^15)) Beep Length = dec2hex(floor(Fs*Cycle/Fin))

where,

Fin = Beep frequency desired
Fs = Sample rate
Cycle = Number of beep (sine wave) cycles that are required
dec2hex = Decimal to hexadecimal conversion function

NOTES:

  1. Fin must be less than Fs / 4.
  2. For the sine and cosine values, if the number of bits is less than the full 16-bit value, then the unused MSBs must be written as 0s.
  3. For the beep-length values, if number of bits is less than the full 24-bit value, then the unused MSBs must be written as 0s.

Following the beep-volume control is a digital mixer that mixes in a playback data stream whose level has already been set by the DAC volume control. Therefore, once the key-click volume level is set, the key-click volume is not affected by the DAC volume control, which is the main control available to the end user. shows this functionality.

Following the DAC, the signal can be further scaled by the analog output volume control and power-amplifier level control.

To insert a beep in the middle of an already-playing signal over DAC, use the following sequence.

Before the beep is desired, program the desired beep frequency, volume, and length in the configuration registers. When a beep is desired, use the example configuration script.

w 30 00 00 # change to Page 0 w 30 40 0C # mute DACs f 30 26 xxx1xxx1 # wait for DAC gain flag to be set w 30 0B 02 # power down NDAC divider w 30 47 80 # enable beep generator with left channel volume = 0dB, volume level could # be different as per requirement w 30 0B 82 # power up NDAC divider, in this specific example NDAC = 2, but NDAC could # be different value as per overall setup w 30 40 00 # un-mute DAC to resume playing audio

Note that in this scheme the audio signal on the DAC is temporarily muted to enable beep generation. Because powering down of NDAC clock divider is required, do not use the DAC_CLK or DAC_MOD_CLK for generation of I2S clocks.

Programming DAC Digital Filter Coefficients

The digital filter coefficients must be programmed through the I2C interface. All digital filtering for the DAC signal path must be loaded into the RAM before the DAC is powered on. Note that default ALLPASS filter coefficients for programmable biquads are located in boot ROM. The boot ROM automatically loads the default values into the RAM following a hardware reset (toggling the RESET pin) or after a software reset. After resetting the device, loading boot ROM coefficients into the digital filters requires 100 μs of programming time. During this time, reading or writing to page 8 through page 15 for updating DAC filter coefficient values is not permitted. The DAC should not be powered up until after all of the DAC configurations have been done by the system microprocessor.

Updating DAC Digital Filter Coefficients During PLAY

When it is required to update the DAC digital filter coefficients or beep generator during play, care must be taken to avoid click and pop noise or even a possible oscillation noise. These artifacts can occur if the DAC coefficients are updated without following the proper update sequence. The correct sequence is shown in Figure 7-32. The values for times listed in Figure 7-32 are conservative and should be used for software purposes.

There is also an adaptive mode, in which DAC coefficients can be updated while the DAC is on. For details, see Section 7.3.12.1.3.

TLV320AIC3120 f0024-02_las550.gif Figure 7-32 Example Flow For Updating DAC Digital Filter Coefficients During Play

Digital Mixing and Routing

The TLV320AIC3120 has four digital mixing blocks. Each mixer can provide either mixing or multiplexing of the digital audio data. The first mixer/multiplexer can be used to select input data for the mono DAC from left channel, right channel, or a mix of the left and right channels [(L + R) / 2] . This digital routing can be configured by writing to page 0 / register 63, bits D5–D4 for the DAC mono channel.

Analog Audio Routing

The TLV320AIC3120 has the capability to route the DAC output to either the headphone or the speaker output. If desirable, both output drivers can operate at the same time while playing at different volume levels. The TLV320AIC3120 provides various digital routing capabilities, allowing digital mixing or even channel swapping in the digital domain. All analog outputs other than the selected ones can be powered down for optimal power consumption.

Analog Output Volume Control

The output volume control fine tunes the level of the mixer amplifier signal supplied to the headphone driver or the speaker driver. This architecture supports separate and concurrent volume levels for each of the four output drivers. This volume control is also used as part of the output pop-noise reduction scheme. This feature is available even if the ADC and DAC are powered down.

Headphone Analog-Output Volume Control

For the headphone outputs, the analog volume control has a range from 0 dB to –78 dB in 0.5-dB steps for most of the useful range plus mute, which is shown in Table 7-33. This volume control includes soft-stepping logic. Routing the DAC output signal to the analog volume control occurs by writing to page 1 / register 35, bit D7-D6.

Changing the analog volume for the headphone is controlled by writing to page 1 / register 36, bits D6–D0. Routing the signal from the output of the analog volume control to the input of the headphone power amplifier occurs by writing to page 1 / register 36, bit D7.

The analog volume-control soft-stepping time is based on the setting in page 0 / register 63, bits D1–D0.

Table 7-33 Analog Volume Control for Headphone and Speaker Outputs (for D7 = 1)(1)

REGISTER VALUE
(D6–D0)
ANALOG GAIN (dB) REGISTER VALUE
(D6–D0)
ANALOG GAIN (dB) REGISTER VALUE
(D6–D0)
ANALOG GAIN (dB) REGISTER VALUE
(D6–D0)
ANALOG GAIN (dB)
 0   0 30 –15 60 –30.1  90 –45.2
 1  –0.5 31 –15.5 61 –30.6  91 –45.8
 2  –1 32 –16 62 –31.1  92 –46.2
 3  –1.5 33 –16.5 63 –31.6  93 –46.7
 4  –2 34 –17 64 –32.1  94 –47.4
 5  –2.5 35 –17.5 65 –32.6  95 –47.9
 6  –3 36 –18.1 66 –33.1  96 –48.2
 7  –3.5 37 –18.6 67 –33.6  97 –48.7
 8  –4 38 –19.1 68 –34.1  98 –49.3
 9  –4.5 39 –19.6 69 –34.6  99 –50
10  –5 40 –20.1 70 –35.2 100 –50.3
11  –5.5 41 –20.6 71 –35.7 101 –51
12  –6 42 –21.1 72 –36.2 102 –51.4
13  –6.5 43 –21.6 73 –36.7 103 –51.8
14  –7 44 –22.1 74 –37.2 104 –52.2
15  –7.5 45 –22.6 75 –37.7 105 –52.7
16  –8 46 –23.1 76 –38.2 106 –53.7
17  –8.5 47 –23.6 77 –38.7 107 –54.2
18  –9 48 –24.1 78 –39.2 108 –55.3
19  –9.5 49 –24.6 79 –39.7 109 –56.7
20 –10 50 –25.1 80 –40.2 110 –58.3
21 –10.5 51 –25.6 81 –40.7 111 –60.2
22 –11 52 –26.1 82 –41.2 112 –62.7
23 –11.5 53 –26.6 83 –41.7 113 –64.3
24 –12 54 –27.1 84 –42.1 114 –66.2
25 –12.5 55 –27.6 85 –42.7 115 –68.7
26 –13 56 –28.1 86 –43.2 116 –72.2
27 –13.5 57 –28.6 87 –43.8 117–127 –78.3
28 –14 58 –29.1 88 –44.3
29 –14.5 59 –29.6 89 –44.8
Mute when D7 = 0 and D6–D0 = 127 (0x7F).

Class-D Speaker Analog Output Volume Control

For the speaker outputs, the analog volume control has a range from 0 dB to –78 dB in 0.5-dB steps for most of the useful range plus mute, as seen in Table 7-33. The implementation includes soft-stepping logic.

Routing the DAC output signal to the analog volume control is done by writing to page 1 / register 35, bit D7-D6. Changing the analog volume for the speaker is controlled by writing to page 1 / register 38, bits D6–D0.

Routing the signal from the output of the analog volume control to the input of the speaker amplifier is done by writing to page 1 / register 38, bit D7.

The analog volume-control soft-stepping time is based on the setting in page 0 / register 63, bits D1–D0.

Analog Outputs

Various analog routings are supported for playback. All the options can be conveniently viewed on the functional block diagram, .

Headphone Drivers

The TLV320AIC3120 device features a mono headphone driver (HPOUT) that delivers up to 30 mW per channel, at 3.3-V supply voltage, into a 16-Ω load. The headphones are used in a single-ended configuration where an ac-coupling capacitor (dc-blocking) is connected between the device output pins and the headphones. The headphone driver also supports 32-Ω and 10-kΩ loads without changing any control register settings.

The headphone drivers can be configured to optimize the power consumption in the lineout-drive mode by writing 11 to page 1 / register 44, bits D2–D1.

The output common mode of the headphone and lineout drivers is programmed to 1.35 V, 1.5 V, 1.65 V, or 1.8 V by setting page 1 / register 31, bits D4–D3. Set the common-mode voltage to ≤ AVDD / 2.

The headphone driver can be powered on by writing to page 1 / register 31, bit D7. The HPOUT output driver gain can be controlled by writing to page 1 / register 40, bits D6–D3, and it can be muted by writing to page 1 / register 40, bit D2.

The TLV320AIC3120 device has a short-circuit protection feature for the headphone drivers, which is always enabled to provide protection. The output condition of the headphone driver during short circuit is programmed by writing to page 1 / register 31, bit D1. If D1 = 0 when a short circuit is detected, the device limits the maximum current to the load. If D1 = 1 when a short circuit is detected, the device powers down the output driver. The default condition for headphones is the current-limiting mode. In case of a short circuit on either channel, the output is disabled and a status flag is provided as read-only bits on page 1 / register 31, bit D0. If shutdown mode is enabled, then as soon as the short circuit is detected, page 1 / register 31, bit D7 (for HPOUT) clears automatically. Next, the device requires a reset to re-enable the output stage. Resetting occurs in two ways. First, the device master reset can be used, which requires either toggling the RESET pin or using the software reset. If master reset is used, it resets all of the registers. Second, a dedicated headphone power-stage reset can also be used to re-enable the output stage, and that keeps all of the other device settings. The headphone power stage reset occurs by setting page 1 / register 31, bit D7 for HPOUT. If the fault condition has been removed, then the device returns to normal operation. If the fault is still present, then another shutdown occurs. Repeated resetting (more than three times) is not recommended, as this could lead to overheating.

Speaker Drivers

The TLV320AIC3120 device has an integrated class-D mono speaker driver (SPKP / SPKM) capable of driving an 8-Ω or 4-Ω differential load. The speaker driver can be powered directly from the battery supply (2.7 V to 5.5 V) on the SPKVDD pins; however, the voltage (including spike voltage) must be limited below the absolute-maximum voltage of 6 V.

The speaker driver is capable of supplying 400 mW per channel with a 3.6-V power supply. Through the use of digital mixing, the device can connect one or both digital audio playback data channels to either speaker driver; this also allows digital channel swapping if needed.

The class-D speaker driver can be powered on by writing to page 1 / register 32, bit D7. The class-D output driver gain can be controlled by writing to page 1 / register 42, bits D4–D3, and it can be muted by writing to page 1 / register 42, bit D2.

The TLV320AIC3120 device has a short-circuit protection feature for the speaker drivers that is always enabled to provide protection. If the output is shorted, the output stage shuts down on the overcurrent condition. (Current limiting is not an available option for the higher-current speaker driver output stage.) In case of a short circuit on either channel, the output is disabled and a status flag is provided as a read-only bit on page 1 / register 32, bit D0.

If shutdown occurs because of an overcurrent condition, then the device requires a reset to re-enable the output stage. Resetting occurs in two ways. First, the device master reset can be used, which requires either toggling the RESET pin or using the software reset. If master reset is used, it resets all of the registers. Second, a dedicated speaker power-stage reset can be used that keeps all of the other device settings. The speaker power-stage reset occurs by setting page 1 / register 32, bit D7 for SPKP and SPKM. If the fault condition has been removed, then the device returns to normal operation. If the fault is still present, then another shutdown occurs. Repeated resetting (more than three times) is not recommended as this could lead to overheating.

To minimize battery current leakage, the SPKVDD voltage levels must not be less than the AVDD voltage level.

The TLV320AIC3120 device has a thermal protection (OTP) feature for the speaker drivers which is always enabled to provide protection. If the device overheats, then the output stops switching. When the device cools down, the device resumes switching. An overtemperature status flag is provided as a read-only bit on page 0 / register 3, bit D1. The OTP feature is for self-protection of the device. If die temperature can be controlled at the system or board level, then overtemperature does not occur.

Audio-Output Stage-Power Configurations

After the device has been configured (following a RESET) and the circuitry has been powered up, the audio output stage can be powered up and powered down by register control.

These functions soft-start automatically. The two power stages can be powered up or powered down independently..

See Table 7-34 for register control of audio output stage power configurations.

Table 7-34 Audio-Output Stage-Power Configurations

AUDIO OUTPUT PINS DESIRED FUNCTION PAGE 1 / REGISTER, BIT VALUES
HPOUT Power down HPOUT driver Page 1 / register 31, bit D7 = 0
Power up HPOUT driver Page 1 / register 31, bit D7 = 1
SPKP / SPKM Power down class-D drivers Page 1 / register 32, bit D7 = 0
Power up class-D drivers Page 1 / register 32, bit D7 = 1

DAC Setup

The following paragraphs are intended to guide a user through the steps necessary to configure the TLV320AIC3120.

Step 1

The system clock source (master clock) and the targeted DAC sampling frequency must be identified.

Depending on the targeted performance, the decimation filter type (A, B, or C) and DOSR value can be determined:

  • Filter A should be used for 48-kHz high-performance operation; DOSR must be a multiple of 8.
  • Filter B should be used for up to 96-kHz operations; DOSR must be a multiple of 4.
  • Filter C should be used for up to 192-kHz operations; DOSR must be a multiple of 2.

In all cases, DOSR is limited in its range by the following condition:


2.8 MHz < DOSR × DAC_fS < 6.2 MHz


Based on the identified filter type and the required signal-processing capabilities, the appropriate processing block can be determined from the list of available processing blocks (PRB_P1 to PRB_P25).

Based on the available master clock, the chosen DOSR and the targeted sampling rate, the clock-divider values NDAC and MDAC can be determined. If necessary, the internal PLL can add a large degree of flexibility.

In summary, CODEC_CLKIN (derived directly from the system clock source or from the internal PLL) divided by MDAC, NDAC, and DOSR must be equal to the DAC sampling rate, DAC_fS. The CODEC_CLKIN clock signal is shared with the DAC clock-generation block.


CODEC_CLKIN = NDAC × MDAC × DOSR × DAC_fS


To a large degree, NDAC and MDAC can be chosen independently in the range of 1 to 128. In general, NDAC should be as large as possible as long as the following condition can still be met:


MDAC × DOSR / 32 ≥ RC


RC is a function of the chosen processing block and is listed in Table 7-20.

The common-mode voltage setting of the device is determined by the available analog power supply.


At this point, the following device-specific parameters are known: PRB_Rx, DOSR, NDAC, MDAC, input and output common-mode values. If the PLL is used, the PLL parameters P, J, D, and R are determined as well.


Step 2

Setting up the device via register programming:

The following list gives an example sequence of items that must be executed in the time between powering the device up and reading data from the device. Note that there are other valid sequences, depending on which features are used.

  1. Define starting point:
    1. Power up applicable external power supplies
    2. Set register page to 0
    3. Initiate SW reset
  2. Program clock settings
    1. Program PLL clock dividers P, J, D, and R (if PLL is used)
    2. Power up PLL (if PLL is used)
    3. Program and power up NDAC
    4. Program and power up MDAC
    5. Program OSR value
    6. Program I2S word length if required (16, 20, 24, or 32 bits)
    7. Program the processing block to be used
    8. Micellaneous page 0 controls
  3. Program analog blocks
    1. Set register page to 1
    2. Program common-mode voltage
    3. Program headphone-specific de-pop settings (in case headphone driver is used)
    4. Program routing of DAC output to the output amplifier (headphone/lineout or speaker)
    5. Unmute and set gain of output drivers
    6. Power up output drivers
  4. Apply waiting time determined by the de-pop settings and the soft-stepping settings of the driver gain, or poll page 1 / register 63
  5. Power up DAC
    1. Set register page to 0
    2. Power up DAC channels and set digital gain
    3. Unmute digital volume control

A detailed example can be found in Section 7.3.12.15.

Example Register Setup to Play Digital Data Through DAC and Headphone/Speaker Outputs

A typical EVM I2C register control script follows to show how to set up the TLV320AIC3120 in playback mode with fS = 44.1 kHz and MCLK = 11.2896 MHz.


# Key: w 30 XX YY ==> write to I2C address 0x30, to register 0xXX, data 0xYY
# # ==> comment delimiter
# # The following list gives an example sequence of items that must be executed in the time # between powering the device up and reading data from the device. Note that there are # other valid sequences depending on which features are used. # # 1. Define starting point: # (a) Power up applicable external hardware power supplies # (b) Set register page to 0 # w 30 00 00 # # (c) Initiate SW reset # w 30 01 01 # # 2. Program clock settings # (a) Program PLL clock dividers P, J, D, R (if PLL is used) # # PLL_clkin = MCLK,codec_clkin = PLL_CLK w 30 04 03 # J = 8 w 30 06 08 # D = 0000, D(13:8) = 0, D(7:0) = 0 w 30 07 00 00 # # (b) Power up PLL (if PLL is used) # PLL Power up, P = 1, R = 1 # w 30 05 91 # # (c) Program and power up NDAC # # NDAC is powered up and set to 8 w 30 0B 88 # # (d) Program and power up MDAC # # MDAC is powered up and set to 2 w 30 0C 82 # # (e) Program OSR value # # DOSR = 128, DOSR(9:8) = 0, DOSR(7:0) = 128 w 30 0D 00 80 # # (f) Program I2S word length if required (16, 20, 24, 32 bits) # and master mode (BCLK and WCLK are outputs) # # mode is i2s, wordlength is 16, slave mode w 30 1B 00 # # (g) Program the processing block to be used # # select DAC DSP Processing Block PRB_P16 w 30 3C 10 w 30 00 08 w 30 01 04 w 30 00 00 # # 3. Program analog blocks # # (a) Set register page to 1 # w 30 00 01 # # (b) Program common-mode voltage (defalut = 1.35 V) # w 30 1F 04 # (c) Program headphone-specific depop settings (in case headphone driver is used) # # De-pop, Power on = 800 ms, Step time = 4 ms w 30 21 4E # # (d) Program routing of DAC output to the output amplifier (headphone/lineout or speaker) # # DAC routed to HPOUT w 30 23 40 # # (e) Unmute and set gain of output driver # # Unmute HPOUT, set gain = 0 db w 30 28 06 # Unmute Class-D, set gain = 18 dB w 30 2A 1C # # (f) Power up output drivers # # HPOUT powered up w 30 1F 82 # Power-up Class-D drivers w 30 20 C6 # Enable HPOUT output analog volume, set = -9 dB w 30 24 92 # Enable Class-D output analog volume, set = -9 dB w 30 26 92 # # 4. Apply waiting time determined by the de-pop settings and the soft-stepping settings of # the driver gain or poll page 1 / register 63 # # 5. Power up DAC # (a) Set register page to 0 # w 30 00 00 # # (b) Power up DAC channels and set digital gain # # Powerup DAC (soft step enabled) w 30 3F 94 # # DAC gain = -22 dB w 30 41 D4 # # (c) Unmute digital volume control # # Unmute DAC w 30 40 04

CLOCK Generation and PLL

The TLV320AIC3120 device supports a wide range of options for generating clocks for the ADC and DAC sections as well as interface and other control blocks as shown in Figure 7-33. The clocks for the ADC and DAC require a source reference clock. This clock is provided on a variety of device pins, such as the MCLK, BCLK, or GPIO1 pins. The source reference clock for the codec is chosen by programming the CODEC_CLKIN value on page 0 / register 4, bits D1–D0. The CODEC_CLKIN is then routed through highly-flexible clock dividers shown in Figure 7-33 to generate the various clocks required for the ADC, DAC, and digital processing sections. In the event that the desired audio or miniDSP clocks cannot be generated from the reference clocks on MCLK, BCLK, or GPIO1, the TLV320AIC3120 device also provides the option of using the on-chip PLL which supports a wide range of fractional multiplication values to generate the required clocks. Starting from CODEC_CLKIN, the TLV320AIC3120 device provides several programmable clock dividers to help achieve a variety of sampling rates for the ADC, DAC.

TLV320AIC3120 B0357-02_LAS644_new.gif Figure 7-33 Clock Distribution Tree

Equation 8. TLV320AIC3120 eq_5-8_las644.gif

Table 7-35 CODEC CLKIN Clock Dividers

DIVIDER BITS
NDAC Page 0 / register 11, bits D6–D0
MDAC Page 0 / register 12, bits D6–D0
DOSR Page 0 / register 13, bits D1–D0 and page 0 / register 14, bits D7–D0
NADC Page 0 / register 18, bits D6–D0
MADC Page 0 / register 19, bits D6–D0
AOSR Page 0 / register 20, bits D7–D0

The DAC modulator is clocked by DAC_MOD_CLK. For proper power-up operation of the DAC channel, this clock must be enabled by configuring the NDAC and MDAC clock dividers (page 0 / register 11, bit D7 = 1 and page 0 / register 12, bit D7 = 1). When the DAC channel is powered down, the device internally initiates a power-down sequence for proper shutdown. During this shutdown sequence, the NDAC and MDAC dividers must not be powered down, or else a proper low-power shutdown may not take place. The user can read back the power-status flag at page 0 / register 37, bit D7 and page 0 / register 37, bit D3. When both of the flags indicate power-down, the MDAC divider may be powered down, followed by the NDAC divider. Note that when the ADC clock dividers are powered down, the ADC clock is derived from the DAC clocks.

The ADC modulator is clocked by ADC_MOD_CLK. For proper power-up of the ADC channel, these clocks are enabled by the NADC and MADC clock dividers (page 0 / register 18, bit D7 = 1 and page 0 / register 19, bit D7 = 1). When the ADC channel is powered down, the device internally initiates a power-down sequence for proper shutdown. During this shutdown sequence, the NADC and MADC dividers must not be powered down, or else a proper low-power shutdown may not take place. The user can read back the power-status flag from page 0 / register 36, bit D6. When this flag indicates power down, the MADC divider may be powered down, followed by NADC divider.

When ADC_CLK (ADC DSP clock) is derived from the NDAC divider output, the NDAC must be kept powered up until the power-down status flags for ADC do not indicate power down. When the input to the AOSR clock divider is derived from DAC_MOD_CLK, then MDAC must be powered up when ADC_fS is needed (for example, when WCLK is generated by the TLV320AIC3120 device or AGC is enabled) and can be powered down only after the ADC power-down flags indicate power-down status.

In general, for proper operation, all the root clock dividers must power down only after the child clock dividers have powered down.

The TLV320AIC3120 device also has options for routing some of the internal clocks to the output pins of the device to be used as general-purpose clocks in the system. The feature is shown in Figure 7-35.

TLV320AIC3120 bclk_op_las644.gif Figure 7-34 BCLK Output Options

In the mode when the TLV320AIC3120 device is configured to drive the BCLK pin (page 0 / register 27, bit D3 = 1), the device is driven as the divided value of BDIV_CLKIN. The division value is programmed in page 0 / register 30, bits D6–D0 from 1 to 128. The BDIV_CLKIN is configurable to be one of DAC_CLK (DAC DSP clock), DAC_MOD_CLK, ADC_CLK (ADC DSP clock) or ADC_MOD_CLK by configuring the BDIV_CLKIN multiplexer in page 0 / register 29, bits D1–D0. Additionally, a general-purpose clock can be driven out on either GPIO1 or DOUT.

This clock can be a divided-down version of CDIV_CLKIN. The value of this clock divider can be programmed from 1 to 128 by writing to page 0 / register 26, bits D6–D0. CDIV_CLKIN can also be programmed as one of the clocks among the list shown in Figure 7-35. This is controlled by programming the multiplexer in page 0 / register 25, bits D2–D0.

TLV320AIC3120 gen_purp_clk_las644.gif Figure 7-35 General-Purpose Clock Output Options

Table 7-36 Maximum TLV320AIC3120 Clock Frequencies

CLOCK DVDD ≥ 1.65 V
CODEC_CLKIN ≤ 110 MHz
ADC_CLK (ADC DSP clock) ≤ 49.152 MHz
ADC_miniDSP_CLK ≤ 24.576 MHz
ADC_MOD_CLK 6.758 MHz
ADC_fS 0.192 MHz
DAC_CLK (DAC DSP clock) ≤ 49.152 MHz
DAC_miniDSP_CLK ≤ 49.152 MHz with DRC disabled
≤ 48 MHz with DRC enabled
DAC_MOD_CLK 6.758 MHz
DAC_fS 0.192 MHz
BDIV_CLKIN 55 MHz
CDIV_CLKIN 100 MHz when M is odd
110 MHz when M is even

PLL

For lower power consumption, the best process is to derive the internal audio processing clocks using the simple dividers. When the input MCLK or other source clock is not an integer multiple of the audio processing clocks then using the on-board PLL is necessary. The TLV320AIC3120 fractional PLL generates an internal master clock that produces the processing clocks required by the ADC, DAC, and miniDSP. The programmability of this PLL allows operation from a wide variety of clocks that may be available in the system.

The PLL input supports clocks varying from 512 kHz to 20 MHz and is register-programmable to enable generation of the required sampling rates with fine resolution. The PLL turns on by writing to page 0 / register 5, bit D7. When the PLL is enabled, the PLL output clock, PLL_CLK, is given by Equation 9.

Equation 9. TLV320AIC3120 q-pll_las644.gif

where

  • R = 1, 2, 3, ..., 16 (page 0 / register 5, default value = 1)
  • J = 1, 2,3, … , 63, (page 0 / register 6, default value = 4)
  • D = 0, 1, 2, …, 9999 (page 0 / register 7 and page 0 / register 8, default value = 0)
  • P = 1, 2, 3, …, 8 (page 0 / register 5, default value = 1)

The PLL turns on through page 0 / register 5, bit D7. The variable P is programmed through page 0 / register 5, bits D6–D4. The variable R is programmed through page 0 / register 5, bits D3–D0. The variable J is programmed through page 0 / register 6, bits D5–D0. The variable D is 14 bits and is programmed into two registers. The MSB portion is programmed through page 0 / register 7, bits D5–D0, and the LSB portion is programmed thrugh page 0 / register 8, bits D7–D0. For proper update of the D-divider value, page 0 / register 7 must be programmed first, followed immediately by page 0 / register 8. The new value of D does not take effect unless the write to page 0 / register 8 is complete.

When the PLL is enabled, the following conditions must be satisfied:

  • When the PLL is enabled and D = 0, the following conditions must be satisfied for PLL_CLKIN:
  • Equation 10. TLV320AIC3120 q-pll2_las644.gif

    80 MHz ≤ (PLL_CLKIN × J.D. × R / P) ≤ 110 MHz


    4 ≤ R × J ≤ 259

  • When the PLL is enabled and D ≠ 0, the following conditions must be satisfied for PLL_CLKIN:
  • Equation 11. TLV320AIC3120 q-pll3_las644.gif

    80 MHz ≤ PLL_CLKIN × J.D. × R / P ≤ 110 MHz


    R = 1

The PLL can power up independently from the ADC and DAC blocks, and can also be used as a general-purpose PLL by routing the PLL output to the GPIO output. After powering up the PLL, PLL_CLK is available typically after 10 ms.

The clocks for the codec and various signal processing blocks, CODEC_CLKIN, are generated from the MCLK input, BCLK input, GPIO input, or PLL_CLK (page 0 / register 4, bits D1–D0).

If CODEC_CLKIN is derived from the PLL, then the PLL must be powered up first and powered down last.

Table 7-37 lists several example cases of typical PLL_CLKIN rates and how to program the PLL to achieve a sample rate fS of either 44.1 kHz or 48 kHz.

Table 7-37 PLL Example Configurations

PLL_CLKIN (MHz) PLLP PLLR PLLJ PLLD MADC NADC AOSR MDAC NDAC DOSR
fS = 44.1 kHz
 2.8224 1 3 10    0 3 5 128 3 5 128
 5.6448 1 3 5    0 3 5 128 3 5 128
12      1 1 7  560 3 5 128 3 5 128
13      1 1 6 3504 2 9 104 6 3 104
16      1 1 5 2920 3 5 128 3 5 128
19.2    1 1 4 4100 3 5 128 3 5 128
48      4 1 7  560 3 5 128 3 5 128
fS = 48 kHz
 2.048 1 3 14    0 2 7 128 7 2 128
 3.072 1 4 7    0 2 7 128 7 2 128
 4.096 1 3 7    0 2 7 128 7 2 128
 6.144 1 2 7    0 2 7 128 7 2 128
 8.192 1 4 3    0 2 8 128 4 4 128
12     1 1 7 1680 2 7 128 7 2 128
16     1 1 5 3760 2 7 128 7 2 128
19.2   1 1 4 4800 2 7 128 7 2 128
48     4 1 7 1680 2 7 128 7 2 128

Timer

The internal clock runs nominally at 8.2 MHz. This is used for various internal timing intervals, de-bounce logic, and interrupts. The MCLK divider must be set in such a way that the divider output is approximately 1 MHz for the timers to be closer to the programmed value.

TLV320AIC3120 timer_clk_las647.gifFigure 7-36 Interval Timer Clock Selection

Digital Audio and Control Interface

Digital Audio Interface

Audio data is transferred between the host processor and the TLV320AIC3120 device through the digital audio data, serial interface, or audio bus. The audio bus on this device is very flexible, including left- or right-justified data options, support for I2S or PCM protocols, programmable data length options, a TDM mode for multichannel operation, very flexible master and slave configurability for each bus-clock line, and the ability to communicate with multiple devices within a system directly.

NOTE

The TLV320AIC3120 device has a mono DAC which inputs the mono data from the digital audio data serial interface as the left channel, the right channel, or a mix of the left and right channels as [(L + R) ÷ 2] (page 0 / register 63, bits D5–D4). The TLV320AIC3120 device has a mono ADC which outputs the same data to both the left and right channels of the digital audio data serial interface output. See for the signal flow of the DAC and ADC.

The audio bus of the TLV320AIC3120 device can be configured for left-justified or right-justified, I2S, DSP, or TDM modes of operation, where communication with standard telephony PCM interfaces is supported within the TDM mode. These modes are all MSB-first, with data width programmable as 16, 20, 24, or 32 bits by configuring page 0 / register 27, bits D5–D4. In addition, the word clock and bit clock can be independently configured in either master or slave mode, for flexible connectivity to a wide variety of processors. The word clock defines the beginning of a frame, and can be programmed as either a pulse or a square-wave signal. The frequency of this clock corresponds to the maximum of the selected ADC and DAC sampling frequencies.

The bit clock is used to clock-in and clock-out the digital audio data across the serial bus. When in master mode, this signal can be programmed to generate variable clock pulses by controlling the bit-clock divider in page 0 / register 30 (see Figure 7-33). The number of bit-clock pulses in a frame can require adjustment to accommodate various word lengths as well as to support the case when multiple TLV320AIC3120s share the same audio bus.

The TLV320AIC3120 device also includes a feature to offset the position of start-of-data transfer with respect to the word clock. This offset is controlled in terms of number of bit-clocks and can be programmed in page 0 / register 28.

The TLV320AIC3120 device also has the feature of inverting the polarity of the bit clock used for transferring the audio data as compared to the default clock polarity used. This feature can be used independently of the mode of audio interface chosen. This can be configured through page 0 / register 29, bit D3.

The TLV320AIC3120 device further includes programmability (page 0 / register 27, bit D0) to place the DOUT line in the high-impedance state during all bit clocks when valid data is not being sent. By combining this capability with the ability to program at what bit clock in a frame the audio data begins, time-division multiplexing (TDM) is accomplished, enabling the use of multiple codecs on a single audio serial data bus. When the audio serial data bus is powered down while configured in master mode, the pins associated with the interface are put into a high-impedance output condition.

By default, when the word clocks and bit clocks are generated by the TLV320AIC3120 device, these clocks are active only when the codecs (ADC, DAC or both) are powered up within the device. This is done to save power. However, it also supports a feature when both the word clocks and bit clocks can be active even when the codec in the device is powered down. This is useful when using the TDM mode with multiple codecs on the same bus, or when word clocks or bit clocks are used in the system as general-purpose clocks.

Right-Justified Mode

The audio interface of the TLV320AIC3120 can enter the right-justified mode by programming page 0 / register 27, bits D7–D6 = 10. In right-justified mode, the LSB of the left channel is valid on the rising edge of the bit clock preceding the falling edge of the word clock. Similarly, the LSB of the right channel is valid on the rising edge of the bit clock preceding the rising edge of the word clock.

TLV320AIC3120 t_rt_jus_las644.gif Figure 7-37 Timing Diagram for Right-Justified Mode

For the right-justified mode, the number of bit clocks per frame should be greater-than or equal-to twice the programmed word length of the data.

Left-Justified Mode

The audio interface of the TLV320AIC3120 can enter the left-justified mode by programming page 0 / register 27, bits D7–D6 = 11. In left-justified mode, the MSB of the right channel is valid on the rising edge of the bit clock following the falling edge of the word clock. Similarly, the MSB of the left channel is valid on the rising edge of the bit clock following the rising edge of the word clock.

