SNLS348E October   2011  – January 2015 DS100BR210

PRODUCTION DATA.  

  1. Features
  2. Applications
  3. Description
  4. Simplified Schematic
  5. Revision History
  6. Pin Configuration and Functions
  7. Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Electrical Characteristics — Serial Management Bus Interface
    7. 7.7 Timing Requirements — LOS and ENABLE / DISABLE Timing
    8. 7.8 Typical Characteristics
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 4-Level Input Configuration Guidelines
      2. 8.3.2 Typical 4-Level Input Thresholds
    4. 8.4 Device Functional Modes
      1. 8.4.1 Pin Control Mode
      2. 8.4.2 SMBus Slave Mode
      3. 8.4.3 SMBus Master Mode
      4. 8.4.4 Signal Conditioning Settings
    5. 8.5 Programming
      1. 8.5.1 System Management Bus (SMBus) and Configuration Registers
      2. 8.5.2 Transfer Of Data Via the SMBus
      3. 8.5.3 SMBus Transactions
      4. 8.5.4 Writing a Register
      5. 8.5.5 Reading a Register
      6. 8.5.6 EEPROM Programming
        1. 8.5.6.1 Master EEPROM Programming
        2. 8.5.6.2 EEPROM Address Mapping
    6. 8.6 Register Maps
  9. Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Signal Integrity in 10G-KR Applications
      2. 9.1.2 OOB (Out-of-Band) Functionality in SAS/SATA Applications
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Performance Plots
        1. 9.2.3.1 Equalization Results (Pre-Channel Only)
        2. 9.2.3.2 Equalization and De-Emphasis Results (Pre-channel and Post-channel, No Tx Source De-emphasis)
        3. 9.2.3.3 Equalization and De-Emphasis Results (Pre-channel and Post-channel, -6 dB Tx Source De-emphasis)
  10. 10Power Supply Recommendations
    1. 10.1 3.3-V or 2.5-V Supply Mode Operation
    2. 10.2 Power Supply Bypass
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8 Detailed Description

8.1 Overview

The DS100BR210 is a high performance unidirectional 2-channel repeater optimized for 10G-KR and SAS/SATA operation, where its programmable equalization and de-emphasis compensate for lossy FR-4 printed circuit board backplanes or balanced cables. The DS100BR210 operates in 3 modes: Pin Control Mode (ENSMB = 0), SMBus Slave Mode (ENSMB = 1), and SMBus Master Mode (ENSMB = Float) to load register information from external EEPROM.

Each channel has a signal detector circuit that monitors the input signal amplitude. When the input signal level is below the detector's de-assert level, the output is disabled. When input signal level exceeds the detector's assert level, the output is enabled. The signal detector circuit is used to support the OOB signaling used in SAS and SATA.

8.2 Functional Block Diagram

ds100br210blk.gif

8.3 Feature Description

8.3.1 4-Level Input Configuration Guidelines

The 4-level input pins use a resistor divider to set the four valid control levels and provide a wider range of control settings when ENSMB = 0. There is an internal 30 kΩ pull-up and a 60 kΩ pull-down connected to the package pin. These resistors, together with the external resistor connection, combine to achieve the desired voltage level. By using the 1 kΩ pull-down, 20 kΩ pull-down, no connect, or 1 kΩ pull-up, the optimal voltage levels for each of the four input states are achieved as shown in Table 1.

Table 1. 4–Level Control Pin Settings

RESULTING PIN VOLTAGE
LEVEL SETTING 3.3 V MODE 2.5 V MODE
0 Tie 1 kΩ to GND 0.10 V 0.08 V
R Tie 20 kΩ to GND 1/3 x VIN 1/3 x VDD
F Float (leave pin open) 2/3 x VIN 2/3 x VDD
1 Tie 1 kΩ to VIN or VDD VIN - 0.05 V VDD - 0.04 V

8.3.2 Typical 4-Level Input Thresholds

  • Internal Threshold between 0 and R = 0.2 * VIN or VDD
  • Internal Threshold between R and F = 0.5 * VIN or VDD
  • Internal Threshold between F and 1 = 0.8 * VIN or VDD

In order to minimize the startup current associated with the integrated 2.5 V regulator, the 1 kΩ pull-up / pull-down resistors are recommended. If several four level inputs require the same setting, it is possible to combine two or more 1 kΩ resistors into a single lower value resistor. As an example, combining two inputs with a single 500 Ω resistor is a valid way to save board space.

8.4 Device Functional Modes

8.4.1 Pin Control Mode

When in Pin Mode (ENSMB = 0), equalization, de-emphasis, and VOD (output amplitude) can be selected via external pin control for both the A-channel and B-channel. Equalization and de-emphasis can be programmed by pin selection for each side independently. For further device control, the VOD_SEL and MODE pins are available to improve DS100BR210 performance depending on design applications. The receiver electrical idle detect threshold is also adjustable via the SD_TH pin. Pin control mode is ideal in situations where neither MCU or EEPROM is available to access the device via SMBus SDA and SCL lines.

8.4.2 SMBus Slave Mode

When in Slave SMBus Mode (ENSMB = 1), equalization, de-emphasis, and VOD (output amplitude) are all programmable on an individual channel basis. Upon assertion of ENSMB, the EQx, DEMx, and VODx settings are controlled by SMBus immediately. It is important to note that SMBus settings can only be changed from their defaults after asserting Register Enable by setting Reg 0x06[3] = 1. The EQx, DEMx, and VODx pins are subsequently converted to AD0-AD3 SMBus address inputs. The other external control pins (TX_DIS, MODE, and SD_TH) remain active unless their respective registers are written to and the appropriate override bit is set. If the user overrides a pin control, the input voltage level of that control pin is ignored until ENSMB is driven low (Pin Mode). In the event that channels are powered down via the TX_DIS pin, register setting states are not affected.

Table 2. Signal Detect Threshold Level(1)

Level SD_TH (Pin 14) SMBus REG bit [3:2] and [1:0] TYPICAL ASSERT LEVEL (mVpp) TYPICAL DE-ASSERT LEVEL (mVpp)
1 0 10 210 150
2 R 01 160 100
3 F (Default) 00 180 110
4 1 11 190 130
(1) Typical assert and de-assert levels were measured with VDD = 2.5 V, 25°C, and 010101 pattern at 8 Gbps.

