SPRS727C August   2012  – April 2014 TMS320C5517

PRODUCTION DATA.  

  1. 1Device Overview
    1. 1.1 Features
    2. 1.2 Applications
    3. 1.3 Description
    4. 1.4 Functional Block Diagram
  2. 2Revision History
  3. 3Device Comparison
  4. 4Terminal Configuration and Functions
    1. 4.1 Pin Diagram
    2. 4.2 Signal Descriptions
      1. 4.2.1  Oscillator and PLL
      2. 4.2.2  Real-Time Clock (RTC)
      3. 4.2.3  RESET, Interrupts, and JTAG
      4. 4.2.4  External Memory Interface (EMIF)
      5. 4.2.5  Inter-Integrated Circuit (I2C)
      6. 4.2.6  Inter-IC Sound (I2S)
      7. 4.2.7  Multichannel Buffered Serial Port (McBSP)
      8. 4.2.8  Multichannel Serial Port Interface (McSPI)
      9. 4.2.9  Serial Peripheral Interface (SPI)
      10. 4.2.10 Universal Asynchronous Receiver and Transmitter (UART)
      11. 4.2.11 Universal Serial Bus (USB) 2.0
      12. 4.2.12 Universal Host-Port Interface (UHPI)
      13. 4.2.13 MultiMedia Card (MMC)
      14. 4.2.14 Successive Approximation (SAR) Analog-to-Digital Converter (ADC)
      15. 4.2.15 General-Purpose Input and Output (GPIO)
      16. 4.2.16 Regulators and Power Management
      17. 4.2.17 Supply Voltage
      18. 4.2.18 Ground
    3. 4.3 Pin Multiplexing
      1. 4.3.1 UHPI, SPI, UART, I2S2, I2S3, and GP[31:27, 20:12] Pin Multiplexing [EBSR.PPMODE Bits]
      2. 4.3.2 MMC1, McSPI, and GP[11:6] Pin Multiplexing [EBSR.SP1MODE Bits]
      3. 4.3.3 MMC0, I2S0, McBSP, and GP[5:0] Pin Multiplexing [EBSR.SP0MODE Bits]
      4. 4.3.4 EMIF EM_A[20:15] and GP[26:21] Pin Multiplexing [EBSR.Axx_MODE bits]
    4. 4.4 Connections for Unused Signals
  5. 5Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 Recommended Operating Conditions
    3. 5.3 Electrical Characteristics
      1. 5.3.1 Power Consumption
      2. 5.3.2 Electrical Characteristics
    4. 5.4 Handling Ratings
    5. 5.5 Thermal Characteristics
    6. 5.6 Power-On Hours
    7. 5.7 Timing and Switching Characteristics
      1. 5.7.1  Parameter Information
        1. 5.7.1.1 1.8-V, 2.75-V, and 3.3-V Signal Transition Levels
        2. 5.7.1.2 3.3-V Signal Transition Rates
        3. 5.7.1.3 Timing Parameters and Board Routing Analysis
      2. 5.7.2  Power Supplies
        1. 5.7.2.1 Power Considerations
          1. 5.7.2.1.1 LDO Configuration
            1. 5.7.2.1.1.1 LDO Inputs
            2. 5.7.2.1.1.2 LDO Outputs
              1. 5.7.2.1.1.2.1 LDO Control
        2. 5.7.2.2 Power-Supply Sequencing
        3. 5.7.2.3 Digital I/O Behavior When Core Power (CVDD) is Down
        4. 5.7.2.4 Power-Supply Design Considerations
        5. 5.7.2.5 Power-Supply Decoupling
        6. 5.7.2.6 LDO Input Decoupling
        7. 5.7.2.7 LDO Output Decoupling
      3. 5.7.3  Reset
        1. 5.7.3.1 Power-On Reset (POR) Circuits
          1. 5.7.3.1.1 RTC Power-On Reset (POR)
          2. 5.7.3.1.2 Main Power-On Reset (POR)
          3. 5.7.3.1.3 Reset Pin (RESET)
        2. 5.7.3.2 Pin Behavior at Reset
        3. 5.7.3.3 Reset Electrical Data and Timing
        4. 5.7.3.4 Configurations at Reset
          1. 5.7.3.4.1 Device and Peripheral Configurations at Device Reset
          2. 5.7.3.4.2 BootMode Implementation and Requirements
        5. 5.7.3.5 Configurations After Reset
          1. 5.7.3.5.1 External Bus Selection Register (EBSR)
          2. 5.7.3.5.2 LDO Control Register [7004h]
          3. 5.7.3.5.3 EMIF and USB System Control Registers (ESCR and USBSCR) [1C33h and 1C32h]
          4. 5.7.3.5.4 Peripheral Clock Gating Control Registers (PCGCR1 and PCGCR2) [1C02h and 1C03h]
          5. 5.7.3.5.5 Pullup and Pulldown Inhibit Registers (PUDINHIBR1, 2, 3, 4, 5, 6, and 7) [1C17h, 1C18h, 1C19h, 1C4Ch, 1C4Dh, 1C4Fh, and 1C50h, respectively]
          6. 5.7.3.5.6 Output Slew Rate Control Register (OSRCR) [1C16h]
      4. 5.7.4  Clock Specifications
        1. 5.7.4.1 Recommended Clock and Control Signal Transition Behavior
        2. 5.7.4.2 Clock Considerations
          1. 5.7.4.2.1 Clock Configurations After Device Reset
            1. 5.7.4.2.1.1 Device Clock Frequency
            2. 5.7.4.2.1.2 Peripheral Clock State
            3. 5.7.4.2.1.3 USB Oscillator Control
        3. 5.7.4.3 PLLs
          1. 5.7.4.3.1 PLL Device-Specific Information
          2. 5.7.4.3.2 Clock PLL Considerations With External Clock Sources
          3. 5.7.4.3.3 External Clock Input From RTC_XI, CLKIN, and USB_MXI Pins
            1. 5.7.4.3.3.1 USB On-Chip Oscillator With External Crystal
            2. 5.7.4.3.3.2 Real-Time Clock (RTC) On-Chip Oscillator With External Crystal