TLV320AIC3120 t_lft_jus_los585.gif Figure 7-38 Timing Diagram for Left-Justified Mode
TLV320AIC3120 t_lft_offset_los585.gif Figure 7-39 Timing Diagram for Left-Justified Mode With Offset = 1
TLV320AIC3120 t_lft_inv_los585.gif Figure 7-40 Timing Diagram for Left-Justified Mode With Offset = 0 and Inverted Bit Clock

For the left-justified mode, the number of bit clocks per frame should be greater-than or equal-to twice the programmed word length of the data. Also, the programmed offset value should be less than the number of bit clocks per frame by at least the programmed word length of the data.

I2S Mode

The audio interface of the TLV320AIC3120 device enters I2S mode by programming page 0 / register 27, bits D7–D6 = to 00. In I2S mode, the MSB of the left channel is valid on the second rising edge of the bit clock after the falling edge of the word clock. Similarly, the MSB of the right channel is valid on the second rising edge of the bit clock after the rising edge of the word clock.

TLV320AIC3120 t_dia_los585.gif Figure 7-41 Timing Diagram for I2S Mode
TLV320AIC3120 t_dis_offset_los585.gif Figure 7-42 Timing Diagram for I2S Mode With Offset = 2
TLV320AIC3120 t_dis_inv_los585.gif Figure 7-43 Timing Diagram for I2S Mode With Offset = 0 and Bit Clock Inverted

For I2S mode, the number of bit clocks per channel should be greater-than or equal-to the programmed word length of the data. Also, the programmed offset value should be less than the number of bit clocks per frame by at least the programmed word length of the data.

Figure 7-44 shows the timing diagram for I2S mode for the mono audio ADC.

TLV320AIC3120 t0202-03_las644.gif Figure 7-44 Timing Diagram for I2S Mode for Mono Audio ADC

DSP Mode

The audio interface of the TLV320AIC3120 can enter DSP mode by programming page 0 / register 27, bits D7–D6 = 01. In DSP mode, the falling edge of the word clock starts the data transfer with the left-channel data first and immediately followed by the right-channel data. Each data bit is valid on the falling edge of the bit clock.

TLV320AIC3120 t_dsp_los585.gif Figure 7-45 Timing Diagram for DSP Mode
TLV320AIC3120 t_dsp_offset_los585.gif Figure 7-46 Timing Diagram for DSP Mode With Offset = 1
TLV320AIC3120 t_dsp_inv_los585.gif Figure 7-47 Timing Diagram for DSP Mode With Offset = 0 and Bit Clock Inverted

For the DSP mode, the number of bit clocks per frame should be greater-than or equal-to twice the programmed word length of the data. Also, the programmed offset value should be less than the number of bit clocks per frame by at least the programmed word length of the data.

Primary and Secondary Digital Audio Interface Selection

The audio serial interface on the TLV320AIC3120 has extensive I/O control to allow communication with two independent processors for audio data. The processors can communicate with the device one at a time. This feature is enabled by register programming of the various pin selections. Table 7-38 shows the primary and secondary audio interface selection and registers. Table 7-39 shows the selection criteria for generating ADC_WCLK. Figure 7-48 is a high-level diagram showing the general signal flow and multiplexing for the primary and secondary audio interfaces. For detailed information, see Table 7-38, Table 7-39, and the register definitions in .

Table 7-38 Primary and Secondary Audio Interface Selection

DESIRED PIN FUNCTION POSSIBLE PINS PAGE 0 REGISTERS COMMENT
Primary WCLK (OUT) WCLK R27/D2 = 1 Primary WCLK is output from codec
R33/D5–D4 Select source of primary WCLK (DAC_fs, ADC_fs, or secondary WCLK)
Primary WCLK (IN) WCLK R27/D2 = 0 Primary WCLK is input to codec
Primary BCLK (OUT) BCLK R27/D3 = 1 Primary BCLK is output from codec
R33/D7 Select source of primary WCLK (internal BCLK or secondary BCLK)
Primary BCLK (IN) BCLK R27/D3 = 0 Primary BCLK is input to codec
Primary DIN (IN) DIN R32/D0 Select DIN to internal interface (0 = primary DIN; 1 = secondary DIN)
Primary DOUT (OUT) DOUT R53/D3–D1 = 001 DOUT = primary DOUT for codec interface
R33/D1 Select source for DOUT (0 = DOUT from interface block; 1 = secondary DIN)
Secondary WCLK (OUT) GPIO1 R31/D4–D2 = 000 Secondary WCLK obtained from GPIO1 pin
R51/D5–D2 = 1001 GPIO1 = secondary WCLK output
R33/D3–D2 Select source of secondary WCLK (DAC_fs, ADC_fs, or primary WCLK)
DOUT R31/D4–D2 = 011 Secondary WCLK obtained from DOUT pin
R53/D3–D1 = 111 DOUT = secondary WCLK output
R33/D3–D2 Select source of secondary WCLK (DAC_fs, ADC_fs, or primary WCLK)
Secondary WCLK (IN) GPIO1 R31/D4–D2 = 000 Secondary WCLK obtained from GPIO1 pin
R51/D5–D2 = 0001 GPIO1 enabled as secondary input
Secondary BCLK (OUT) GPIO1 R31/D7–D5 = 000 Secondary BCLK obtained from GPIO1 pin
R51/D5–D2 = 1000 GPIO1 = secondary BCLK output
R33/D6 Select source of secondary BCLK (primary BCLK or internal BCLK)
DOUT R31/D7–D5 = 011 Secondary BCLK obtained from DOUT pin
R53/D3–D1 = 110 DOUT = secondary BCLK output
R33/D6 Select source of secondary BCLK (primary BCLK or internal BCLK)
Secondary BCLK (IN) GPIO1 R31/D7–D5 = 000 Secondary BCLK obtained from GPIO1 pin
R51/D5–D2 = 0001 GPIO1 enabled as secondary input
Secondary DIN (IN) GPIO1 R31/D1–D0 = 00 Secondary DIN obtained from GPIO1 pin
R51/D5–D2 = 0001 GPIO1 enabled as secondary input
Secondary DOUT (OUT) GPIO1 R51/D5–D2 = 1011 GPIO1 = secondary DOUT
R33/D0 Select source for secondary DOUT (0 = primary DIN; 1 = DOUT from interface block)

Table 7-39 Generation of ADC_WCLK

ADC_WCLK DIRECTION POSSIBLE PINS PAGE 0 REGISTERS COMMENT
OUTPUT GPIO1 R32/D7–D5 = 000 ADC_WCLK obtained from GPIO1 pin
R51/D5–D2 = 0111 GPIO1 = ADC_WCLK
R32/D1 Select source of Internal ADC_WCLK (0 = DAC_WCLK; 1 = ADC_WCLK)
INPUT GPIO1 R32/D7–D5 = 000 ADC_WCLK obtained from GPIO1 pin
R51/D5–D2 = 0001 GPIO1 enabled as secondary input
R32/D1 Select source of internal ADC_WCLK (0 = DAC_WCLK; 1 = ADC_WCLK)
TLV320AIC3120 i2c_pcm_bus_las644.gif Figure 7-48 Audio Serial Interface Multiplexing

Control Interface

The TLV320AIC3120 control interface supports the I2C communication protocol.

I2C Control Mode

The TLV320AIC3120 supports the I2C control protocol, and responds to the I2C address of 0011 000. I2C is a two-wire, open-drain interface supporting multiple devices and masters on a single bus. Devices on the I2C bus only drive the bus lines LOW by connecting them to ground; they never drive the bus lines HIGH. Instead, the bus wires are pulled HIGH by pullup resistors, so the bus wires are HIGH when no device is driving them LOW. This way, two devices cannot conflict; if two devices drive the bus simultaneously, there is no driver contention.

Communication on the I2C bus always takes place between two devices, one acting as the master and the other acting as the slave. Both masters and slaves can read and write, but slaves can only do so under the direction of the master. Some I2C devices can act as masters or slaves, but the TLV320AIC3120 can only act as a slave device.

An I2C bus consists of two lines, SDA and SCL. SDA carries data, and the SCL signal provides the clock. All data is transmitted across the I2C bus in groups of eight bits. To send a bit on the I2C bus, the SDA line is driven to the appropriate level while SCL is LOW (a LOW on SDA indicates the bit is zero, while a HIGH indicates the bit is one).

Once the SDA line has settled, the SCL line is brought HIGH, then LOW. This pulse on the SCL line clocks the SDA bit into the receiver shift register.

The I2C bus is bidirectional: the SDA line is used both for transmitting and receiving data. When a master reads from a slave, the slave drives the data line; when a master sends to a slave, the master drives the data line.

Most of the time the bus is idle, no communication is taking place, and both lines are HIGH. When communication is taking place, the bus is active. Only master devices can start communication on the bus. Generally, the data line is only allowed to change state while the clock line is LOW. If the data line changes state while the clock line is HIGH, it is either a START condition or the counterpart, a STOP condition. A START condition is when the clock line is HIGH and the data line goes from HIGH to LOW. A STOP condition is when the clock line is HIGH and the data line goes from LOW to HIGH.

After the master issues a START condition, it sends a byte that selects the slave device for communication. This byte is called the address byte. Each device on an I2C bus has a unique 7-bit address to which it responds. (Slaves can also have 10-bit addresses; see the I2C specification for details.) The master sends an address in the address byte, together with a bit that indicates whether it is to read from or write to the slave device.

Every byte transmitted on the I2C bus, whether it is address or data, is acknowledged with an acknowledge bit. When a master has finished sending a byte (eight data bits) to a slave, it stops driving SDA and waits for the slave to acknowledge the byte. The slave acknowledges the byte by pulling SDA LOW. The master then sends a clock pulse to clock the acknowledge bit. Similarly, when a master has finished reading a byte, it pulls SDA LOW to acknowledge this to the slave. It then sends a clock pulse to clock the bit. (Remember that the master always drives the clock line.)

A not-acknowledge is performed by simply leaving SDA HIGH during an acknowledge cycle. If a device is not present on the bus, and the master attempts to address the device, the master receives a not-acknowledge because no device is present at that address to pull the line LOW.

When a master has finished communicating with a slave, it may issue a STOP condition. When a STOP condition is issued, the bus becomes idle again. A master may also issue another START condition. When a START condition is issued while the bus is active, it is called a repeated START condition.

The TLV320AIC3120 can also respond to and acknowledge a general call, which consists of the master issuing a command with a slave address byte of 00h. This feature is disabled by default, but can be enabled through page 0 / register 34, bit D5.

TLV320AIC3120 i2c_wrt_los585.gif Figure 7-49 I2C Write
TLV320AIC3120 i2c_read_los585.gif Figure 7-50 I2C Read

In the case of an I2C register write, if the master does not issue a STOP condition, then the device enters auto-increment mode. So in the next eight clocks, the data on SDA is treated as data for the next incremental register.

Similarly, in the case of an I2C register read, after the device has sent out the 8-bit data from the addressed register, if the master issues a ACKNOWLEDGE, the slave takes over control of the SDA bus and transmits for the next eight clocks the data of the next incremental register.

Register Map

TLV320AIC3120 Register Map

All features on this device are addressed using the I2C bus. All of the writable registers can be read back. However, some registers contain status information or data, and are only available for reading.

The TLV320AIC3120 device contains several pages of 8-bit registers, and each page can contain up to 128 registers. The register pages are divided up based on functional blocks for this device. Page 0 is the default home page after RESET. Page control occurs by writing a new page value into register 0 of the current page.

The control registers for the TLV320AIC3120 device are described in detail as follows. All registers are 8 bits in width, with D7 referring to the most-significant bit of each register, and D0 referring to the least-significant bit.

Pages 0, 1, 3–5, 8–15, 32–43, and 64–95. All other pages and registers are reserved. Do not read from or write to reserved pages and registers. Also, do not write other than the reset values for the reserved bits and read-only bits of non-reserved registers; otherwise, device functionality failure can occur.

NOTE

Note that the page and register numbers are shown in decimal format. For use in microcode, these decimal values may need to be converted to hexadecimal format. For convenience, the register numbers are shown in both formats, whereas the page numbers are shown only in decimal format.

Table 7-40 Summary of Register Map

PAGE NUMBER DESCRIPTION
0 Page 0 is the default page on power up. Configuration for serial interface, digital I/O, clocking, ADC, DAC, miniDSP settings, and other circuitry.
1 Configuration for analog PGAs, ADC, DAC, output drivers, volume controls, and other circuitry.
3 Register 16 controls the MCLK divider that controls the interrupt pulse duration, debounce timing, and detection block clock.
4–5 ADC AGC and filter coefficients
8–11 DAC buffer A filter and DRC coefficients
12–15 DAC buffer B filter and DRC coefficients
32–43 ADC miniDSP instruction RAM locations
64–95 DAC miniDSP instruction RAM locations

Registers

Control Registers, Page 0 (Default Page): Clock Multipliers, Dividers, Serial Interfaces, Flags, Interrupts, and GPIOs

Table 7-41 Page 0 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

Table 7-42 Page 0 / Register 1 (0x01): Software Reset

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D1 R/W 0000 000 Reserved. Write only zeros to these bits.
D0 R/W 0 0: Don't care
1: Self-clearing software reset for control register

Table 7-43 Page 0 / Register 2 (0x02): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R XXXX XXXX Reserved. Do not write to this register.

Table 7-44 Page 0 / Register 3 (0x03): OT FLAG

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7-D2 R XXXX XX Reserved. Do not write to these bits.
D1 R 1 0: Overtemperature protection flag (active-low). Valid only if speaker amplifier is powered up
1: Normal operation
D0 R/W X Reserved. Do not write to these bits.

Table 7-45 Page 0 / Register 4 (0x04): Clock-Gen Muxing(1)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W 0000 Reserved. Write only zeros to these bits.
D3–D2 R/W 00 00: PLL_CLKIN = MCLK (device pin)
01: PLL_CLKIN = BCLK (device pin)
10: PLL_CLKIN = GPIO1 (device pin)
11: PLL_CLKIN = DIN (can be used for the system where DAC is not used)
D1–D0 R/W 00 00: CODEC_CLKIN = MCLK (device pin)
01: CODEC_CLKIN = BCLK (device pin)
10: CODEC_CLKIN = GPIO1 (device pin)
11: CODEC_CLKIN = PLL_CLK (generated on-chip)
See Section 7.3.13 for more details on clock generation mutiplexing and dividers.

Table 7-46 Page 0 / Register 5 (0x05): PLL P and R Values

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: PLL is powered down.
1: PLL is powered up.
D6–D4 R/W 001 000: PLL divider P = 8
001: PLL divider P = 1
010: PLL divider P = 2
...
110: PLL divider P = 6
111: PLL divider P = 7
D3–D0 R/W 0001 0000: PLL multiplier R = 16
0001: PLL multiplier R = 1
0010: PLL multiplier R = 2
...
1110: PLL multiplier R = 14
1111: PLL multiplier R = 15

Table 7-47 Page 0 / Register 6 (0x06): PLL J-Value

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W 00 Reserved. Write only zeros to these bits.
D5–D0 R/W 00 0100 00 0000: Do not use (reserved)
00 0001: PLL multiplier J = 1
00 0010: PLL multiplier J = 2
...
11 1110: PLL multiplier J = 62
11 1111: PLL multiplier J = 63

Table 7-48 Page 0 / Register 7 (0x07): PLL D-Value MSB(1)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W 00 Reserved. Write only zeros to these bits.
D5–D0 R/W 00 0000 PLL fractional multiplier D-value MSB bits D[13:8]
Note that this register is updated only when Page 0 / Register 8 is written immediately after Page 0 / Register 7.

Table 7-49 Page 0 / Register 8 (0x08): PLL D-Value LSB(1)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 PLL fractional multiplier D-value LSB bits D[7:0]
Note that Page 0 / Register 8 must be written immediately after Page 0 / Register 7.

Table 7-50 Page 0 / Register 9 (0x09) and Page 0 / Register 10 (0x0A): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only zeros to these bits.

Table 7-51 Page 0 / Register 11 (0x0B): DAC NDAC_VAL

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: DAC NDAC divider is powered down.
1: DAC NDAC divider is powered up.
D6–D0 R/W 000 0001 000 0000: DAC NDAC divider = 128
000 0001: DAC NDAC divider = 1
000 0010: DAC NDAC divider = 2
...
111 1110: DAC NDAC divider = 126
111 1111: DAC NDAC divider = 127

Table 7-52 Page 0 / Register 12 (0x0C): DAC MDAC_VAL

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: DAC MDAC divider is powered down.
1: DAC MDAC divider is powered up.
D6–D0 R/W 000 0001 000 0000: DAC MDAC divider = 128
000 0001: DAC MDAC divider = 1
000 0010: DAC MDAC divider = 2
...
111 1110: DAC MDAC divider = 126
111 1111: DAC MDAC divider = 127

Table 7-53 Page 0 / Register 13 (0x0D): DAC DOSR_VAL MSB

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D2 R/W 0000 00 Reserved
D1–D0 R/W 00 DAC OSR value DOSR(9:8)

Table 7-54 Page 0 / Register 14 (0x0E): DAC DOSR_VAL LSB(2)(1)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 1000 0000 DAC OSR Value DOSR (7:0)
0000 0000: DAC OSR (7:0) = 1024 (MSB page 0 / register 13, bits D1–D0 = 00)
0000 0001: DAC OSR (7:0) = 1 (MSB page 0 / register 13, bits D1–D0 = 00)
0000 0010: DAC OSR (7:0) = 2 (MSB page 0 / register 13, bits D1–D0 = 00)
...
1111 1110: DAC OSR (7:0) = 1022 (MSB page 0 / register 13, bits D1–D0 = 11)
1111 1111: DAC OSR (7:0) = 1023 (MSB page 0 / register 13, bits D1–D0 = 11)
Note that Page 0 / Register 14 must be written to immediately after writing to Page 0 / Register 13.
DAC OSR must be an integral multiple of the interpolation in the DAC miniDSP engine (specified in register 16). When using PRB modes, interpolation ratio is 8 while using Filter-A, 4 while using Filter-B and 2 while using Filter-C.

Table 7-55 Page 0 / Register 15 (0x0F): DAC IDAC_VAL(1)(2)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 1000 0000 0000 0000: Number of instruction for DAC miniDSP engine, IDAC = 1024
0000 0001: Number of instruction for DAC miniDSP engine, IDAC = 4
0000 0010: Number of instruction for DAC miniDSP engine, IDAC = 8
...
1111 1101: Number of instruction for DAC miniDSP engine, IDAC = 1012
1111 1110: Number of instruction for DAC miniDSP engine, IDAC = 1016
1111 1111: Number of instruction for DAC miniDSP engine, IDAC = 1020
IDAC must be an integral multiple of the interpolation in the DAC miniDSP engine (specified in register 16). When using PRB modes, interpolation ratio is 8 while using Filter-A, 4 while using Filter-B and 2 while using Filter-C.
The Page 0 / Register 15 programmed value is valid when Page 0 / Register 60, D(4:0) is programmed as 0 0000.

Table 7-56 Page 0 / Register 16 (0x0F): DAC miniDSP Engine Interpolation

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W 0000 Reserved. Do not write to these registers.
D3–D0(1) R/W 1000 0000: Interpolation ratio in DAC miniDSP engine = 16
0001: Interpolation ratio in DAC miniDSP engine = 1
0010: Interpolation ratio in DAC miniDSP engine = 2
...
1101: Interpolation ratio in DAC miniDSP engine = 13
1110: Interpolation ratio in DAC miniDSP engine = 14
1111: Interpolation ratio in DAC miniDSP engine = 15
The Page 0 / Register 16, D(3:0) programmed value is valid when Page 0 / Register 60, D(4:0) is programmed as 0 0000.

Table 7-57 Page 0 / Register 17 (0x11): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Table 7-58 Page 0 / Register 18 (0x12): ADC NADC_VAL

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: ADC NADC divider is powered down and ADC_DSP_CLK = DAC_DSP_CLK.
1: ADC NADC divider is powered up.
D6–D0 R/W 000 0001 000 0000: ADC NADC divider = 128
000 0001: ADC NADC divider = 1
000 0010: ADC NADC divider = 2
...
111 1110: ADC NADC divider = 126
111 1111: ADC NADC divider = 127

Table 7-59 Page 0 / Register 19 (0x13): ADC MADC_VAL

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: ADC MADC divider is powered down and ADC_MOD_CLK = DAC_MOD_CLK.
1: ADC MADC divider is powered up.
D6–D0 R/W 000 0001 000 0000: ADC MADC divider = 128
000 0001: ADC MADC divider = 1
000 0010: ADC MADC divider = 2
...
111 1110: ADC MADC divider = 126
111 1111: ADC MADC divider = 127

Table 7-60 Page 0 / Register 20 (0x14): ADC AOSR_VAL(1)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 1000 0000 0000 0000: ADC OSR AOSR divider = 256
0000 0001: ADC OSR AOSR divider = 1
0000 0010: ADC OSR AOSR divider = 2
...
1111 1110: ADC OSR AOSR divider = 254
1111 1111: ADC OSR AOSR divider = 255
ADC OSR must be an integral multiple of the decimation in the ADC miniDSP engine (specified in register 22). When PRB modes are used, decimation ratio is 4 while using Filter-A, 2 while using Filter-B and 1 while using Filter-C

Table 7-61 Page 0 / Register 21 (0x15): ADC IADC_VAL(1)(2)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 1000 0000 0000 0000: Reserved
0000 0001: Number of instruction for ADC miniDSP engine, IADC = 2
0000 0010: Number of instruction for ADC miniDSP engine, IADC = 4
...
1011 1111: Number of instruction for ADC miniDSP engine, IADC = 382
1100 0000: Number of instruction for ADC miniDSP engine, IADC = 384
1100 0001–1111 1111: Reserved
IADC must be an integral multiple of the decimation in the ADC miniDSP engine (specified in Register 22). When PRB modes are used, decimation ratio is 4 while using Filter-A, 2 while using Filter-B and 1 while using Filter-C
Page 0 / Register 21 programmed value is valid when Page 0/ Register 61, D(4:0) is programmed as 0 0000.

Table 7-62 Page 0 / Register 22 (0x16): ADC miniDSP Engine Decimation

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W 0000 Reserved
D3–D0(1) R/W 0100 0000: Decimation ratio in ADC miniDSP engine = 16
0001: Decimation ratio in ADC miniDSP engine = 1
0010: Decimation ratio in ADC miniDSP engine = 2
...
1101: Decimation ratio in ADC miniDSP engine = 13
1110: Decimation ratio in ADC miniDSP engine = 14
1111: Decimation ratio in ADC miniDSP engine = 15
Page 0 / Register 22, D(3:0) programmed value is valid when Page 0/ Register 61, D(4:0) is programmed as 0 0000.

Table 7-63 Page 0 / Register 23 (0x17) and Page 0 / Register 24 (0x18): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Table 7-64 Page 0 / Register 25 (0x19): CLKOUT MUX

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D3 R/W 0000 0 Reserved
D2–D0 R/W 000 000: CDIV_CLKIN = MCLK (device pin)
001: CDIV_CLKIN = BCLK (device pin)
010: CDIV_CLKIN = DIN (can be used for the systems where DAC is not required)
011: CDIV_CLKIN = PLL_CLK (generated on-chip)
100: CDIV_CLKIN = DAC_CLK (DAC DSP clock - generated on-chip)
101: CDIV_CLKIN = DAC_MOD_CLK (generated on-chip)
110: CDIV_CLKIN = ADC_CLK (ADC DSP clock - generated on-chip)
111: CDIV_CLKIN = ADC_MOD_CLK (generated on-chip)

Table 7-65 Page 0 / Register 26 (0x1A): CLKOUT M Divider Value

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: CLKOUT M divider is powered down.
1: CLKOUT M divider is powered up.
D6–D0 R/W 000 0001 000 0000: CLKOUT divider M = 128
000 0001: CLKOUT divider M = 1
000 0010: CLKOUT divider M = 2
...
111 1110: CLKOUT divider M = 126
111 1111: CLKOUT divider M = 127

Table 7-66 Page 0 / Register 27 (0x1B): Codec Interface Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W 00 00: Codec interface = I2S
01: Codec Interface = DSP
10: Codec interface = RJF
11: Codec interface = LJF
D5–D4 R/W 00 00: Codec interface word length = 16 bits
01: Codec interface word length = 20 bits
10: Codec interface word length = 24 bits
11: Codec interface word length = 32 bits
D3 R/W 0 0: BCLK is input
1: BCLK is output
D2 R/W 0 0: WCLK is input
1: WCLK is output
D1 R/W 0 Reserved
D0 R/W 0 Driving DOUT to High-Impedance for the Extra BCLK Cycle When Data Is Not Being Transferred
0: Disabled
1: Enabled

Table 7-67 Page 0 / Register 28 (0x1C): Data-Slot Offset Programmability

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 Offset (Measured With Respect to WCLK Rising Edge in DSP Mode)
0000 0000: Offset = 0 BCLKs
0000 0001: Offset = 1 BCLK
0000 0010: Offset = 2 BCLKs
...
1111 1110: Offset = 254 BCLKs
1111 1111: Offset = 255 BCLKs

Table 7-68 Page 0 / Register 29 (0x1D): Codec Interface Control 2

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W 00 Reserved
D5 R/W 0 0: DIN-to-DOUT loopback is disabled
1: DIN-to-DOUT loopback is enabled
D4 R/W 0 0: ADC-to-DAC loopback is disabled
1: ADC-to-DAC loopback is enabled
D3 R/W 0 0: BCLK is not inverted (valid for both primary and secondary BCLK)
1: BCLK is inverted (valid for both primary and secondary BCLK)
D2 R/W 0 BCLK and WCLK Active Even With Codec Powered Down (Valid for Both Primary and Secondary BCLK)
0: Disabled
1: Enabled
D1–D0 R/W 00 00: BDIV_CLKIN = DAC_CLK (DAC DSP clock - generated on-chip)
01: BDIV_CLKIN = DAC_MOD_CLK (generated on-chip)
10: BDIV_CLKIN = ADC_CLK (ADC DSP clock - generated on-chip)
11: BDIV_CLKIN = ADC_MOD_CLK (generated on-chip)

Table 7-69 Page 0 / Register 30 (0x1E): BCLK N Divider Value

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: BCLK N-divider is powered down.
1: BCLK N-divider is powered up.
D6–D0 R/W 000 0001 000 0000: BCLK divider N = 128
000 0001: BCLK divider N = 1
000 0010: BCLK divider N = 2
...
111 1110: BCLK divider N = 126
111 1111: BCLK divider N = 127

Table 7-70 Page 0 / Register 31 (0x1F): Codec Secondary Interface Control 1

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 000: Secondary BCLK is obtained from GPIO1 pin.
001: Secondary BCLK is not obtained from GPIO1 pin.
010: Reserved.
011: Secondary BCLK is obtained from DOUT pin.
100: Secondary BCLK is not obtained from DOUT pin.
101–111: Reserved
D4–D2 R/W 000 000: Secondary WCLK is obtained from GPIO1 pin.
001: Secondary WCLK is not obtained from GPIO1 pin.
010: Reserved.
011: Secondary WCLK is obtained from DOUT pin.
100: Secondary WCLK is not obtained from DOUT pin.
101–111: Reserved
D1–D0 R/W 00 00: Secondary DIN is obtained from the GPIO1 pin.
01: Secondary DIN is not obtained from the GPIO1 pin.
10–11: Reserved

Table 7-71 Page 0 / Register 32 (0x20): Codec Secondary Interface Control 2

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 000: ADC_WCLK is obtained from GPIO1 pin.
001–111: Reserved.
D4 R/W 0 Reserved
D3 R/W 0 0: Primary BCLK is fed to codec serial-interface and ClockGen blocks.
1: Secondary BCLK is fed to codec serial-interface and ClockGen blocks.
D2 R/W 0 0: Primary WCLK is fed to codec serial-interface block.
1: Secondary WCLK is fed to codec serial-interface block.
D1 R/W 0 0: ADC_WCLK used in the codec serial-interface block is the same as DAC_WCLK.
1: ADC_WCLK used in the codec serial-interface block = ADC_WCLK.
D0 R/W 0 0: Primary DIN is fed to codec serial-interface block.
1: Secondary DIN is fed to codec serial-interface block.

Table 7-72 Page 0 / Register 33 (0x21): Codec Secondary Interface Control 3

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Primary BCLK output = internally generated BCLK clock
1: Primary BCLK output = secondary BCLK
D6 R/W 0 0: Secondary BCLK output = primary BCLK
1: Secondary BCLK output = internally generated BCLK clock
D5–D4 R/W 00 00: Primary WCLK output = internally generated DAC_fS
01: Primary WCLK output = internally generated ADC_fS clock
10: Primary WCLK output = secondary WCLK
11: Reserved
D3–D2 R/W 00 00: Secondary WCLK output = primary WCLK
01: Secondary WCLK output = internally generated DAC_fS clock
10: Secondary WCLK output = internally generated ADC_fS clock
11: Reserved
D1 R/W 0 0: Primary DOUT = DOUT from codec serial-interface block
1: Primary DOUT = secondary DIN
D0 R/W 0 0: Secondary DOUT = primary DIN
1: Secondary DOUT = DOUT from codec serial interface block

Table 7-73 Page 0 / Register 34 (0x22): I2C Bus Condition

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W 00 Reserved. Write only the reset value to these bits.
D5 R/W 0 0: I2C general-call address is ignored.
1: Device accepts I2C general-call address.
D4–D0 R/W 0 0000 Reserved. Write only zeros to these bits.

Table 7-74 Page 0 / Register 35 (0x23): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only zeros to these bits.

Table 7-75 Page 0 / Register 36 (0x24): ADC Flag Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R 0 0: ADC PGA applied gain ≠ programmed gain
1: ADC PGA applied gain = programmed gain
D6 R 0 0: ADC powered down
1: ADC powered up
D5(1) R 0 0: AGC not saturated
1: AGC applied gain = maximum applicable gain by AGC
D4–D0 R/W X XXXX Reserved. Write only zeros to these bits.
Sticky flag bIt. These is a read-only bit. This bit is automatically cleared once it is read and is set only if the source trigger occurs again.

Table 7-76 Page 0 / Register 37 (0x25): DAC Flag Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R 0 0: DAC powered down
1: DAC powered up
D6 R X Reserved. Do not write to this bit.
D5 R 0 0: HPOUT driver powered down
1: HPOUT driver powered up
D4 R 0 0: Class-D driver powered down
1: Class-D driver powered up
D3–D0 R XXXX Reserved. Do not write to these bits.

Table 7-77 Page 0 / Register 38 (0x26): DAC Flag Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R XXX Reserved. Do not write to these bits.
D4 R 0 0: DAC PGA applied gain ≠ programmed gain
1: DAC PGA applied gain = programmed gain
D3–D0 R XXXX Reserved. Do not write to these bits.

Table 7-78 Page 0 / Register 39 (0x27): Overflow Flags

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R 0 DAC Overflow Flag
0: Overflow has not occurred.
1: Overflow has occurred.
D6 R 0 Reserved.
D5 R 0 DAC Barrel Shifter Output Overflow Flag
0: Overflow has not occurred.
1: Overflow has occurred.
D4 R 0 Reserved.
D3 R 0 Delta-Sigma Mono ADC Overflow Flag
0: Overflow has not occurred.
1: Overflow has occurred.
D2 R/W 0 Reserved. Write only zero to this bit.
D1 R 0 ADC Barrel Shifter Output Overflow Flag
0: Overflow has not occurred.
1: Overflow has occurred.
D0 R/W 0 Reserved. Write only zero to this bit.

Table 7-79 Page 0 / Register 40 (0x28) Through Page 0 / Register 43 (0x2B): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only the reset value to these bits.

Table 7-80 Page 0 / Register 44 (0x2C): Interrupt Flags—DAC

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R 0 0: No short circuit is detected at HPOUT / class-D driver.
1: Short circuit is detected at HPOUT / class-D driver.
D6 R 0 0: Reserved
D5 R X 0: No headset button pressed.
1: Headset button pressed.
D4 R X 0: No headset insertion or removal is detected.
1: Headset insertion or removal is detected.
D3 R 0 0: DAC signal power is less than or equal to the signal threshold of DRC.
1: DAC signal power is above the signal threshold of DRC.
D2 R 0 Reserved.
D1 R 0 DAC miniDSP Engine Standard Interrupt-Port Output.
0: Read a 0 from standard interrupt-port.
1: Read a 1 from standard interrupt-port.
D0 R 0 DAC miniDSP Engine Auxiliary Interrupt-Port Output.
0: Read a 0 from auxiliary interrupt-port.
1: Read a 1 from auxiliary interrupt-port.