8.4.3 SMBus Master Mode

When in SMBus Master Mode (ENSMB = Float), the equalization, de-emphasis, and VOD (output amplitude) for multiple devices can be loaded via external EEPROM. By asserting a Float condition on the ENSMB pin, an external EEPROM writes register settings to each device in accordance with its SMBus slave address. The settings programmable by external EEPROM provide only a subset of all the register bits available via SMBus Slave Mode, and the bit-mapping between SMBus Slave Mode registers and EEPROM addresses can be referenced in Table 6. Once the EEPROM successfully finishes loading each device's register settings, the device reverts back to SMBus Slave Mode and releases SDA and SCL control to an external master MCU. If the EEPROM fails to load settings to a particular device, for example due to an invalid or blank hex file, the device waits indefinitely in an unknown state where access to the SMBus lines is not possible.

8.4.4 Signal Conditioning Settings

Equalization, de-emphasis, and VOD settings accessible via the pin controls are chosen to meet the needs of most high speed applications. For additional levels and flexibility in EQ, de-emphasis, and VOD programming, these settings can be controlled via the SMBus registers. Each control pin input has a total of four possible voltage level settings. In pin mode, Table 3 shows the 16 EQ settings available, and Table 4 shows the 16 de-emphasis and VOD combination settings available. Note that when in pin mode, only 16 of a possible 256 EQ programmable levels can be accessed by setting the EQx[1:0] pins. In addition, each pin setting applied to the VOD_SEL and DEMx pin input programs a fixed combination of VOD and de-emphasis. In order to access all 256 EQ levels and control both VOD and de-emphasis settings independently, SMBus register access must be used.

Table 3. Equalizer Settings

EQUALIZATION BOOST RELATIVE TO DC
LEVEL EQA1
EQB1
EQA0
EQB0
EQ — 8 bits [7:0] dB BOOST at 5 GHz SUGGESTED MEDIA(1)
1 0 0 0000 0000 = 0x00 2.5 FR4 < 5 inch trace
2 0 R 0000 0001 = 0x01 6.5 FR4 5 inch trace
3 0 F 0000 0010 = 0x02 9 FR4 10 inch trace
4 0 1 0000 0011 = 0x03 11.5 FR4 15 inch trace
5 R 0 0000 0111 = 0x07 14 FR4 20 inch trace
6 R R 0001 0101 = 0x15 15 FR4 25 inch trace
7 R F 0000 1011 = 0x0B 17 FR4 25 inch trace
8 R 1 0000 1111 = 0x0F 19 7m 30 AWG Cable
9 F 0 0101 0101 = 0x55 20 FR4 30 inch trace
10 F R 0001 1111 = 0x1F 23 8m 30 AWG Cable
FR4 35 inch trace
11 F F 0010 1111 = 0x2F 25 10m 30 AWG Cable
12 F 1 0011 1111 = 0x3F 27 10m - 12m, Cable
13 1 0 1010 1010 = 0xAA 30
14 1 R 0111 1111 = 0x7F 31
15 1 F 1011 1111 = 0xBF 33
16 1 1 1111 1111 = 0xFF 34
(1) Settings are approximate and will change based on PCB material, trace dimensions, and driver waveform characteristics. Optimal EQ settings should be determined via simulation and prototype verification.

Table 4. De-Emphasis and Output Voltage Setting

Level VOD_SEL(1)(2) DEMA/B SMBus Register
DEM Level
SMBus Register
VOD Level
VOD (mVpp) DEM (dB)
1 0 0 000 000 700 0
2 0 F 010 000 700 -3.5
3 0 R 011 000 700 -6
4 0 1 101 000 700 -9
5 F 0 000 011 1000 0
6 F F 010 011 1000 -3.5
7 F R 011 011 1000 -6
8 F 1 101 011 1000 -9
9 R 0 000 101 1200 -0
10 R F 010 101 1200 -3.5
11 R R 011 101 1200 -6
12 R 1 101 101 1200 -9
13 1 0 000 100 1100 0
14 1 F 001 100 1100 -1.5
15 1 R 001 110 1300 -1.5
16 1 1 010 110 1300 -3.5
(1) When VOD_SEL is in the Logic 1 state (1 kΩ resistor to VIN or VDD), the DS100BR210 will support 10G-KR back-channel communication using pin control.
(2) In SMBus Mode, if VOD_SEL is in the Logic 1 state (1 kΩ resistor to VIN or VDD), the DS100BR210 AD0-AD3 pins are internally forced to 0.

8.5 Programming

8.5.1 System Management Bus (SMBus) and Configuration Registers

The System Management Bus interface is compatible with the SMBus 2.0 physical layer specification. Tie ENSMB = 1 kΩ to VDD (2.5 V mode) or VIN (3.3 V mode) to enable SMBus Slave Mode and allow access to the configuration registers.

The DS100BR210 uses AD[3:0] inputs in both SMBus Modes. These AD[3:0] pins are the user set SMBus slave address inputs and have internal pull-downs. Based on the SMBus 2.0 specification, the DS100BR210 has a 7-bit slave address. The LSB is set to 0'b (for a WRITE). When AD[3:0] pins are left floating or pulled low, AD[3:0] = 0000'b, and the device default address byte is 0xB0. The device supports up to 16 address bytes, as shown in Table 5.

Table 5. Device Slave Address Bytes

AD[3:0] SETTINGS FULL SLAVE ADDRESS BYTE
(7-Bit ADDRESS + WRITE BIT)
7-Bit SLAVE ADDRESS (HEX)
0000 B0 58
0001 B2 59
0010 B4 5A
0011 B6 5B
0100 B8 5C
0101 BA 5D
0110 BC 5E
0111 BE 5F
1000 C0 60
1001 C2 61
1010 C4 62
1011 C6 63
1100 C8 64
1101 CA 65
1110 CC 66
1111 CE 67

The SDA and SCL pins are 3.3 V tolerant, but are not 5 V tolerant. An external pull-up resistor is required on the SDA and SCL line. The resistor value can be from 2 kΩ to 5 kΩ depending on the voltage, loading, and speed.

8.5.2 Transfer Of Data Via the SMBus

During normal operation, the data on SDA must be stable during the time when SCL is High.

There are three unique states for the SMBus:

START: A High-to-Low transition on SDA while SCL is High indicates a message START condition.

STOP: A Low-to-High transition on SDA while SCL is High indicates a message STOP condition.

IDLE: If SCL and SDA are both High for a time exceeding tBUF from the last detected STOP condition or if they are High for a total exceeding the maximum specification for tHIGH, then the bus will transfer to the IDLE state.

8.5.3 SMBus Transactions

The device supports WRITE and READ transactions. See Table 9 for register address, type (Read/Write, Read Only), default value, and function information.