            3. 5.7.4.3.3.3 CLKIN Pin With LVCMOS-Compatible Clock Input (Optional)
        4. 5.7.4.4 Input and Output Clocks Electrical Data and Timing
        5. 5.7.4.5 Wake-up Events, Interrupts, and XF
          1. 5.7.4.5.1 Interrupts Electrical Data and Timing
          2. 5.7.4.5.2 Wake-Up From IDLE Electrical Data and Timing
          3. 5.7.4.5.3 XF Electrical Data and Timing
      5. 5.7.5  Direct Memory Access (DMA) Controller
        1. 5.7.5.1 DMA Channel Synchronization Events
      6. 5.7.6  External Memory Interface (EMIF)
        1. 5.7.6.1 EMIF Asynchronous Memory Support
        2. 5.7.6.2 EMIF Non-Mobile and Mobile Synchronous DRAM Memory Supported
        3. 5.7.6.3 EMIF Electrical Data and Timing CVDD = 1.05 V, DVDDEMIF = 3.3/2.75/1.8 V
        4. 5.7.6.4 EMIF Electrical Data and Timing CVDD = 1.3/1.4 V, DVDDEMIF = 3.3/2.75/1.8 V
      7. 5.7.7  General-Purpose Input/Output (GPIO)
        1. 5.7.7.1 GPIO Peripheral Input/Output Electrical Data and Timing
        2. 5.7.7.2 GPIO Peripheral Input Latency Electrical Data and Timing
      8. 5.7.8  Inter-Integrated Circuit (I2C)
        1. 5.7.8.1 I2C Electrical Data and Timing
      9. 5.7.9  Inter-IC Sound (I2S)
        1. 5.7.9.1 Inter-IC Sound (I2S) Electrical Data and Timing
      10. 5.7.10 Multichannel Serial Port Interface (McSPI)
        1. 5.7.10.1 McSPI Electrical Data and Timing
          1. 5.7.10.1.1 McSPI in Slave Mode
          2. 5.7.10.1.2 McSPI in Master Mode
      11. 5.7.11 Multichannel Buffered Serial Port (McBSP)
        1. 5.7.11.1 McBSP Electrical Data and Timing
      12. 5.7.12 Multimedia Card and Secure Digital (eMMC, MMC, SD, and SDHC)
        1. 5.7.12.1 MMC and SD Electrical Data and Timing
      13. 5.7.13 Real-Time Clock (RTC)
        1. 5.7.13.1 RTC Electrical Data and Timing
      14. 5.7.14 SAR ADC (10-Bit)
        1. 5.7.14.1 SAR ADC Electrical Data and Timing
      15. 5.7.15 Serial Port Interface (SPI)
        1. 5.7.15.1 SPI Electrical Data and Timing
      16. 5.7.16 Timers
      17. 5.7.17 Universal Asynchronous Receiver and Transmitter (UART)
        1. 5.7.17.1 UART Electrical Data and Timing [Receive and Transmit]
      18. 5.7.18 Universal Host-Port Interface (UHPI)
        1. 5.7.18.1 UHPI Electrical Data and Timing
      19. 5.7.19 Universal Serial Bus (USB) 2.0 Controller
        1. 5.7.19.1 USB 2.0 Electrical Data and Timing
      20. 5.7.20 Emulation and Debug
        1. 5.7.20.1 Debugging Considerations
          1. 5.7.20.1.1 Pullup and Pulldown Resistors
          2. 5.7.20.1.2 Bus Holders
          3. 5.7.20.1.3 CLKOUT Pin
      21. 5.7.21 IEEE 1149.1 JTAG
        1. 5.7.21.1 JTAG Test_port Electrical Data and Timing
  6. 6Detailed Description
    1. 6.1 CPU
    2. 6.2 Memory
      1. 6.2.1 Internal Memory
        1. 6.2.1.1 On-Chip Dual-Access RAM (DARAM)
        2. 6.2.1.2 On-Chip Single-Access RAM (SARAM)
        3. 6.2.1.3 On-Chip Read-Only Memory (ROM)
        4. 6.2.1.4 I/O Memory
      2. 6.2.2 External Memory
      3. 6.2.3 Memory Map
      4. 6.2.4 Register Map
        1. 6.2.4.1  DMA Peripheral Register Description
        2. 6.2.4.2  EMIF Peripheral Register Description
        3. 6.2.4.3  GPIO Peripheral Register Description
        4. 6.2.4.4  I2C Peripheral Register Description
        5. 6.2.4.5  I2S Peripheral Register Description
        6. 6.2.4.6  McBSP Peripheral Register Descriptions
        7. 6.2.4.7  McSPI Peripheral Register Descriptions
        8. 6.2.4.8  MMC and SD Peripheral Register Description
        9. 6.2.4.9  RTC Peripheral Register Description
        10. 6.2.4.10 SAR ADC Peripheral Register Description
        11. 6.2.4.11 SPI Peripheral Register Descriptions
        12. 6.2.4.12 System Registers
        13. 6.2.4.13 Timers Peripheral Register Description
        14. 6.2.4.14 UART Peripheral Register Description
        15. 6.2.4.15 UHPI Peripheral Register Descriptions
        16. 6.2.4.16 USB2.0 Peripheral Register Descriptions
    3. 6.3 Identification
      1. 6.3.1 JTAG Identification
    4. 6.4 Boot Modes
      1. 6.4.1 Invocation Sequence
      2. 6.4.2 DSP Resources Used By the Bootloader
  7. 7Device and Documentation Support
    1. 7.1 Device Support
      1. 7.1.1 Development Support
      2. 7.1.2 Device Nomenclature
    2. 7.2 Documentation Support
      1. 7.2.1 Related Documentation
    3. 7.3 Community Resources
    4. 7.4 Trademarks
    5. 7.5 Electrostatic Discharge Caution
    6. 7.6 Glossary
  8. 8Mechanical Packaging and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • ZCH|196
Thermal pad, mechanical data (Package|Pins)
Orderable Information