Table 7-81 Page 0 / Register 45 (0x2D): Interrupt Flags—ADC

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved. Write only zero to this bit.
D6 R 0 0: ADC signal power greater than noise threshold for AGC.
1: ADC signal power less than noise threshold for AGC.
D5 R 0 Reserved.
D4 R X ADC miniDSP Engine Standard Interrupt Port Output.
0: Read a 0 from standard interrupt-port.
1: Read a 1 from standard interrupt-port.
D3 R X ADC miniDSP Engine Auxiliary Interrupt Port Output.
0: Read a 0 from auxiliary interrupt-port.
1: Read a 1 from auxiliary interrupt-port.
D2 R 0 0: DC measurement using delta-sigma audio ADC is not available.
1: DC measurement using delta-sigma audio ADC is not available.
D1–D0 R/W 00 Reserved. Write only zeros to these bits.

Table 7-82 Page 0 / Register 46 (0x2E): Interrupt Flags—DAC

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R 0 0: No short circuit detected at HPOUT / class-D driver.
1: Short circuit detected at HPOUT / class-D driver.
D6 R 0 Reserved.
D5 R X 0: No headset button pressed.
1: Headset button pressed.
D4 R X 0: Headset removal detected.
1: Headset insertion detected.
D3 R 0 0: DAC signal power is less than or equal to signal threshold of DRC.
1: DAC signal power is greater than signal threshold of DRC.
D2 R 0 Reserved
D1 R 0 DAC miniDSP Engine Standard Interrupt Port Output.
0: Read a 0 from standard interrupt-port.
1: Read a 1 from standard interrupt-port.
D0 R 0 DAC miniDSP Engine Auxiliary Interrupt Port Output.
0: Read a 0 from auxiliary interrupt-port.
1: Read a 1 from auxiliary interrupt-port.

Table 7-83 Page 0 / Register 47 (0x2F): Interrupt Flags – ADC

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R 0 Reserved
D6 R 0 0: Delta-sigma mono ADC signal power greater than noise threshold for the AGC
1: Delta-sigma mono ADC signal power less than noise threshold for the AGC
D5 R 0 Reserved
D4 R X ADC miniDSP Engine Standard Interrupt Port Output
0: Read a 0 from standard interrupt-port
1: Read a 1 from standard interrupt-port
D3 R X ADC miniDSP Engine Auxiliary Interrupt Port Output
0: Read a 0 from auxiliary interrupt-port
1: Read a 1 from auxiliary interrupt-port
D2 R 0 0: DC measurement using delta-sigma audio ADC is not available
1: DC measurement using delta-sigma audio ADC is not available
D1–D0 R 00 Reserved.

Table 7-84 Page 0 / Register 48 (0x30): INT1 Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Headset-insertion detect interrupt is not used in the generation of INT1 interrupt.
1: Headset-insertion detect interrupt is used in the generation of INT1 interrupt.
D6 R/W 0 0: Button-press detect interrupt is not used in the generation of INT1 interrupt.
1: Button-press detect interrupt is used in the generation of INT1 interrupt.
D5 R/W 0 0: DAC DRC signal-power interrupt is not used in the generation of INT1 interrupt.
1: DAC DRC signal-power interrupt is used in the generation of INT1 interrupt.
D4 R/W 0 0: ADC AGC noise interrupt is not used in the generation of INT1 interrupt.
1: ADC AGC noise interrupt is used in the generation of INT1 interrupt.
D3 R/W 0 0: Short-circuit interrupt is not used in the generation of INT1 interrupt.
1: Short-circuit interrupt is used in the generation of INT1 interrupt.
D2 R/W 0 0: Engine-generated interrupt is not used in the generation of INT1 interrupt.
1: Engine-generated interrupt is used in the generation of INT1 interrupt.
D1 R/W 0 0: DC measurement using delta-sigma audio ADC data-available interrupt is not used in the generation of INT1 interrupt
1: DC measurement using delta-sigma audio ADC data-available interrupt is used in the generation of INT1 interrupt
D0 R/W 0 0: INT1 is only one pulse (active-high) of typical 2-ms duration.
1: INT1 is multiple pulses (active-high) of typical 2-ms duration and 4-ms period, until flag registers 44 and 45 are read by the user.

Table 7-85 Page 0 / Register 49 (0x31): INT2 Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Headset-insertion detect interrupt is not used in the generation of INT2 interrupt.
1: Headset-insertion detect interrupt is used in the generation of INT2 interrupt.
D6 R/W 0 0: Button-press detect interrupt is not used in the generation of INT2 interrupt.
1: Button-press detect interrupt is used in the generation of INT2 interrupt.
D5 R/W 0 0: DAC DRC signal-power interrupt is not used in the generation of INT2 interrupt.
1: DAC DRC signal-power interrupt is used in the generation of INT2 interrupt.
D4 R/W 0 0: ADC AGC noise interrupt is not used in the generation of INT2 interrupt.
1: ADC AGC noise interrupt is used in the generation of INT2 interrupt.
D3 R/W 0 0: Short-circuit interrupt is not used in the generation of INT2 interrupt.
1: Short-circuit interrupt is used in the generation of INT2 interrupt.
D2 R/W 0 0: Engine-generated interrupt is not used in the generation of INT2 interrupt.
1: Engine-generated interrupt is used in the generation of INT2 interrupt.
D1 R/W 0 0: DC measurement using delta-sigma audio ADC data-available interrupt is not used in the generation of INT2 interrupt
1: DC measurement using delta-sigma audio ADC data-available interrupt is used in the generation of INT2 interrupt
D0 R/W 0 0: INT2 is only one pulse (active-high) of typical 2-ms duration.
1: INT2 is multiple pulses (active-high) of typical 2-ms duration and 4-ms period, until flag registers 44 and 45 are read by the user.

Table 7-86 Page 0 / Register 50 (0x32): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7-D0 R/W 0000 0000 Reserved. Write only reset values.

Table 7-87 Page 0 / Register 51 (0x33): GPIO1 In/Out Pin Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W XX Reserved. Do not write any value other than reset value.
D5–D2 R/W 0000 0000: GPIO1 disabled (input and output buffers powered down)
0001: GPIO1 is in input mode (can be used as secondary BCLK input, secondary WCLK input, secondary DIN input, ADC_WCLK input, Dig_Mic_In or in ClockGen block).
0010: GPIO1 is used as general-purpose input (GPI).
0011: GPIO1 output = general-purpose output
0100: GPIO1 output = CLKOUT output
0101: GPIO1 output = INT1 output
0110: GPIO1 output = INT2 output
0111: GPIO1 output = ADC_WCLK output for codec interface
1000: GPIO1 output = secondary BCLK output for codec interface
1001: GPIO1 output = secondary WCLK output for codec interface
1010: GPIO1 output = ADC_MOD_CLK output for the digital microphone
1011: GPIO1 output = secondary DOUT for codec interface
1100: Reserved
1101: Reserved
1110: Reserved
1111: Reserved
D1 R X GPIO1 input buffer value
D0 R/W 0 0: GPIO1 general-purpose output value = 0
1: GPIO1 general-purpose output value = 1

Table 7-88 Page 0 / Register 52 (0x34): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R XXXX XXXX Reserved. Do not write to this register.

Table 7-89 Page 0 / Register 53 (0x35): DOUT (OUT Pin) Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 Reserved
D4 R/W 1 0: DOUT bus keeper enabled
1: DOUT bus keeper disabled
D3–D1 R/W 001 000: DOUT disabled (output buffer powered down)
001: DOUT = primary DOUT output for codec interface
010: DOUT = general-purpose output
011: DOUT = CLKOUT output
100: DOUT = INT1 output
101: DOUT = INT2 output
110: DOUT = secondary BCLK output for codec interface
111: DOUT = secondary WCLK output for codec interface
D0 R/W 0 0: DOUT general-purpose output value = 0
1: DOUT general-purpose output value = 1

Table 7-90 Page 0 / Register 54 (0x36): DIN (IN Pin) Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D3 R/W 0000 0 Reserved
D2–D1 R/W 01 00: DIN disabled (input buffer powered down)
01: DIN enabled (can be used as DIN for codec interface, Dig_Mic_In or into ClockGen block)
10: DIN is used as general-purpose input (GPI)
11: Reserved
D0 R X DIN input-buffer value

Table 7-91 Page 0 / Register 55 (0x37) through Page 0 / Register 59 (0x3B): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Table 7-92 Page 0 / Register 60 (0x3C): DAC Processing Block / miniDSP Selection

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 Reserved. Write only default value.
D4–D0 R/W 0 0001 0 0000: DAC miniDSP is used for signal processing.
0 0001–0 0011: Reserved. Do not use
0 0100: DAC signal-processing block PRB_P4
0 0101: DAC signal-processing block PRB_P5
0 0110: DAC signal-processing block PRB_P6
0 0111–0 1011: Reserved. Do not use
0 1100: DAC signal-processing block PRB_P12
0 1101: DAC signal-processing block PRB_P13
0 1110: DAC signal-processing block PRB_P14
0 1111: DAC signal-processing block PRB_P15
1 0000: DAC signal-processing block PRB_P16
1 0001–1 0011: Reserved. Do not use.
1 0100: DAC signal-processing block PRB_P20
1 0101: DAC signal-processing block PRB_P21
1 0110: DAC signal-processing block PRB_P22
1 0111–1 1000: Reserved. Do not use.
1 1001: DAC Signal Processing Block PRB_P25
1 1010–1 1111: Reserved. Do not use.

Table 7-93 Page 0 / Register 61 (0x3D): ADC Processing Block / miniDSP Selection

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 Reserved. Write only default values.
D4–D0 R/W 0 0100 0 0000: ADC miniDSP is used for signal processing.
0 0001–0 0011: Reserved. Do not use.
0 0100: ADC signal-processing block PRB_R4
0 0101: ADC signal-processing block PRB_R5
0 0110: ADC signal-processing block PRB_R6
0 0111–01001: Reserved. Do not use.
0 1010: ADC signal-processing block PRB_R10
0 1011: ADC signal-processing block PRB_R11
0 1100: ADC signal-processing block PRB_R12
0 1101–0 1111: Reserved. Do not use.
1 0000: ADC signal-processing block PRB_R16
1 0001: ADC signal-processing block PRB_R17
1 0010: ADC signal-processing block PRB_R18
1 0011–1 1111: Reserved. Do not write these sequences to these bits.

Table 7-94 Page 0 / Register 62 (0x3E): Programmable miniDSP Instruction Mode-Control Bits

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved
D6 R/W 0 ADC miniDSP engine auxiliary control bit A, which can be used for conditional instructions like JMP
D5 R/W 0 ADC miniDSP engine auxiliary control bit B, which can be used for conditional instructions like JMP
D4 R/W 0 0: Reset ADC miniDSP instruction counter at the start of the new frame.
1: Do not reset ADC miniDSP instruction counter at the start of the new frame.
D3 R/W 0 Reserved
D2 R/W 0 DAC miniDSP engine auxiliary control bit A, which can be used for conditional instructions like JMP
D1 R/W 0 DAC miniDSP engine auxiliary control bit B, which can be used for conditional instructions like JMP
D0 R/W 0 0: Reset DAC miniDSP instruction counter at the start of the new frame.
1: Do not reset DAC miniDSP instruction counter at the start of the new frame.

Table 7-95 Page 0 / Register 63 (0x3F): DAC Data-Path Setup

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: DAC is powered down.
1: DAC is powered up.
D6 R/W 0 Reserved. Write only 0 to this bit.
D5–D4 R/W 01 00: DAC data path = off
01: DAC data path = left data
10: DAC data path = right data
11: DAC data path = left-channel and right-channel data [(L + R) / 2]
D3–D2 R/W 01 Reserved
D1–D0 R/W 00 00: DAC-channel volume-control soft-stepping is enabled for one step per sample period.
01: DAC-channel volume-control soft-stepping is enabled for one step per two sample periods.
10: DAC-channel volume-control soft-stepping is disabled.
11: Reserved. Do not write this sequence to these bits.

Table 7-96 Page 0 / Register 64 (0x40): DAC Volume Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W 0000 Reserved. Write only zeros to these bits.
D3 R/W 1 0: DAC not muted
1: DAC muted
D2–D0 R/W 100 Reserved. Always write reset value.

Table 7-97 Page 0 / Register 65 (0x41): DAC Volume Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0111 1111–0011 0001: Reserved. Do not write these sequences to these bits.
0011 0000: DAC digital gain = 24 dB
0010 1111: DAC digital gain = 23.5 dB
0010 1110: DAC digital gain = 23 dB
...
0011 0100: DAC digital gain = 18 dB
0010 0011: DAC digital gain = 17.5 dB
0010 0010: DAC digital gain = 17 dB
...
0000 0001: DAC digital gain = 0.5 dB
0000 0000: DAC digital gain = 0 dB
1111 1111: DAC digital gain = –0.5 dB
...
1000 0010: DAC digital gain = –63 dB
1000 0001: DAC digital gain = –63.5 dB
1000 0000: Reserved. Do not use.

Table 7-98 Page 0 / Register 66 (0x42): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 Reserved. write only reset values.

Table 7-99 Page 0 / Register 67 (0x43): Headset Detection

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Headset detection disabled
1: Headset detection enabled
D6–D5 R XX 00: No headset detected
01: Headset without microphone is detected
10: Reserved
11: Headset with microphone is detected
D4–D2 R/W 000 Debounce Programming for Glitch Rejection During Headset Detection(1)
000: 16 ms (sampled with 2-ms clock)
001: 32 ms (sampled with 4-ms clock)
010: 64 ms (sampled with 8-ms clock)
011: 128 ms (sampled with 16-ms clock)
100: 256 ms (sampled with 32-ms clock)
101: 512 ms (sampled with 64-ms clock)
110: Reserved
111: Reserved
D1–D0 R/W 00 Debounce programming for glitch rejection during headset button-press detection
00: 0 ms
01: 8 ms (sampled with 1-ms clock)
10: 16 ms (sampled with 2-ms clock)
11: 32 ms (sampled with 4-ms clock)
Note that these times are generated using the 1 MHz reference clock which is defined in Page 3 / Register 16.

Table 7-100 Page 0 / Register 68 (0x44): DRC Control 1

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved. Write only the reset value to these bits.
D6 R/W 0 0: DRC disabled
1: DRC enabled
D5 R/W 0 Reserved. Write only reset value
D4–D2 R/W 011 000: DRC threshold = –3 dB
001: DRC threshold = –6 dB
010: DRC threshold = –9 dB
011: DRC threshold = –12 dB
100: DRC threshold = –15 dB
101: DRC threshold = –18 dB
110: DRC threshold = –21 dB
111: DRC threshold = –24 dB
D1–D0 R/W 11 00: DRC hysteresis = 0 dB
01: DRC hysteresis = 1 dB
10: DRC hysteresis = 2 dB
11: DRC hysteresis = 3 dB

Table 7-101 Page 0 / Register 69 (0x45): DRC Control 2

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D R 0 Reserved. Write only the reset value to these bits.
D6–D3 R/W 0111 DRC Hold Time
0000: DRC Hold Disabled
0001: DRC Hold Time = 32 DAC Word Clocks
0010: DRC Hold Time = 64 DAC Word Clocks
0011: DRC Hold Time = 128 DAC Word Clocks
0100: DRC Hold Time = 256 DAC Word Clocks
0101: DRC Hold Time = 512 DAC Word Clocks
0110: DRC Hold Time = 1024 DAC Word Clocks
0111: DRC Hold Time = 2048 DAC Word Clocks
1000: DRC Hold Time = 4096 DAC Word Clocks
1001: DRC Hold Time = 8192 DAC Word Clocks
1010: DRC Hold Time = 16 384 DAC Word Clocks
1011: DRC Hold Time = 32 768 DAC Word Clocks
1100: DRC Hold Time = 65 536 DAC Word Clocks
1101: DRC Hold Time = 98 304 DAC Word Clocks
1110: DRC Hold Time = 131 072 DAC Word Clocks
1111: DRC Hold Time = 163 840 DAC Word Clocks
D2-D0 R 000 Reserved. Write only the reset value to these bits.

Table 7-102 Page 0 / Register 70 (0x46): DRC Control 3

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W 0000 0000: DRC attack rate = 4 dB per DAC Word Clock
0001: DRC attack rate = 2 dB per DAC word clock
0010: DRC attack rate = 1 dB per DAC word clock
...
1110: DRC attack rate = 2.4414e–5 dB per DAC word clock
1111: DRC attack rate = 1.2207e–5 dB per DAC word clock
D3–D0 R/W 0000 Decay Rate is defined as DR / 2[bits D3-D0 value] dB per DAC Word Clock, where DR = 0.015625 dB
0000: DRC decay rate (DR) = 0.015625 dB per DAC Word Clock
0001: DRC decay rate = DR / 2 dB per DAC Word Clock
0010: DRC decay rate = DR / 22 dB per DAC Word Clock
0011: DRC decay rate = DR / 23 dB per DAC Word Clock
0100: DRC decay rate = DR / 24 dB per DAC Word Clock
0101: DRC decay rate = DR / 25 dB per DAC Word Clock
0110: DRC decay rate = DR / 26 dB per DAC Word Clock
0111: DRC decay rate = DR / 27 dB per DAC Word Clock
1000: DRC decay rate = DR / 28 dB per DAC Word Clock
1001: DRC decay rate = DR / 29 dB per DAC Word Clock
1010: DRC decay rate = DR / 210 dB per DAC Word Clock
1011: DRC decay rate = DR / 211 dB per DAC Word Clock
1100: DRC decay rate = DR / 212 dB per DAC Word Clock
1101: DRC decay rate = DR / 213 dB per DAC Word Clock
1110: DRC decay rate = DR / 214 dB per DAC Word Clock
1111: DRC decay rate = DR / 215 dB per DAC Word Clock

Table 7-103 Page 0 / Register 71 (0x47): Beep Generator (1)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Beep generator is disabled.
1: Beep generator is enabled (self-clearing based on beep duration).
D6 R/W 0 Reserved. Write only reset value.
D5–D0 R/W 00 0000 00 0000: Beep volume control = 2 dB
00 0001: Beep volume control = 1 dB
00 0010: Beep volume control = 0 dB
00 0011: Beep volume control = –1 dB
...
11 1110: Beep volume control = –60 dB
11 1111: Beep volume control = –61 dB
The beep generator is only available in PRB_P25 DAC processing mode.

Table 7-104 Page 0 / Register 72 (0x48): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0 Reserved.

Table 7-105 Page 0 / Register 73 (0x49): Beep Length MSB

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 8 MSBs out of 24 bits for the number of samples for which the beep must be generated.

Table 7-106 Page 0 / Register 74 (0x4A): Beep-Length Middle Bits

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 8 middle bits out of 24 bits for the number of samples for which the beep must be generated.

Table 7-107 Page 0 / Register 75 (0x4B): Beep Length LSB

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 1110 1110 8 LSBs out of 24 bits for the number of samples for which beep must be generated.

Table 7-108 Page 0 / Register 76 (0x4C): Beep Sin(x) MSB

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0001 0000 8 MSBs out of 16 bits for sin(2π × fin / fS), where fin is the beep frequency and fS is the DAC sample rate.

Table 7-109 Page 0 / Register 77 (0x4D): Beep Sin(x) LSB

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 1101 1000 8 LSBs out of 16 bits for sin(2π × fin / fS), where fin is the beep frequency and fS is the DAC sample rate.

Table 7-110 Page 0 / Register 78 (0x4E): Beep Cos(x) MSB

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0111 1110 8 MSBs out of 16 bits for cos(2π × fin / fS), where fin is the beep frequency and fS is the DAC sample rate.

Table 7-111 Page 0 / Register 79 (0x4F): Beep Cos(x) LSB

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 1110 0011 8 LSBs out of 16 bits for cos(2π × fin / fS), where fin is the beep frequency and fS is the DAC sample rate.

Table 7-112 Page 0 / Register 80 (0x50): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved.

Table 7-113 Page 0 / Register 81 (0x51): ADC Digital Mic

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: ADC channel is powered down.
1: ADC channel is powered up.
D6 R/W 0 Reserved
D5–D4 R/W 00 00: Digital microphone input is obtained from GPIO1 pin.
01: Reserved.
10: Digital microphone input is obtained from DIN pin.
11: Reserved.
D3 R/W 0 0: Digital microphone is not enabled for delta-sigma mono ADC channel.
1: Digital microphone is enabled for delta-sigma mono ADC channel
D2 R/W 0 Reserved
D1–D0 R/W 00 00: ADC channel volume control soft-stepping is enabled for one step per sample period.
01: ADC channel volume control soft-stepping is enabled for one step per two sample periods.
10: ADC channel volume control soft-stepping is disabled.
11: Reserved. Do not write this sequence to these bits.

Table 7-114 Page 0 / Register 82 (0x52): ADC Digital Volume Control Fine Adjust

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 1 0: ADC channel not muted
1: ADC channel muted
D6–D4 R/W 000 Delta-Sigma Mono ADC Channel Volume Control Fine Gain
000: 0 dB
001: –0.1 dB
010: –0.2 dB
011: –0.3 dB
100: –0.4 dB
101–111: Reserved
D3–D0 R/W 0000 Reserved. Write only zeros to these bits.

Table 7-115 Page 0 / Register 83 (0x53): ADC Digital Volume Control Coarse Adjust

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved
D6–D0 000 0000 Delta-Sigma Mono ADC Channel Volume-Control Coarse Gain
100 0000–110 0111: Reserved
110 1000: –12 dB
110 1001: –11.5 dB
...
111 1111: –0.5 dB
000 0000: 0 dB
000 0001: 0.5 dB
...
010 0111: 19.5 dB
010 1000: 20 dB
010 1001–011 1111: Reserved

Table 7-116 Page 0 / Register 84 (0x54) and Page 0 / Register 85 (0x55): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W XXXX XXXX Reserved. Write only the reset value to these bits.

Table 7-117 Page 0 / Register 86 (0x56): AGC Control 1

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: AGC disabled
1: AGC enabled
D6–D4 R/W 000 000: AGC target level = –5.5 dB
001: AGC target level = –8 dB
010: AGC target level = –10 dB
011: AGC target level = –12 dB
100: AGC target level = –14 dB
101: AGC target level = –17 dB
110: AGC target level = –20 dB
111: AGC target level = –24 dB
D3–D0 R/W 0000 Reserved. Write only zeros to these bits.

Table 7-118 Page 0 / Register 87 (0x57): AGC Control 2

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W 00 00: AGC hysterysis setting of 1 dB
01: AGC hysterysis setting of 2 dB
10: AGC hysterysis setting of 4 dB
11: AGC hysterysis disabled
D5–D1 R/W 00 000 00 000: AGC noise and silence detection is disabled.
00 001: AGC noise threshold = –30 dB
00 010: AGC noise threshold = –32 dB
00 011: AGC noise threshold = –34 dB
...
11 101: AGC noise threshold = –86 dB
11 110: AGC noise threshold = –88 dB
11 111: AGC noise threshold = –90 dB
D0 R/W 0 Reserved. Write only zero to this bit.

Table 7-119 Page 0 / Register 88 (0x58): AGC Maximum Gain

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved. Write only zero to this bit.
D6–D0 R/W 111 1111 000 0000: AGC maximum gain = 0 dB
000 0001: AGC maximum gain = 0.5 dB
000 0010: AGC maximum gain = 1 dB
...
111 0011: AGC maximum gain = 57.5 dB
111 0100: AGC maximum gain = 58 dB
111 0101: AGC maximum gain = 58.5 dB
111 0110: AGC maximum gain = 59 dB
111 0111: AGC maximum gain = 59.5 dB
111 1000–111 1111: Reserved. Do not write these sequences to these bits.

Table 7-120 Page 0 / Register 89 (0x59): AGC Attack Time

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D3 R/W 0000 0 0000 0: AGC attack time = 1 × (32 / fS) where fS is the ADC sample rate
0000 1: AGC attack time = 3 × (32 / fS) where fS is the ADC sample rate
0001 0: AGC attack time = 5 × (32 / fS) where fS is the ADC sample rate
0001 1: AGC attack time = 7 × (32 / fS) where fS is the ADC sample rate
0010 0: AGC attack time = 9 × (32 / fS) where fS is the ADC sample rate
...
1111 0: AGC attack time = 61 × (32 / fS) where fS is the ADC sample rate
1111 1: AGC attack time = 63 × (32 / fS) where fS is the ADC sample rate
D2–D0 R/W 000 000: Multiply factor for the programmed AGC attack time = 1
001: Multiply factor for the programmed AGC attack time = 2
010: Multiply factor for the programmed AGC attack time = 4
...
111: Multiply factor for the programmed AGC attack time = 128

Table 7-121 Page 0 / Register 90 (0x5A): AGC Decay Time

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D3 R/W 0000 0 0000 0: AGC decay time = 1 × (512 / fS)
0000 1: AGC decay time = 3 × (512 / fS)
0001 0: AGC decay time = 5 × (512 / fS)
0001 1: AGC decay time = 7 × (512 / fS)
0010 0: AGC decay time = 9 × (512 / fS)
...
1111 0: AGC decay time = 61 × (512 / fS)
1111 1: AGC decay time = 63 × (512 / fS)
D2–D0 R/W 000 000: Multiply factor for the programmed AGC decay time = 1
001: Multiply factor for the programmed AGC decay time = 2
010: Multiply factor for the programmed AGC decay time = 4
...
111: Multiply factor for the programmed AGC decay time = 128

Table 7-122 Page 0 / Register 91 (0x5B): AGC Noise Debounce

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 Reserved. Write only zeros to these bits.
D4–D0 R/W 0 0000 0 0000: AGC noise debounce = 0 / fS
0 0001: AGC noise debounce = 4 / fS
0 0010: AGC noise debounce = 8 / fS
0 0011: AGC noise debounce = 16 / fS
0 0100: AGC noise debounce = 32 / fS
0 0101: AGC noise debounce = 64 / fS
0 0110: AGC noise debounce = 128 / fS
0 0111: AGC noise debounce = 256 / fS
0 1000: AGC noise debounce = 512 / fS
0 1001: AGC noise debounce = 1024 / fS
0 1010: AGC noise debounce = 2048 / fS
0 1011: AGC noise debounce = 4096 / fS
0 1100: AGC noise debounce = 2 × 4096 / fS
0 1101: AGC noise debounce = 3 × 4096 / fS
0 1110: AGC noise debounce = 4 × 4096 / fS
...
1 1110: AGC noise debounce = 20 × 4096 / fS
1 1111: AGC noise debounce = 21 × 4096 / fS

Table 7-123 Page 0 / Register 92 (0x5C): AGC Signal Debounce

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W 0000 Reserved. Write only zeros to these bits.
D3–D0 R/W 0000 0000: AGC signal debounce = 0 / fS
0001: AGC signal debounce = 4 / fS
0010: AGC signal debounce = 8 / fS
0011: AGC signal debounce = 16 / fS
0100: AGC signal debounce = 32 / fS
0101: AGC signal debounce = 64 / fS
0110: AGC signal debounce = 128 / fS
0111: AGC signal debounce = 256 / fS
1000: AGC signal debounce = 512 / fS
1001: AGC signal debounce = 1024 / fS
1010: AGC signal debounce = 2048 / fS
1011: AGC signal debounce = 2 × 2048 / fS
1100: AGC signal debounce = 3 × 2048 / fS
1101: AGC signal debounce = 4 × 2048 / fS
1110: AGC signal debounce = 5 × 2048 / fS
1111: AGC signal debounce = 6 × 2048 / fS

Table 7-124 Page 0 / Register 93 (0x5D): AGC Gain-Applied Reading

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R XXXX XXXX 1110 1000: ADC channel AGC gain = –12 dB
1110 1001: ADC channel AGC gain = –11.5 dB
...
0000 0000: ADC channel AGC gain = 0 dB
...
0111 0110: ADC channel AGC gain = 59 dB
0111 0111: ADC channel AGC gain = 59.5 dB

Table 7-125 Page 0 / Register 94 (0x5E) Through Page 0 / Register 101 (0x65): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Table 7-126 Page 0 / Register 102 (0x66): ADC DC Measurement 1

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: DC measurement is disabled for mono ADC channel
1: DC measurement is enabled for mono ADC channel
D6 R/W 0 Reserved. Write only reset value.
D5 R/W 0 0: DC measurement occurs based on first-order sync filter with averaging of 2D
1: DC measurement occurs based on first-order low-pass IIR filter whose coefficients are calculated based on D value
D4–D0 R/W 00000 DC Measurement D setting:
00000: Reserved. Don't use.
00001: D = 1
00010: D = 2
...
10011: D = 19
10100: D = 20
10101 to 11111: Reserved. Don't use.

Table 7-127 Page 0 / Register 103 (0x67): ADC DC Measurement 2

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved. Write only reset value.
D6 R/W 0 0: DC measurement data update is enabled.
1: DC measurement data update is disabled. User can read the last updated data without any data corruption.
D5 R/W 0 0: For IIR based DC measurement, the measurement value is the instantaneous output of the IIR filter
1: For IIR based DC measurement, the measurement value is update before periodic clearing of the IIR filter
D4–D0 R/W 00000 IIR based DC measurement, average time setting:
00000: Infinite average is used
00001: Averaging time is 21 ADC modulator clock periods
00010: Averaging time is 22 ADC modulator clock periods
...
10011: Averaging time is 219 ADC modulator clock periods
10100: Averaging time is 220 ADC modulator clock periods
10101 to 11111: Reserved. Don't use.

Table 7-128 Page 0 / Register 104 (0x67): ADC DC Measurement Output 1

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R 0000 0000 ADC DC Measurement Output (23:16)

Table 7-129 Page 0 / Register 105 (0x68): ADC DC Measurement Output 2

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R 0000 0000 ADC DC Measurement Output (15:8)

Table 7-130 Page 0 / Register 106 (0x69): ADC DC Measurement Output 3

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R 0000 0000 ADC DC Measurement Output (7:0)

Table 7-131 Page 0 / Register 107 (0x0B) Through Page 0 / Register 115 (0x73): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Table 7-132 Page 0 / Register 116 (0x74): VOL/MICDET-Pin SAR ADC — Volume Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: DAC volume control is controlled by control register. (7-bit Vol ADC is powered down)
1: DAC volume control is controlled by pin.
D6 R/W 0 0: Internal on-chip RC oscillator is used for the 7-bit Vol ADC for pin volume control.
1: MCLK is used for the 7-bit Vol ADC for pin volume control.
D5–D4 R/W 00 00: No hysteresis for volume control ADC output
01: Hysteresis of ±1 bit
10: Hysteresis of ±2 bits
11: Reserved. Do not write this sequence to these bits.
D3 R/W 0 Reserved. Write only reset value.
D2–D0 R/W 000 Throughput of the 7-bit Vol ADC for pin volume control, frequency based on  MCLK or internal oscillator.
MCLK = 12 MHz Internal Oscillator Source
000: Throughput =
001: Throughput =
010: Throughput =
011: Throughput =
100: Throughput =
101: Throughput =
110: Throughput =
111: Throughput =
15.625 Hz
31.25 Hz
62.5 Hz
125 Hz
250 Hz
500 Hz
1 kHz
2 kHz
10.68 Hz
21.35 Hz
42.71 Hz
8.2 Hz
170 Hz
340 Hz
680 Hz
1.37 kHz
Note: These values are based on a nominal oscillator frequency of 8.2 MHz. The values scale to the actual oscillator frequency.

Table 7-133 Page 0 / Register 117 (0x75): VOL/MICDET-Pin Gain

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved. Write only zero to this bit.
D6–D0 R XXX XXXX 000 0000: Gain applied by pin volume control = 18 dB
000 0001: Gain applied by pin volume control = 17.5 dB
000 0010: Gain applied by pin volume control = 17 dB
...
010 0011: Gain applied by pin volume control = 0.5 dB
010 0100: Gain applied by pin volume control = 0 dB
010 0101: Gain applied by pin volume control = –0.5 dB
...
101 1001: Gain applied by pin volume control = –26.5 dB
101 1010: Gain applied by pin volume control = –27 dB
101 1011: Gain applied by pin volume control = –28 dB
...
111 1101: Gain applied by pin volume control = –62 dB
111 1110: Gain applied by pin volume control = –63 dB
111 1111: Reserved.

Table 7-134 Page 0 / Register 118 (0x76) Through Page 0 / Register 127 (0x7F): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Control Registers, Page 1: DAC and ADC Routing, PGA, Power-Controls, and MISC Logic-Related Programmability

Table 7-135 Page 1 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

Table 7-136 Page 1 / Register 1 (0x01) Through Page 1 / Register 29 (0x1D): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Table 7-137 Page 1 / Register 30 (0x1E): Headphone and Speaker Amplifier Error Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D2 R/W 0000 00 Reserved
D1 R/W 0 0: Reset SP (speaker driver) power-up control bits on short-circuit detection.
1: SP (speaker driver) power-up control bits remain unchanged on short-circuit detection.
D0 R/W 0 0: Reset HPOUT power-up control bit on short-circuit detection if page 1 / register 31, bit D1 = 1.
1: HPOUT power-up control bits remain unchanged on short-circuit detection.