8.5.4 Writing a Register

To write a register, the following protocol is used (see SMBus 2.0 specification):

  1. The Host drives a START condition, the 7-bit SMBus address, and a “0” indicating a WRITE.
  2. The Device (Slave) drives the ACK bit (“0”).
  3. The Host drives the 8-bit Register Address.
  4. The Device drives an ACK bit (“0”).
  5. The Host drive the 8-bit data byte.
  6. The Device drives an ACK bit (“0”).
  7. The Host drives a STOP condition.

Once the WRITE transaction is completed, the bus goes IDLE and communication with other SMBus devices may now occur.

8.5.5 Reading a Register

To read a register, the following protocol is used (see SMBus 2.0 specification):

  1. The Host drives a START condition, the 7-bit SMBus address, and a “0” indicating a WRITE.
  2. The Device (Slave) drives the ACK bit (“0”).
  3. The Host drives the 8-bit Register Address.
  4. The Device drives an ACK bit (“0”).
  5. The Host drives a START condition.
  6. The Host drives the 7-bit SMBus Address, and a “1” indicating a READ.
  7. The Device drives an ACK bit “0”.
  8. The Device drives the 8-bit data value (register contents).
  9. The Host drives a NACK bit “1”indicating end of the READ transfer.
  10. The Host drives a STOP condition.

Once the READ transaction is completed, the bus goes IDLE and communication with other SMBus devices may now occur.

Please see Table 9 for more information.

8.5.6 EEPROM Programming

The DS100BR210 supports reading directly from an external EEPROM device by implementing SMBus Master mode. When used in SMBus Master mode, the DS100BR210 will read directly from a specific location in the external EEPROM. When designing a system that uses external EEPROM, the following guidelines should be followed:

  • Set the DS100BR210 in SMBus Master Mode.
    • ENSMB (Pin 3) = Float
  • The external EEPROM device must support 1 MHz operation.
  • The external EEPROM device address byte must be 0xA0.
  • Set the AD[3:0] inputs for SMBus address byte. When AD[3:0] = 0000'b, the device address byte is 0xB0.
  • The device address can be set with the use of the AD[3:0] input up to 16 different addresses. Use the example below to set each of the SMBus addresses.
    • AD[3:0] = 0001'b, the device address byte is 0xB2
    • AD[3:0] = 0010'b, the device address byte is 0xB4
    • AD[3:0] = 0011'b, the device address byte is 0xB6
    • AD[3:0] = 0100'b, the device address byte is 0xB8
  • The master implementation in the DS100BR210 supports multiple devices reading from one EEPROM. When tying multiple devices to the SDA and SCL pins, use these guidelines:
    • Use adjacent SMBus addresses for the 4 devices
    • Use a pull-up resistor on SDA; value = 4.7 kΩ
    • Use a pull-up resistor on SCL: value = 4.7 kΩ
    • Daisy-chain READEN (Pin 17) and DONE (Pin 18) from one device to the next device in the sequence.
      1. Tie READEN of the 1st device in the chain (U1) to GND
      2. Tie DONE of U1 to READEN of U2
      3. Tie DONE of U2 to READEN of U3
      4. Tie DONE of U3 to READEN of U4
      5. Optional: Tie DONE of U4 to a LED to show each of the devices have been loaded successfully

8.5.6.1 Master EEPROM Programming

Below is an example of a 2 kbits (256 x 8-bit) EEPROM in hex format for the DS100BR210 device. The first 3 bytes of the EEPROM always contain a header common and necessary to control initialization of all devices connected to the same SMBus line. There is a CRC enable flag to enable or disable CRC checking. There is a MAP bit to flag the presence of an address map that specifies the configuration data start address in the EEPROM. If the MAP bit is not present, the configuration data start address immediately follows the 3-byte base header. A bit to indicate an EEPROM size > 256 bytes is necessary to address the EEPROM properly. There are 37 bytes of data size for each DS100BR210 device. For more details about EEPROM programming and Master mode, refer to SNLA228.

30138815.gifFigure 8. Typical EEPROM Data Set

NOTE

The maximum EEPROM size supported is 8 kbits (1024 x 8 bits).

The CRC-8 calculation is performed for each device on the first 3 bytes of header information plus the 37 bytes of data for the DS100BR210 or 40 bytes in total. The result of this calculation is placed immediately after the DS100BR210 data in the EEPROM which ends with "5454". The CRC-8 in the DS100BR210 uses a polynomial = x8 + x2 + x + 1.

There are two pins that provide unique functions in SMBus Master mode:

  • DONE
  • READEN

When the DS100BR210 is powered up in SMBus Master mode, it reads its configuration from the external EEPROM when the READEN pin goes low. When the DS100BR210 is finished reading its configuration from the external EEPROM, it drives the DONE pin low. In applications where there is more than one DS100BR210 on the same SMBus, bus contention can result if more than one DS100BR210 tries to take control of the SMBus at the same time. The READEN and DONE pins prevent this bus contention. The system should be designed so that the READEN pin from one DS100BR210 in the system is driven low on power-up. This DS100BR210 will take command of the SMBus on power-up and will read its initial configuration from the external EEPROM. When the first DS100BR210 is finished reading its configuration, it will drive the DONE pin low. This pin should be connected to the READEN pin of another DS100BR210. When this second DS100BR210 senses its READEN pin driven low, it will take command of the SMBus and read its initial configuration from the external EEPROM, after which it will set its DONE pin low. By connecting the DONE pin of each DS100BR210 to the READEN pin of the next DS100BR210, each DS100BR210 can read its initial configuration from the EEPROM without causing bus contention.

30175316.gifFigure 9. Typical Multi-Device EEPROM Connection Diagram

8.5.6.2 EEPROM Address Mapping

A detailed EEPROM Address Mapping for a single device is shown in Table 6. For instances where multiple devices are written to EEPROM, the device starting address definitions align starting with Byte 0x03. A register map overview for a multi-device EEPROM address map is shown in Table 7.