4 Terminal Configuration and Functions

4.1 Pin Diagram

Figure 4-1 shows the bottom view of the package pin assignments.

pinmap15_zch196_sprs127.gif
Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).
Figure 4-1 Pin Diagram

4.2 Signal Descriptions

The signal descriptions tables (Table 4-1 through Table 4-19) identify the external signal names, the associated pin (ball) numbers along with the mechanical package designator, the pin type, whether the pin has any internal pullup or pulldown resistors or bus-holders, and a functional pin description. For more information on pin multiplexing, see Section 4.3, Pin Multiplexing.

For proper device operation, external pullup and pulldown resistors may be required on some pins. Section 5.7.20.1.1, Pullup and Pulldown Resistors discusses situations where external pullup and pulldown resistors are required.

4.2.1 Oscillator and PLL

Table 4-1 Oscillator and PLL Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
CLKOUT A7 O/Z IPD
DVDDIO
BH
DSP clock output signal. For debug purposes, the CLKOUT pin can be used to tap different clocks within the system clock generator. The CLKOUT_SRC bits in the CLKOUT Configuration Register (CLKOUTCR) can be used to specify the CLKOUT pin source. Additionally, the slew rate of the CLKOUT pin can be controlled by the Output Slew Rate Control Register (OSRCR) [0x1C16].

The output driver of the CLKOUT pin is enabled and disabled through the CLKOFF bit in the CPU ST3_55 register. When disabled, the CLKOUT pin's output driver is placed in high-impedance (Hi-Z) and the IPD is automatically enabled. When enabled, the output driver of the pin is enabled and the IPD is automatically disabled.

At reset the CLKOUT pin is enabled until the beginning of the boot sequence, at which point the on-chip Bootloader sets CLKOFF = 1 and the CLKOUT pin is disabled (Hi-Z). For more information on the ST3_55 register, see the C55x 3.0 CPU Reference Guide [literature number: SWPU073].

The IPD resistor on this pin is enabled when CLKOUT is in Hi-Z state.