Table 7-138 Page 1 / Register 31 (0x1F): Headphone Drivers

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: HPOUT output driver is powered down.
1: HPOUT output driver is powered up.
D6-D5 R/W 00 Reserved. Write only zero to this bit.
D4–D3 R/W 00 00: Output common-mode voltage = 1.35 V
01: Output common-mode voltage = 1.5 V
10: Output common-mode voltage = 1.65 V
11: Output common-mode voltage = 1.8 V
D2 R/W 1 Reserved. Write only 1 to this bit.
D1 R/W 0 0: If short-circuit protection is enabled for headphone driver and short circuit detected, device limits the
    maximum current to the load.
1: If short-circuit protection is enabled for headphone driver and short circuit detected, device powers
    down the output driver.
D0 R 0 0: Short circuit is not detected on the headphone driver.
1: Short circuit is detected on the headphone driver.

Table 7-139 Page 1 / Register 32 (0x20): Class-D Speaker Amplifier

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Class-D output driver is powered down.
1: Class-D output driver is powered up.
D6–D1 R/W 000 011 Reserved. Write only the reset value to this bit.
D0 R 0 0: Short circuit is not detected on the class-D driver. Valid only if class-D amplifier is powered up. For
    short-circuit flag sticky bit, see page 0 / register 44.
1: Short circuit is detected on the class-D driver. Valid only if class-D amp is powered-up. For short-
    circuit flag sticky bit, see page 0 / register 44.

Table 7-140 Page 1 / Register 33 (0x21): HP Output Drivers POP Removal Settings

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: If the power down sequence is activated by device software, power down using page 1 / register 46,
││ bit D7, then power down the DAC simultaneously with the HP and SP amplifiers.
1: If the power down sequence is activated by device software, power down using page 1 / register 46,
││ bit D7, then power down DAC only after HP and SP amplifiers are completely powered down. This is to
││ optimize power-down POP.
D6–D3 R/W 0111 0000: Driver power-on time = 0 μs
0001: Driver power-on time = 15.3 μs
0010: Driver power-on time = 153 μs
0011: Driver power-on time = 1.53 ms
0100: Driver power-on time = 15.3 ms
0101: Driver power-on time = 76.2 ms
0110: Driver power-on time = 153 ms
0111: Driver power-on time = 304 ms
1000: Driver power-on time = 610 ms
1001: Driver power-on time = 1.22 s
1010: Driver power-on time = 3.04 s
1011: Driver power-on time = 6.1 s
1100–1111: Reserved. Do not write these sequences to these bits.
Note: These values are based on typical oscillator frequency of 8.2 MHz. Scale according to the actual oscillator frequency.
D2–D1 R/W 11 00: Driver ramp-up step time = 0 ms
01: Driver ramp-up step time = 0.98 ms
10: Driver ramp-up step time = 1.95 ms
11: Driver ramp-up step time = 3.9 ms
Note: These values are based on typical oscillator frequency of 8.2 MHz. Scale according to the actual oscillator frequency.
D0 R/W 0 0: Weakly driven output common-mode voltage is generated from resistor divider of the AVDD supply.
1: Reserved

Table 7-141 Page 1 / Register 34 (0x22): Output Driver PGA Ramp-Down Period Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved. Write only the reset value to this bit.
D6–D4 R/W 000 Speaker power-up wait time (duration based on using internal oscillator)
000: Wait time = 0 ms
001: Wait time = 3.04 ms
010: Wait time = 7.62 ms
011: Wait time = 12.2 ms
100: Wait time = 15.3 ms
101: Wait time = 19.8 ms
110: Wait time = 24.4 ms
111: Wait time = 30.5 ms
Note: These values are based on typical oscillator frequency of 8.2 MHz. Scale according to the actual oscillator frequency.
D3–D0 R/W 0000 Reserved. Write only the reset value to these bits.

Table 7-142 Page 1 / Register 35 (0x23): DAC Output Mixer Routing

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 R/W 00 00: DAC is not routed anywhere.
01: DAC is routed to the mixer amplifier.
10: DAC is routed directly to the HPOUT driver.
11: Reserved
D5 R/W 0 0: MIC1LP input is not routed to the left-channel mixer amplifier.
1: MIC1LP input is routed to the left-channel mixer amplifier.
D4 0 0: MIC1RP input is not routed to the left-channel mixer amplifier.
1: MIC1RP input is routed to the left-channel mixer amplifier.
D3–D0 R/W 0000 Reserved. Write only reset values.

Table 7-143 Page 1 / Register 36 (0x24): Analog Volume to HPOUT

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Analog volume control is not routed to HPOUT output driver.
1: Analog volume control is routed to HPOUT output driver.
D6–D0 R/W 111 1111 Analog volume control gain (nonlinear) for the HPOUT output driver, 0 dB to –78 dB. See Table 7-33.

Table 7-144 Page 1 / Register 37 (0x25): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0111 1111 Reserved

Table 7-145 Page 1 / Register 38 (0x26): Analog Volume to Class-D Output Driver

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Analog volume control output is not routed to class-D output driver.
1: Left-channel Aanalog volume control output is routed to class-D output driver.
D6–D0 R/W 111 1111 Left-channel Aanalog volume control output gain (non-linear) for the class-D output driver, 0 dB to –78 dB. See Table 7-33.

Table 7-146 Page 1 / Register 39 (0x27): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0111 1111 Reserved

Table 7-147 Page 1 / Register 40 (0x28): HPOUT Driver

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 Reserved. Write only zero to this bit.
D6–D3 R/W 0000 0000: HPOUT driver PGA = 0 dB
0001: HPOUT driver PGA = 1 dB
0010: HPOUT driver PGA = 2 dB
...
1000: HPOUT driver PGA = 8 dB
1001: HPOUT driver PGA = 9 dB
1010–1111: Reserved. Do not write these sequences to these bits.
D2 R/W 0 0: HPOUT driver is muted.
1: HPOUT driver is not muted.
D1 R/W 1 Reserved
D0 R 0 0: Not all programmed gains to HPOUT have been applied yet.
1: All programmed gains to HPOUT have been applied.

Table 7-148 Page 1 / Register 41 (0x29): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to this register.

Table 7-149 Page 1 / Register 42 (0x2A): Class-D Output Driver Driver

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 Reserved. Write only zeros to these bits.
D4–D3 R/W 00 00: Class-D driver output stage gain = 6 dB
01: Class-D driver output stage gain = 12 dB
10: Class-D driver output stage gain = 18 dB
11: Class-D driver output stage gain = 24 dB
D2 R/W 0 0: Class-D driver is muted.
1: Class-D driver is not muted.
D1 R/W 0 Reserved. Write only zero to this bit.
D0 R 0 0: Not all programmed gains to the Class-D driver have been applied yet.
1: All programmed gains to the Class-D driver have been applied.

Table 7-150 Page 1 / Register 43 (0x2B): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7-D0 R/W XXXX XXXX Reserved. Write only zero to this bit.

Table 7-151 Page 1 / Register 44 (0x2C): HP Driver Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D5 R/W 000 Debounce time for the headset short-circuit detection
(1) MCLK/DIV (Page 3 / register 16) = 1-MHz Source Internal Oscillator Source
000: Debounce time =
001: Debounce time =
010: Debounce time =
011: Debounce time =
100: Debounce time =
101: Debounce time =
110: Debounce time =
111: Debounce time =
0 μs
8 μs
16 μs
32 μs
64 μs
128 μs
256 μs
512 μs
0 μs
7.8 μs
15.6 μs
31.2 μs
62.4 μs
124.9 μs
250 μs
500 μs
Note: These values are based on a nominal oscillator frequency of 8.2 MHz. The values scale to the actual oscillator frequency.
D4–D3 R/W 00 00: Default mode for the DAC
01: DAC performance increased by increasing the current
10: Reserved
11: DAC performance increased further by increasing the current again
D2 R/W 0 0: HPOUT output driver is programmed as headphone driver.
1: HPOUT output driver is programmed as lineout driver.
D1-D0 R/W 0 Reserved. Write only zero to this bit.
The clock used for the debounce has a clock period = debounce duration / 8.

Table 7-152 Page 1 / Register 45 (0x2D): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Do not write to these registers.

Table 7-153 Page 1 / Register 46 (0x2E): MICBIAS

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: Device software power down is not enabled.
1: Device software power down is enabled.
D6–D4 R/W 000 Reserved. Write only zeros to these bits.
D3 R/W 0 0: Programmed MICBIAS is not powered up if headset detection is enabled but headset is not inserted.
1: Programmed MICBIAS is powered up even if headset is not inserted.
D2 R/W 0 Reserved. Write only zero to this bit.
D1–D0 R/W 00 00: MICBIAS output is powered down.
01: MICBIAS output is powered to 2 V.
10: MICBIAS output is powered to 2.5 V.
11: MICBIAS output is powered to AVDD.

Table 7-154 Page 1 / Register 48 (0x30): Delta-Sigma Mono ADC Channel Fine-Gain Input Selection for P-Terminal

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6
(1)
R/W 00 00: MIC1LP is not selected for the MIC PGA.
01: MIC1LP is selected for the MIC PGA with feed-forward resistance RIN = 10 kΩ.
10: MIC1LP is selected for the MIC PGA with feed-forward resistance RIN = 20 kΩ.
11: MIC1LP is selected for the MIC PGA with feed-forward resistance RIN = 40 kΩ.
D5–D4 R/W 00 00: MIC1RP is not selected for the MIC PGA.
01: MIC1RP is selected for the MIC PGA with feed-forward resistance RIN = 10 kΩ
10: MIC1RP is selected for the MIC PGA with feed-forward resistance RIN = 20 kΩ
11: MIC1RP is selected for the MIC PGA with feed-forward resistance RIN = 40 kΩ
D3–D2 R/W 00 00: MIC1LM is not selected for the MIC PGA.
01: MIC1LM is selected for the MIC PGA with feed-forward resistance RIN = 10 kΩ
10: MIC1LM is selected for the MIC PGA with feed-forward resistance RIN = 20 kΩ
11: MIC1LM is selected for the MIC PGA with feed-forward resistance RIN = 40 kΩ
D1–D0 R/W 00 Reserved. Write only zeros to these bits.
Input impedance selection affects the microphone PGA gain. See Section 7.3.10.1 for details.

Table 7-155 Page 1 / Register 49 (0x31): ADC Input Selection for M-Terminal

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D6 (1) R/W 00 00: CM is not selected for the MIC PGA.
01: CM is selected for the MIC PGA with feed-forward resistance RIN = 10 kΩ.
10: CM is selected for the MIC PGA with feed-forward resistance RIN = 20 kΩ.
11: CM is selected for the MIC PGA with feed-forward resistance RIN = 40 kΩ.
D5–D4 00 00: MIC1LM is not selected for the MIC PGA.
01: MIC1LM is selected for the MIC PGA with feed-forward resistance RIN = 10 kΩ.
10: MIC1LM is selected for the MIC PGA with feed-forward resistance RIN = 20 kΩ.
11: MIC1LM is selected for the MIC PGA with feed-forward resistance RIN = 40 kΩ.
D3–D0 R/W 0000 Reserved. Write only zeros to these bits.

Table 7-156 Page 1 / Register 50 (0x32): Input CM Settings

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 0 0: MIC1LP input is floating, if it is not used for the MIC PGA and analog bypass.
1: MIC1LP input is connected to CM internally, if it is not used for the MIC PGA and analog bypass.
D6 R/W 0 0: MIC1RP input is floating, if it is not used for the MIC PGA and analog bypass.
1: MIC1RP input is connected to CM internally, if it is not used for the MIC PGA and analog bypass.
D5 R/W 0 0: MIC1LM input is floating, if it is not used for the MIC PGA.
1: MIC1LM input is connected to CM internally, if it is not used for the MIC PGA.
D4–D1 R/W 00 00 Reserved. Write only zeros to these bits.
D0 R 0 0: Not all programmed analog gains to the ADC have been applied yet.
1: All programmed analog gains to the ADC have been applied.

Table 7-157 Page 1 / Register 51 (0x33) Through Page 1 / Register 127 (0x7F): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only the reset value to these bits.

Control Registers, Page 3: MCLK Divider for Programmable Delay Timer

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-158 Page 3 / Register 0: Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The only register used in page 3 is register 16. The remaining page-3 registers are reserved and must not be written to.

Table 7-159 Page 3 / Register 16: Timer Clock MCLK Divider

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7 R/W 1 0: Internal oscillator is used for programmable delay timer.
1: External MCLK(1) is used for programmable delay timer.
D6–D0 R/W 000 0001 MCLK Divider to Generate 1-MHz Clock for the Programmable Delay Timer
000 0000: MCLK divider = 128
000 0001: MCLK divider = 1
000 0010: MCLK divider = 2
...
111 1110: MCLK divider = 126
111 1111: MCLK divider = 127
External clock is used only to control the delay programmed between the conversions and not used for doing the actual conversion. This feature is provided in case a more accurate delay is desired because the internal oscillator frequency varies from device to device.

Control Registers, Page 4: ADC Digital Filter Coefficients

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-160 Page 4 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-4 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers must not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register must always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers must be written in this sequence. is a list of the page-4 registers, excepting the previously described register 0.

Table 7-161 Page-4 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) XXXX XXXX Reserved. Do not write to this register.
 2 (0x02) 0000 0001 Coefficient N0(15:8) for AGC LPF (first-order IIR) used as averager to detect level or coefficient C1(15:8) of ADC miniDSP
 3 (0x03) 0001 0111 Coefficient N0(7:0) for AGC LPF (first-order IIR) used as averager to detect level or coefficient C1(7:0) of ADC miniDSP
 4 (0x04) 0000 0001 Coefficient N1(15:8) for AGC LPF (first-order IIR) used as averager to detect level or coefficient C2(15:8) of ADC miniDSP
 5 (0x05) 0001 0111 Coefficient N1(7:0) for AGC LPF (first-order IIR) used as averager to detect level or coefficient C2(7:0) of ADC miniDSP
 6 (0x06) 0111 1101 Coefficient D1(15:8) for AGC LPF (first-order IIR) used as averager to detect level or coefficient C3(15:8) of ADC miniDSP
 7 (0x07) 1101 0011 Coefficient D1(7:0) for AGC LPF (first-order IIR) used as averager to detect level or coefficient C3(7:0) of ADC miniDSP
 8 (0x08) 0111 1111 Coefficient N0(15:8) for ADC-programmable first-order IIR or coefficient C4(15:8) of ADC miniDSP
 9 (0x09) 1111 1111 Coefficient N0(7:0) for ADC-programmable first-order IIR or coefficient C4(7:0) of ADC miniDSP
10 (0x0A) 0000 0000 Coefficient N1(15:8) for ADC-programmable first-order IIR or coefficient C5(15:8) of ADC miniDSP
11 (0x0B) 0000 0000 Coefficient N1(7:0) for ADC-programmable first-order IIR or coefficient C5(7:0) of ADC miniDSP
12 (0x0C) 0000 0000 Coefficient D1(15:8) for ADC-programmable first-order IIR or coefficient C6(15:8) of ADC miniDSP
13 (0x0D) 0000 0000 Coefficient D1(7:0) for ADC-programmable first-order IIR or coefficient C6(7:0) of ADC miniDSP
14 (0x0E) 0111 1111 Coefficient N0(15:8) for ADC Biquad A or coefficient FIR0(15:8) for ADC FIR filter or coefficient C7(15:8) of ADC miniDSP
15 (0x0F) 1111 1111 Coefficient N0(7:0) for ADC Biquad A or coefficient FIR0(7:0) for ADC FIR filter or coefficient C7(7:0) of ADC miniDSP
16 (0x10) 0000 0000 Coefficient N1(15:8) for ADC Biquad A or coefficient FIR1(15:8) for ADC FIR filter or coefficient C8(15:8) of ADC miniDSP
17 (0x11) 0000 0000 Coefficient N1(7:0) for ADC Biquad A or coefficient FIR1(7:0) for ADC FIR filter or coefficient C8(7:0) of ADC miniDSP
18 (0x12) 0000 0000 Coefficient N2(15:8) for ADC Biquad A or coefficient FIR2(15:8) for ADC FIR filter or coefficient C9(15:8) of ADC miniDSP
19 (0x13) 0000 0000 Coefficient N2(7:0) for ADC Biquad A or coefficient FIR2(7:0) for ADC FIR filter or coefficient C9(7:0) of ADC miniDSP
20 (0x14) 0000 0000 Coefficient D1(15:8) for ADC Biquad A or coefficient FIR3(15:8) for ADC FIR filter or coefficient C10(15:8) of ADC miniDSP
21 (0x15) 0000 0000 Coefficient D1(7:0) for ADC Biquad A or coefficient FIR3(7:0) for ADC FIR filter or coefficient C10(7:0) of ADC miniDSP
22 (0x16) 0000 0000 Coefficient D2(15:8) for ADC Biquad A or coefficient FIR4(15:8) for ADC FIR filter or coefficient C11(15:8) of ADC miniDSP
23 (0x17) 0000 0000 Coefficient D2(7:0) for ADC Biquad A or coefficient FIR4(7:0) for ADC FIR filter or coefficient C11(7:0) of ADC miniDSP
24 (0x18) 0111 1111 Coefficient N0(15:8) for ADC Biquad B or coefficient FIR5(15:8) for ADC FIR filter or coefficient C12(15:8) of ADC miniDSP
25 (0x19) 1111 1111 Coefficient N0(7:0) for ADC Biquad B or coefficient FIR5(7:0) for ADC FIR filter or coefficient C12(7:0) of ADC miniDSP
26 (0x1A) 0000 0000 Coefficient N1(15:8) for ADC Biquad B or coefficient FIR6(15:8) for ADC FIR filter or coefficient C13(15:8) of ADC miniDSP
27 (0x1B) 0000 0000 Coefficient N1(7:0) for ADC Biquad B or coefficient FIR6(7:0) for ADC FIR filter or coefficient C13(7:0) of ADC miniDSP
28 (0x1C) 0000 0000 Coefficient N2(15:8) for ADC Biquad B or coefficient FIR7(15:8) for ADC FIR filter or coefficient C14(15:8) of ADC miniDSP
29 (0x1D) 0000 0000 Coefficient N2(7:0) for ADC Biquad B or coefficient FIR7(7:0) for ADC FIR filter or coefficient C14(7:0) of ADC miniDSP
30 (0x1E) 0000 0000 Coefficient D1(15:8) for ADC Biquad B or coefficient FIR8(15:8) for ADC FIR filter or coefficient C15(15:8) of ADC miniDSP
31 (0x1F) 0000 0000 Coefficient D1(7:0) for ADC Biquad B or coefficient FIR8(7:0) for ADC FIR filter or coefficient C15(7:0) of ADC miniDSP
32 (0x20) 0000 0000 Coefficient D2(15:8) for ADC Biquad B or coefficient FIR9(15:8) for ADC FIR filter or coefficient C16(15:8) of ADC miniDSP
33 (0x21) 0000 0000 Coefficient D2(7:0) for ADC Biquad B or coefficient FIR9(7:0) for ADC FIR filter or coefficient C16(7:0) of ADC miniDSP
34 (0x22) 0111 1111 Coefficient N0(15:8) for ADC Biquad C or coefficient FIR10(15:8) for ADC FIR filter or coefficient C17(15:8) of ADC miniDSP
35 (0x23) 1111 1111 Coefficient N0(7:0) for ADC Biquad C or coefficient FIR10(7:0) for ADC FIR filter or coefficient C17(7:0) of ADC miniDSP
36 (0x24) 0000 0000 Coefficient N1(15:8) for ADC Biquad C or coefficient FIR11(15:8) for ADC FIR filter or coefficient C18(15:8) of ADC miniDSP
37 (0x25) 0000 0000 Coefficient N1(7:0) for ADC Biquad C or coefficient FIR11(7:0) for ADC FIR filter or coefficient C18(7:0) of ADC miniDSP
38 (0x26) 0000 0000 Coefficient N2(15:8) for ADC Biquad C or coefficient FIR12(15:8) for ADC FIR filter or coefficient C19(15:8) of ADC miniDSP
39 (0x27) 0000 0000 Coefficient N2(7:0) for ADC Biquad C or coefficient FIR12(7:0) for ADC FIR filter or coefficient C19(7:0) of ADC miniDSP
40 (0x28) 0000 0000 Coefficient D1(15:8) for ADC Biquad C or coefficient FIR13(15:8) for ADC FIR filter or coefficient C20(15:8) of ADC miniDSP
41 (0x29) 0000 0000 Coefficient D1(7:0) for ADC Biquad C or coefficient FIR13(7:0) for ADC FIR filter or coefficient C20(7:0) of ADC miniDSP
42 (0x2A) 0000 0000 Coefficient D2(15:8) for ADC Biquad C or coefficient FIR14(15:8) for ADC FIR filter or coefficient C21(15:8) of ADC miniDSP
43 (0x2B) 0000 0000 Coefficient D2(7:0) for ADC Biquad C or coefficient FIR14(7:0) for ADC FIR filter or coefficient C21(7:0) of ADC miniDSP
44 (0x2C) 0111 1111 Coefficient N0(15:8) for ADC Biquad D or coefficient FIR15(15:8) for ADC FIR filter or coefficient C22(15:8) of ADC miniDSP
45 (0x2D) 1111 1111 Coefficient N0(7:0) for ADC Biquad D or coefficient FIR15(7:0) for ADC FIR filter or coefficient C22(7:0) of ADC miniDSP
46 (0x2E) 0000 0000 Coefficient N1(15:8) for ADC Biquad D or coefficient FIR16(15:8) for ADC FIR filter or coefficient C23(15:8) of ADC miniDSP
47 (0x2F) 0000 0000 Coefficient N1(7:0) for ADC Biquad D or coefficient FIR16(7:0) for ADC FIR filter or coefficient C23(7:0) of ADC miniDSP
48 (0x30) 0000 0000 Coefficient N2(15:8) for ADC Biquad D or coefficient FIR17(15:8) for ADC FIR filter or coefficient C24(15:8) of ADC miniDSP
49 (0x31) 0000 0000 Coefficient N2(7:0) for ADC Biquad D or coefficient FIR17(7:0) for ADC FIR filter or coefficient C24(7:0) of ADC miniDSP
50 (0x32) 0000 0000 Coefficient D1(15:8) for ADC Biquad D or coefficient FIR18(15:8) for ADC FIR filter or coefficient C25(15:8) of ADC miniDSP
51 (0x33) 0000 0000 Coefficient D1(7:0) for ADC Biquad D or coefficient FIR18(7:0) for ADC FIR filter or coefficient C25(7:0) of ADC miniDSP
52 (0x34) 0000 0000 Coefficient D2(15:8) for ADC Biquad D or coefficient FIR19(15:8) for ADC FIR filter or coefficient C26(15:8) of ADC miniDSP
53 (0x35) 0000 0000 Coefficient D2(7:0) for ADC Biquad D or coefficient FIR19(7:0) for ADC FIR filter or coefficient C26(7:0) of ADC miniDSP
54 (0x36) 0111 1111 Coefficient N0(15:8) for ADC Biquad E or coefficient FIR20(15:8) for ADC FIR filter or coefficient C27(15:8) of ADC miniDSP
55 (0x37) 1111 1111 Coefficient N0(7:0) for ADC Biquad E or coefficient FIR20(7:0) for ADC FIR filter or coefficient C27(7:0) of ADC miniDSP
56 (0x38) 0000 0000 Coefficient N1(15:8) for ADC Biquad E or coefficient FIR21(15:8) for ADC FIR filter or coefficient C28(15:8) of ADC miniDSP
57 (0x39) 0000 0000 Coefficient N1(7:0) for ADC Biquad E or coefficient FIR21(7:0) for ADC FIR filter or coefficient C28(7:0) of ADC miniDSP
58 (0x3A) 0000 0000 Coefficient N2(15:8) for ADC Biquad E or coefficient FIR22(15:8) for ADC FIR filter or coefficient C29(15:8) of ADC miniDSP
59 (0x3B) 0000 0000 Coefficient N2(7:0) for ADC Biquad E or coefficient FIR22(7:0) for ADC FIR filter or coefficient C29(7:0) of ADC miniDSP
60 (0x3C) 0000 0000 Coefficient D1(15:8) for ADC Biquad E or coefficient FIR23(15:8) for ADC FIR filter or coefficient C30(15:8) of ADC miniDSP
61 (0x3D) 0000 0000 Coefficient D1(7:0) for ADC Biquad E or coefficient FIR23(7:0) for ADC FIR filter or coefficient C30(7:0) of ADC miniDSP
62 (0x3E) 0000 0000 Coefficient D2(15:8) for ADC Biquad E or coefficient FIR24(15:8) for ADC FIR filter or coefficient C31(15:8) of ADC miniDSP
63 (0x3F) 0000 0000 Coefficient D2(7:0) for ADC Biquad E or coefficient FIR24(7:0) for ADC FIR filter or coefficient C31(7:0) of ADC miniDSP
64 (0x40) 0000 0000 Coefficient C32(15:8) of ADC miniDSP
65 (0x41) 0000 0000 Coefficient C32(7:0) of ADC miniDSP
66 (0x42) 0000 0000 Coefficient C33(15:8) of ADC miniDSP
67 (0x43) 0000 0000 Coefficient C33(7:0) of ADC miniDSP
68 (0x44) 0000 0000 Coefficient C34(15:8) of ADC miniDSP
69 (0x45) 0000 0000 Coefficient C34(7:0) of ADC miniDSP
70 (0x46) 0000 0000 Coefficient C35(15:8) of ADC miniDSP
71 (0x47) 0000 0000 Coefficient C35(7:0) of ADC miniDSP
72 (0x48) 0000 0000 Coefficient C36(15:8) of ADC miniDSP
73 (0x49) 0000 0000 Coefficient C36(7:0) of ADC miniDSP
74 (0x4A) 0000 0000 Coefficient C37(15:8) of ADC miniDSP
75 (0x4B) 0000 0000 Coefficient C37(7:0) of ADC miniDSP
76 (0x4C) 0000 0000 Coefficient C38(15:8) of ADC miniDSP
77 (0x4D) 0000 0000 Coefficient C38(7:0) of ADC miniDSP
78 (0x4E) 0000 0000 Coefficient C39(15:8) of ADC miniDSP
79 (0x4F) 0000 0000 Coefficient C39(7:0) of ADC miniDSP
80 (0x50) 0000 0000 Coefficient C40(15:8) of ADC miniDSP
81 (0x51) 0000 0000 Coefficient C40(7:0) of ADC miniDSP
82 (0x52) 0000 0000 Coefficient C41(15:8) of ADC miniDSP
83 (0x53) 0000 0000 Coefficient C41(7:0) of ADC miniDSP
84 (0x54) 0000 0000 Coefficient C42(15:8) of ADC miniDSP
85 (0x55) 0000 0000 Coefficient C42(7:0) of ADC miniDSP
86 (0x56) 0000 0000 Coefficient C43(15:8) of ADC miniDSP
87 (0x57) 0000 0000 Coefficient C43(7:0) of ADC miniDSP
88 (0x58) 0000 0000 Coefficient C44(15:8) of ADC miniDSP
89 (0x59) 0000 0000 Coefficient C44(7:0) of ADC miniDSP
90 (0x5A) 0000 0000 Coefficient C45(15:8) of ADC miniDSP
91 (0x5B) 0000 0000 Coefficient C45(7:0) of ADC miniDSP
92 (0x5C) 0000 0000 Coefficient C46(15:8) of ADC miniDSP
93 (0x5D) 0000 0000 Coefficient C46(7:0) of ADC miniDSP
94 (0x5E) 0000 0000 Coefficient C47(15:8) of ADC miniDSP
95 (0x5F) 0000 0000 Coefficient C47(7:0) of ADC miniDSP
96 (0x60) 0000 0000 Coefficient C48(15:8) of ADC miniDSP
97 (0x61) 0000 0000 Coefficient C48(7:0) of ADC miniDSP
98 (0x62) 0000 0000 Coefficient C49(15:8) of ADC miniDSP
99 (0x63) 0000 0000 Coefficient C49(7:0) of ADC miniDSP
100 (0x64) 0000 0000 Coefficient C50(15:8) of ADC miniDSP
101 (0x65) 0000 0000 Coefficient C50(7:0) of ADC miniDSP
102 (0x66) 0000 0000 Coefficient C51(15:8) of ADC miniDSP
103 (0x67) 0000 0000 Coefficient C51(7:0) of ADC miniDSP
104 (0x68) 0000 0000 Coefficient C52(15:8) of ADC miniDSP
105 (0x69) 0000 0000 Coefficient C52(7:0) of ADC miniDSP
106 (0x6A) 0000 0000 Coefficient C53(15:8) of ADC miniDSP
107 (0x6B) 0000 0000 Coefficient C53(7:0) of ADC miniDSP
108 (0x6C) 0000 0000 Coefficient C54(15:8) of ADC miniDSP
109 (0x6D) 0000 0000 Coefficient C54(7:0) of ADC miniDSP
110 (0x6E) 0000 0000 Coefficient C55(15:8) of ADC miniDSP
111 (0x6F) 0000 0000 Coefficient C55(7:0) of ADC miniDSP
112 (0x70) 0000 0000 Coefficient C56(15:8) of ADC miniDSP
113 (0x71) 0000 0000 Coefficient C56(7:0) of ADC miniDSP
114 (0x72) 0000 0000 Coefficient C57(15:8) of ADC miniDSP
115 (0x73) 0000 0000 Coefficient C57(7:0) of ADC miniDSP
116 (0x74) 0000 0000 Coefficient C58(15:8) of ADC miniDSP
117 (0x75) 0000 0000 Coefficient C58(7:0) of ADC miniDSP
118 (0x76) 0000 0000 Coefficient C59(15:8) of ADC miniDSP
119 (0x77) 0000 0000 Coefficient C59(7:0) of ADC miniDSP
120 (0x78) 0000 0000 Coefficient C60(15:8) of ADC miniDSP
121 (0x79) 0000 0000 Coefficient C60(7:0) of ADC miniDSP
122 (0x7A) 0000 0000 Coefficient C61(15:8) of ADC miniDSP
123 (0x7B) 0000 0000 Coefficient C61(7:0) of ADC miniDSP
124 (0x7C) 0000 0000 Coefficient C62(15:8) of ADC miniDSP
125 (0x7D) 0000 0000 Coefficient C62(7:0) of ADC miniDSP
126 (0x7E) 0000 0000 Coefficient C63(15:8) of ADC miniDSP
127 (0x7F) 0000 0000 Coefficient C63(7:0) of ADC miniDSP

Control Registers, Page 5: ADC Programmable Coefficients RAM (65:127)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-1 Page 5 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-5 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers must not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register must always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers must be written in this sequence. Table 7-162 is a list of the page-5 registers, excepting the previously described register 0.