Table 6. Single Device with Default Value

EEPROM Address Byte BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
Description 0x00 CRC_EN Address Map Present EEPROM > 256 Bytes Reserved DEVICE COUNT[3] DEVICE COUNT[2] DEVICE COUNT[1] DEVICE COUNT[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x01 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x02 Max EEPROM Burst size[7] Max EEPROM Burst size[6] Max EEPROM Burst size[5] Max EEPROM Burst size[4] Max EEPROM Burst size[3] Max EEPROM Burst size[2] Max EEPROM Burst size[1] Max EEPROM Burst size[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x03 Cont_talk_EN_CHA Cont_talk_EN_CHB Reserved Reserved Reserved Sel_LOS Reserved Reserved
SMBus Register 0x01[7] 0x01[6] 0x01[5] 0x01[4] 0x01[3] 0x01[2] 0x01[1] 0x01[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x04 Ovrd_LOS LOS_Value PWDN_Inputs PWDN_Osc Reserved eSATA En CHA eSATA En CHB Ovrd TX_DIS
SMBus Register 0x02[5] 0x02[4] 0x02[3] 0x02[2] 0x02[0] 0x04[7] 0x04[6] 0x04[5]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x05 TX_DIS CHA TX_DIS CHB Reserved EQ Stage 4 CHB EQ Stage 4 CHA Reserved Ovrd IDLE_TH Reserved
SMBus Register 0x04[4] 0x04[3] 0x04[2] 0x04[1] 0x04[0] 0x06[4] 0x08[6] 0x08[5]
Default Value 0x04 0 0 0 0 0 1 0 0
Description 0x06 Ovrd IDLE Reserved Ovrd Out_Mode Ovrd DEM Reserved Reserved Reserved Reserved
SMBus Register 0x08[4] 0x08[3] 0x08[2] 0x08[1] 0x08[0] 0x0B[6] 0x0B[5] 0x0B[4]
Default Value 0x07 0 0 0 0 0 1 1 1
Description 0x07 Reserved Reserved Reserved Reserved CHA_Idle_Auto CHA_Idle_Sel Reserved Reserved
SMBus Register 0x0B[3] 0x0B[2] 0x0B[1] 0x0B[0] 0x0E[5] 0x0E[4] 0x0E[3] 0x0E[2]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x08 CHA_EQ[7] CHA_EQ[6] CHA_EQ[5] CHA_EQ[4] CHA_EQ[3] CHA_EQ[2] CH0_EQ[1] CH0_EQ[0]
SMBus Register 0x0F[7] 0x0F[6] 0x0F[5] 0x0F[4] 0x0F[3] 0x0F[2] 0x0F[1] 0x0F[0]
Default Value 0x2F 0 0 1 0 1 1 1 1
Description 0x09 CHA_Sel SCP CHA_Out Mode Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x10[7] 0x10[6] 0x10[5] 0x10[4] 0x10[3] 0x10[2] 0x10[1] 0x10[0]
Default Value 0xED 1 1 1 0 1 1 0 1
Description 0x0A CHA_DEM[2] CHA_DEM[1] CHA_DEM[0] Reserved CHA_Idle_ThA[1] CHA_Idle_ThA[0] CHA_Idle_ThD[1] CHA_Idle_ThD[0]
SMBus Register 0x11[2] 0x11[1] 0x11[0] 0x12[7] 0x12[3] 0x12[2] 0x12[1] 0x12[0]
Default Value 0x40 0 1 0 0 0 0 0 0
Description 0x0B CHB_Idle_Auto CHB_Idle_Sel Reserved Reserved CHB_EQ[7] CHB_EQ[6] CHB_EQ[5] CHB_EQ[4]
SMBus Register 0x15[5] 0x15[4] 0x15[3] 0x15[2] 0x16[7] 0x16[6] 0x16[5] 0x16[4]
Default Value 0x02 0 0 0 0 0 0 1 0
Description 0x0C CHB_EQ[3] CHB_EQ[2] CHB_EQ[1] CHB_EQ[0] CHB_Sel SCP CHB_Out Mode Reserved Reserved
SMBus Register 0x16[3] 0x16[2] 0x16[1] 0x16[0] 0x17[7] 0x17[6] 0x17[5] 0x17[4]
Default Value 0xFE 1 1 1 1 1 1 1 0
Description 0x0D Reserved Reserved Reserved Reserved CHB_DEM[2] CHB_DEM[1] CHB_DEM[0] Reserved
SMBus Register 0x17[3] 0x17[2] 0x17[1] 0x17[0] 0x18[2] 0x18[1] 0x18[0] 0x19[7]
Default Value 0xD4 1 1 0 1 0 1 0 0
Description 0x0E CHB_Idle_ThA[1] CHB_Idle_ThA[0] CHB_Idle_ThD[1] CHB_Idle_ThD[0] Reserved Reserved Reserved Reserved
SMBus Register 0x19[3] 0x19[2] 0x19[1] 0x19[0] 0x1C[5] 0x1C[4] 0x1C[3] 0x1C[2]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x0F Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x1D[7] 0x1D[6] 0x1D[5] 0x1D[4] 0x1D[3] 0x1D[2] 0x1D[1] 0x1D[0]
Default Value 0x2F 0 0 1 0 1 1 1 1
Description 0x10 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x1E[7] 0x1E[6] 0x1E[5] 0x1E[4] 0x1E[3] 0x1E[2] 0x1E[1] 0x1E[0]
Default Value 0xAD 1 0 1 0 1 1 0 1
Description 0x11 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x1F[2] 0x1F[1] 0x1F[0] 0x20[7] 0x20[3] 0x20[2] 0x20[1] 0x20[0]
Default Value 0x40 0 1 0 0 0 0 0 0
Description 0x12 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x23[5] 0x23[4] 0x23[3] 0x23[2] 0x24[7] 0x24[6] 0x24[5] 0x24[4]
Default Value 0x02 0 0 0 0 0 0 1 0
Description 0x13 Reserved Reserved Reserved Reserved Reserved Reserved Reserved CHA_VOD[2]
SMBus Register 0x24[3] 0x24[2] 0x24[1] 0x24[0] 0x25[7] 0x25[6] 0x25[5] 0x25[4]
Default Value 0xFA 1 1 1 1 1 0 1 0
Description 0x14 CHA_VOD[1] CHA_VOD[0] Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x25[3] 0x25[2] 0x25[1] 0x25[0] 0x26[2] 0x26[1] 0x26[0] 0x27[7]
Default Value 0xD4 1 1 0 1 0 1 0 0
Description 0x15 Reserved Reserved Reserved Reserved Ovrd_Fast IDLE hi_idle_th_CHA hi_idle_th_CHB fast_idle_CHA
SMBus Register 0x27[3] 0x27[2] 0x27[1] 0x27[0] 0x28[6] 0x28[5] 0x28[4] 0x28[3]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x16 fast_idle_CHB Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x28[2] 0x28[1] 0x28[0] 0x2B[5] 0x2B[4] 0x2B[3] 0x2B[2] 0x2C[7]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x17 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x2C[6] 0x2C[5] 0x2C[4] 0x2C[3] 0x2C[2] 0x2C[1] 0x2C[0] 0x2D[7]
Default Value 0x5F 0 1 0 1 1 1 1 1
Description 0x18 Reserved Reserved CHB_VOD[2] CHB_VOD[1] CHB_VOD[0] Reserved Reserved Reserved
SMBus Register 0x2D[6] 0x2D[5] 0x2D[4] 0x2D[3] 0x2D[2] 0x2D[1] 0x2D[0] 0x2E[2]
Default Value 0x5A 0 1 0 1 1 0 1 0
Description 0x19 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x2E[1] 0x2E[0] 0x2F[7] 0x2F[3] 0x2F[2] 0x2F[1] 0x2F[0] 0x32[5]
Default Value 0x80 1 0 0 0 0 0 0 0
Description 0x1A Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x32[4] 0x32[3] 0x32[2] 0x33[7] 0x33[6] 0x33[5] 0x33[4] 0x33[3]
Default Value 0x05 0 0 0 0 0 1 0 1
Description 0x1B Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x33[2] 0x33[1] 0x33[0] 0x34[7] 0x34[6] 0x34[5] 0x34[4] 0x34[3]
Default Value 0xF5 1 1 1 1 0 1 0 1
Description 0x1C Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x34[2] 0x34[1] 0x34[0] 0x35[2] 0x35[1] 0x35[0] 0x36[7] 0x36[3]
Default Value 0xA8 1 0 1 0 1 0 0 0
Description 0x1D Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x36[2] 0x36[1] 0x36[0] 0x39[5] 0x39[4] 0x39[3] 0x39[2] 0x3A[7]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x1E Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x3A[6] 0x3A[5] 0x3A[4] 0x3A[3] 0x3A[2] 0x3A[1] 0x3A[0] 0x3B[7]
Default Value 0x5F 0 1 0 1 1 1 1 1
Description 0x1F Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x3B[6] 0x3B[5] 0x3B[4] 0x3B[3] 0x3B[2] 0x3B[1] 0x3B[0] 0x3C[2]
Default Value 0x5A 0 1 0 1 1 0 1 0
Description 0x20 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x3C[1] 0x3C[0] 0x3D[7] 0x3D[3] 0x3D[2] 0x3D[1] 0x3D[0] 0x40[5]
Default Value 0x80 1 0 0 0 0 0 0 0
Description 0x21 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x40[4] 0x40[3] 0x40[2] 0x41[7] 0x41[6] 0x41[5] 0x41[4] 0x41[3]
Default Value 0x05 0 0 0 0 0 1 0 1
Description 0x22 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x41[2] 0x41[1] 0x41[0] 0x42[7] 0x42[6] 0x42[5] 0x42[4] 0x42[3]
Default Value 0xF5 1 1 1 1 0 1 0 1
Description 0x23 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x42[2] 0x42[1] 0x42[0] 0x43[2] 0x43[1] 0x43[0] 0x44[7] 0x44[3]
Default Value 0xA8 1 0 1 0 1 0 0 0
Description 0x24 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x44[2] 0x44[1] 0x44[0] 0x47[3] 0x47[2] 0x47[1] 0x47[0] 0x48[7]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x25 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x48[6] 0x4C[7] 0x4C[6] 0x4C[5] 0x4C[4] 0x4C[3] 0x4C[0] 0x59[0]
Default Value 0x00 0 0 0 0 0 0 0 0
Description 0x26 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x5A[7] 0x5A[6] 0x5A[5] 0x5A[4] 0x5A[3] 0x5A[2] 0x5A[1] 0x5A[0]
Default Value 0x54 0 1 0 1 0 1 0 0
Description 0x27 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
SMBus Register 0x5B[7] 0x5B[6] 0x5B[5] 0x5B[4] 0x5B[3] 0x5B[2] 0x5B[1] 0x5B[0]
Default Value 0x54 0 1 0 1 0 1 0 0