CLKIN A8 I IPD
DVDDIO
BH

Input clock. This signal is used to input an external clock when the 12-MHz on-chip USB oscillator is not used as the system clock (CLK_SEL = 1).

To appropriately set the various serial port frequencies during bootloading, the bootloader ROM code assumes CLKIN is running at the frequency indicated by the setting (see Section 6.4, Boot Modes, for the supported frequencies and details about the bootmode).

The CLK_SEL pin selects the source for the system clock generator, with the options being the USB oscillator (CLK_SEL=0) or CLKIN (CLK_SEL=1) pins.

When the CLK_SEL pin is low, this pin should be tied to ground (VSS). When CLK_SEL is high, this pin should be driven by an external clock source.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD disabled at reset.

CLK_SEL C7 I
DVDDIO
BH
Clock input select. This pin selects between the on-chip USB oscillator or CLKIN.

0 = The on-chip USB oscillator is enabled at reset and drives the system clock generator. The CLKIN is ignored. Also, the USB LDOO is enabled at reset (USB_LDO_EN=1). The on-chip USB oscillator and USB_LDO cannot be disabled if CLK_SEL=0.

1 = CLKIN drives the system clock generator. The on-chip USB oscillator and USB LDO are disabled at reset (USB_LDO_EN=1), but they can be enabled by software.

This pin is not allowed to change during device operation; it must be tied high or low at the board. 

VDDA_PLL C10 PWR see Section 5.2, ROC

1.3-V Analog PLL power supply for the system clock generator.

This supply pin must not be connected to ANA_LDOO pin. The supply pin must be externally powered.

VSSA_PLL D9 GND see Section 5.2, ROC Analog PLL ground for the system clock generator.
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.2 Real-Time Clock (RTC)

Table 4-2 RTC Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
RTC_XO A9 O/Z
CVDDRTC
DVDDRTC
Real-time clock oscillator output. This pin operates at the RTC core voltage, CVDDRTC, and supports a 32.768-kHz crystal.

If the RTC oscillator is not used, it can be disabled by connecting RTC_XI to CVDDRTC and RTC_XO to ground (VSS).

A voltage must still be applied to CVDDRTC by an external power source (see Section 5.2, Recommended Operating Conditions). None of the on-chip LDOs can power CVDDRTC.

Note: When RTC oscillator is disabled, the RTC registers (I/O address range 1900h – 197Fh) are not accessible.

RTC_XI B9 I
CVDDRTC
DVDDRTC
Real-time clock oscillator input.

If the RTC oscillator is not used, it can be disabled by connecting RTC_XI to CVDDRTC and RTC_XO to ground (VSS).

A voltage must still be applied to CVDDRTC by an external power source (see Section 5.2, Recommended Operating Conditions). None of the on-chip LDOs can power CVDDRTC.

Note: When RTC oscillator is disabled, the RTC registers (I/O address range 1900h – 197Fh) are not accessible. 

RTC_CLKOUT D8 O/Z
DVDDRTC

Real-time clock output pin. This pin operates at DVDDRTC voltage.

The RTC_CLKOUT pin is enabled and disabled through the RTCCLKOUTEN bit in the RTC Power Management Register (RTCPMGT).

At reset, the RTC_CLKOUT pin is disabled (high-impedance [Hi-Z]).

WAKEUP E8 I/O/Z
DVDDRTC
The active-high pin is used to WAKEUP the core from idle condition. This pin defaults to an input at CVDDRTC powerup, but can also be configured as an active-low open-drain output signal to wakeup an external device from an RTC alarm.
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.3 RESET, Interrupts, and JTAG

Table 4-3 RESET, Interrupts, and JTAG Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
RESET
XF M8 O/Z IPU
DVDDIO
BH
External Flag Output. XF is used for signaling other processors in multiprocessor configurations or XF can be used as a fast general-purpose output pin.

XF is set high by the BSET XF instruction and XF is set low by the BCLR XF instruction or by writing to bit 13 of the ST1_55 register. For more information on the ST1_55 register, see the C55x 3.0 CPU Reference Guide [literature number: SWPU073].

For the XF pin's states after reset, see Figure 5-9, BootMode Latching.

XF pin can manually configured as Hi-Z state only in boundary-scan mode. When this pin is in Hi-Z state, the IPU is enabled.

The IPU on this pin is disabled at reset.

RESET D6 I IPU
DVDDIO
BH
Device reset. RESET causes the DSP to terminate execution and loads the program counter with the contents of the reset vector. When RESET is brought to a high level, the reset vector in ROM at FFFF00h forces the program execution to branch to the location of the on-chip ROM bootloader.

RESET affects the various registers and status bits.

The IPU resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h).

The IPU is disabled at reset.