Table 7-162 Page-5 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) XXXX XXXX Reserved. Do not write to this register.
 2 (0x02) 0000 0000 Coefficient C65(15:8) of ADC miniDSP
 3 (0x03) 0000 0000 Coefficient C65(7:0) of ADC miniDSP
 4 (0x04) 0000 0000 Coefficient C66(15:8) of ADC miniDSP
 5 (0x05) 0000 0000 Coefficient C66(7:0) of ADC miniDSP
 6 (0x06) 0000 0000 Coefficient C67(15:8) of ADC miniDSP
 7 (0x07) 0000 0000 Coefficient C67(7:0) of ADC miniDSP
 8 (0x08) 0000 0000 Coefficient C68(15:8) of ADC miniDSP
 9 (0x09) 0000 0000 Coefficient C68(7:0) of ADC miniDSP
10 (0x0A) 0000 0000 Coefficient C69(15:8) of ADC miniDSP
11 (0x0B) 0000 0000 Coefficient C69(7:0) of ADC miniDSP
12 (0x0C) 0000 0000 Coefficient C70(15:8) of ADC miniDSP
13 (0x0D) 0000 0000 Coefficient C70(7:0) of ADC miniDSP
14 (0x0E) 0000 0000 Coefficient C71(15:8) of ADC miniDSP
15 (0x0F) 0000 0000 Coefficient C71(7:0) of ADC miniDSP
16 (0x10) 0000 0000 Coefficient C72(15:8) of ADC miniDSP
17 (0x11) 0000 0000 Coefficient C72(7:0) of ADC miniDSP
18 (0x12) 0000 0000 Coefficient C73(15:8) of ADC miniDSP
19 (0x13) 0000 0000 Coefficient C73(7:0) of ADC miniDSP
20 (0x14) 0000 0000 Coefficient C74(15:8) of ADC miniDSP
21 (0x15) 0000 0000 Coefficient C74(7:0) of ADC miniDSP
22 (0x16) 0000 0000 Coefficient C75(15:8) of ADC miniDSP
23 (0x17) 0000 0000 Coefficient C75(7:0) of ADC miniDSP
24 (0x18) 0000 0000 Coefficient C76(15:8) of ADC miniDSP
25 (0x19) 0000 0000 Coefficient C76(7:0) of ADC miniDSP
26 (0x1A) 0000 0000 Coefficient C77(15:8) of ADC miniDSP
27 (0x1B) 0000 0000 Coefficient C77(7:0) of ADC miniDSP
28 (0x1C) 0000 0000 Coefficient C78(15:8) of ADC miniDSP
29 (0x1D) 0000 0000 Coefficient C78(7:0) of ADC miniDSP
30 (0x1E) 0000 0000 Coefficient C79(15:8) of ADC miniDSP
31 (0x1F) 0000 0000 Coefficient C79(7:0) of ADC miniDSP
32 (0x20) 0000 0000 Coefficient C80(15:8) of ADC miniDSP
33 (0x21) 0000 0000 Coefficient C80(7:0) of ADC miniDSP
34 (0x22) 0000 0000 Coefficient C81(15:8) of ADC miniDSP
35 (0x23) 0000 0000 Coefficient C81(7:0) of ADC miniDSP
36 (0x24) 0000 0000 Coefficient C82(15:8) of ADC miniDSP
37 (0x25) 0000 0000 Coefficient C82(7:0) of ADC miniDSP
38 (0x26) 0000 0000 Coefficient C83(15:8) of ADC miniDSP
39 (0x27) 0000 0000 Coefficient C83(7:0) of ADC miniDSP
40 (0x28) 0000 0000 Coefficient C84(15:8) of ADC miniDSP
41 (0x29) 0000 0000 Coefficient C84(7:0) of ADC miniDSP
42 (0x2A) 0000 0000 Coefficient C85(15:8) of ADC miniDSP
43 (0x2B) 0000 0000 Coefficient C85(7:0) of ADC miniDSP
44 (0x2C) 0000 0000 Coefficient C86(15:8) of ADC miniDSP
45 (0x2D) 0000 0000 Coefficient C86(7:0) of ADC miniDSP
46 (0x2E) 0000 0000 Coefficient C87(15:8) of ADC miniDSP
47 (0x2F) 0000 0000 Coefficient C87(7:0) of ADC miniDSP
48 (0x30) 0000 0000 Coefficient C88(15:8) of ADC miniDSP
49 (0x31) 0000 0000 Coefficient C88(7:0) of ADC miniDSP
50 (0x32) 0000 0000 Coefficient C89(15:8) of ADC miniDSP
51 (0x33) 0000 0000 Coefficient C89(7:0) of ADC miniDSP
52 (0x34) 0000 0000 Coefficient C90(15:8) of ADC miniDSP
53 (0x35) 0000 0000 Coefficient C90(7:0) of ADC miniDSP
54 (0x36) 0000 0000 Coefficient C91(15:8) of ADC miniDSP
55 (0x37) 0000 0000 Coefficient C91(7:0) of ADC miniDSP
56 (0x38) 0000 0000 Coefficient C92(15:8) of ADC miniDSP
57 (0x39) 0000 0000 Coefficient C92(7:0) of ADC miniDSP
58 (0x3A) 0000 0000 Coefficient C93(15:8) of ADC miniDSP
59 (0x3B) 0000 0000 Coefficient C93(7:0) of ADC miniDSP
60 (0x3C) 0000 0000 Coefficient C94(15:8) of ADC miniDSP
61 (0x3D) 0000 0000 Coefficient C94(7:0) of ADC miniDSP
62 (0x3E) 0000 0000 Coefficient C95(15:8) of ADC miniDSP
63 (0x3F) 0000 0000 Coefficient C95(7:0) of ADC miniDSP
64 (0x40) 0000 0000 Coefficient C96(15:8) of ADC miniDSP
65 (0x41) 0000 0000 Coefficient C96(7:0) of ADC miniDSP
66 (0x42) 0000 0000 Coefficient C97(15:8) of ADC miniDSP
67 (0x43) 0000 0000 Coefficient C97(7:0) of ADC miniDSP
68 (0x44) 0000 0000 Coefficient C98(15:8) of ADC miniDSP
69 (0x45) 0000 0000 Coefficient C98(7:0) of ADC miniDSP
70 (0x46) 0000 0000 Coefficient C99(15:8) of ADC miniDSP
71 (0x47) 0000 0000 Coefficient C99(7:0) of ADC miniDSP
72 (0x48) 0000 0000 Coefficient C100(15:8) of ADC miniDSP
73 (0x49) 0000 0000 Coefficient C100(7:0) of ADC miniDSP
74 (0x4A) 0000 0000 Coefficient C101(15:8) of ADC miniDSP
75 (0x4B) 0000 0000 Coefficient C101(7:0) of ADC miniDSP
76 (0x4C) 0000 0000 Coefficient C102(15:8) of ADC miniDSP
77 (0x4D) 0000 0000 Coefficient C102(7:0) of ADC miniDSP
78 (0x4E) 0000 0000 Coefficient C103(15:8) of ADC miniDSP
79 (0x4F) 0000 0000 Coefficient C103(7:0) of ADC miniDSP
80 (0x50) 0000 0000 Coefficient C104(15:8) of ADC miniDSP
81 (0x51) 0000 0000 Coefficient C104(7:0) of ADC miniDSP
82 (0x52) 0000 0000 Coefficient C105(15:8) of ADC miniDSP
83 (0x53) 0000 0000 Coefficient C105(7:0) of ADC miniDSP
84 (0x54) 0000 0000 Coefficient C106(15:8) of ADC miniDSP
85 (0x55) 0000 0000 Coefficient C106(7:0) of ADC miniDSP
86 (0x56) 0000 0000 Coefficient C107(15:8) of ADC miniDSP
87 (0x57) 0000 0000 Coefficient C107(7:0) of ADC miniDSP
88 (0x58) 0000 0000 Coefficient C108(15:8) of ADC miniDSP
89 (0x59) 0000 0000 Coefficient C108(7:0) of ADC miniDSP
90 (0x5A) 0000 0000 Coefficient C109(15:8) of ADC miniDSP
91 (0x5B) 0000 0000 Coefficient C109(7:0) of ADC miniDSP
92 (0x5C) 0000 0000 Coefficient C110(15:8) of ADC miniDSP
93 (0x5D) 0000 0000 Coefficient C110(7:0) of ADC miniDSP
94 (0x5E) 0000 0000 Coefficient C111(15:8) of ADC miniDSP
95 (0x5F) 0000 0000 Coefficient C111(7:0) of ADC miniDSP
96 (0x60) 0000 0000 Coefficient C112(15:8) of ADC miniDSP
97 (0x61) 0000 0000 Coefficient C112(7:0) of ADC miniDSP
98 (0x62) 0000 0000 Coefficient C113(15:8) of ADC miniDSP
99 (0x63) 0000 0000 Coefficient C113(7:0) of ADC miniDSP
100 (0x64) 0000 0000 Coefficient C114(15:8) of ADC miniDSP
101 (0x65) 0000 0000 Coefficient C114(7:0) of ADC miniDSP
102 (0x66) 0000 0000 Coefficient C115(15:8) of ADC miniDSP
103 (0x67) 0000 0000 Coefficient C115(7:0) of ADC miniDSP
104 (0x68) 0000 0000 Coefficient C117(15:8) of ADC miniDSP
105 (0x69) 0000 0000 Coefficient C117(7:0) of ADC miniDSP
106 (0x6A) 0000 0000 Coefficient C117(15:8) of ADC miniDSP
107 (0x6B) 0000 0000 Coefficient C117(7:0) of ADC miniDSP
108 (0x6C) 0000 0000 Coefficient C118(15:8) of ADC miniDSP
109 (0x6D) 0000 0000 Coefficient C118(7:0) of ADC miniDSP
110 (0x6E) 0000 0000 Coefficient C119(15:8) of ADC miniDSP
111 (0x6F) 0000 0000 Coefficient C119(7:0) of ADC miniDSP
112 (0x70) 0000 0000 Coefficient C120(15:8) of ADC miniDSP
113 (0x71) 0000 0000 Coefficient C120(7:0) of ADC miniDSP
114 (0x72) 0000 0000 Coefficient C121(15:8) of ADC miniDSP
115 (0x73) 0000 0000 Coefficient C121(7:0) of ADC miniDSP
116 (0x74) 0000 0000 Coefficient C122(15:8) of ADC miniDSP
117 (0x75) 0000 0000 Coefficient C122(7:0) of ADC miniDSP
118 (0x76) 0000 0000 Coefficient C123(15:8) of ADC miniDSP
119 (0x77) 0000 0000 Coefficient C123(7:0) of ADC miniDSP
120 (0x78) 0000 0000 Coefficient C124(15:8) of ADC miniDSP
121 (0x79) 0000 0000 Coefficient C124(7:0) of ADC miniDSP
122 (0x7A) 0000 0000 Coefficient C125(15:8) of ADC miniDSP
123 (0x7B) 0000 0000 Coefficient C125(7:0) of ADC miniDSP
124 (0x7C) 0000 0000 Coefficient C126(15:8) of ADC miniDSP
125 (0x7D) 0000 0000 Coefficient C126(7:0) of ADC miniDSP
126 (0x7E) 0000 0000 Coefficient C127(15:8) of ADC miniDSP
127 (0x7F) 0000 0000 Coefficient C127(7:0) of ADC miniDSP

Control Registers, Page 8: DAC Programmable Coefficients RAM Buffer A (1:63)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-163 Page 8 / Register 0: Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-8 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers must not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register must always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers must be written in this sequence. is a list of the page-8 registers, excepting the previously described register 0.

Table 7-164 Page 8 / Register 1(0x01): DAC Coefficient RAM Control

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W 0000 Reserved. Write only the reset value.
D3 R 0 DAC miniDSP generated flag for toggling MSB of coefficient RAM address (only used in non-adaptive mode)
D2 R/W 0 DAC Adaptive Filtering Control
0: Adaptive filtering disabled in DAC
1: Adaptive filtering enabled in DAC
D1 R 0 DAC Adaptive Filter Buffer Control Flag
0: In adaptive filter mode, DAC accesses DAC coefficient Buffer A and the external control interface accesses DAC coefficient Buffer B
1: In adaptive filter mode, DAC accesses DAC coefficient Buffer B and the external control interface accesses DAC coefficient Buffer A
D0 R/W 0 DAC Adaptive Filter Buffer Switch Control
0: DAC coefficient buffers are not switched at the next frame boundary.
1: DAC coefficient buffers are switched at the next frame boundary, if adaptive filtering mode is enabled. This bit self-clears on switching.

Table 7-165 Page-8 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 2 (0x02) 0111 1111 Coefficient N0(15:8) for DAC-programmable biquad A or coefficient C1(15:8) of DAC miniDSP (DAC buffer A)
 3 (0x03) 1111 1111 Coefficient N0(7:0) for DAC-programmable biquad A or coefficient C1(7:0) of DAC miniDSP (DAC buffer A)
 4 (0x04) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad A or coefficient C2(15:8) of DAC miniDSP (DAC buffer A)
 5 (0x05) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad A or coefficient C2(7:0) of DAC miniDSP (DAC buffer A)
 6 (0x06) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad A or coefficient C3(15:8) of DAC miniDSP (DAC buffer A)
 7 (0x07) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad A or coefficient C3(7:0) of DAC miniDSP (DAC buffer A)
 8 (0x08) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad A or coefficient C4(15:8) of DAC miniDSP (DAC buffer A)
 9 (0x09) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad A or coefficient C4(7:0) of DAC miniDSP (DAC buffer A)
10 (0x0A) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad A or coefficient C5(15:8) of DAC miniDSP (DAC buffer A)
11 (0x0B) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad A or coefficient C5(7:0) of DAC miniDSP (DAC buffer A)
12 (0x0C) 0111 1111 Coefficient N0(15:8) for DAC-programmable biquad B or coefficient C6(15:8) of DAC miniDSP (DAC buffer A)
13 (0x0D) 1111 1111 Coefficient N0(7:0) for DAC-programmable biquad B or coefficient C6(7:0) of DAC miniDSP (DAC buffer A)
14 (0x0E) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad B or coefficient C7(15:8) of DAC miniDSP (DAC buffer A)
15 (0x0F) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad B or coefficient C7(7:0) of DAC miniDSP (DAC buffer A)
16 (0x10) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad B or coefficient C8(15:8) of DAC miniDSP (DAC buffer A)
17 (0x11) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad B or coefficient C8(7:0) of DAC miniDSP (DAC buffer A)
18 (0x12) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad B or coefficient C9(15:8) of DAC miniDSP (DAC buffer A)
19 (0x13) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad B or coefficient C9(7:0) of DAC miniDSP (DAC buffer A)
20 (0x14) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad B or coefficient C10(15:8) of DAC miniDSP (DAC buffer A)
21 (0x15) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad B or coefficient C10(7:0) of DAC miniDSP (DAC buffer A)
22 (0x16) 0111 1111 Coefficient N0(15:8) for DAC-programmable biquad C or coefficient C11(15:8) of DAC miniDSP (DAC buffer A)
23 (0x17) 1111 1111 Coefficient N0(7:0) for DAC-programmable biquad C or coefficient C11(7:0) of DAC miniDSP (DAC buffer A)
24 (0x18) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad C or coefficient C12(15:8) of DAC miniDSP (DAC buffer A)
25 (0x19) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad C or coefficient C12(7:0) of DAC miniDSP (DAC buffer A)
26 (0x1A) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad C or coefficient C13(15:8) of DAC miniDSP (DAC buffer A)
27 (0x1B) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad C or coefficient C13(7:0) of DAC miniDSP (DAC buffer A)
28 (0x1C) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad C or coefficient C14(15:8) of DAC miniDSP (DAC buffer A)
29 (0x1D) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad C or coefficient C14(7:0) of DAC miniDSP (DAC buffer A)
30 (0x1E) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad C or coefficient C15(15:8) of DAC miniDSP (DAC buffer A)
31 (0x1F) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad C or coefficient C15(7:0) of DAC miniDSP (DAC buffer A)
32 (0x20) 0111 1111 Coefficient N0(15:8) for DAC-programmable biquad D or coefficient C16(15:8) of DAC miniDSP (DAC buffer A)
33 (0x21) 1111 1111 Coefficient N0(7:0) for DAC-programmable biquad D or coefficient C16(7:0) of DAC miniDSP (DAC buffer A)
34 (0x22) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad D or coefficient C17(15:8) of DAC miniDSP (DAC buffer A)
35 (0x23) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad D or coefficient C17(7:0) of DAC miniDSP (DAC buffer A)
36 (0x24) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad D or coefficient C18(15:8) of DAC miniDSP (DAC buffer A)
37 (0x25) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad D or coefficient C18(7:0) of DAC miniDSP (DAC buffer A)
38 (0x26) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad D or coefficient C19(15:8) of DAC miniDSP (DAC buffer A)
39 (0x27) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad D or coefficient C19(7:0) of DAC miniDSP (DAC buffer A)
40 (0x28) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad D or coefficient C20(15:8) of DAC miniDSP (DAC buffer A)
41 (0x29) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad D or coefficient C20(7:0) of DAC miniDSP (DAC buffer A)
42 (0x2A) 0111 1111 Coefficient N0(15:8) for DAC-programmable biquad E or coefficient C21(15:8) of DAC miniDSP (DAC buffer A)
43 (0x2B) 1111 1111 Coefficient N0(7:0) for DAC-programmable biquad E or coefficient C21(7:0) of DAC miniDSP (DAC buffer A)
44 (0x2C) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad E or coefficient C22(15:8) of DAC miniDSP (DAC buffer A)
45 (0x2D) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad E or coefficient C22(7:0) of DAC miniDSP (DAC buffer A)
46 (0x2E) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad E or coefficient C23(15:8) of DAC miniDSP (DAC buffer A)
47 (0x2F) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad E or coefficient C23(7:0) of DAC miniDSP (DAC buffer A)
48 (0x30) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad E or coefficient C24(15:8) of DAC miniDSP (DAC buffer A)
49 (0x31) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad E or coefficient C24(7:0) of DAC miniDSP (DAC buffer A)
50 (0x32) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad E or coefficient C25(15:8) of DAC miniDSP (DAC buffer A)
51 (0x33) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad E or coefficient C25(7:0) of DAC miniDSP (DAC buffer A)
52 (0x34) 0111 1111 Coefficient N0(15:8) for DAC-programmable biquad F or coefficient C26(15:8) of DAC miniDSP (DAC buffer A)
53 (0x35) 1111 1111 Coefficient N0(7:0) for DAC-programmable biquad F or coefficient C26(7:0) of DAC miniDSP (DAC buffer A)
54 (0x36) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad F or coefficient C27(15:8) of DAC miniDSP (DAC buffer A)
55 (0x37) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad F or coefficient C27(7:0) of DAC miniDSP (DAC buffer A)
56 (0x38) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad F or coefficient C28(15:8) of DAC miniDSP (DAC buffer A)
57 (0x39) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad F or coefficient C28(7:0) of DAC miniDSP (DAC buffer A)
58 (0x3A) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad F or coefficient C29(15:8) of DAC miniDSP (DAC buffer A)
59 (0x3B) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad F or coefficient C29(7:0) of DAC miniDSP (DAC buffer A)
60 (0x3C) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad F or coefficient C30(15:8) of DAC miniDSP (DAC buffer A)
61 (0x3D) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad F or coefficient C30(7:0) of DAC miniDSP (DAC buffer A)
62 (0x3E) 0000 0000 Coefficient C31(15:8) of DAC miniDSP (DAC buffer A)
63 (0x3F) 0000 0000 Coefficient C31(7:0) of DAC miniDSP (DAC buffer A)
64 (0x40) 0000 0000 Coefficient C32(15:8) of DAC miniDSP (DAC buffer A)
65 (0x41) 0000 0000 Coefficient C32(7:0) of DAC miniDSP (DAC buffer A)
66 (0x42) 0111 1111 Coefficient C33(15:8) of DAC miniDSP (DAC buffer A)
67 (0x43) 1111 1111 Coefficient C33(7:0) of DAC miniDSP (DAC buffer A)
68 (0x44) 0000 0000 Coefficient C34(15:8) of DAC miniDSP (DAC buffer A)
69 (0x45) 0000 0000 Coefficient C34(7:0) of DAC miniDSP (DAC buffer A)
70 (0x46) 0000 0000 Coefficient C35(15:8) of DAC miniDSP (DAC buffer A)
71 (0x47) 0000 0000 Coefficient C35(7:0) of DAC miniDSP (DAC buffer A)
72 (0x48) 0000 0000 Coefficient C36(15:8) of DAC miniDSP (DAC buffer A)
73 (0x49) 0000 0000 Coefficient C36(7:0) of DAC miniDSP (DAC buffer A)
74 (0x4A) 0000 0000 Coefficient C37(15:8) of DAC miniDSP (DAC buffer A)
75 (0x4B) 0000 0000 Coefficient C37(7:0) of DAC miniDSP (DAC buffer A)
76 (0x4C) 0111 1111 Coefficient C38(15:8) of DAC miniDSP (DAC buffer A)
77 (0x4D) 1111 1111 Coefficient C38(7:0) of DAC miniDSP (DAC buffer A)
78 (0x4E) 0000 0000 Coefficient C39(15:8) of DAC miniDSP (DAC buffer A)
79 (0x4F) 0000 0000 Coefficient C39(7:0) of DAC miniDSP (DAC buffer A)
80 (0x50) 0000 0000 Coefficient C40(15:8) of DAC miniDSP (DAC buffer A)
81 (0x51) 0000 0000 Coefficient C40(7:0) of DAC miniDSP (DAC buffer A)
82 (0x52) 0000 0000 Coefficient C41(15:8) of DAC miniDSP (DAC buffer A)
83 (0x53) 0000 0000 Coefficient C41(7:0) of DAC miniDSP (DAC buffer A)
84 (0x54) 0000 0000 Coefficient C42(15:8) of DAC miniDSP (DAC buffer A)
85 (0x55) 0000 0000 Coefficient C42(7:0) of DAC miniDSP (DAC buffer A)
86 (0x56) 0111 1111 Coefficient C43(15:8) of DAC miniDSP (DAC buffer A)
87 (0x57) 1111 1111 Coefficient C43(7:0) of DAC miniDSP (DAC buffer A)
88 (0x58) 0000 0000 Coefficient C44(15:8) of DAC miniDSP (DAC buffer A)
89 (0x59) 0000 0000 Coefficient C44(7:0) of DAC miniDSP (DAC buffer A)
90 (0x5A) 0000 0000 Coefficient C45(15:8) of DAC miniDSP (DAC buffer A)
91 (0x5B) 0000 0000 Coefficient C45(7:0) of DAC miniDSP (DAC buffer A)
92 (0x5C) 0000 0000 Coefficient C461(15:8) of DAC miniDSP (DAC buffer A)
93 (0x5D) 0000 0000 Coefficient C46(7:0) of DAC miniDSP (DAC buffer A)
94 (0x5E) 0000 0000 Coefficient C47(15:8) of DAC miniDSP (DAC buffer A)
95 (0x5F) 0000 0000 Coefficient C47(7:0) of DAC miniDSP (DAC buffer A)
96 (0x60) 0111 1111 Coefficient C48(15:8) of DAC miniDSP (DAC buffer A)
97 (0x61) 1111 1111 Coefficient C48(7:0) of DAC miniDSP (DAC buffer A)
98 (0x62) 0000 0000 Coefficient C49(15:8) of DAC miniDSP (DAC buffer A)
99 (0x63) 0000 0000 Coefficient C49(7:0) of DAC miniDSP (DAC buffer A)
100 (0x64) 0000 0000 Coefficient C50(15:8) of DAC miniDSP (DAC buffer A)
101 (0x65) 0000 0000 Coefficient C50(7:0) of DAC miniDSP (DAC buffer A)
102 (0x66) 0000 0000 Coefficient C51(15:8) of DAC miniDSP (DAC buffer A)
103 (0x67) 0000 0000 CoefficientC51(7:0) of DAC miniDSP (DAC buffer A)
104 (0x68) 0000 0000 Coefficient C52(15:8) of DAC miniDSP (DAC buffer A)
105 (0x69) 0000 0000 Coefficient C52(7:0) of DAC miniDSP (DAC buffer A)
106 (0x6A) 0111 1111 Coefficient C53(15:8) of DAC miniDSP (DAC buffer A)
107 (0x6B) 1111 1111 Coefficient C53(7:0) of DAC miniDSP (DAC buffer A)
108 (0x6C) 0000 0000 Coefficient C54(15:8) of DAC miniDSP (DAC buffer A)
109 (0x6D) 0000 0000 Coefficient C54(7:0) of DAC miniDSP (DAC buffer A)
110 (0x6E) 0000 0000 Coefficient C55(15:8) of DAC miniDSP (DAC buffer A)
111 (0x6F) 0000 0000 Coefficient C55(7:0) of DAC miniDSP (DAC buffer A)
112 (0x70) 0000 0000 Coefficient C56(15:8) of DAC miniDSP (DAC buffer A)
113 (0x71) 0000 0000 Coefficient C56(7:0) of DAC miniDSP (DAC buffer A)
114 (0x72) 0000 0000 Coefficient C57(15:8) of DAC miniDSP (DAC buffer A)
115 (0x73) 0000 0000 Coefficient C57(7:0) of DAC miniDSP (DAC buffer A)
116 (0x74) 0111 1111 Coefficient C58(15:8) of DAC miniDSP (DAC buffer A)
117 (0x75) 1111 1111 Coefficient C58(7:0) of DAC miniDSP (DAC buffer A)
118 (0x76) 0000 0000 Coefficient C59(15:8) of DAC miniDSP (DAC buffer A)
119 (0x77) 0000 0000 Coefficient C59(7:0) of DAC miniDSP (DAC buffer A)
120 (0x78) 0000 0000 Coefficient C60(15:8) of DAC miniDSP (DAC buffer A)
121 (0x79) 0000 0000 Coefficient C60(7:0) of DAC miniDSP (DAC buffer A)
122 (0x7A) 0000 0000 Coefficient C61(15:8) of DAC miniDSP (DAC buffer A)
123 (0x7B) 0000 0000 Coefficient C61(7:0) of DAC miniDSP (DAC buffer A)
124 (0x7C) 0000 0000 Coefficient C62(15:8) of DAC miniDSP (DAC buffer A)
125 (0x7D) 0000 0000 Coefficient C62(7:0) of DAC miniDSP (DAC buffer A)
126 (0x7E) 0000 0000 Coefficient C63(15:8) of DAC miniDSP (DAC buffer A)
127 (0x7F) 0000 0000 Coefficient C63(7:0) of DAC miniDSP (DAC buffer A)

Control Registers, Page 9: DAC Programmable Coefficients RAM Buffer A (65:127)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-166 Page 9 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-9 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers must not be written to.

The filter-coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register must always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers must be written in this sequence. is a list of the page-9 registers, excepting the previously described register 0.

Table 7-167 Page-9 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) XXXX XXXX Reserved. Do not write to this register.
 2 (0x02) 0111 1111 Coefficient N0(15:8) for left DAC-programmable first-order IIR or coefficient C65(15:8) of DAC miniDSP (DAC buffer A)
 3 (0x03) 1111 1111 Coefficient N0(7:0) for left DAC-programmable first-order IIR or coefficient C65(7:0) of DAC miniDSP (DAC buffer A)
 4 (0x04) 0000 0000 Coefficient N1(15:8) for left DAC-programmable first-order IIR or coefficient C66(15:8) of DAC miniDSP (DAC buffer A)
 5 (0x05) 0000 0000 Coefficient N1(7:0) for left DAC-programmable first-order IIR or coefficient C66(7:0) of DAC miniDSP (DAC buffer A)
 6 (0x06) 0000 0000 Coefficient D1(15:8) for left DAC-programmable first-order IIR or coefficient C67(15:8) of DAC miniDSP (DAC buffer A)
 7 (0x07) 0000 0000 Coefficient D1(7:0) for left DAC-programmable first-order IIR or coefficient C67(7:0) of DAC miniDSP (DAC buffer A)
 8 (0x08) 0111 1111 Coefficient N0(15:8) for right DAC-programmable first-order IIR or coefficient C68(15:8) of DAC miniDSP (DAC buffer A)
 9 (0x09) 1111 1111 Coefficient N0(7:0) for right DAC-programmable first-order IIR or coefficient C68(7:0) of DAC miniDSP (DAC buffer A)
10 (0x0A) 0000 0000 Coefficient N1(15:8) for right DAC-programmable first-order IIR or coefficient C69(15:8) of DAC miniDSP (DAC buffer A)
11 (0x0B) 0000 0000 Coefficient N1(7:0) for right DAC-programmable first-order IIR or coefficient C69(7:0) of DAC miniDSP (DAC buffer A)
12 (0x0C) 0000 0000 Coefficient D1(15:8) for right DAC-programmable first-order IIR or coefficient C70(15:8) of DAC miniDSP (DAC buffer A)
13 (0x0D) 0000 0000 Coefficient D1(7:0) for right DAC-programmable first-order IIR or coefficient C70(7:0) of DAC miniDSP (DAC buffer A)
14 (0x0E) 0111 1111 Coefficient N0(15:8) for DRC first-order high-pass filter or coefficient C71(15:8) of DAC miniDSP (DAC buffer A)
15 (0x0F) 1111 0111 Coefficient N0(7:0) for DRC first-order high-pass filter or coefficient C71(7:0) of DAC miniDSP (DAC buffer A)
16 (0x10) 1000 0000 Coefficient N1(15:8) for DRC first-order high-pass filter or coefficient C72(15:8) of DAC miniDSP (DAC buffer A)
17 (0x11) 0000 1001 Coefficient N1(7:0) for DRC first-order high-pass filter or coefficient C72(7:0) of DAC miniDSP (DAC buffer A)
18 (0x12) 0111 1111 Coefficient D1(15:8) for DRC first-order high-pass filter or coefficient C73(15:8) of DAC miniDSP (DAC buffer A)
19 (0x13) 1110 1111 Coefficient D1(7:0) for DRC first-order high-pass filter or coefficient C73(7:0) of DAC miniDSP (DAC buffer A)
20 (0x14) 0000 0000 Coefficient N0(15:8) for DRC first-order low-pass filter or coefficient C74(15:8) of DAC miniDSP (DAC buffer A)
21 (0x15) 0001 0001 Coefficient N0(7:0) for DRC first-order low-pass filter or coefficient C74(7:0) of DAC miniDSP (DAC buffer A)
22 (0x16) 0000 0000 Coefficient N1(15:8) for DRC first-order low-pass filter or coefficient C75(15:8) of DAC miniDSP (DAC buffer A)
23 (0x17) 0001 0001 Coefficient N1(7:0) for DRC first-order low-pass filter or coefficient C75(7:0) of DAC miniDSP (DAC buffer A)
24 (0x18) 0111 1111 Coefficient D1(15:8) for DRC first-order low-pass filter or coefficient C76(15:8) of DAC miniDSP (DAC buffer A)
25 (0x19) 1101 1110 Coefficient D1(7:0) for DRC first-order low-pass filter or coefficient C76(7:0) of DAC miniDSP (DAC buffer A)
26 (0x1A) 0000 0000 Coefficient C77(15:8) of DAC miniDSP (DAC buffer A)
27 (0x1B) 0000 0000 Coefficient C77(7:0) of DAC miniDSP (DAC buffer A)
28 (0x1C) 0000 0000 Coefficient C78(15:8) of DAC miniDSP (DAC buffer A)
29 (0x1D) 0000 0000 Coefficient C78(7:0) of DAC miniDSP (DAC buffer A)
30 (0x1E) 0000 0000 Coefficient C79(15:8) of DAC miniDSP (DAC buffer A)
31 (0x1F) 0000 0000 Coefficient C79(7:0) of DAC miniDSP (DAC buffer A)
32 (0x20) 0000 0000 Coefficient C80(15:8) of DAC miniDSP (DAC buffer A)
33 (0x21) 0000 0000 Coefficient C80(7:0) of DAC miniDSP (DAC buffer A)
34 (0x22) 0000 0000 Coefficient C81(15:8) of DAC miniDSP (DAC buffer A)
35 (0x23) 0000 0000 Coefficient C81(7:0) of DAC miniDSP (DAC buffer A)
36 (0x24) 0000 0000 Coefficient C82(15:8) of DAC miniDSP (DAC buffer A)
37 (0x25) 0000 0000 Coefficient C82(7:0) of DAC miniDSP (DAC buffer A)
38 (0x26) 0000 0000 Coefficient C83(15:8) of DAC miniDSP (DAC buffer A)
39 (0x27) 0000 0000 Coefficient C83(7:0) of DAC miniDSP (DAC buffer A)
40 (0x28) 0000 0000 Coefficient C84(15:8) of DAC miniDSP (DAC buffer A)
41 (0x29) 0000 0000 Coefficient C84(7:0) of DAC miniDSP (DAC buffer A)
42 (0x2A) 0000 0000 Coefficient C85(15:8) of DAC miniDSP (DAC buffer A)
43 (0x2B) 0000 0000 Coefficient C85(7:0) of DAC miniDSP (DAC buffer A)
44 (0x2C) 0000 0000 Coefficient C86(15:8) of DAC miniDSP (DAC buffer A)
45 (0x2D) 0000 0000 Coefficient C86(7:0) of DAC miniDSP (DAC buffer A)
46 (0x2E) 0000 0000 Coefficient C87(15:8) of DAC miniDSP (DAC buffer A)
47 (0x2F) 0000 0000 Coefficient C87(7:0) of DAC miniDSP (DAC buffer A)
48 (0x30) 0000 0000 Coefficient C88(15:8) of DAC miniDSP (DAC buffer A)
49 (0x31) 0000 0000 Coefficient C88(7:0) of DAC miniDSP (DAC buffer A)
50 (0x32) 0000 0000 Coefficient C89(15:8) of DAC miniDSP (DAC buffer A)
51 (0x33) 0000 0000 Coefficient C89(7:0) of DAC miniDSP (DAC buffer A)
52 (0x34) 0000 0000 Coefficient C90(15:8) of DAC miniDSP (DAC buffer A)
53 (0x35) 0000 0000 Coefficient C90(7:0) of DAC miniDSP (DAC buffer A)
54 (0x36) 0000 0000 Coefficient C91(15:8) of DAC miniDSP (DAC buffer A)
55 (0x37) 0000 0000 Coefficient C91(7:0) of DAC miniDSP (DAC buffer A)
56 (0x38) 0000 0000 Coefficient C92(15:8) of DAC miniDSP (DAC buffer A)
57 (0x39) 0000 0000 Coefficient C92(7:0) of DAC miniDSP (DAC buffer A)
58 (0x3A) 0000 0000 Coefficient C93(15:8) of DAC miniDSP (DAC buffer A)
59 (0x3B) 0000 0000 Coefficient C93(7:0) of DAC miniDSP (DAC buffer A)
60 (0x3C) 0000 0000 Coefficient C94(15:8) of DAC miniDSP (DAC buffer A)
61 (0x3D) 0000 0000 Coefficient C94(7:0) of DAC miniDSP (DAC buffer A)
62 (0x3E) 0000 0000 Coefficient C95(15:8) of DAC miniDSP (DAC buffer A)
63 (0x3F) 0000 0000 Coefficient C95(7:0) of DAC miniDSP (DAC buffer A)
64 (0x40) 0000 0000 Coefficient C96(15:8) of DAC miniDSP (DAC buffer A)
65 (0x41) 0000 0000 Coefficient C96(7:0) of DAC miniDSP (DAC buffer A)
66 (0x42) 0000 0000 Coefficient C97(15:8) of DAC miniDSP (DAC buffer A)
67 (0x43) 0000 0000 Coefficient C97(7:0) of DAC miniDSP (DAC buffer A)
68 (0x44) 0000 0000 Coefficient C98(15:8) of DAC miniDSP (DAC buffer A)
69 (0x45) 0000 0000 Coefficient C98(7:0) of DAC miniDSP (DAC buffer A)
70 (0x46) 0000 0000 Coefficient C99(15:8) of DAC miniDSP (DAC buffer A)
71 (0x47) 0000 0000 Coefficient C99(7:0) of DAC miniDSP (DAC buffer A)
72 (0x48) 0000 0000 Coefficient C100(15:8) of DAC miniDSP (DAC buffer A)
73 (0x49) 0000 0000 Coefficient C100(7:0) of DAC miniDSP (DAC buffer A)
74 (0x4A) 0000 0000 Coefficient C101(15:8) of DAC miniDSP (DAC buffer A)
75 (0x4B) 0000 0000 Coefficient C101(7:0) of DAC miniDSP (DAC buffer A)
76 (0x4C) 0000 0000 Coefficient C102(15:8) of DAC miniDSP (DAC buffer A)
77 (0x4D) 0000 0000 Coefficient C102(7:0) of DAC miniDSP (DAC buffer A)
78 (0x4E) 0000 0000 Coefficient C103(15:8) of DAC miniDSP (DAC buffer A)
79 (0x4F) 0000 0000 Coefficient C103(7:0) of DAC miniDSP (DAC buffer A)
80 (0x50) 0000 0000 Coefficient C104(15:8) of DAC miniDSP (DAC buffer A)
81 (0x51) 0000 0000 Coefficient C104(7:0) of DAC miniDSP (DAC buffer A)
82 (0x52) 0000 0000 Coefficient C105(15:8) of DAC miniDSP (DAC buffer A)
83 (0x53) 0000 0000 Coefficient C105(7:0) of DAC miniDSP (DAC buffer A)
84 (0x54) 0000 0000 Coefficient C106(15:8) of DAC miniDSP (DAC buffer A)
85 (0x55) 0000 0000 Coefficient C106(7:0) of DAC miniDSP (DAC buffer A)
86 (0x56) 0000 0000 Coefficient C107(15:8) of DAC miniDSP (DAC buffer A)
87 (0x57) 0000 0000 Coefficient C107(15:8) of DAC miniDSP (DAC buffer A)
88 (0x58) 0000 0000 Coefficient C108(7:0) of DAC miniDSP (DAC buffer A)
89 (0x59) 0000 0000 Coefficient C108(7:0) of DAC miniDSP (DAC buffer A)
90 (0x5A) 0000 0000 Coefficient C109(15:8) of DAC miniDSP (DAC buffer A)
91 (0x5B) 0000 0000 Coefficient C109(7:0) of DAC miniDSP (DAC buffer A)
92 (0x5C) 0000 0000 Coefficient C110(15:8) of DAC miniDSP (DAC buffer A)
93 (0x5D) 0000 0000 Coefficient C110(7:0) of DAC miniDSP (DAC buffer A)
94 (0x5E) 0000 0000 Coefficient C111(15:8) of DAC miniDSP (DAC buffer A)
95 (0x5F) 0000 0000 Coefficient C111(7:0) of DAC miniDSP (DAC buffer A)
96 (0x60) 0000 0000 Coefficient C112(15:8) of DAC miniDSP (DAC buffer A)
97 (0x61) 0000 0000 Coefficient C112(7:0) of DAC miniDSP (DAC buffer A)
98 (0x62) 0000 0000 Coefficient C113(15:8) of DAC miniDSP (DAC buffer A)
99 (0x63) 0000 0000 Coefficient C113(7:0) of DAC miniDSP (DAC buffer A)
100 (0x64) 0000 0000 Coefficient C114(15:8) of DAC miniDSP (DAC buffer A)
101 (0x65) 0000 0000 Coefficient C114(7:0) of DAC miniDSP (DAC buffer A)
102 (0x66) 0000 0000 Coefficient C11515:8) of DAC miniDSP (DAC buffer A)
103 (0x67) 0000 0000 Coefficient C115(7:0) of DAC miniDSP (DAC buffer A)
104 (0x68) 0000 0000 Coefficient C116(15:8) of DAC miniDSP (DAC buffer A)
105 (0x69) 0000 0000 Coefficient C116(7:0) of DAC miniDSP (DAC buffer A)
106 (0x6A) 0000 0000 Coefficient C117(15:8) of DAC miniDSP (DAC buffer A)
107 (0x6B) 0000 0000 Coefficient C117(7:0) of DAC miniDSP (DAC buffer A)
108 (0x6C) 0000 0000 Coefficient C118(15:8) of DAC miniDSP (DAC buffer A)
109 (0x6D) 0000 0000 Coefficient C118(7:0) of DAC miniDSP (DAC buffer A)
110 (0x6E) 0000 0000 Coefficient C119(15:8) of DAC miniDSP (DAC buffer A)
111 (0x6F) 0000 0000 Coefficient C119(7:0) of DAC miniDSP (DAC buffer A)
112 (0x70) 0000 0000 Coefficient C120(15:8) of DAC miniDSP (DAC buffer A)
113 (0x71) 0000 0000 Coefficient C120(7:0) of DAC miniDSP (DAC buffer A)
114 (0x72) 0000 0000 Coefficient C121(15:8) of DAC miniDSP (DAC buffer A)
115 (0x73) 0000 0000 Coefficient C121(7:0) of DAC miniDSP (DAC buffer A)
116 (0x74) 0000 0000 Coefficient C122(15:8) of DAC miniDSP (DAC buffer A)
117 (0x75) 0000 0000 Coefficient C122(7:0) of DAC miniDSP (DAC buffer A)
118 (0x76) 0000 0000 Coefficient C123(15:8) of DAC miniDSP (DAC buffer A)
119 (0x77) 0000 0000 Coefficient C123(7:0) of DAC miniDSP (DAC buffer A)
120 (0x78) 0000 0000 Coefficient C124(15:8) of DAC miniDSP (DAC buffer A)
121 (0x79) 0000 0000 Coefficient C124(7:0) of DAC miniDSP (DAC buffer A)
122 (0x7A) 0000 0000 Coefficient C125(15:8) of DAC miniDSP (DAC buffer A)
123 (0x7B) 0000 0000 Coefficient C125(7:0) of DAC miniDSP (DAC buffer A)
124 (0x7C) 0000 0000 Coefficient C126(15:8) of DAC miniDSP (DAC buffer A)
125 (0x7D) 0000 0000 Coefficient C126(7:0) of DAC miniDSP (DAC buffer A)
126 (0x7E) 0000 0000 Coefficient C127(15:8) of DAC miniDSP (DAC buffer A)
127 (0x7F) 0000 0000 Coefficient C127(7:0) of DAC miniDSP (DAC buffer A)