Table 7. Multi-Device EEPROM Address Map Overview(1)

ADDR BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
Header 0 CRC EN Address Map EEPROM > 256 Bytes Reserved COUNT[3] COUNT[2] COUNT[1] COUNT[0]
1 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved
2 EE Burst[7] EE Burst[6] EE Burst[5] EE Burst[4] EE Burst[3] EE Burst[2] EE Burst[1] EE Burst[0]
Device 0
Info
3 CRC[7] CRC[6] CRC[5] CRC[4] CRC[3] CRC[2] CRC[1] CRC[0]
4 EE AD0 [7] EE AD0 [6] EE AD0 [5] EE AD0 [4] EE AD0 [3] EE AD0 [2] EE AD0 [1] EE AD0 [0]
Device 1
Info
5 CRC[7] CRC[6] CRC[5] CRC[4] CRC[3] CRC[2] CRC[1] CRC[0]
6 EE AD1 [7] EE AD1 [6] EE AD1 [5] EE AD1 [4] EE AD1 [3] EE AD1 [2] EE AD1 [1] EE AD1 [0]
Device 2
Info
7 CRC[7] CRC[6] CRC[5] CRC[4] CRC[3] CRC[2] CRC[1] CRC[0]
8 EE AD2 [7] EE AD2 [6] EE AD2 [5] EE AD2 [4] EE AD2 [3] EE AD2 [2] EE AD2 [1] EE AD2 [0]
Device 3
Info
9 CRC[7] CRC[6] CRC[5] CRC[4] CRC[3] CRC[2] CRC[1] CRC[0]
10 EE AD3 [7] EE AD3 [6] EE AD3 [5] EE AD3 [4] EE AD3 [3] EE AD3 [2] EE AD3 [1] EE AD3 [0]
Device 0 Addr 3 11 RES RES RES RES RES Sel_LOS RES RES
Device 0 Addr 4 12 Ovrd_LOS LOS_Value PWDN Inp PWDN OSC RES eSATA CHA eSATA CHB Ovrd TX_DIS
Device 0 Addr 38 46 RES RES RES RES RES RES RES RES
Device 0 Addr 39 47 RES RES RES RES RES RES RES RES
Device 1 Addr 3 48 RES RES RES RES RES Sel_LOS RES RES
Device 1 Addr 4 49 Ovrd_LOS LOS_Value PWDN Inp PWDN OSC RES eSATA CHA eSATA CHB Ovrd TX_DIS
Device 1 Addr 38 83 RES RES RES RES RES RES RES RES
Device 1 Addr 39 84 RES RES RES RES RES RES RES RES
Device 2 Addr 3 85 RES RES RES RES RES Sel_LOS RES RES
Device 2 Addr 4 86 Ovrd_LOS LOS_Value PWDN Inp PWDN OSC RES eSATA CHA eSATA CHB Ovrd TX_DIS
Device 2 Addr 38 120 RES RES RES RES RES RES RES RES
Device 2 Addr 39 121 RES RES RES RES RES RES RES RES
Device 3 Addr 3 122 RES RES RES RES RES Sel_LOS RES RES
Device 3 Addr 4 123 Ovrd_LOS LOS_Value PWDN Inp PWDN OSC RES eSATA CHA eSATA CHB Ovrd TX_DIS
Device 3 Addr 38 157 RES RES RES RES RES RES RES RES
Device 3 Addr 39 158 RES RES RES RES RES RES RES RES
(1)
  • CRC EN = 1; Address Map = 1
  • EEPROM > 256 Bytes = 0
  • COUNT[3:0] = 0011'b
  • Note: Multiple DS100BR210 devices may point at the same address space if they have identical programming values.