JTAG
For more detailed information on emulation header design guidelines, see the XDS560 Emulator Technical Reference [literature number: SPRU589].
TMS L8 I IPU
DVDDIO
BH
IEEE standard 1149.1 test mode select. This serial control input is clocked into the TAP controller on the rising edge of TCK.

If the emulation header is located greater than 6 inches from the device, TMS must be buffered. In this case, the input buffer for TMS needs a pullup resistor connected to DVDDIO to hold the signal at a known value when the emulator is not connected. A resistor value of 4.7 kΩ or greater is suggested. For board design guidelines related to the emulation header, see the XDS560 Emulator Technical Reference [literature number: SPRU589].

The IPU resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPU is enabled at reset.

TDO M7 I/O/Z IPU
DVDDIO
BH
IEEE standard 1149.1 test data output. The contents of the selected register (instruction or data) are shifted out of TDO on the falling edge of TCK. TDO is in the high-impedance (Hi-Z) state except when the scanning of data is in progress.

For board design guidelines related to the emulation header, see the XDS560 Emulator Technical Reference [literature number: SPRU589].

If the emulation header is located greater than 6 inches from the device, TDO must be buffered.

Despite the fact that the IEEE 1149.1 (JTAG) standard defines the TDO pin as a 3-state output (O/Z), this device has a bidirectional IO-cell. The bidirectional cell's input buffer is used for non-JTAG production test purposes. To achieve the lowest power, this input buffer must not be allowed to float.

The IEEE standard defines the pin as tri-stated in the Test-Logic-Reset state and our device obeys that requirement. Therefore, to achieve the lowest power the IPU should remain enabled.

The IPU resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPU is enabled at reset.

TDI L7 I IPU
DVDDIO
BH
IEEE standard 1149.1 test data input. TDI is clocked into the selected register (instruction or data) on a rising edge of TCK.

If the emulation header is located greater than 6 inches from the device, TDI must be buffered. In this case, the input buffer for TDI needs a pullup resistor connected to DVDDIO to hold this signal at a known value when the emulator is not connected. A resistor value of 4.7 kΩ or greater is suggested.

The IPU resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPU is enabled at reset.

TCK M6 I IPU
DVDDIO
BH
IEEE standard 1149.1 test clock. TCK is normally a free-running clock signal with a 50% duty cycle. The changes on input signals TMS and TDI are clocked into the TAP controller, instruction register, or selected test data register on the rising edge of TCK. Changes at the TAP output signal (TDO) occur on the falling edge of TCK.

If the emulation header is located greater than 6 inches from the device, TCK must be buffered.

For board design guidelines related to the emulation header, see the XDS560 Emulator Technical Reference [literature number: SPRU589].

The IPU resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPU is enabled at reset.

TRST M9 I IPD
DVDDIO
BH
IEEE standard 1149.1 reset signal for test and emulation logic. TRST, when high, allows the IEEE standard 1149.1 scan and emulation logic to take control of the operations of the device. If TRST is not connected or is driven low, the device operates in its functional mode, and the IEEE standard 1149.1 signals are ignored. The device will not operate properly if this reset pin is never asserted low.

For board design guidelines related to the emulation header, see the XDS560 Emulator Technical Reference [literature number: SPRU589].

It is recommended that an external pulldown resistor be used in addition to the IPD -- especially if there is a long trace to an emulation header.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is enabled at reset.

EMU1 M5 I/O/Z IPU
DVDDIO
BH
Emulator 1 pin. EMU1 is used as an interrupt to or from the emulator system and is defined as input/output by way of the emulation logic.

For board design guidelines related to the emulation header, see the XDS560 Emulator Technical Reference [literature number: SPRU589].

An external pullup to DVDDIO is required to provide a signal rise time of less than 10 µsec. A 4.7-kΩ resistor is suggested for most applications.

For board design guidelines related to the emulation header, see the XDS560 Emulator Technical Reference [literature number: SPRU589].

The IPU resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPU is enabled at reset.

EMU0 L6 I/O/Z IPU
DVDDIO
BH
Emulator 0 pin. When TRST is driven low and then high, the state of the EMU0 pin is latched and used to connect the JTAG pins (TCK, TMS, TDI, TDO) to either the IEEE1149.1 Boundary-Scan TAP (when the latched value of EMU0 = 0) or to the DSP Emulation TAP (when the latched value of EMU0 = 1). Once TRST is high, EMU0 is used as an interrupt to or from the emulator system and is defined as input/output by way of the emulation logic.

An external pullup to DVDDIO is required to provide a signal rise time of less than 10 µsec. A 4.7-kΩ resistor is suggested for most applications.

For board design guidelines related to the emulation header, see the XDS560 Emulator Technical Reference [literature number: SPRU589].

The IPU resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPU is enabled at reset.