Control Registers, Page 10: DAC Programmable Coefficients RAM Buffer A (129:191)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-2 Page 10 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-10 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers should not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register should always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers should be written in this sequence. Table 7-168 is a list of the page-10 registers, excepting the previously described register 0.

Table 7-168 Page-10 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) XXXX XXXX Reserved. Do not write to this register.
 2 (0x02) 0000 0000 Coefficient C129(15:8) of DAC miniDSP (DAC buffer A)
 3 (0x03) 0000 0000 Coefficient C129(7:0) of DAC miniDSP (DAC buffer A)
 4 (0x04) 0000 0000 Coefficient C130(15:8) of DAC miniDSP (DAC buffer A)
 5 (0x05) 0000 0000 Coefficient C130(7:0) of DAC miniDSP (DAC buffer A)
 6 (0x06) 0000 0000 Coefficient C131(15:8) of DAC miniDSP (DAC buffer A)
 7 (0x07) 0000 0000 Coefficient C131(7:0) of DAC miniDSP (DAC buffer A)
 8 (0x08) 0000 0000 Coefficient C132(15:8) of DAC miniDSP (DAC buffer A)
 9 (0x09) 0000 0000 Coefficient C132(7:0) of DAC miniDSP (DAC buffer A)
10 (0x0A) 0000 0000 Coefficient C133(15:8) of DAC miniDSP (DAC buffer A)
11 (0x0B) 0000 0000 Coefficient C133(7:0) of DAC miniDSP (DAC buffer A)
12 (0x0C) 0000 0000 Coefficient C134(15:8) of DAC miniDSP (DAC buffer A)
13 (0x0D) 0000 0000 Coefficient C134(7:0) of DAC miniDSP (DAC buffer A)
14 (0x0E) 0000 0000 Coefficient C135(15:8) of DAC miniDSP (DAC buffer A)
15 (0x0F) 0000 0000 Coefficient C135(7:0) of DAC miniDSP (DAC buffer A)
16 (0x10) 0000 0000 Coefficient C136(15:8) of DAC miniDSP (DAC buffer A)
17 (0x11) 0000 0000 Coefficient C136(7:0) of DAC miniDSP (DAC buffer A)
18 (0x12) 0000 0000 Coefficient C137(15:8) of DAC miniDSP (DAC buffer A)
19 (0x13) 0000 0000 Coefficient C137(7:0) of DAC miniDSP (DAC buffer A)
20 (0x14) 0000 0000 Coefficient C138(15:8) of DAC miniDSP (DAC buffer A)
21 (0x15) 0000 0000 Coefficient C138(7:0) of DAC miniDSP (DAC buffer A)
22 (0x16) 0000 0000 Coefficient C139(15:8) of DAC miniDSP (DAC buffer A)
23 (0x17) 0000 0000 Coefficient C139(7:0) of DAC miniDSP (DAC buffer A)
24 (0x18) 0000 0000 Coefficient C140(15:8) of DAC miniDSP (DAC buffer A)
25 (0x19) 0000 0000 Coefficient C140(7:0) of DAC miniDSP (DAC buffer A)
26 (0x1A) 0000 0000 Coefficient C141(15:8) of DAC miniDSP (DAC buffer A)
27 (0x1B) 0000 0000 Coefficient C141(7:0) of DAC miniDSP (DAC buffer A)
28 (0x1C) 0000 0000 Coefficient C142(15:8) of DAC miniDSP (DAC buffer A)
29 (0x1D) 0000 0000 Coefficient C142(7:0) of DAC miniDSP (DAC buffer A)
30 (0x1E) 0000 0000 Coefficient C143(15:8) of DAC miniDSP (DAC buffer A)
31 (0x1F) 0000 0000 Coefficient C143(7:0) of DAC miniDSP (DAC buffer A)
32 (0x20) 0000 0000 Coefficient C144(15:8) of DAC miniDSP (DAC buffer A)
33 (0x21) 0000 0000 Coefficient C144(7:0) of DAC miniDSP (DAC buffer A)
34 (0x22) 0000 0000 Coefficient C145(15:8) of DAC miniDSP (DAC buffer A)
35 (0x23) 0000 0000 Coefficient C145(7:0) of DAC miniDSP (DAC buffer A)
36 (0x24) 0000 0000 Coefficient C146(15:8) of DAC miniDSP (DAC buffer A)
37 (0x25) 0000 0000 Coefficient C146(7:0) of DAC miniDSP (DAC buffer A)
38 (0x26) 0000 0000 Coefficient C147(15:8) of DAC miniDSP (DAC buffer A)
39 (0x27) 0000 0000 Coefficient C147(7:0) of DAC miniDSP (DAC buffer A)
40 (0x28) 0000 0000 Coefficient C148(15:8) of DAC miniDSP (DAC buffer A)
41 (0x29) 0000 0000 Coefficient C148(7:0) of DAC miniDSP (DAC buffer A)
42 (0x2A) 0000 0000 Coefficient C149(15:8) of DAC miniDSP (DAC buffer A)
43 (0x2B) 0000 0000 Coefficient C149(7:0) of DAC miniDSP (DAC buffer A)
44 (0x2C) 0000 0000 Coefficient C150(15:8) of DAC miniDSP (DAC buffer A)
45 (0x2D) 0000 0000 Coefficient C150(7:0) of DAC miniDSP (DAC buffer A)
46 (0x2E) 0000 0000 Coefficient C151(15:8) of DAC miniDSP (DAC buffer A)
47 (0x2F) 0000 0000 Coefficient C151(7:0) of DAC miniDSP (DAC buffer A)
48 (0x30) 0000 0000 Coefficient C152(15:8) of DAC miniDSP (DAC buffer A)
49 (0x31) 0000 0000 Coefficient C152(7:0) of DAC miniDSP (DAC buffer A)
50 (0x32) 0000 0000 Coefficient C153(15:8) of DAC miniDSP (DAC buffer A)
51 (0x33) 0000 0000 Coefficient C153(7:0) of DAC miniDSP (DAC buffer A)
52 (0x34) 0000 0000 Coefficient C154(15:8) of DAC miniDSP (DAC buffer A)
53 (0x35) 0000 0000 Coefficient C154(7:0) of DAC miniDSP (DAC buffer A)
54 (0x36) 0000 0000 Coefficient C155(15:8) of DAC miniDSP (DAC buffer A)
55 (0x37) 0000 0000 Coefficient C155(7:0) of DAC miniDSP (DAC buffer A)
56 (0x38) 0000 0000 Coefficient C156(15:8) of DAC miniDSP (DAC buffer A)
57 (0x39) 0000 0000 Coefficient C156(7:0) of DAC miniDSP (DAC buffer A)
58 (0x3A) 0000 0000 Coefficient C157(15:8) of DAC miniDSP (DAC buffer A)
59 (0x3B) 0000 0000 Coefficient C157(7:0) of DAC miniDSP (DAC buffer A)
60 (0x3C) 0000 0000 Coefficient C158(15:8) of DAC miniDSP (DAC buffer A)
61 (0x3D) 0000 0000 Coefficient C158(7:0) of DAC miniDSP (DAC buffer A)
62 (0x3E) 0000 0000 Coefficient C159(15:8) of DAC miniDSP (DAC buffer A)
63 (0x3F) 0000 0000 Coefficient C159(7:0) of DAC miniDSP (DAC buffer A)
64 (0x40) 0000 0000 Coefficient C160(15:8) of DAC miniDSP (DAC buffer A)
65 (0x41) 0000 0000 Coefficient C160(7:0) of DAC miniDSP (DAC buffer A)
66 (0x42) 0000 0000 Coefficient C161(15:8) of DAC miniDSP (DAC buffer A)
67 (0x43) 0000 0000 Coefficient C161(7:0) of DAC miniDSP (DAC buffer A)
68 (0x44) 0000 0000 Coefficient C162(15:8) of DAC miniDSP (DAC buffer A)
69 (0x45) 0000 0000 Coefficient C162(7:0) of DAC miniDSP (DAC buffer A)
70 (0x46) 0000 0000 Coefficient C163(15:8) of DAC miniDSP (DAC buffer A)
71 (0x47) 0000 0000 Coefficient C163(7:0) of DAC miniDSP (DAC buffer A)
72 (0x48) 0000 0000 Coefficient C164(15:8) of DAC miniDSP (DAC buffer A)
73 (0x49) 0000 0000 Coefficient C164(7:0) of DAC miniDSP (DAC buffer A)
74 (0x4A) 0000 0000 Coefficient C165(15:8) of DAC miniDSP (DAC buffer A)
75 (0x4B) 0000 0000 Coefficient C165(7:0) of DAC miniDSP (DAC buffer A)
76 (0x4C) 0000 0000 Coefficient C166(15:8) of DAC miniDSP (DAC buffer A)
77 (0x4D) 0000 0000 Coefficient C166(7:0) of DAC miniDSP (DAC buffer A)
78 (0x4E) 0000 0000 Coefficient C167(15:8) of DAC miniDSP (DAC buffer A)
79 (0x4F) 0000 0000 Coefficient C167(7:0) of DAC miniDSP (DAC buffer A)
80 (0x50) 0000 0000 Coefficient C168(15:8) of DAC miniDSP (DAC buffer A)
81 (0x51) 0000 0000 Coefficient C168(7:0) of DAC miniDSP (DAC buffer A)
82 (0x52) 0000 0000 Coefficient C169(15:8) of DAC miniDSP (DAC buffer A)
83 (0x53) 0000 0000 Coefficient C169(7:0) of DAC miniDSP (DAC buffer A)
84 (0x54) 0000 0000 Coefficient C170(15:8) of DAC miniDSP (DAC buffer A)
85 (0x55) 0000 0000 Coefficient C170(7:0) of DAC miniDSP (DAC buffer A)
86 (0x56) 0000 0000 Coefficient C171(15:8) of DAC miniDSP (DAC buffer A)
87 (0x57) 0000 0000 Coefficient C171(7:0) of DAC miniDSP (DAC buffer A)
88 (0x58) 0000 0000 Coefficient C172(15:8) of DAC miniDSP (DAC buffer A)
89 (0x59) 0000 0000 Coefficient C172(7:0) of DAC miniDSP (DAC buffer A)
90 (0x5A) 0000 0000 Coefficient C173(15:8) of DAC miniDSP (DAC buffer A)
91 (0x5B) 0000 0000 Coefficient C173(7:0) of DAC miniDSP (DAC buffer A)
92 (0x5C) 0000 0000 Coefficient C174(15:8) of DAC miniDSP (DAC buffer A)
93 (0x5D) 0000 0000 Coefficient C174(7:0) of DAC miniDSP (DAC buffer A)
94 (0x5E) 0000 0000 Coefficient C175(15:8) of DAC miniDSP (DAC buffer A)
95 (0x5F) 0000 0000 Coefficient C175(7:0) of DAC miniDSP (DAC buffer A)
96 (0x60) 0000 0000 Coefficient C176(15:8) of DAC miniDSP (DAC buffer A)
97 (0x61) 0000 0000 Coefficient C176(7:0) of DAC miniDSP (DAC buffer A)
98 (0x62) 0000 0000 Coefficient C177(15:8) of DAC miniDSP (DAC buffer A)
99 (0x63) 0000 0000 Coefficient C177(7:0) of DAC miniDSP (DAC buffer A)
100 (0x64) 0000 0000 Coefficient C178(15:8) of DAC miniDSP (DAC buffer A)
101 (0x65) 0000 0000 Coefficient C178(7:0) of DAC miniDSP (DAC buffer A)
102 (0x66) 0000 0000 Coefficient C179(15:8) of DAC miniDSP (DAC buffer A)
103 (0x67) 0000 0000 Coefficient C179(7:0) of DAC miniDSP (DAC buffer A)
104 (0x68) 0000 0000 Coefficient C180(15:8) of DAC miniDSP (DAC buffer A)
105 (0x69) 0000 0000 Coefficient C180(7:0) of DAC miniDSP (DAC buffer A)
106 (0x6A) 0000 0000 Coefficient C181(15:8) of DAC miniDSP (DAC buffer A)
107 (0x6B) 0000 0000 Coefficient C181(7:0) of DAC miniDSP (DAC buffer A)
108 (0x6C) 0000 0000 Coefficient C182(15:8) of DAC miniDSP (DAC buffer A)
109 (0x6D) 0000 0000 Coefficient C182(7:0) of DAC miniDSP (DAC buffer A)
110 (0x6E) 0000 0000 Coefficient C183(15:8) of DAC miniDSP (DAC buffer A)
111 (0x6F) 0000 0000 Coefficient C183(7:0) of DAC miniDSP (DAC buffer A)
112 (0x70) 0000 0000 Coefficient C184(15:8) of DAC miniDSP (DAC buffer A)
113 (0x71) 0000 0000 Coefficient C184(7:0) of DAC miniDSP (DAC buffer A)
114 (0x72) 0000 0000 Coefficient C185(15:8) of DAC miniDSP (DAC buffer A)
115 (0x73) 0000 0000 Coefficient C185(7:0) of DAC miniDSP (DAC buffer A)
116 (0x74) 0000 0000 Coefficient C186(15:8) of DAC miniDSP (DAC buffer A)
117 (0x75) 0000 0000 Coefficient C186(7:0) of DAC miniDSP (DAC buffer A)
118 (0x76) 0000 0000 Coefficient C187(15:8) of DAC miniDSP (DAC buffer A)
119 (0x77) 0000 0000 Coefficient C187(7:0) of DAC miniDSP (DAC buffer A)
120 (0x78) 0000 0000 Coefficient C188(15:8) of DAC miniDSP (DAC buffer A)
121 (0x79) 0000 0000 Coefficient C188(7:0) of DAC miniDSP (DAC buffer A)
122 (0x7A) 0000 0000 Coefficient C189(15:8) of DAC miniDSP (DAC buffer A)
123 (0x7B) 0000 0000 Coefficient C189(7:0) of DAC miniDSP (DAC buffer A)
124 (0x7C) 0000 0000 Coefficient C190(15:8) of DAC miniDSP (DAC buffer A)
125 (0x7D) 0000 0000 Coefficient C190(7:0) of DAC miniDSP (DAC buffer A)
126 (0x7E) 0000 0000 Coefficient C191(15:8) of DAC miniDSP (DAC buffer A)
127 (0x7F) 0000 0000 Coefficient C191(7:0) of DAC miniDSP (DAC buffer A)

Control Registers, Page 11: DAC Programmable Coefficients RAM Buffer A (193:255)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-3 Page 11 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-11 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers should not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register should always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers should be written in this sequence. Table 7-169 is a list of the page-11 registers, excepting the previously described register 0.

Table 7-169 Page-11 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) XXXX XXXX Reserved. Do not write to this register.
 2 (0x02) 0000 0000 Coefficient C193(15:8) of DAC miniDSP (DAC buffer A)
 3 (0x03) 0000 0000 Coefficient C193(7:0) of DAC miniDSP (DAC buffer A)
 4 (0x04) 0000 0000 Coefficient C194(15:8) of DAC miniDSP (DAC buffer A)
 5 (0x05) 0000 0000 Coefficient C194(7:0) of DAC miniDSP (DAC buffer A)
 6 (0x06) 0000 0000 Coefficient C195(15:8) of DAC miniDSP (DAC buffer A)
 7 (0x07) 0000 0000 Coefficient C195(7:0) of DAC miniDSP (DAC buffer A)
 8 (0x08) 0000 0000 Coefficient C196(15:8) of DAC miniDSP (DAC buffer A)
 9 (0x09) 0000 0000 Coefficient C196(7:0) of DAC miniDSP (DAC buffer A)
10 (0x0A) 0000 0000 Coefficient C197(15:8) of DAC miniDSP (DAC buffer A)
11 (0x0B) 0000 0000 Coefficient C197(7:0) of DAC miniDSP (DAC buffer A)
12 (0x0C) 0000 0000 Coefficient C198(15:8) of DAC miniDSP (DAC buffer A)
13 (0x0D) 0000 0000 Coefficient C198(7:0) of DAC miniDSP (DAC buffer A)
14 (0x0E) 0000 0000 Coefficient C199(15:8) of DAC miniDSP (DAC buffer A)
15 (0x0F) 0000 0000 Coefficient C199(7:0) of DAC miniDSP (DAC buffer A)
16 (0x10) 0000 0000 Coefficient C200(15:8) of DAC miniDSP (DAC buffer A)
17 (0x11) 0000 0000 Coefficient C200(7:0) of DAC miniDSP (DAC buffer A)
18 (0x12) 0000 0000 Coefficient C201(15:8) of DAC miniDSP (DAC buffer A)
19 (0x13) 0000 0000 Coefficient C201(7:0) of DAC miniDSP (DAC buffer A)
20 (0x14) 0000 0000 Coefficient C202(15:8) of DAC miniDSP (DAC buffer A)
21 (0x15) 0000 0000 Coefficient C202(7:0) of DAC miniDSP (DAC buffer A)
22 (0x16) 0000 0000 Coefficient C203(15:8) of DAC miniDSP (DAC buffer A)
23 (0x17) 0000 0000 Coefficient C203(7:0) of DAC miniDSP (DAC buffer A)
24 (0x18) 0000 0000 Coefficient C204(15:8) of DAC miniDSP (DAC buffer A)
25 (0x19) 0000 0000 Coefficient C204(7:0) of DAC miniDSP (DAC buffer A)
26 (0x1A) 0000 0000 Coefficient C205(15:8) of DAC miniDSP (DAC buffer A)
27 (0x1B) 0000 0000 Coefficient C205(7:0) of DAC miniDSP (DAC buffer A)
28 (0x1C) 0000 0000 Coefficient C206(15:8) of DAC miniDSP (DAC buffer A)
29 (0x1D) 0000 0000 Coefficient C206(7:0) of DAC miniDSP (DAC buffer A)
30 (0x1E) 0000 0000 Coefficient C207(15:8) of DAC miniDSP (DAC buffer A)
31 (0x1F) 0000 0000 Coefficient C207(7:0) of DAC miniDSP (DAC buffer A)
32 (0x20) 0000 0000 Coefficient C208(15:8) of DAC miniDSP (DAC buffer A)
33 (0x21) 0000 0000 Coefficient C208(7:0) of DAC miniDSP (DAC buffer A)
34 (0x22) 0000 0000 Coefficient C209(15:8) of DAC miniDSP (DAC buffer A)
35 (0x23) 0000 0000 Coefficient C209(7:0) of DAC miniDSP (DAC buffer A)
36 (0x24) 0000 0000 Coefficient C210(15:8) of DAC miniDSP (DAC buffer A)
37 (0x25) 0000 0000 Coefficient C210(7:0) of DAC miniDSP (DAC buffer A)
38 (0x26) 0000 0000 Coefficient C211(15:8) of DAC miniDSP (DAC buffer A)
39 (0x27) 0000 0000 Coefficient C211(7:0) of DAC miniDSP (DAC buffer A)
40 (0x28) 0000 0000 Coefficient C212(15:8) of DAC miniDSP (DAC buffer A)
41 (0x29) 0000 0000 Coefficient C212(7:0) of DAC miniDSP (DAC buffer A)
42 (0x2A) 0000 0000 Coefficient C213(15:8) of DAC miniDSP (DAC buffer A)
43 (0x2B) 0000 0000 Coefficient C213(7:0) of DAC miniDSP (DAC buffer A)
44 (0x2C) 0000 0000 Coefficient C214(15:8) of DAC miniDSP (DAC buffer A)
45 (0x2D) 0000 0000 Coefficient C214(7:0) of DAC miniDSP (DAC buffer A)
46 (0x2E) 0000 0000 Coefficient C215(15:8) of DAC miniDSP (DAC buffer A)
47 (0x2F) 0000 0000 Coefficient C215(7:0) of DAC miniDSP (DAC buffer A)
48 (0x30) 0000 0000 Coefficient C216(15:8) of DAC miniDSP (DAC buffer A)
49 (0x31) 0000 0000 Coefficient C216(7:0) of DAC miniDSP (DAC buffer A)
50 (0x32) 0000 0000 Coefficient C217(15:8) of DAC miniDSP (DAC buffer A)
51 (0x33) 0000 0000 Coefficient C217(7:0) of DAC miniDSP (DAC buffer A)
52 (0x34) 0000 0000 Coefficient C218(15:8) of DAC miniDSP (DAC buffer A)
53 (0x35) 0000 0000 Coefficient C218(7:0) of DAC miniDSP (DAC buffer A)
54 (0x36) 0000 0000 Coefficient C219(15:8) of DAC miniDSP (DAC buffer A)
55 (0x37) 0000 0000 Coefficient C219(7:0) of DAC miniDSP (DAC buffer A)
56 (0x38) 0000 0000 Coefficient C220(15:8) of DAC miniDSP (DAC buffer A)
57 (0x39) 0000 0000 Coefficient C220(7:0) of DAC miniDSP (DAC buffer A)
58 (0x3A) 0000 0000 Coefficient C221(15:8) of DAC miniDSP (DAC buffer A)
59 (0x3B) 0000 0000 Coefficient C221(7:0) of DAC miniDSP (DAC buffer A)
60 (0x3C) 0000 0000 Coefficient C222(15:8) of DAC miniDSP (DAC buffer A)
61 (0x3D) 0000 0000 Coefficient C222(7:0) of DAC miniDSP (DAC buffer A)
62 (0x3E) 0000 0000 Coefficient C223(15:8) of DAC miniDSP (DAC buffer A)
63 (0x3F) 0000 0000 Coefficient C223(7:0) of DAC miniDSP (DAC buffer A)
64 (0x40) 0000 0000 Coefficient C224(15:8) of DAC miniDSP (DAC buffer A)
65 (0x41) 0000 0000 Coefficient C224(7:0) of DAC miniDSP (DAC buffer A)
66 (0x42) 0000 0000 Coefficient C225(15:8) of DAC miniDSP (DAC buffer A)
67 (0x43) 0000 0000 Coefficient C225(7:0) of DAC miniDSP (DAC buffer A)
68 (0x44) 0000 0000 Coefficient C226(15:8) of DAC miniDSP (DAC buffer A)
69 (0x45) 0000 0000 Coefficient C226(7:0) of DAC miniDSP (DAC buffer A)
70 (0x46) 0000 0000 Coefficient C227(15:8) of DAC miniDSP (DAC buffer A)
71 (0x47) 0000 0000 Coefficient C227(7:0) of DAC miniDSP (DAC buffer A)
72 (0x48) 0000 0000 Coefficient C228(15:8) of DAC miniDSP (DAC buffer A)
73 (0x49) 0000 0000 Coefficient C228(7:0) of DAC miniDSP (DAC buffer A)
74 (0x4A) 0000 0000 Coefficient C229(15:8) of DAC miniDSP (DAC buffer A)
75 (0x4B) 0000 0000 Coefficient C229(7:0) of DAC miniDSP (DAC buffer A)
76 (0x4C) 0000 0000 Coefficient C230(15:8) of DAC miniDSP (DAC buffer A)
77 (0x4D) 0000 0000 Coefficient C230(7:0) of DAC miniDSP (DAC buffer A)
78 (0x4E) 0000 0000 Coefficient C231(15:8) of DAC miniDSP (DAC buffer A)
79 (0x4F) 0000 0000 Coefficient C231(7:0) of DAC miniDSP (DAC buffer A)
80 (0x50) 0000 0000 Coefficient C232(15:8) of DAC miniDSP (DAC buffer A)
81 (0x51) 0000 0000 Coefficient C232(7:0) of DAC miniDSP (DAC buffer A)
82 (0x52) 0000 0000 Coefficient C233(15:8) of DAC miniDSP (DAC buffer A)
83 (0x53) 0000 0000 Coefficient C233(7:0) of DAC miniDSP (DAC buffer A)
84 (0x54) 0000 0000 Coefficient C234(15:8) of DAC miniDSP (DAC buffer A)
85 (0x55) 0000 0000 Coefficient C234(7:0) of DAC miniDSP (DAC buffer A)
86 (0x56) 0000 0000 Coefficient C235(15:8) of DAC miniDSP (DAC buffer A)
87 (0x57) 0000 0000 Coefficient C235(7:0) of DAC miniDSP (DAC buffer A)
88 (0x58) 0000 0000 Coefficient C236(15:8) of DAC miniDSP (DAC buffer A)
89 (0x59) 0000 0000 Coefficient C236(7:0) of DAC miniDSP (DAC buffer A)
90 (0x5A) 0000 0000 Coefficient C237(15:8) of DAC miniDSP (DAC buffer A)
91 (0x5B) 0000 0000 Coefficient C237(7:0) of DAC miniDSP (DAC buffer A)
92 (0x5C) 0000 0000 Coefficient C238(15:8) of DAC miniDSP (DAC buffer A)
93 (0x5D) 0000 0000 Coefficient C238(7:0) of DAC miniDSP (DAC buffer A)
94 (0x5E) 0000 0000 Coefficient C239(15:8) of DAC miniDSP (DAC buffer A)
95 (0x5F) 0000 0000 Coefficient C239(7:0) of DAC miniDSP (DAC buffer A)
96 (0x60) 0000 0000 Coefficient C240(15:8) of DAC miniDSP (DAC buffer A)
97 (0x61) 0000 0000 Coefficient C240(7:0) of DAC miniDSP (DAC buffer A)
98 (0x62) 0000 0000 Coefficient C241(15:8) of DAC miniDSP (DAC buffer A)
99 (0x63) 0000 0000 Coefficient C241(7:0) of DAC miniDSP (DAC buffer A)
100 (0x64) 0000 0000 Coefficient C242(15:8) of DAC miniDSP (DAC buffer A)
101 (0x65) 0000 0000 Coefficient C242(7:0) of DAC miniDSP (DAC buffer A)
102 (0x66) 0000 0000 Coefficient C243(15:8) of DAC miniDSP (DAC buffer A)
103 (0x67) 0000 0000 Coefficient C243(7:0) of DAC miniDSP (DAC buffer A)
104 (0x68) 0000 0000 Coefficient C244(15:8) of DAC miniDSP (DAC buffer A)
105 (0x69) 0000 0000 Coefficient C244(7:0) of DAC miniDSP (DAC buffer A)
106 (0x6A) 0000 0000 Coefficient C245(15:8) of DAC miniDSP (DAC buffer A)
107 (0x6B) 0000 0000 Coefficient C245(7:0) of DAC miniDSP (DAC buffer A)
108 (0x6C) 0000 0000 Coefficient C246(15:8) of DAC miniDSP (DAC buffer A)
109 (0x6D) 0000 0000 Coefficient C246(7:0) of DAC miniDSP (DAC buffer A)
110 (0x6E) 0000 0000 Coefficient C247(15:8) of DAC miniDSP (DAC buffer A)
111 (0x6F) 0000 0000 Coefficient C247(7:0) of DAC miniDSP (DAC buffer A)
112 (0x70) 0000 0000 Coefficient C248(15:8) of DAC miniDSP (DAC buffer A)
113 (0x71) 0000 0000 Coefficient C248(7:0) of DAC miniDSP (DAC buffer A)
114 (0x72) 0000 0000 Coefficient C249(15:8) of DAC miniDSP (DAC buffer A)
115 (0x73) 0000 0000 Coefficient C249(7:0) of DAC miniDSP (DAC buffer A)
116 (0x74) 0000 0000 Coefficient C250(15:8) of DAC miniDSP (DAC buffer A)
117 (0x75) 0000 0000 Coefficient C250(7:0) of DAC miniDSP (DAC buffer A)
118 (0x76) 0000 0000 Coefficient C251(15:8) of DAC miniDSP (DAC buffer A)
119 (0x77) 0000 0000 Coefficient C251(7:0) of DAC miniDSP (DAC buffer A)
120 (0x78) 0000 0000 Coefficient C252(15:8) of DAC miniDSP (DAC buffer A)
121 (0x79) 0000 0000 Coefficient C252(7:0) of DAC miniDSP (DAC buffer A)
122 (0x7A) 0000 0000 Coefficient C253(15:8) of DAC miniDSP (DAC buffer A)
123 (0x7B) 0000 0000 Coefficient C253(7:0) of DAC miniDSP (DAC buffer A)
124 (0x7C) 0000 0000 Coefficient C254(15:8) of DAC miniDSP (DAC buffer A)
125 (0x7D) 0000 0000 Coefficient C254(7:0) of DAC miniDSP (DAC buffer A)
126 (0x7E) 0000 0000 Coefficient C255(15:8) of DAC miniDSP (DAC buffer A)
127 (0x7F) 0000 0000 Coefficient C255(7:0) of DAC miniDSP (DAC buffer A)

Control Registers, Page 12: DAC Programmable Coefficients RAM Buffer B (1:63)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-4 Page 12 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-12 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers should not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register should always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers should be written in this sequence. is a list of the page-12 registers, excepting the previously described register 0.