Table 8. Multi DS100BR210 EEPROM Data

EEPROM ADDRESS ADDRESS (HEX) EEPROM DATA COMMENTS
0 00 0x43 CRC_EN = 0, Address Map = 1, Device Count = 3 (Devices 0, 1, 2, and 3)
1 01 0x00
2 02 0x08 EEPROM Burst Size
3 03 0x00 CRC not used
4 04 0x0B Device 0 Address Location
5 05 0x00 CRC not used
6 06 0x30 Device 1 Address Location
7 07 0x00 CRC not used
8 08 0x30 Device 2 Address Location
9 09 0x00 CRC not used
10 0A 0x0B Device 3 Address Location
11 0B 0x00 Begin Device 0 and Device 3 - Address Offset 3
12 0C 0x00
13 0D 0x04
14 0E 0x07
15 0F 0x00
16 10 0x2F Default EQ CHA
17 11 0xED
18 12 0x40
19 13 0x02 Default EQ CHB
20 14 0xFE Default EQ CHB
21 15 0xD4
22 16 0x00
23 17 0x2F
24 18 0xAD
25 19 0x40
26 1A 0x02
27 1B 0xFA BR210 CHA VOD = 1000 mVpp
28 1C 0xD4 BR210 CHA VOD = 1000 mVpp
29 1D 0x00
30 1E 0x00
31 1F 0x5F
32 20 0x5A BR210 CHB VOD = 1000 mVpp
33 21 0x80
34 22 0x05
35 23 0xF5
36 24 0xA8
37 25 0x00
38 26 0x5F
39 27 0x5A
40 28 0x80
41 29 0x05
42 2A 0xF5
43 2B 0xA8
44 2C 0x00
45 2D 0x00
46 2E 0x54
47 2F 0x54 End Device 0 and Device 3 - Address Offset 39
48 30 0x00 Begin Device 1 and Device 2 - Address Offset 3
49 31 0x00
50 32 0x04
51 33 0x07
52 34 0x00
53 35 0x2F Default EQ CHA
54 36 0xED
55 37 0x40
56 38 0x02 Default EQ CHB
57 39 0xFE Default EQ CHB
58 3A 0xD4
59 3B 0x00
60 3C 0x2F
61 3D 0xAD
62 3E 0x40
63 3F 0x02
64 40 0xFA BR210 CHA VOD = 1000 mVpp
65 41 0xD4 BR210 CHA VOD = 1000 mVpp
66 42 0x00
67 43 0x00
68 44 0x5F
69 45 0x5A BR210 CHB VOD = 1000 mVpp
70 46 0x80
71 47 0x05
72 48 0xF5
73 49 0xA8
74 4A 0x00
75 4B 0x5F
76 4C 0x5A
77 4D 0x80
78 4E 0x05
79 4F 0xF5
80 50 0xA8
81 51 0x00
82 52 0x00
83 53 0x54
84 54 0x54 End Device 1 and Device 2 - Address Offset 39

8.6 Register Maps

Table 9. SMBus Slave Mode Register Map

ADDRESS REGISTER
NAME
BIT FIELD TYPE DEFAULT EEPROM
REG BIT
DESCRIPTION
0x00 Device ID 7 Reserved R/W 0x00 Set bit to 0
SMBus strap observation
6:3 SMBus Address [3:0] R
2 EEPROM Reading Done R 1 = EEPROM Done Loading
0 = EEPROM Loading
1:0 Reserved RWSC Set bits to 0
0x01 Control 1 7:6 Idle Control R/W 0x00 Yes Continuous Talk Control (Output Always On)
[7]: Continuous talk ENABLE (Channel A)
[6]: Continuous talk ENABLE (Channel B)
5:3 Reserved Set bits to 0
2 LOS Select LOS Monitor Selection
1 = Use LOS from CH B
0 = Use LOS from CH A
1:0 Reserved Set bits to 0
0x02 Control 2 7:6 Reserved R/W 0x00 Set bits to 0
5 LOS override Yes 1 = LOS pin override enable
0 = Use Normal Signal Detection
4 LOS override value Yes 1 = Normal Operation
0 = Output LOS
3 PWDN Inputs Yes 1 = PWDN
0 = Normal Operation
2 PWDN Oscillator Yes
1 Reserved Set bit to 0
0 Reserved Yes Set bit to 0
0x03 Reserved 7:0 Reserved R/W 0x00 Reserved
0x04 Control 3 7:6 eSATA Mode Enable R/W 0x00 Yes [7] Channel A (1)
[6] Channel B (1)
5 TX_DIS Override Enable 1 = Override Use Reg 0x04[4:3]
0 = Normal Operation - uses pin
4 TX_DIS Value Channel A 1 = Channel A TX Disabled
0 = Channel A TX Enabled
3 TX_DIS Value Channel B 1 = Channel B TX Disabled
0 = Channel B TX Enabled
2 Reserved Set bit to 0
1:0 EQ Stage 4 Limiting Control [1]: Channel B - EQ Stage 4 Limiting On/Off
[0]: Channel A - EQ Stage 4 Limiting On/Off
Setting this control bit turns on added voltage gain compared to normal operating range. If the bits are set to 1 (On), the EQ will act as a limiting amplifier, resulting in reduction of overall linear gain characteristics. Turning these bits On is not recommended for 10G-KR applications.
0x05 Reserved 7:0 Reserved R/W 0x00 Reserved
0x06 Slave Register Control 7 Disable EEPROM CFG R/W 0x10 Disable Master Mode EEPROM Configuration
6:5 Reserved Set bits to 0
4 Reserved Yes Set bit to 1
3 Register Enable 1 = Enable SMBus Slave Mode Register Control
0 = Disable SMBus Slave Mode Register Control
Note: In order to change VOD, DEM, and EQ of the channels in slave mode, this bit must be set to 1.
2:1 Reserved Set bits to 0
0 Reserved Set bit to 0
0x07 Digital Reset and Control 7 Reserved R/W 0x01 Set bit to 0
6 Reset Registers 1 = Self clearing reset for SMBus registers (register settings return to default values)
5 Reset SMBus Master 1 = Self clearing reset to SMBus master state machine
4:0 Reserved Set bits to 0 0001'b
0x08 Pin Override 7 Reserved R/W 0x00 Set bit to 0
6 Override Idle Threshold Yes 1 = Override by Channel - see Reg 0x13 and 0x19
0 = SD_TH pin control
5 Reserved Yes Set bit to 0
4 Override IDLE Yes 1 = Force IDLE by Channel - see Reg 0x0E and 0x15
0 = Normal Operation
3 Reserved Yes Set bit to 0
Note: For all applications operating > 8Gbps, users must set this bit to 1 and enable all channels manually.
2 Override Output Mode