EXTERNAL INTERRUPTS
INT1 E7 I IPU
DVDDIO
BH
External interrupt inputs (INT1 and INT0). These pins are maskable via their specific Interrupt Mask Register (IMR1, IMR0) and the interrupt mode bit. The pins can be polled and reset by their specific Interrupt Flag Register (IFR1, IFR0).

The IPU resistor on these pins can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPU is disabled at reset.

INT0 C6 I IPU
DVDDIO
BH
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.4 External Memory Interface (EMIF)

Table 4-4 EMIF Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
EMIF FUNCTIONAL PINS: ASYNC (NOR, SRAM, and NAND)
Note: When accessing 8-bit Asynchronous memory:
  • Connect EM_A[20:0] to memory address pins [22:2]
  • Connect EM_BA[1:0] to memory address pins [1:0]
For 16-bit Asynchronous memory:
  • Connect EM_A[20:1] to memory address pins [20:1]
  • Connect EM_BA[1] to memory address pin [0]
GP[26]/
EM_A[20]
J3 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF external address pin 20.

Mux control via the A20_MODE bit in the EBSR (see Figure 5-10).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[25]/
EM_A[19]
G4 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF external address pin 19.

Mux control via the A19_MODE bit in the EBSR (see Figure 5-10).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[24]/
EM_A[18]
G2 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF external address pin 18.

Mux control via the A18_MODE bit in the EBSR (see Figure 5-10).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[23]/
EM_A[17]
F2 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF external address pin 17.

Mux control via the A17_MODE bit in the EBSR (see Figure 5-10).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[22]/
EM_A[16]
E2 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF external address pin 16.

Mux control via the A16_MODE bit in the EBSR (see Figure 5-10).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[21]/
EM_A[15]
N1 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO. For EMIF, this pin is the EMIF external address pin 15.

Mux control via the A15_MODE bit in the EBSR (see Figure 5-10).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

EM_A[14] M1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 14.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[13] L1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 13.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[12]/
(CLE)
K1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 12. When interfacing with NAND Flash, this pin also acts as Command Latch Enable (CLE).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[11]/
(ALE)
K2 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 11. When interfacing with NAND Flash, this pin also acts as Address Latch Enable (ALE).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[10] L2 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 10.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[9] J2 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 9.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[8] J1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 8.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[7] H2 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 7.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[6] F1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 6.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[5] D1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 5.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[4] C1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 4.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[3] D2 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 3.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[2] E1 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 2.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[1] C2 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 1.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_A[0] B2 I/O/Z IPD
DVDDEMIF
BH

This pin is the EMIF external address pin 0.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR5 (1C4Dh) register.

The IPD is disabled at reset.

EM_D[15] J4 I/O/Z IPD
DVDDEMIF
BH

EMIF 16-bit bidirectional bus.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR4 (1C4Ch) register.

The IPD is disabled at reset.

EM_D[14] K3
EM_D[13] K4
EM_D[12] L3
EM_D[11] C4
EM_D[10] D3
EM_D[9] F4
EM_D[8] E3
EM_D[7] H3
EM_D[6] K5
EM_D[5] M2
EM_D[4] L4
EM_D[3] D4
EM_D[2] F3
EM_D[1] E5
EM_D[0] G3
EM_CS5 A3 O/Z IPD
DVDDEMIF
BH

EMIF chip select 5 output for use with asynchronous memories (that is, NOR flash, NAND flash, or SRAM).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_CS4 C3 O/Z IPD
DVDDEMIF
BH

EMIF chip select 4 output for use with asynchronous memories (that is, NOR flash, NAND flash, or SRAM).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_CS3 M4 O/Z IPD
DVDDEMIF
BH

EMIF NAND chip select 3 output for use with asynchronous memories (that is, NOR flash, NAND flash, or SRAM).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_CS2 C5 O/Z IPD
DVDDEMIF
BH

EMIF NAND chip select 2 output for use with asynchronous memories (that is, NOR flash, NAND flash, or SRAM).

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_WE H1 O/Z IPD
DVDDEMIF
BH

EMIF asynchronous memory write enable output

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_OE E4 O/Z IPD
DVDDEMIF
BH

EMIF asynchronous memory read enable output

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_R/W B6 O/Z IPD
DVDDEMIF
BH

EMIF asynchronous read and write output

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_DQM1/
UHPI_HBE1
P1 I/O/Z IPD
DVDDEMIF
BH

These pins are multiplexed between EMIF and UHPI. For EMIF, asynchronous data write strobes and byte enables or EMIF SDRAM and mSDRAM data mask bits.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on these pins can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_DQM0/
UHPI_HBE0
B5 I/O/Z IPD
DVDDEMIF
BH
EM_BA[1] B1 O/Z IPD
DVDDEMIF
BH
EMIF asynchronous bank address

16-bit wide memory: EM_BA[1] forms the device address[0] and BA[0] forms device address [23].