Table 7-170 Page-12 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) 0000 0000 Reserved. Do not write to this register.
 2 (0x02) 0111 1111 Coefficient NO(15:8) for DAC-programmable biquad A or coefficient C1(15:8) of DAC miniDSP (DAC buffer B)
 3 (0x03) 1111 1111 Coefficient NO(7:0) for DAC-programmable biquad A or coefficient C1(7:0) of DAC miniDSP (DAC buffer B)
 4 (0x04) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad A or coefficient C2(15:8) of DAC miniDSP (DAC buffer B)
 5 (0x05) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad A or coefficient C2(7:0) of DAC miniDSP (DAC buffer B)
 6 (0x06) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad A or coefficient C3(15:8) of DAC miniDSP (DAC buffer B)
 7 (0x07) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad A or coefficient C3(7:0) of DAC miniDSP (DAC buffer B)
 8 (0x08) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad A or coefficient C4(15:8) of DAC miniDSP (DAC buffer B)
 9 (0x09) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad A or coefficient C4(7:0) of DAC miniDSP (DAC buffer B)
10 (0x0A) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad A or coefficient C5(15:8) of DAC miniDSP (DAC buffer B)
11 (0x0B) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad A or coefficient C5(7:0) of DAC miniDSP (DAC buffer B)
12 (0x0C) 0111 1111 Coefficient NO(15:8) for DAC-programmable biquad B or coefficient C6(15:8) of DAC miniDSP (DAC buffer B)
13 (0x0D) 1111 1111 Coefficient NO(7:0) for DAC-programmable biquad B or coefficient C6(7:0) of DAC miniDSP (DAC buffer B)
14 (0x0E) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad B or coefficient C7(15:8) of DAC miniDSP (DAC buffer B)
15 (0x0F) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad B or coefficient C7(7:0) of DAC miniDSP (DAC buffer B)
16 (0x10) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad B or coefficient C8(15:8) of DAC miniDSP (DAC buffer B)
17 (0x11) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad B or coefficient C8(7:0) of DAC miniDSP (DAC buffer B)
18 (0x12) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad B or coefficient C9(15:8) of DAC miniDSP (DAC buffer B)
19 (0x13) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad B or coefficient C9(7:0) of DAC miniDSP (DAC buffer B)
20 (0x14) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad B or coefficient C10(15:8) of DAC miniDSP (DAC buffer B)
21 (0x15) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad B or coefficient C10(7:0) of DAC miniDSP (DAC buffer B)
22 (0x16) 0111 1111 Coefficient NO(15:8) for DAC-programmable biquad C or coefficient C11(15:8) of DAC miniDSP (DAC buffer B)
23 (0x17) 1111 1111 Coefficient NO(7:0) for DAC-programmable biquad C or coefficient C11(7:0) of DAC miniDSP (DAC buffer B)
24 (0x18) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad C or coefficient C12(15:8) of DAC miniDSP (DAC buffer B)
25 (0x19) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad C or coefficient C12(7:0) of DAC miniDSP (DAC buffer B)
26 (0x1A) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad C or coefficient C13(15:8) of DAC miniDSP (DAC buffer B)
27 (0x1B) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad C or coefficient C13(7:0) of DAC miniDSP (DAC buffer B)
28 (0x1C) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad C or coefficient C14(15:8) of DAC miniDSP (DAC buffer B)
29 (0x1D) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad C or coefficient C14(7:0) of DAC miniDSP (DAC buffer B)
30 (0x1E) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad C or coefficient C15(15:8) of DAC miniDSP (DAC buffer B)
31 (0x1F) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad C or coefficient C15(7:0) of DAC miniDSP (DAC buffer B)
32 (0x20) 0111 1111 Coefficient NO(15:8) for DAC-programmable biquad D or coefficient C16(15:8) of DAC miniDSP (DAC buffer B)
33 (0x21) 1111 1111 Coefficient NO(7:0) for DAC-programmable biquad D or coefficient C16(7:0) of DAC miniDSP (DAC buffer B)
34 (0x22) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad D or coefficient C17(15:8) of DAC miniDSP (DAC buffer B)
35 (0x23) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad D or coefficient C17(7:0) of DAC miniDSP (DAC buffer B)
36 (0x24) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad D or coefficient C18(15:8) of DAC miniDSP (DAC buffer B)
37 (0x25) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad D or coefficient C18(7:0) of DAC miniDSP (DAC buffer B)
38 (0x26) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad D or coefficient C19(15:8) of DAC miniDSP (DAC buffer B)
39 (0x27) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad D or coefficient C19(7:0) of DAC miniDSP (DAC buffer B)
40 (0x28) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad D or coefficient C20(15:8) of DAC miniDSP (DAC buffer B)
41 (0x29) 0000 0000 Coefficient D2(17:0) for DAC-programmable biquad D or coefficient C20(7:0) of DAC miniDSP (DAC buffer B)
42 (0x2A) 0111 1111 Coefficient NO(15:8) for DAC-programmable biquad E or coefficient C21(15:8) of DAC miniDSP (DAC buffer B)
43 (0x2B) 1111 1111 Coefficient NO(7:0) for DAC-programmable biquad E or coefficient C21(7:0) of DAC miniDSP (DAC buffer B)
44 (0x2C) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad E or coefficient C22(15:8) of DAC miniDSP (DAC buffer B)
45 (0x2D) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad E or coefficient C22(7:0) of DAC miniDSP (DAC buffer B)
46 (0x2E) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad E or coefficient C23(15:8) of DAC miniDSP (DAC buffer B)
47 (0x2F) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad E or coefficient C23(7:0) of DAC miniDSP (DAC buffer B)
48 (0x30) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad E or coefficient C24(15:8) of DAC miniDSP (DAC buffer B)
49 (0x31) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad E or coefficient C24(7:0) of DAC miniDSP (DAC buffer B)
50 (0x32) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad E or coefficient C25(15:8) of DAC miniDSP (DAC buffer B)
51 (0x33) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad E or coefficient C25(7:0) of DAC miniDSP (DAC buffer B)
52 (0x34) 0111 1111 Coefficient NO(15:8) for DAC-programmable biquad F or coefficient C26(15:8) of DAC miniDSP (DAC buffer B)
53 (0x35) 1111 1111 Coefficient NO(7:0) for DAC-programmable biquad F or coefficient C26(7:0) of DAC miniDSP (DAC buffer B)
54 (0x36) 0000 0000 Coefficient N1(15:8) for DAC-programmable biquad F or coefficient C27(15:8) of DAC miniDSP (DAC buffer B)
55 (0x37) 0000 0000 Coefficient N1(7:0) for DAC-programmable biquad F or coefficient C27(7:0) of DAC miniDSP (DAC buffer B)
56 (0x38) 0000 0000 Coefficient N2(15:8) for DAC-programmable biquad F or coefficient C28(15:8) of DAC miniDSP (DAC buffer B)
57 (0x39) 0000 0000 Coefficient N2(7:0) for DAC-programmable biquad F or coefficient C28(7:0) of DAC miniDSP (DAC buffer B)
58 (0x3A) 0000 0000 Coefficient D1(15:8) for DAC-programmable biquad F or coefficient C29(15:8) of DAC miniDSP (DAC buffer B)
59 (0x3B) 0000 0000 Coefficient D1(7:0) for DAC-programmable biquad F or coefficient C29(7:0) of DAC miniDSP (DAC buffer B)
60 (0x3C) 0000 0000 Coefficient D2(15:8) for DAC-programmable biquad F or coefficient C30(15:8) of DAC miniDSP (DAC buffer B)
61 (0x3D) 0000 0000 Coefficient D2(7:0) for DAC-programmable biquad F or coefficient C30(7:0) of DAC miniDSP (DAC buffer B)
62 (0x3E) 0000 0000 Coefficient C31(15:8) of DAC miniDSP (DAC buffer B)
63 (0x3F) 0000 0000 Coefficient C31(7:0) of DAC miniDSP (DAC buffer B)
64 (0x40) 0000 0000 Coefficient C32(15:8) of DAC miniDSP (DAC buffer B)
65 (0x41) 0000 0000 Coefficient C32(7:0) of DAC miniDSP (DAC buffer B)
66 (0x42) 0111 1111 Coefficient C33(15:8) of DAC miniDSP (DAC buffer B)
67 (0x43) 1111 1111 Coefficient C33(7:0) of DAC miniDSP (DAC buffer B)
68 (0x44) 0000 0000 Coefficient C34(15:8) of DAC miniDSP (DAC buffer B)
69 (0x45) 0000 0000 Coefficient C34(7:0) of DAC miniDSP (DAC buffer B)
70 (0x46) 0000 0000 Coefficient C35(15:8) of DAC miniDSP (DAC buffer B)
71 (0x47) 0000 0000 Coefficient C35(7:0) of DAC miniDSP (DAC buffer B)
72 (0x48) 0000 0000 Coefficient C36(15:8) of DAC miniDSP (DAC buffer B)
73 (0x49) 0000 0000 Coefficient C36(7:0) of DAC miniDSP (DAC buffer B)
74 (0x4A) 0000 0000 Coefficient C37(15:8) of DAC miniDSP (DAC buffer B)
75 (0x4B) 0000 0000 Coefficient C37(7:0) of DAC miniDSP (DAC buffer B)
76 (0x4C) 0111 1111 Coefficient C38(15:8) of DAC miniDSP (DAC buffer B)
77 (0x4D) 1111 1111 Coefficient C38(7:0) of DAC miniDSP (DAC buffer B)
78 (0x4E) 0000 0000 Coefficient C39(15:8) of DAC miniDSP (DAC buffer B)
79 (0x4F) 0000 0000 Coefficient C39(7:0) of DAC miniDSP (DAC buffer B)
80 (0x50) 0000 0000 Coefficient C40(15:8) of DAC miniDSP (DAC buffer B)
81 (0x51) 0000 0000 Coefficient C40(7:0) of DAC miniDSP (DAC buffer B)
82 (0x52) 0000 0000 Coefficient C41(15:8) of DAC miniDSP (DAC buffer B)
83 (0x53) 0000 0000 Coefficient C41(7:0) of DAC miniDSP (DAC buffer B)
84 (0x54) 0000 0000 Coefficient C42(15:8) of DAC miniDSP (DAC buffer B)
85 (0x55) 0000 0000 Coefficient C42(7:0) of DAC miniDSP (DAC buffer B)
86 (0x56) 0111 1111 Coefficient C43(15:8) of DAC miniDSP (DAC buffer B)
87 (0x57) 1111 1111 Coefficient C43(7:0) of DAC miniDSP (DAC buffer B)
88 (0x58) 0000 0000 Coefficient C44(15:8) of DAC miniDSP (DAC buffer B)
89 (0x59) 0000 0000 Coefficient C44(7:0) of DAC miniDSP (DAC buffer B)
90 (0x5A) 0000 0000 Coefficient C45(15:8) of DAC miniDSP (DAC buffer B)
91 (0x5B) 0000 0000 Coefficient C45(7:0) of DAC miniDSP (DAC buffer B)
92 (0x5C) 0000 0000 Coefficient C46(15:8) of DAC miniDSP (DAC buffer B)
93 (0x5D) 0000 0000 Coefficient C46(7:0) of DAC miniDSP (DAC buffer B)
94 (0x5E) 0000 0000 Coefficient C47(15:8) of DAC miniDSP (DAC buffer B)
95 (0x5F) 0000 0000 Coefficient C47(7:0) of DAC miniDSP (DAC buffer B)
96 (0x60) 0111 1111 Coefficient C48(15:8) of DAC miniDSP (DAC buffer B)
97 (0x61) 1111 1111 Coefficient C48(7:0) of DAC miniDSP (DAC buffer B)
98 (0x62) 0000 0000 Coefficient C49(15:8) of DAC miniDSP (DAC buffer B)
99 (0x63) 0000 0000 Coefficient C49(7:0) of DAC miniDSP (DAC buffer B)
100 (0x64) 0000 0000 Coefficient C50(15:8) of DAC miniDSP (DAC buffer B)
101 (0x65) 0000 0000 Coefficient C50(7:0) of DAC miniDSP (DAC buffer B)
102 (0x66) 0000 0000 Coefficient C51(15:8) of DAC miniDSP (DAC buffer B)
103 (0x67) 0000 0000 Coefficient C51(7:0) of DAC miniDSP (DAC buffer B)
104 (0x68) 0000 0000 Coefficient C52(15:8) of DAC miniDSP (DAC buffer B)
105 (0x69) 0000 0000 Coefficient C52(7:0) of DAC miniDSP (DAC buffer B)
106 (0x6A) 0111 1111 Coefficient C53(15:8) of DAC miniDSP (DAC buffer B)
107 (0x6B) 1111 1111 Coefficient C53(7:0) of DAC miniDSP (DAC buffer B)
108 (0x6C) 0000 0000 Coefficient C54(15:8) of DAC miniDSP (DAC buffer B)
109 (0x6D) 0000 0000 Coefficient C54(7:0) of DAC miniDSP (DAC buffer B)
110 (0x6E) 0000 0000 Coefficient C55(15:8) of DAC miniDSP (DAC buffer B)
111 (0x6F) 0000 0000 Coefficient C55(7:0) of DAC miniDSP (DAC buffer B)
112 (0x70) 0000 0000 Coefficient C56(15:8) of DAC miniDSP (DAC buffer B)
113 (0x71) 0000 0000 Coefficient C56(7:0) of DAC miniDSP (DAC buffer B)
114 (0x72) 0000 0000 Coefficient C57(15:8) of DAC miniDSP (DAC buffer B)
115 (0x73) 0000 0000 Coefficient C57(7:0) of DAC miniDSP (DAC buffer B)
116 (0x74) 0111 1111 Coefficient C58(15:8) of DAC miniDSP (DAC buffer B)
117 (0x75) 1111 1111 Coefficient C58(7:0) of DAC miniDSP (DAC buffer B)
118 (0x76) 0000 0000 Coefficient C59(15:8) of DAC miniDSP (DAC buffer B)
119 (0x77) 0000 0000 Coefficient C59(7:0) of DAC miniDSP (DAC buffer B)
120 (0x78) 0000 0000 Coefficient C60(15:8) of DAC miniDSP (DAC buffer B)
121 (0x79) 0000 0000 Coefficient C60(7:0) of DAC miniDSP (DAC buffer B)
122 (0x7A) 0000 0000 Coefficient C61(15:8) of DAC miniDSP (DAC buffer B)
123 (0x7B) 0000 0000 Coefficient C61(7:0) of DAC miniDSP (DAC buffer B)
124 (0x7C) 0000 0000 Coefficient C62(15:8) of DAC miniDSP (DAC buffer B)
125 (0x7D) 0000 0000 Coefficient C62(7:0) of DAC miniDSP (DAC buffer B)
126 (0x7E) 0000 0000 Coefficient C63(15:8) of DAC miniDSP (DAC buffer B)
127 (0x7F) 0000 0000 Coefficient C63(7:0) of DAC miniDSP (DAC buffer B)

Control Registers, Page 13: DAC Programmable Coefficients RAM Buffer B (65:127)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-5 Page 13 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-13 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers must not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register must always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers must be written in this sequence. is a list of the page-13 registers, excepting the previously described register 0.

Table 7-171 Page-13 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) 0000 0000 Reserved. Do not write to this register.
 2 (0x02) 0111 1111 Coefficient N0(15:8) for left DAC-programmable first-order IIR or coefficient C65(15:8) of DAC miniDSP (DAC buffer B)
 3 (0x03) 1111 1111 Coefficient N0(7:0) for left DAC-programmable first-order IIR or coefficient C65(7:0) of DAC miniDSP (DAC buffer B)
 4 (0x04) 0000 0000 Coefficient N1(15:8) for left DAC-programmable first-order IIR or coefficient C66(15:8) of DAC miniDSP (DAC buffer B)
 5 (0x05) 0000 0000 Coefficient N1(7:0) for left DAC-programmable first-order IIR or coefficient C66(7:0) of DAC miniDSP (DAC buffer B)
 6 (0x06) 0000 0000 Coefficient D1(15:8) for left DAC-programmable first-order IIR or coefficient C67(15:8) of DAC miniDSP (DAC buffer B)
 7 (0x07) 0000 0000 Coefficient D1(7:0) for left DAC-programmable first-order IIR or coefficient C67(7:0) of DAC miniDSP (DAC buffer B)
 8 (0x08) 0111 1111 Coefficient N0(15:8) for right DAC-programmable first-order IIR or coefficient C68(15:8) of DAC miniDSP (DAC buffer B)
 9 (0x09) 1111 1111 Coefficient N0(7:0) for right DAC-programmable first-order IIR or coefficient C68(7:0) of DAC miniDSP (DAC buffer B)
10 (0x0A) 0000 0000 Coefficient N1(15:8) for right DAC-programmable first-order IIR or coefficient C69(15:8) of DAC miniDSP (DAC buffer B)
11 (0x0B) 0000 0000 Coefficient N1(7:0) for right DAC-programmable first-order IIR or coefficient C69(7:0) of DAC miniDSP (DAC buffer B)
12 (0x0C) 0000 0000 Coefficient D1(15:8) for right DAC-programmable first-order IIR or coefficient C70(15:8) of DAC miniDSP (DAC buffer B)
13 (0x0D) 0000 0000 Coefficient D1(7:0) for right DAC-programmable first-order IIR or coefficient C70(7:0) of DAC miniDSP (DAC buffer B)
14 (0x0E) 0111 1111 Coefficient N0(15:8) for DRC first-order high-pass filter or coefficient C71(15:8) of DAC miniDSP (DAC buffer B)
15 (0x0F) 1111 0111 Coefficient N0(7:0) for DRC first-order high-pass filter or coefficient C71(7:0) of DAC miniDSP (DAC buffer B)
16 (0x10) 1000 0000 Coefficient N1(15:8) for DRC first-order high-pass filter or coefficient C72(15:8) of DAC miniDSP (DAC buffer B)
17 (0x11) 0000 1001 Coefficient N1(7:0) for DRC first-order high-pass filter or coefficient C72(7:0) of DAC miniDSP (DAC buffer B)
18 (0x12) 0111 1111 Coefficient D1(15:8) for DRC first-order high-pass filter or coefficient C73(15:8) of DAC miniDSP (DAC buffer B)
19 (0x13) 1110 1111 Coefficient D1(7:0) for DRC first-order high-pass filter or coefficient C73(7:0) of DAC miniDSP (DAC buffer B)
20 (0x14) 0000 0000 Coefficient N0(15:8) for DRC first-order low-pass filter or coefficient C74(15:8) of DAC miniDSP (DAC buffer B)
21 (0x15) 0001 0001 Coefficient N0(7:0) for DRC first-order low-pass filter or coefficient C74(7:0) of DAC miniDSP (DAC buffer B)
22 (0x16) 0000 0000 Coefficient N1(15:8) for DRC first-order low-pass filter or coefficient C75(15:8) of DAC miniDSP (DAC buffer B)
23 (0x17) 0001 0001 Coefficient N1(7:0) for DRC first-order low-pass filter or coefficient C75(7:0) of DAC miniDSP (DAC buffer B)
24 (0x18) 0111 1111 Coefficient D1(15:8) for DRC first-order low-pass filter or coefficient C76(15:8) of DAC miniDSP (DAC buffer B)
25 (0x19) 1101 1110 Coefficient D1(7:0) for DRC first-order low-pass filter or coefficient C76(7:0) of DAC miniDSP (DAC buffer B)
26 (0x1A) 0000 0000 Coefficient C77(15:8) of DAC miniDSP (DAC buffer B)
27 (0x1B) 0000 0000 Coefficient C77(7:0) of DAC miniDSP (DAC buffer B)
28 (0x1C) 0000 0000 Coefficient C78(15:8) of DAC miniDSP (DAC buffer B)
29 (0x1D) 0000 0000 Coefficient C78(7:0) of DAC miniDSP (DAC buffer B)
30 (0x1E) 0000 0000 Coefficient C79(15:8) of DAC miniDSP (DAC buffer B)
31 (0x1F) 0000 0000 Coefficient C79(7:0) of DAC miniDSP (DAC buffer B)
32 (0x20) 0000 0000 Coefficient C80(15:8) of DAC miniDSP (DAC buffer B)
33 (0x21) 0000 0000 Coefficient C80(7:0) of DAC miniDSP (DAC buffer B)
34 (0x22) 0000 0000 Coefficient C81(15:8) of DAC miniDSP (DAC buffer B)
35 (0x23) 0000 0000 Coefficient C81(7:0) of DAC miniDSP (DAC buffer B)
36 (0x24) 0000 0000 Coefficient C82(15:8) of DAC miniDSP (DAC buffer B)
37 (0x25) 0000 0000 Coefficient C82(7:0) of DAC miniDSP (DAC buffer B)
38 (0x26) 0000 0000 Coefficient C83(15:8) of DAC miniDSP (DAC buffer B)
39 (0x27) 0000 0000 Coefficient C83(7:0) of DAC miniDSP (DAC buffer B)
40 (0x28) 0000 0000 Coefficient C84(15:8) of DAC miniDSP (DAC buffer B)
41 (0x29) 0000 0000 Coefficient C84(7:0) of DAC miniDSP (DAC buffer B)
42 (0x2A) 0000 0000 Coefficient C85(15:8) of DAC miniDSP (DAC buffer B)
43 (0x2B) 0000 0000 Coefficient C85(7:0) of DAC miniDSP (DAC buffer B)
44 (0x2C) 0000 0000 Coefficient C86(15:8) of DAC miniDSP (DAC buffer B)
45 (0x2D) 0000 0000 Coefficient C86(7:0) of DAC miniDSP (DAC buffer B)
46 (0x2E) 0000 0000 Coefficient C87(15:8) of DAC miniDSP (DAC buffer B)
47 (0x2F) 0000 0000 Coefficient C87(7:0) of DAC miniDSP (DAC buffer B)
48 (0x30) 0000 0000 Coefficient C88(15:8) of DAC miniDSP (DAC buffer B)
49 (0x31) 0000 0000 Coefficient C88(7:0) of DAC miniDSP (DAC buffer B)
50 (0x32) 0000 0000 Coefficient C89(15:8) of DAC miniDSP (DAC buffer B)
51 (0x33) 0000 0000 Coefficient C89(7:0) of DAC miniDSP (DAC buffer B)
52 (0x34) 0000 0000 Coefficient C90(15:8) of DAC miniDSP (DAC buffer B)
53 (0x35) 0000 0000 Coefficient C90(7:0) of DAC miniDSP (DAC buffer B)
54 (0x36) 0000 0000 Coefficient C91(15:8) of DAC miniDSP (DAC buffer B)
55 (0x37) 0000 0000 Coefficient C91(7:0) of DAC miniDSP (DAC buffer B)
56 (0x38) 0000 0000 Coefficient C92(15:8) of DAC miniDSP (DAC buffer B)
57 (0x39) 0000 0000 Coefficient C92(7:0) of DAC miniDSP (DAC buffer B)
58 (0x3A) 0000 0000 Coefficient C93(15:8) of DAC miniDSP (DAC buffer B)
59 (0x3B) 0000 0000 Coefficient C93(7:0) of DAC miniDSP (DAC buffer B)
60 (0x3C) 0000 0000 Coefficient C94(15:8) of DAC miniDSP (DAC buffer B)
61 (0x3D) 0000 0000 Coefficient C94(7:0) of DAC miniDSP (DAC buffer B)
62 (0x3E) 0000 0000 Coefficient C95(15:8) of DAC miniDSP (DAC buffer B)
63 (0x3F) 0000 0000 Coefficient C95(7:0) of DAC miniDSP (DAC buffer B)
64 (0x40) 0000 0000 Coefficient C96(15:8) of DAC miniDSP (DAC buffer B)
65 (0x41) 0000 0000 Coefficient C96(7:0) of DAC miniDSP (DAC buffer B)
66 (0x42) 0000 0000 Coefficient C97(15:8) of DAC miniDSP (DAC buffer B)
67 (0x43) 0000 0000 Coefficient C97(7:0) of DAC miniDSP (DAC buffer B)
68 (0x44) 0000 0000 Coefficient C98(15:8) of DAC miniDSP (DAC buffer B)
69 (0x45) 0000 0000 Coefficient C98(7:0) of DAC miniDSP (DAC buffer B)
70 (0x46) 0000 0000 Coefficient C99(15:8) of DAC miniDSP (DAC buffer B)
71 (0x47) 0000 0000 Coefficient C99(7:0) of DAC miniDSP (DAC buffer B)
72 (0x48) 0000 0000 Coefficient C100(15:8) of DAC miniDSP (DAC buffer B)
73 (0x49) 0000 0000 Coefficient C100(7:0) of DAC miniDSP (DAC buffer B)
74 (0x4A) 0000 0000 Coefficient C101(15:8) of DAC miniDSP (DAC buffer B)
75 (0x4B) 0000 0000 Coefficient C101(7:0) of DAC miniDSP (DAC buffer B)
76 (0x4C) 0000 0000 Coefficient C102(15:8) of DAC miniDSP (DAC buffer B)
77 (0x4D) 0000 0000 Coefficient C102(7:0) of DAC miniDSP (DAC buffer B)
78 (0x4E) 0000 0000 Coefficient C103(15:8) of DAC miniDSP (DAC buffer B)
79 (0x4F) 0000 0000 Coefficient C103(7:0) of DAC miniDSP (DAC buffer B)
80 (0x50) 0000 0000 Coefficient C104(15:8) of DAC miniDSP (DAC buffer B)
81 (0x51) 0000 0000 Coefficient C104(7:0) of DAC miniDSP (DAC buffer B)
82 (0x52) 0000 0000 Coefficient C105(15:8) of DAC miniDSP (DAC buffer B)
83 (0x53) 0000 0000 Coefficient C105(7:0) of DAC miniDSP (DAC buffer B)
84 (0x54) 0000 0000 Coefficient C106(15:8) of DAC miniDSP (DAC buffer B)
85 (0x55) 0000 0000 Coefficient C106(7:0) of DAC miniDSP (DAC buffer B)
86 (0x56) 0000 0000 Coefficient C107(15:8) of DAC miniDSP (DAC buffer B)
87 (0x57) 0000 0000 Coefficient C107(7:0) of DAC miniDSP (DAC buffer B)
88 (0x58) 0000 0000 Coefficient C108(15:8) of DAC miniDSP (DAC buffer B)
89 (0x59) 0000 0000 Coefficient C108(7:0) of DAC miniDSP (DAC buffer B)
90 (0x5A) 0000 0000 Coefficient C109(15:8) of DAC miniDSP (DAC buffer B)
91 (0x5B) 0000 0000 Coefficient C109(7:0) of DAC miniDSP (DAC buffer B)
92 (0x5C) 0000 0000 Coefficient C110(15:8) of DAC miniDSP (DAC buffer B)
93 (0x5D) 0000 0000 Coefficient C110(7:0) of DAC miniDSP (DAC buffer B)
94 (0x5E) 0000 0000 Coefficient C111(15:8) of DAC miniDSP (DAC buffer B)
95 (0x5F) 0000 0000 Coefficient C111(7:0) of DAC miniDSP (DAC buffer B)
96 (0x60) 0000 0000 Coefficient C112(15:8) of DAC miniDSP (DAC buffer B)
97 (0x61) 0000 0000 Coefficient C112(7:0) of DAC miniDSP (DAC buffer B)
98 (0x62) 0000 0000 Coefficient C113(15:8) of DAC miniDSP (DAC buffer B)
99 (0x63) 0000 0000 Coefficient C113(7:0) of DAC miniDSP (DAC buffer B)
100 (0x64) 0000 0000 Coefficient C114(15:8) of DAC miniDSP (DAC buffer B)
101 (0x65) 0000 0000 Coefficient C114(7:0) of DAC miniDSP (DAC buffer B)
102 (0x66) 0000 0000 Coefficient C115(15:8) of DAC miniDSP (DAC buffer B)
103 (0x67) 0000 0000 Coefficient C116(7:0) of DAC miniDSP (DAC buffer B)
104 (0x68) 0000 0000 Coefficient C117(15:8) of DAC miniDSP (DAC buffer B)
105 (0x69) 0000 0000 Coefficient C117(7:0) of DAC miniDSP (DAC buffer B)
106 (0x6A) 0000 0000 Coefficient C118(15:8) of DAC miniDSP (DAC buffer B)
107 (0x6B) 0000 0000 Coefficient C118(7:0) of DAC miniDSP (DAC buffer B)
108 (0x6C) 0000 0000 Coefficient C119(15:8) of DAC miniDSP (DAC buffer B)
109 (0x6D) 0000 0000 Coefficient C119(7:0) of DAC miniDSP (DAC buffer B)
110 (0x6E) 0000 0000 Coefficient C120(15:8) of DAC miniDSP (DAC buffer B)
111 (0x6F) 0000 0000 Coefficient C120(7:0) of DAC miniDSP (DAC buffer B)
112 (0x70) 0000 0000 Coefficient C121(15:8) of DAC miniDSP (DAC buffer B)
113 (0x71) 0000 0000 Coefficient C121(7:0) of DAC miniDSP (DAC buffer B)
114 (0x72) 0000 0000 Coefficient C122(15:8) of DAC miniDSP (DAC buffer B)
115 (0x73) 0000 0000 Coefficient C122(7:0) of DAC miniDSP (DAC buffer B)
116 (0x74) 0000 0000 Coefficient C123(15:8) of DAC miniDSP (DAC buffer B)
117 (0x75) 0000 0000 Coefficient C123(7:0) of DAC miniDSP (DAC buffer B)
118 (0x76) 0000 0000 Coefficient C123(15:8) of DAC miniDSP (DAC buffer B)
119 (0x77) 0000 0000 Coefficient C123(7:0) of DAC miniDSP (DAC buffer B)
120 (0x78) 0000 0000 Coefficient C124(15:8) of DAC miniDSP (DAC buffer B)
121 (0x79) 0000 0000 Coefficient C124(7:0) of DAC miniDSP (DAC buffer B)
122 (0x7A) 0000 0000 Coefficient C125(15:8) of DAC miniDSP (DAC buffer B)
123 (0x7B) 0000 0000 Coefficient C125(7:0) of DAC miniDSP (DAC buffer B)
124 (0x7C) 0000 0000 Coefficient C126(15:8) of DAC miniDSP (DAC buffer B)
125 (0x7D) 0000 0000 Coefficient C126(7:0) of DAC miniDSP (DAC buffer B)
126 (0x7E) 0000 0000 Coefficient C127(15:8) of DAC miniDSP (DAC buffer B)
127 (0x7F) 0000 0000 Coefficient C127(7:0) of DAC miniDSP (DAC buffer B)

Control Registers, Page 14: DAC Programmable Coefficients RAM Buffer B (129:191)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-6 Page 14 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-14 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers must not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register must always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers must be written in this sequence. Table 7-172 is a list of the page-14 registers, excepting the previously described register 0.