1 = Enable Output Mode control for individual outputs. See register locations 0x10[6] and 0x17[6].

0 = Disable - Outputs are kept in the normal mode of operation allowing VOD and DE adjustments.

1 Override DEM Yes Override De-emphasis (ignore rate)
0 Reserved Yes Set bit to 0
0x09-0x0A Reserved 7:0 Reserved R/W 0x00 Reserved
0x0B Reserved 7 Reserved R/W 0x70 Reserved
6:0 Reserved Yes Reserved
0x0C CH A
Analog Override 1
7:0 Reserved R/W 0x00 Set bits to 0x00
0x0D CH A
Reserved
7:0 Reserved R/W 0x00 Set bits to 0x00.
0x0E CH A
Idle Control
7:6 Reserved R/W 0x00 Set bits to 0
5 Idle Auto Yes 1 = Allow IDLE Select control in bit 4
0 = Automatic IDLE detect
(Must set 0x08[4] = 1 to override pin-select control)
4 Idle Select Yes 1 = Output is muted (electrical IDLE)
0 = Output is on
(Must set 0x08[4] = 1 to override pin-select control)
3:2 Reserved Yes Set bits to 0
1:0 Reserved Set bits to 0
0x0F CH A
EQ Setting
7:0 BOOST [7:0] R/W 0x2F Yes EQ Boost Default to 24 dB
See Table 3 for Information
0x10 CH A
Control 1
7 Sel_scp R/W 0xED Yes 1 = Short Circuit Protection ON
0 = Short Circuit Protection OFF
6 Output Mode Yes 1 = Normal operation
0 = 10G-KR operation
5:3 Reserved Yes Set bits to 101'b
2:0 Reserved Yes Set bits to 101'b
0x11 CH A
Control 2
7:5 Reserved R 0x82 Set bits to 100'b
4:3 Reserved R/W Set bits to 0
2:0 DEM [2:0] Yes De-Emphasis
000'b = -0.0 dB
001'b = -1.5 dB
010'b = -3.5 dB (Default)
011'b = -6.0 dB
100'b = -8.0 dB
101'b = -9.0 dB
110'b = -10.5 dB
111'b = -12.0 dB
0x12 CH A
Idle Threshold
7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 IDLE Assert Threshold[1:0] Yes Assert Thresholds
Use only if register 0x08 [6] = 1
00'b = 180 mVpp (Default)
01'b = 160 mVpp
10'b = 210 mVpp
11'b = 190 mVpp
1:0 IDLE De-assert Threshold[1:0] Yes De-assert Thresholds
Use only if register 0x08 [6] = 1
00'b = 110 mVpp (Default)
01'b = 100 mVpp
10'b = 150 mVpp
11'b = 130 mVpp
0x13 CH B
Analog Override 1
7:0 Reserved R/W 0x00 Set bits to 0x00
0x14 CH B
Reserved
7:0 Reserved R/W 0x00 Set bits to 0x00
0x15 CH B
Idle Control
7:6 Reserved R/W 0x00 Set bits to 0
5 Idle Auto Yes 1 = Allow IDLE Select control in bit 4
0 = Automatic IDLE detect
(Must set 0x08[4] = 1 to override pin-select control)
4 Idle Select Yes 1 = Output is muted (electrical IDLE)
0 = Output is on
(Must set 0x08[4] = 1 to override pin-select control)
3:2 Reserved Yes Set bits to 0
1:0 Reserved Set bits to 0
0x16 CH B
EQ Setting
7:0 BOOST [7:0] R/W 0x2F Yes EQ Boost Default to 24 dB
See Table 3 for Information
0x17 CH B
Control 1
7 Sel_scp R/W 0xED Yes 1 = Short Circuit Protection ON
0 = Short Circuit Protection OFF
6 Output Mode Yes 1 = Normal operation
0 = 10G-KR operation
5:3 Reserved Yes Set bits to 101'b
2:0 Reserved Yes Set bits to 101'b
0x18 CH B
Control 2
7:5 Reserved R 0x82 Set bits to 100'b
4:3 Reserved R/W Set bits to 0
2:0 DEM [2:0] Yes De-Emphasis (Default = -3.5 dB)
000'b = -0.0 dB
001'b = -1.5 dB
010'b = -3.5 dB
011'b = -6.0 dB
100'b = -8.0 dB
101'b = -9.0 dB
110'b = -10.5 dB
111'b = -12.0 dB
0x19 CH B
Idle Threshold
7 Reserved R/W 0x00 Yes Set bit to 0
6:4 Reserved Set bits to 0
3:2 IDLE Assert Threshold[1:0] Yes Assert Thresholds
Use only if register 0x08 [6] = 1
00'b = 180 mVpp (Default)
01'b = 160 mVpp
10'b = 210 mVpp
11'b = 190 mVpp
1:0 IDLE De-assert Threshold[1:0] Yes De-assert Thresholds
Use only if register 0x08 [6] = 1
00'b = 110 mVpp (Default)
01'b = 100 mVpp
10'b = 150 mVpp
11'b = 130 mVpp
0x1A-0x1B Reserved 7:0 Reserved R/W 0x00 Reserved
0x1C Reserved 7:6 Reserved R/W 0x00 Reserved
5:2 Reserved Yes Reserved
1:0 Reserved Reserved
0x1D Reserved 7:0 Reserved R/W 0x2F Yes Reserved
0x1E Reserved 7:0 Reserved R/W 0xAD Yes Reserved
0x1F Reserved 7:3 Reserved R/W 0x02 Reserved
2:0 Reserved Yes Reserved
0x20 Reserved 7 Reserved R/W 0x00 Yes Reserved