8-bit wide memory: EM_BA[1] forms the device address[1] and BA[0] forms device address [0].

EMIF SDRAM and mSDRAM bank address.

The IPD resistor on these pins can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_BA[0] A1 O/Z IPD
DVDDEMIF
BH
EM_WAIT5 H4 I IPD
DVDDEMIF
BH

EMIF wait state extension input 5 for EM_CS5

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is enabled at reset.

EM_WAIT4 G1 I IPD
DVDDEMIF
BH

EMIF wait state extension input 4 for EM_CS4

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is enabled at reset.

EM_WAIT3 K6 I IPD
DVDDEMIF
BH

EMIF wait state extension input 3 for EM_CS3

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is enabled at reset.

EM_WAIT2 D5 I IPD
DVDDEMIF
BH

EMIF wait state extension input 2 for EM_CS2

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is enabled at reset.

EMIF FUNCTIONAL PINS: SDRAM and mSDRAM ONLY
EM_CS1/
UHPI_HDS2
A4 I/O/Z IPD
DVDDEMIF
BH

This pin is multiplexed between EMIF and UHPI. For EMIF, SDRAM and mSDRAM chip select 1 output

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

EM_CS0/
UHPI_HDS1
B3 I/O/Z IPD
DVDDEMIF
BH

This pin is multiplexed between EMIF and UHPI. For EMIF, SDRAM and mSDRAM chip select 0 output

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

EM_SDCLK M3 O/Z IPD
DVDDEMIF
BH

EMIF SDRAM and mSDRAM clock

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

EM_SDCKE/
UHPI_HHWIL
N2 I/O/Z IPD
DVDDEMIF
BH

This pin is multiplexed between EMIF and UHPI. For EMIF, SDRAM and mSDRAM clock enable

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

EM_SDRAS/
UHPI_HAS
A6 I/O/Z IPD
DVDDEMIF
BH

This pin is multiplexed between EMIF and UHPI. For EMIF, SDRAM and mSDRAM row address strobe

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

EM_SDCAS/
UHPI_HCS
B4 I/O/Z IPD
DVDDEMIF
BH

This pin is multiplexed between EMIF and UHPI. For EMIF, SDRAM and mSDRAM column strobe

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.5 Inter-Integrated Circuit (I2C)

Table 4-5 Inter-Integrated Circuit (I2C) Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
I2C
SCL B7 I/O/Z
DVDDIO
BH
This pin is the I2C clock output. Per the I2C standard, an external pullup is required on this pin.
SDA B8 I/O/Z
DVDDIO
BH
This pin is the I2C bidirectional data signal. Per the I2C standard, an external pullup is required on this pin.
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.6 Inter-IC Sound (I2S)

Table 4-6 Inter-IC Sound (I2S0, I2S2, and I2S3) Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
Interface 0 (I2S0)
MMC0_D0/
I2S0_DX/
GP[2]/
McBSP_DX
L9 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For I2S, it is I2S0 transmit data output I2S0_DX.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_CLK/
I2S0_CLK/
GP[0]/
McBSP_CLKX
L10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For I2S, it is I2S0 clock input/output I2S0_CLK.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D1/
I2S0_RX/
GP[3]/
McBSP_DR
M10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For I2S, it is I2S0 receive data input I2S0_RX.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_CMD/
I2S0_FS/
GP[1]/
McBSP_FSX
M11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For I2S, it is I2S0 frame synchronization input/output I2S0_FS.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

Interface 1 (I2S2)
I2S2_DX/
UHPI_HD[11]/

GP[27]/
SPI_TX
P12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

For I2S, it is I2S2 transmit data output I2S2_DX.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

I2S2_CLK/
UHPI_HD[8]/

GP[18]/
SPI_CLK
N10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

For I2S, it is I2S2 clock input/output I2S2_CLK.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_RX/
UHPI_HD[10]/

GP[20]/
SPI_RX
N11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, I2S2, GPIO, and SPI.

For I2S, it is I2S2 receive data input I2S2_RX.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_FS/
UHPI_HD[9]/

GP[19]/
SPI_CS0
P11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

For I2S, it is I2S2 frame synchronization input/output I2S2_FS.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

Interface 2 (I2S3)
UART_TXD/
UHPI_HD[15]/

GP[31]/
I2S3_DX
P14 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

For I2S, it is I2S3 transmit data output I2S3_DX.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

UART_RTS/
UHPI_HD[12]/

GP[28]/
I2S3_CLK
N12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

For I2S, it is I2S3 clock input/output I2S3_CLK.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

UART_RXD/
UHPI_HD[14]/

GP[30]/
I2S3_RX
N13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

For I2S, it is I2S3 receive data input I2S3_RX.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

UART_CTS/
UHPI_HD[13]/

GP[29]/
I2S3_FS
P13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed betweenUART, UHPI, GPIO, and I2S3.