Table 7-172 Page-14 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) XXXX XXXX Reserved. Do not write to this register.
 2 (0x02) 0000 0000 Coefficient C129(15:8) of DAC miniDSP (DAC buffer B)
 3 (0x03) 0000 0000 Coefficient C129(7:0) of DAC miniDSP (DAC buffer B)
 4 (0x04) 0000 0000 Coefficient C130(15:8) of DAC miniDSP (DAC buffer B)
 5 (0x05) 0000 0000 Coefficient C130(7:0) of DAC miniDSP (DAC buffer B)
 6 (0x06) 0000 0000 Coefficient C131(15:8) of DAC miniDSP (DAC buffer B)
 7 (0x07) 0000 0000 Coefficient C131(7:0) of DAC miniDSP (DAC buffer B)
 8 (0x08) 0000 0000 Coefficient C132(15:8) of DAC miniDSP (DAC buffer B)
 9 (0x09) 0000 0000 Coefficient C132(7:0) of DAC miniDSP (DAC buffer B)
10 (0x0A) 0000 0000 Coefficient C133(15:8) of DAC miniDSP (DAC buffer B)
11 (0x0B) 0000 0000 Coefficient C133(7:0) of DAC miniDSP (DAC buffer B)
12 (0x0C) 0000 0000 Coefficient C134(15:8) of DAC miniDSP (DAC buffer B)
13 (0x0D) 0000 0000 Coefficient C134(7:0) of DAC miniDSP (DAC buffer B)
14 (0x0E) 0000 0000 Coefficient C135(15:8) of DAC miniDSP (DAC buffer B)
15 (0x0F) 0000 0000 Coefficient C135(7:0) of DAC miniDSP (DAC buffer B)
16 (0x10) 0000 0000 Coefficient C136(15:8) of DAC miniDSP (DAC buffer B)
17 (0x11) 0000 0000 Coefficient C136(7:0) of DAC miniDSP (DAC buffer B)
18 (0x12) 0000 0000 Coefficient C137(15:8) of DAC miniDSP (DAC buffer B)
19 (0x13) 0000 0000 Coefficient C137(7:0) of DAC miniDSP (DAC buffer B)
20 (0x14) 0000 0000 Coefficient C138(15:8) of DAC miniDSP (DAC buffer B)
21 (0x15) 0000 0000 Coefficient C138(7:0) of DAC miniDSP (DAC buffer B)
22 (0x16) 0000 0000 Coefficient C139(15:8) of DAC miniDSP (DAC buffer B)
23 (0x17) 0000 0000 Coefficient C139(7:0) of DAC miniDSP (DAC buffer B)
24 (0x18) 0000 0000 Coefficient C140(15:8) of DAC miniDSP (DAC buffer B)
25 (0x19) 0000 0000 Coefficient C140(7:0) of DAC miniDSP (DAC buffer B)
26 (0x1A) 0000 0000 Coefficient C141(15:8) of DAC miniDSP (DAC buffer B)
27 (0x1B) 0000 0000 Coefficient C141(7:0) of DAC miniDSP (DAC buffer B)
28 (0x1C) 0000 0000 Coefficient C142(15:8) of DAC miniDSP (DAC buffer B)
29 (0x1D) 0000 0000 Coefficient C142(7:0) of DAC miniDSP (DAC buffer B)
30 (0x1E) 0000 0000 Coefficient C143(15:8) of DAC miniDSP (DAC buffer B)
31 (0x1F) 0000 0000 Coefficient C143(7:0) of DAC miniDSP (DAC buffer B)
32 (0x20) 0000 0000 Coefficient C144(15:8) of DAC miniDSP (DAC buffer B)
33 (0x21) 0000 0000 Coefficient C144(7:0) of DAC miniDSP (DAC buffer B)
34 (0x22) 0000 0000 Coefficient C145(15:8) of DAC miniDSP (DAC buffer B)
35 (0x23) 0000 0000 Coefficient C145(7:0) of DAC miniDSP (DAC buffer B)
36 (0x24) 0000 0000 Coefficient C146(15:8) of DAC miniDSP (DAC buffer B)
37 (0x25) 0000 0000 Coefficient C146(7:0) of DAC miniDSP (DAC buffer B)
38 (0x26) 0000 0000 Coefficient C147(15:8) of DAC miniDSP (DAC buffer B)
39 (0x27) 0000 0000 Coefficient C147(7:0) of DAC miniDSP (DAC buffer B)
40 (0x28) 0000 0000 Coefficient C148(15:8) of DAC miniDSP (DAC buffer B)
41 (0x29) 0000 0000 Coefficient C148(7:0) of DAC miniDSP (DAC buffer B)
42 (0x2A) 0000 0000 Coefficient C149(15:8) of DAC miniDSP (DAC buffer B)
43 (0x2B) 0000 0000 Coefficient C149(7:0) of DAC miniDSP (DAC buffer B)
44 (0x2C) 0000 0000 Coefficient C150(15:8) of DAC miniDSP (DAC buffer B)
45 (0x2D) 0000 0000 Coefficient C150(7:0) of DAC miniDSP (DAC buffer B)
46 (0x2E) 0000 0000 Coefficient C151(15:8) of DAC miniDSP (DAC buffer B)
47 (0x2F) 0000 0000 Coefficient C151(7:0) of DAC miniDSP (DAC buffer B)
48 (0x30) 0000 0000 Coefficient C152(15:8) of DAC miniDSP (DAC buffer B)
49 (0x31) 0000 0000 Coefficient C152(7:0) of DAC miniDSP (DAC buffer B)
50 (0x32) 0000 0000 Coefficient C153(15:8) of DAC miniDSP (DAC buffer B)
51 (0x33) 0000 0000 Coefficient C153(7:0) of DAC miniDSP (DAC buffer B)
52 (0x34) 0000 0000 Coefficient C154(15:8) of DAC miniDSP (DAC buffer B)
53 (0x35) 0000 0000 Coefficient C154(7:0) of DAC miniDSP (DAC buffer B)
54 (0x36) 0000 0000 Coefficient C155(15:8) of DAC miniDSP (DAC buffer B)
55 (0x37) 0000 0000 Coefficient C155(7:0) of DAC miniDSP (DAC buffer B)
56 (0x38) 0000 0000 Coefficient C156(15:8) of DAC miniDSP (DAC buffer B)
57 (0x39) 0000 0000 Coefficient C156(7:0) of DAC miniDSP (DAC buffer B)
58 (0x3A) 0000 0000 Coefficient C157(15:8) of DAC miniDSP (DAC buffer B)
59 (0x3B) 0000 0000 Coefficient C157(7:0) of DAC miniDSP (DAC buffer B)
60 (0x3C) 0000 0000 Coefficient C158(15:8) of DAC miniDSP (DAC buffer B)
61 (0x3D) 0000 0000 Coefficient C158(7:0) of DAC miniDSP (DAC buffer B)
62 (0x3E) 0000 0000 Coefficient C159(15:8) of DAC miniDSP (DAC buffer B)
63 (0x3F) 0000 0000 Coefficient C159(7:0) of DAC miniDSP (DAC buffer B)
64 (0x40) 0000 0000 Coefficient C160(15:8) of DAC miniDSP (DAC buffer B)
65 (0x41) 0000 0000 Coefficient C160(7:0) of DAC miniDSP (DAC buffer B)
66 (0x42) 0000 0000 Coefficient C161(15:8) of DAC miniDSP (DAC buffer B)
67 (0x43) 0000 0000 Coefficient C161(7:0) of DAC miniDSP (DAC buffer B)
68 (0x44) 0000 0000 Coefficient C162(15:8) of DAC miniDSP (DAC buffer B)
69 (0x45) 0000 0000 Coefficient C162(7:0) of DAC miniDSP (DAC buffer B)
70 (0x46) 0000 0000 Coefficient C163(15:8) of DAC miniDSP (DAC buffer B)
71 (0x47) 0000 0000 Coefficient C163(7:0) of DAC miniDSP (DAC buffer B)
72 (0x48) 0000 0000 Coefficient C164(15:8) of DAC miniDSP (DAC buffer B)
73 (0x49) 0000 0000 Coefficient C164(7:0) of DAC miniDSP (DAC buffer B)
74 (0x4A) 0000 0000 Coefficient C165(15:8) of DAC miniDSP (DAC buffer B)
75 (0x4B) 0000 0000 Coefficient C165(7:0) of DAC miniDSP (DAC buffer B)
76 (0x4C) 0000 0000 Coefficient C166(15:8) of DAC miniDSP (DAC buffer B)
77 (0x4D) 0000 0000 Coefficient C166(7:0) of DAC miniDSP (DAC buffer B)
78 (0x4E) 0000 0000 Coefficient C167(15:8) of DAC miniDSP (DAC buffer B)
79 (0x4F) 0000 0000 Coefficient C167(7:0) of DAC miniDSP (DAC buffer B)
80 (0x50) 0000 0000 Coefficient C168(15:8) of DAC miniDSP (DAC buffer B)
81 (0x51) 0000 0000 Coefficient C168(7:0) of DAC miniDSP (DAC buffer B)
82 (0x52) 0000 0000 Coefficient C169(15:8) of DAC miniDSP (DAC buffer B)
83 (0x53) 0000 0000 Coefficient C169(7:0) of DAC miniDSP (DAC buffer B)
84 (0x54) 0000 0000 Coefficient C170(15:8) of DAC miniDSP (DAC buffer B)
85 (0x55) 0000 0000 Coefficient C170(7:0) of DAC miniDSP (DAC buffer B)
86 (0x56) 0000 0000 Coefficient C171(15:8) of DAC miniDSP (DAC buffer B)
87 (0x57) 0000 0000 Coefficient C171(7:0) of DAC miniDSP (DAC buffer B)
88 (0x58) 0000 0000 Coefficient C172(15:8) of DAC miniDSP (DAC buffer B)
89 (0x59) 0000 0000 Coefficient C172(7:0) of DAC miniDSP (DAC buffer B)
90 (0x5A) 0000 0000 Coefficient C173(15:8) of DAC miniDSP (DAC buffer B)
91 (0x5B) 0000 0000 Coefficient C173(7:0) of DAC miniDSP (DAC buffer B)
92 (0x5C) 0000 0000 Coefficient C174(15:8) of DAC miniDSP (DAC buffer B)
93 (0x5D) 0000 0000 Coefficient C174(7:0) of DAC miniDSP (DAC buffer B)
94 (0x5E) 0000 0000 Coefficient C175(15:8) of DAC miniDSP (DAC buffer B)
95 (0x5F) 0000 0000 Coefficient C175(7:0) of DAC miniDSP (DAC buffer B)
96 (0x60) 0000 0000 Coefficient C176(15:8) of DAC miniDSP (DAC buffer B)
97 (0x61) 0000 0000 Coefficient C176(7:0) of DAC miniDSP (DAC buffer B)
98 (0x62) 0000 0000 Coefficient C177(15:8) of DAC miniDSP (DAC buffer B)
99 (0x63) 0000 0000 Coefficient C177(7:0) of DAC miniDSP (DAC buffer B)
100 (0x64) 0000 0000 Coefficient C178(15:8) of DAC miniDSP (DAC buffer B)
101 (0x65) 0000 0000 Coefficient C178(7:0) of DAC miniDSP (DAC buffer B)
102 (0x66) 0000 0000 Coefficient C179(15:8) of DAC miniDSP (DAC buffer B)
103 (0x67) 0000 0000 Coefficient C179(7:0) of DAC miniDSP (DAC buffer B)
104 (0x68) 0000 0000 Coefficient C180(15:8) of DAC miniDSP (DAC buffer B)
105 (0x69) 0000 0000 Coefficient C180(7:0) of DAC miniDSP (DAC buffer B)
106 (0x6A) 0000 0000 Coefficient C181(15:8) of DAC miniDSP (DAC buffer B)
107 (0x6B) 0000 0000 Coefficient C181(7:0) of DAC miniDSP (DAC buffer B)
108 (0x6C) 0000 0000 Coefficient C182(15:8) of DAC miniDSP (DAC buffer B)
109 (0x6D) 0000 0000 Coefficient C182(7:0) of DAC miniDSP (DAC buffer B)
110 (0x6E) 0000 0000 Coefficient C183(15:8) of DAC miniDSP (DAC buffer B)
111 (0x6F) 0000 0000 Coefficient C183(7:0) of DAC miniDSP (DAC buffer B)
112 (0x70) 0000 0000 Coefficient C184(15:8) of DAC miniDSP (DAC buffer B)
113 (0x71) 0000 0000 Coefficient C184(7:0) of DAC miniDSP (DAC buffer B)
114 (0x72) 0000 0000 Coefficient C185(15:8) of DAC miniDSP (DAC buffer B)
115 (0x73) 0000 0000 Coefficient C185(7:0) of DAC miniDSP (DAC buffer B)
116 (0x74) 0000 0000 Coefficient C186(15:8) of DAC miniDSP (DAC buffer B)
117 (0x75) 0000 0000 Coefficient C186(7:0) of DAC miniDSP (DAC buffer B)
118 (0x76) 0000 0000 Coefficient C187(15:8) of DAC miniDSP (DAC buffer B)
119 (0x77) 0000 0000 Coefficient C187(7:0) of DAC miniDSP (DAC buffer B)
120 (0x78) 0000 0000 Coefficient C188(15:8) of DAC miniDSP (DAC buffer B)
121 (0x79) 0000 0000 Coefficient C188(7:0) of DAC miniDSP (DAC buffer B)
122 (0x7A) 0000 0000 Coefficient C189(15:8) of DAC miniDSP (DAC buffer B)
123 (0x7B) 0000 0000 Coefficient C189(7:0) of DAC miniDSP (DAC buffer B)
124 (0x7C) 0000 0000 Coefficient C190(15:8) of DAC miniDSP (DAC buffer B)
125 (0x7D) 0000 0000 Coefficient C190(7:0) of DAC miniDSP (DAC buffer B)
126 (0x7E) 0000 0000 Coefficient C191(15:8) of DAC miniDSP (DAC buffer B)
127 (0x7F) 0000 0000 Coefficient C191(7:0) of DAC miniDSP (DAC buffer B)

Control Registers, Page 15: DAC Programmable Coefficients RAM Buffer B (193:255)

Default values shown for this page only become valid 100 μs following a hardware or software reset.

Table 7-7 Page 15 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

The remaining page-15 registers are either reserved registers or are used for setting coefficients for the various filters in the TLV320AIC3120. Reserved registers must not be written to.

The filter coefficient registers are arranged in pairs, with two adjacent 8-bit registers containing the 16-bit coefficient for a single filter. The 16-bit integer contained in the MSB and LSB registers for a coefficient are interpreted as a 2s-complement integer, with possible values ranging from –32 768 to 32 767. When programming any coefficient value for a filter, the MSB register must always be written first, immediately followed by the LSB register. Even if only the MSB or LSB portion of the coefficient changes, both registers must be written in this sequence. Table 7-173 is a list of the page-15 registers, excepting the previously described register 0.

Table 7-173 Page-15 Registers

REGISTER NUMBER RESET VALUE REGISTER NAME
 1 (0x01) XXXX XXXX Reserved. Do not write to this register.
 2 (0x02) 0000 0000 Coefficient C193(15:8) of DAC miniDSP (DAC buffer B)
 3 (0x03) 0000 0000 Coefficient C193(7:0) of DAC miniDSP (DAC buffer B)
 4 (0x04) 0000 0000 Coefficient C194(15:8) of DAC miniDSP (DAC buffer B)
 5 (0x05) 0000 0000 Coefficient C194(7:0) of DAC miniDSP (DAC buffer B)
 6 (0x06) 0000 0000 Coefficient C195(15:8) of DAC miniDSP (DAC buffer B)
 7 (0x07) 0000 0000 Coefficient C195(7:0) of DAC miniDSP (DAC buffer B)
 8 (0x08) 0000 0000 Coefficient C196(15:8) of DAC miniDSP (DAC buffer B)
 9 (0x09) 0000 0000 Coefficient C196(7:0) of DAC miniDSP (DAC buffer B)
10 (0x0A) 0000 0000 Coefficient C197(15:8) of DAC miniDSP (DAC buffer B)
11 (0x0B) 0000 0000 Coefficient C197(7:0) of DAC miniDSP (DAC buffer B)
12 (0x0C) 0000 0000 Coefficient C198(15:8) of DAC miniDSP (DAC buffer B)
13 (0x0D) 0000 0000 Coefficient C198(7:0) of DAC miniDSP (DAC buffer B)
14 (0x0E) 0000 0000 Coefficient C199(15:8) of DAC miniDSP (DAC buffer B)
15 (0x0F) 0000 0000 Coefficient C199(7:0) of DAC miniDSP (DAC buffer B)
16 (0x10) 0000 0000 Coefficient C200(15:8) of DAC miniDSP (DAC buffer B)
17 (0x11) 0000 0000 Coefficient C200(7:0) of DAC miniDSP (DAC buffer B)
18 (0x12) 0000 0000 Coefficient C201(15:8) of DAC miniDSP (DAC buffer B)
19 (0x13) 0000 0000 Coefficient C201(7:0) of DAC miniDSP (DAC buffer B)
20 (0x14) 0000 0000 Coefficient C202(15:8) of DAC miniDSP (DAC buffer B)
21 (0x15) 0000 0000 Coefficient C202(7:0) of DAC miniDSP (DAC buffer B)
22 (0x16) 0000 0000 Coefficient C203(15:8) of DAC miniDSP (DAC buffer B)
23 (0x17) 0000 0000 Coefficient C203(7:0) of DAC miniDSP (DAC buffer B)
24 (0x18) 0000 0000 Coefficient C204(15:8) of DAC miniDSP (DAC buffer B)
25 (0x19) 0000 0000 Coefficient C204(7:0) of DAC miniDSP (DAC buffer B)
26 (0x1A) 0000 0000 Coefficient C205(15:8) of DAC miniDSP (DAC buffer B)
27 (0x1B) 0000 0000 Coefficient C205(7:0) of DAC miniDSP (DAC buffer B)
28 (0x1C) 0000 0000 Coefficient C206(15:8) of DAC miniDSP (DAC buffer B)
29 (0x1D) 0000 0000 Coefficient C206(7:0) of DAC miniDSP (DAC buffer B)
30 (0x1E) 0000 0000 Coefficient C207(15:8) of DAC miniDSP (DAC buffer B)
31 (0x1F) 0000 0000 Coefficient C207(7:0) of DAC miniDSP (DAC buffer B)
32 (0x20) 0000 0000 Coefficient C208(15:8) of DAC miniDSP (DAC buffer B)
33 (0x21) 0000 0000 Coefficient C208(7:0) of DAC miniDSP (DAC buffer B)
34 (0x22) 0000 0000 Coefficient C209(15:8) of DAC miniDSP (DAC buffer B)
35 (0x23) 0000 0000 Coefficient C209(7:0) of DAC miniDSP (DAC buffer B)
36 (0x24) 0000 0000 Coefficient C210(15:8) of DAC miniDSP (DAC buffer B)
37 (0x25) 0000 0000 Coefficient C210(7:0) of DAC miniDSP (DAC buffer B)
38 (0x26) 0000 0000 Coefficient C211(15:8) of DAC miniDSP (DAC buffer B)
39 (0x27) 0000 0000 Coefficient C211(7:0) of DAC miniDSP (DAC buffer B)
40 (0x28) 0000 0000 Coefficient C212(15:8) of DAC miniDSP (DAC buffer B)
41 (0x29) 0000 0000 Coefficient C212(7:0) of DAC miniDSP (DAC buffer B)
42 (0x2A) 0000 0000 Coefficient C213(15:8) of DAC miniDSP (DAC buffer B)
43 (0x2B) 0000 0000 Coefficient C213(7:0) of DAC miniDSP (DAC buffer B)
44 (0x2C) 0000 0000 Coefficient C214(15:8) of DAC miniDSP (DAC buffer B)
45 (0x2D) 0000 0000 Coefficient C214(7:0) of DAC miniDSP (DAC buffer B)
46 (0x2E) 0000 0000 Coefficient C215(15:8) of DAC miniDSP (DAC buffer B)
47 (0x2F) 0000 0000 Coefficient C215(7:0) of DAC miniDSP (DAC buffer B)
48 (0x30) 0000 0000 Coefficient C216(15:8) of DAC miniDSP (DAC buffer B)
49 (0x31) 0000 0000 Coefficient C216(7:0) of DAC miniDSP (DAC buffer B)
50 (0x32) 0000 0000 Coefficient C217(15:8) of DAC miniDSP (DAC buffer B)
51 (0x33) 0000 0000 Coefficient C217(7:0) of DAC miniDSP (DAC buffer B)
52 (0x34) 0000 0000 Coefficient C218(15:8) of DAC miniDSP (DAC buffer B)
53 (0x35) 0000 0000 Coefficient C218(7:0) of DAC miniDSP (DAC buffer B)
54 (0x36) 0000 0000 Coefficient C219(15:8) of DAC miniDSP (DAC buffer B)
55 (0x37) 0000 0000 Coefficient C219(7:0) of DAC miniDSP (DAC buffer B)
56 (0x38) 0000 0000 Coefficient C220(15:8) of DAC miniDSP (DAC buffer B)
57 (0x39) 0000 0000 Coefficient C220(7:0) of DAC miniDSP (DAC buffer B)
58 (0x3A) 0000 0000 Coefficient C221(15:8) of DAC miniDSP (DAC buffer B)
59 (0x3B) 0000 0000 Coefficient C221(7:0) of DAC miniDSP (DAC buffer B)
60 (0x3C) 0000 0000 Coefficient C222(15:8) of DAC miniDSP (DAC buffer B)
61 (0x3D) 0000 0000 Coefficient C222(7:0) of DAC miniDSP (DAC buffer B)
62 (0x3E) 0000 0000 Coefficient C223(15:8) of DAC miniDSP (DAC buffer B)
63 (0x3F) 0000 0000 Coefficient C223(7:0) of DAC miniDSP (DAC buffer B)
64 (0x40) 0000 0000 Coefficient C224(15:8) of DAC miniDSP (DAC buffer B)
65 (0x41) 0000 0000 Coefficient C224(7:0) of DAC miniDSP (DAC buffer B)
66 (0x42) 0000 0000 Coefficient C225(15:8) of DAC miniDSP (DAC buffer B)
67 (0x43) 0000 0000 Coefficient C225(7:0) of DAC miniDSP (DAC buffer B)
68 (0x44) 0000 0000 Coefficient C226(15:8) of DAC miniDSP (DAC buffer B)
69 (0x45) 0000 0000 Coefficient C226(7:0) of DAC miniDSP (DAC buffer B)
70 (0x46) 0000 0000 Coefficient C227(15:8) of DAC miniDSP (DAC buffer B)
71 (0x47) 0000 0000 Coefficient C227(7:0) of DAC miniDSP (DAC buffer B)
72 (0x48) 0000 0000 Coefficient C228(15:8) of DAC miniDSP (DAC buffer B)
73 (0x49) 0000 0000 Coefficient C228(7:0) of DAC miniDSP (DAC buffer B)
74 (0x4A) 0000 0000 Coefficient C229(15:8) of DAC miniDSP (DAC buffer B)
75 (0x4B) 0000 0000 Coefficient C229(7:0) of DAC miniDSP (DAC buffer B)
76 (0x4C) 0000 0000 Coefficient C230(15:8) of DAC miniDSP (DAC buffer B)
77 (0x4D) 0000 0000 Coefficient C230(7:0) of DAC miniDSP (DAC buffer B)
78 (0x4E) 0000 0000 Coefficient C231(15:8) of DAC miniDSP (DAC buffer B)
79 (0x4F) 0000 0000 Coefficient C231(7:0) of DAC miniDSP (DAC buffer B)
80 (0x50) 0000 0000 Coefficient C232(15:8) of DAC miniDSP (DAC buffer B)
81 (0x51) 0000 0000 Coefficient C232(7:0) of DAC miniDSP (DAC buffer B)
82 (0x52) 0000 0000 Coefficient C233(15:8) of DAC miniDSP (DAC buffer B)
83 (0x53) 0000 0000 Coefficient C233(7:0) of DAC miniDSP (DAC buffer B)
84 (0x54) 0000 0000 Coefficient C234(15:8) of DAC miniDSP (DAC buffer B)
85 (0x55) 0000 0000 Coefficient C234(7:0) of DAC miniDSP (DAC buffer B)
86 (0x56) 0000 0000 Coefficient C235(15:8) of DAC miniDSP (DAC buffer B)
87 (0x57) 0000 0000 Coefficient C235(7:0) of DAC miniDSP (DAC buffer B)
88 (0x58) 0000 0000 Coefficient C236(15:8) of DAC miniDSP (DAC buffer B)
89 (0x59) 0000 0000 Coefficient C236(7:0) of DAC miniDSP (DAC buffer B)
90 (0x5A) 0000 0000 Coefficient C237(15:8) of DAC miniDSP (DAC buffer B)
91 (0x5B) 0000 0000 Coefficient C237(7:0) of DAC miniDSP (DAC buffer B)
92 (0x5C) 0000 0000 Coefficient C238(15:8) of DAC miniDSP (DAC buffer B)
93 (0x5D) 0000 0000 Coefficient C238(7:0) of DAC miniDSP (DAC buffer B)
94 (0x5E) 0000 0000 Coefficient C239(15:8) of DAC miniDSP (DAC buffer B)
95 (0x5F) 0000 0000 Coefficient C239(7:0) of DAC miniDSP (DAC buffer B)
96 (0x60) 0000 0000 Coefficient C240(15:8) of DAC miniDSP (DAC buffer B)
97 (0x61) 0000 0000 Coefficient C240(7:0) of DAC miniDSP (DAC buffer B)
98 (0x62) 0000 0000 Coefficient C241(15:8) of DAC miniDSP (DAC buffer B)
99 (0x63) 0000 0000 Coefficient C241(7:0) of DAC miniDSP (DAC buffer B)
100 (0x64) 0000 0000 Coefficient C242(15:8) of DAC miniDSP (DAC buffer B)
101 (0x65) 0000 0000 Coefficient C242(7:0) of DAC miniDSP (DAC buffer B)
102 (0x66) 0000 0000 Coefficient C243(15:8) of DAC miniDSP (DAC buffer B)
103 (0x67) 0000 0000 Coefficient C243(7:0) of DAC miniDSP (DAC buffer B)
104 (0x68) 0000 0000 Coefficient C244(15:8) of DAC miniDSP (DAC buffer B)
105 (0x69) 0000 0000 Coefficient C244(7:0) of DAC miniDSP (DAC buffer B)
106 (0x6A) 0000 0000 Coefficient C245(15:8) of DAC miniDSP (DAC buffer B)
107 (0x6B) 0000 0000 Coefficient C245(7:0) of DAC miniDSP (DAC buffer B)
108 (0x6C) 0000 0000 Coefficient C246(15:8) of DAC miniDSP (DAC buffer B)
109 (0x6D) 0000 0000 Coefficient C246(7:0) of DAC miniDSP (DAC buffer B)
110 (0x6E) 0000 0000 Coefficient C247(15:8) of DAC miniDSP (DAC buffer B)
111 (0x6F) 0000 0000 Coefficient C247(7:0) of DAC miniDSP (DAC buffer B)
112 (0x70) 0000 0000 Coefficient C248(15:8) of DAC miniDSP (DAC buffer B)
113 (0x71) 0000 0000 Coefficient C248(7:0) of DAC miniDSP (DAC buffer B)
114 (0x72) 0000 0000 Coefficient C249(15:8) of DAC miniDSP (DAC buffer B)
115 (0x73) 0000 0000 Coefficient C249(7:0) of DAC miniDSP (DAC buffer B)
116 (0x74) 0000 0000 Coefficient C250(15:8) of DAC miniDSP (DAC buffer B)
117 (0x75) 0000 0000 Coefficient C250(7:0) of DAC miniDSP (DAC buffer B)
118 (0x76) 0000 0000 Coefficient C251(15:8) of DAC miniDSP (DAC buffer B)
119 (0x77) 0000 0000 Coefficient C251(7:0) of DAC miniDSP (DAC buffer B)
120 (0x78) 0000 0000 Coefficient C252(15:8) of DAC miniDSP (DAC buffer B)
121 (0x79) 0000 0000 Coefficient C252(7:0) of DAC miniDSP (DAC buffer B)
122 (0x7A) 0000 0000 Coefficient C253(15:8) of DAC miniDSP (DAC buffer B)
123 (0x7B) 0000 0000 Coefficient C253(7:0) of DAC miniDSP (DAC buffer B)
124 (0x7C) 0000 0000 Coefficient C254(15:8) of DAC miniDSP (DAC buffer B)
125 (0x7D) 0000 0000 Coefficient C254(7:0) of DAC miniDSP (DAC buffer B)
126 (0x7E) 0000 0000 Coefficient C255(15:8) of DAC miniDSP (DAC buffer B)
127 (0x7F) 0000 0000 Coefficient C255(7:0) of DAC miniDSP (DAC buffer B)

Control Registers, Page 32: ADC DSP Engine Instruction RAM (0:31)

Table 7-8 Page 32 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

Table 7-9 Page 32 / Register 1 (0x01): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only the default value to this register

Table 7-10 Page 32 / Register 2 (0x02): Inst_0(19:16)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D4 R/W XXXX Reserved
D3–D0 R/W XXXX Instruction Inst_0(19:16) of ADC miniDSP

Table 7-11 Page 32 / Register 3 (0x03) : Inst_0(15:8)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Instruction Inst_0(15:8) of ADC miniDSP

Table 7-12 Page 32 / Register 4 (0x04): Inst_0(7:0)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Instruction Inst_0(7:0) of ADC miniDSP

Page 32 / Register 5 (0x05) Through Page 32 / Register 97 (0x61)

The remaining unreserved registers on page 32 are arranged in groups of three, with each group containing the bits of one instruction. The arrangement is the same as that of registers 2–4 for Instruction 0. Registers 5–7, 8–10, 11–13, ..., 95–97 contain instructions 1, 2, 3, ..., 31, respectively.

Table 7-13 Page 32 / Register 98 (0x62) Through Page 32 / Register 127 (0x7F): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only the default value to this register

Control Registers, Pages 33–43: ADC DSP Engine Instruction RAM (32:63) Through (352:383)

The structuring of the registers within pages 33–43 is identical to that of page 32. Only the instruction numbers differ. The range of instructions within each page is listed in the following table.

Page Instructions
33 32 to 63
34 64 to 95
35 96 to 127
36 128 to 159
37 160 to 191
38 192 to 223
39 224 to 255
40 256 to 287
41 288 to 319
42 320 to 351
43 352 to 383

Control Registers, Page 64: DAC DSP Engine Instruction RAM (0:31)

Table 7-14 Page 64 / Register 0 (0x00): Page Control Register

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W 0000 0000 0000 0000: Page 0 selected
0000 0001: Page 1 selected
...
1111 1110: Page 254 selected
1111 1111: Page 255 selected

Table 7-15 Page 64 / Register 1 (0x01): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only the default value to this register

Table 7-16 Page 64 / Register 2 (0x02): Inst_0(23:16)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX Instruction Inst_0(23:16) of DAC miniDSP

Table 7-17 Page 64 / Register 3 (0x03): Inst_0(15:8)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Instruction Inst_0(15:8) of DAC miniDSP

Table 7-18 Page 64 / Register 4 (0x04): Inst_0(7:0)

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Instruction Inst_0(7:0) of DAC miniDSP

Page 64 / Register 5 Through Page 64 / Register 97

The remaining unreserved registers on page 64 are arranged in groups of three, with each group containing the bits of one instruction. The arrangement is the same as that of registers 2 to 4 for Instruction 0. Registers 5 to 7, 8 to 10, 11 to 13, ..., 95 to 97 contain instructions 1, 2, 3, ..., 31, respectively.

Table 7-19 Page 64 / Register 98 (0x62) Through Page 64 / Register 127 (0x7F): Reserved

BIT READ/
WRITE
RESET
VALUE
DESCRIPTION
D7–D0 R/W XXXX XXXX Reserved. Write only the default value to these registers.

Control Registers, Pages 65 to 95: DAC DSP Engine Instruction RAM (32:63) Through (992:1023)

The structuring of the registers within pages 65 to 95 is identical to that of page 64. Only the instruction numbers differ. The range of instructions within each page is listed in the following table.

Page Instructions
65 32 to 63
66 64 to 95
67 96 to 127
68 128 to 159
69 160 to 191
70 192 to 223
71 224 to 255
72 256 to 287
73 288 to 319
74 320 to 351
75 352 to 383
76 384 to 415
77 416 to 447
78 448 to 479
79 480 to 511
80 512 to 543
81 544 to 575
82 576 to 607
83 608 to 639
84 640 to 671
85 672 to 703
86 704 to 735
87 736 to 767
88 768 to 799
89 800 to 831
90 832 to 863
91 864 to 895
92 896 to 927
93 928 to 959
94 960 to 991
95 992 to 1023