6:4 Reserved Reserved
3:0 Reserved Yes Reserved
0x21-0x22 Reserved 7:0 Reserved R/W 0x00 Reserved
0x23 Reserved 7:6 Reserved R/W 0x00 Set bits to 0
5:2 Reserved Yes Set bits to 0
1:0 Reserved Set bits to 0
0x24 Reserved 7:0 Reserved R/W 0x2F Yes Reserved
0x25 CH A VOD Control 7:5 Reserved R/W 0xAD Yes Set bits to 0
4:2 VOD_CHA[2:0] Yes VOD Controls for CH A
000'b = 700 mVpp
001'b = 800 mVpp
010'b = 900 mVpp
011'b = 1000 mVpp (Default)
100'b = 1100 mVpp
101'b = 1200 mVpp
110'b = 1300 mVpp
1:0 Reserved Yes Set bits to 0
0x26 Reserved 7:3 Reserved R/W 0x02 Reserved
2:0 Reserved Yes Reserved
0x27 Reserved 7 Reserved R/W 0x00 Yes Reserved
6:4 Reserved Reserved
3:0 Reserved Yes Reserved
0x28 Idle Control 7 Reserved R/W 0x00 Set bit to 0
6 Override Fast Idle Yes 1 = Enable Fast IDLE control in Reg 0x28[3:2]
0 = Disable Fast IDLE control in Reg 0x28[3:2].
5:4 en_hi_idle_th[1:0] Yes Enable high SD thresholds (Slow IDLE)
[5]: CH A
[4]: CH B
3:2 en_fast_idle[1:0] Yes Enable Fast IDLE
[3]: CH A
[2]: CH B
1:0 Reserved Yes Set bits to 0
0x29-0x2A Reserved 7:0 Reserved R/W 0x00 Reserved
0x2B Reserved 7:6 Reserved R/W 0x00 Reserved
5:2 Reserved Yes Reserved
1:0 Reserved Reserved
0x2C Reserved 7:0 Reserved R/W 0x2F Yes Reserved
0x2D CH B VOD Control 7:5 Reserved R/W 0xAD Yes Set bits to 101'b
4:2 VOD_CHB[2:0] Yes VOD Controls for CH B
000'b = 700 mVpp
001'b = 800 mVpp
010'b = 900 mVpp
011'b = 1000 mVpp (Default)
100'b = 1100 mVpp
101'b = 1200 mVpp
110'b = 1300 mVpp
1:0 Reserved Yes Set bits to 01'b
0x2E Reserved 7:3 Reserved R/W 0x02 Reserved
2:0 Reserved Yes Reserved
0x2F Reserved 7 Reserved R/W 0x00 Yes Reserved
6:4 Reserved Reserved
3:0 Reserved Yes Reserved
0x30-0x31 Reserved 7:0 Reserved R/W 0x00 Reserved
0x32 Reserved 7:6 Reserved R/W 0x00 Reserved
5:2 Reserved Yes Reserved
1:0 Reserved Reserved
0x33 Reserved 7:0 Reserved R/W 0x2F Yes Reserved
0x34 Reserved 7:0 Reserved R/W 0xAD Yes Reserved
0x35 Reserved 7:3 Reserved R/W 0x02 Reserved
2:0 Reserved Yes Reserved
0x36 Reserved 7 Reserved R/W 0x00 Yes Reserved
6:4 Reserved Reserved
3:0 Reserved Yes Reserved
0x37-0x38 Reserved 7:0 Reserved R/W 0x00 Reserved
0x39 Reserved 7:6 Reserved R/W 0x00 Reserved
5:2 Reserved Yes Reserved
1:0 Reserved Reserved
0x3A Reserved 7:0 Reserved R/W 0x2F Yes Reserved
0x3B Reserved 7:0 Reserved R/W 0xAD Yes Reserved
0x3C Reserved 7:3 Reserved R/W 0x02 Reserved
2:0 Reserved Yes Reserved
0x3D Reserved 7 Reserved R/W 0x00 Yes Reserved
6:4 Reserved Reserved
3:0 Reserved Yes Reserved
0x3E-0x3F Reserved 7:0 Reserved R/W 0x00 Reserved
0x40 Reserved 7:6 Reserved R/W 0x00 Reserved
5:2 Reserved Yes Reserved
1:0 Reserved Reserved
0x41 Reserved 7:0 Reserved R/W 0x2F Yes Reserved
0x42 Reserved 7:0 Reserved R/W 0xAD Yes Reserved
0x43 Reserved 7:3 Reserved R/W 0x02 Reserved
2:0 Reserved Yes Reserved
0x44 Reserved 7 Reserved R/W 0x00 Yes Reserved
6:4 Reserved Reserved
3:0 Reserved Yes Reserved
0x45 Reserved 7:0 Reserved R/W 0x00 Reserved
0x46 Reserved 7:0 Reserved R/W 0x38 Reserved
0x47 Reserved 7:4 Reserved R/W 0x00 Reserved
3:0 Reserved Yes Reserved
0x48 Reserved 7:6 Reserved R/W 0x05 Yes Reserved
5:0 Reserved Reserved
0x49-0x4B Reserved 7:0 Reserved R/W 0x00 Reserved
0x4C Reserved 7:3 Reserved R/W 0x00 Yes Reserved
2:1 Reserved Reserved
0 Reserved Yes Reserved
0x4D-0x50 Reserved 7:0 Reserved R/W 0x00 Reserved
0x51 Device Information 7:5 Version R 0x66 011'b
4:0 Device ID 0 0110'b
0x52-0x55 Reserved 7:0 Reserved R/W 0x00 Reserved
0x56 Reserved 7:0 Reserved R/W 0x02 Reserved
0x57 Reserved 7:0 Reserved R/W 0x14 Reserved
0x58 Reserved 7:0 Reserved R/W 0x21 Reserved
0x59 Reserved 7:1 Reserved R/W 0x00 Reserved
0 Reserved Yes Reserved
0x5A Reserved 7:0 Reserved R/W 0x54 Yes Reserved
0x5B Reserved 7:0 Reserved R/W 0x54 Yes Reserved
0x5C-0x61 Reserved 7:0 Reserved R/W 0x00 Reserved