For I2S, it is I2S3 frame synchronization input/output I2S3_FS.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.7 Multichannel Buffered Serial Port (McBSP)

Table 4-7 McBSP Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
McBSP
MMC0_CLK/
I2S0_CLK/
GP[0]/
McBSP_CLKX
L10 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For McBSP, this is the McBSP transmit clock, McBSP_CLKX.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_CMD/
I2S0_FS/
GP[1]/
McBSP_FSX
M11 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For McBSP, this is the McBSP transmit frame sync, McBSP_FSX.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D0/
I2S0_DX/
GP[2]/
McBSP_DX
L9 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For McBSP, this is the McBSP transmit data , McBSP_DX.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D1/
I2S0_RX/
GP[3]/
McBSP_DR
M10 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC0, I2S0, McBSP and GPIO.

For McBSP, this is the McBSP receive data, McBSP_RX.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D2/
GP[4]/
McBSP_FSR
L12 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC0, McBSP and GPIO.

For McBSP, this is the McBSP receive frame sync, McBSP_FSR.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D3/
GP[5]/
McBSP_CLKR_
CLKS
L11 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC0, McBSP and GPIO.

For McBSP, this is the McBSP receive clock, McBSP_CLKR or the McBSP sample rate generator clock input, McBSP_CLKS. The bit 15 of EBSR register determines this port to be McBSP_CLKR or McBSP_CLKS.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.8 Multichannel Serial Port Interface (McSPI)

Table 4-8 McSPI Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
McSPI
MMC1_CLK/
McSPI_CLK/
GP[6]
M13 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC1, McSPI and GPIO.

For McSPI, this is the McSPI data clock, McSPI_CLK.

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_CMD/
McSPI_CS0/
GP[7]
L14 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC1, McSPI and GPIO.

For McSPI, this is the McSPI chip select 0 signal, McSPI_CS0.

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D0/
McSPI_SIMO/
GP[8]
M14 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC1, McSPI and GPIO.

For McSPI, this is the McSPI data, McSPI_SIMO (Slave Input Master Output).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D1/
McSPI_SOMI/
GP[9]
M12 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC1, McSPI and GPIO.

For McSPI, this is the McSPI data, McSPI_SOMI (Slave Output Master Input).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D2/
McSPI_CS1/
GP[10]
K14 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC1, McSPI and GPIO.

For McSPI, this is the McSPI chip select 1 signal, McSPI_CS1.

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D3/
McSPI_CS2/
GP[11]
L13 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between MMC1, McSPI and GPIO.

For McSPI, this is the McSPI chip select 2 signal, McSPI_CS2.

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.9 Serial Peripheral Interface (SPI)

Table 4-9 SPI Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
Serial Port Interface (SPI)
SPI_CS0/
UHPI_HCNTL0
P4 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and SPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is SPI chip select SPI_CS0.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

I2S2_FS/
UHPI_HD[9]/

GP[19]/
SPI_CS0
P11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is SPI chip select SPI_CS0.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

SPI_CS1/
UHPI_HCNTL1
N4 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between SPI and UHPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is SPI chip select SPI_CS1.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

SPI_CS2/
UHPI_HR_NW
P5 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between SPI and UHPI.

For SPI, this pin is SPI chip select SPI_CS2.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

SPI_CS3/
UHPI_HRDY
N5 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between SPI and UHPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is SPI chip select SPI_CS3.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

SPI_CLK/
UHPI_HINT
N3 O/Z IPD
DVDDIO
BH

This pin is multiplexed between SPI and UHPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is clock output SPI_CLK.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

I2S2_CLK/
UHPI_HD[8]/

GP[18]/
SPI_CLK
N10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is clock output SPI_CLK.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

SPI_TX/
UHPI_HD[1]
N6 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between UHPI and SPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is SPI transmit data output.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_DX/
UHPI_HD[11]/

GP[27]/
SPI_TX
P12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

Mux control via the PPMODE bits in the EBSR.

For SPI, this pin is SPI transmit data output.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

SPI_RX/
UHPI_HD[0]
P6 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between SPI and UHPI.

Mux control via the PPMODE bits in the EBSR.

For SPI this pin is SPI receive data input.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_RX/
UHPI_HD[10]/

GP[20]/
SPI_RX
N11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

Mux control via the PPMODE bits in the EBSR.

For SPI this pin is SPI receive data input.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.10 Universal Asynchronous Receiver and Transmitter (UART)

Table 4-10 UART Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
UART
UART_RXD/
UHPI_HD[14]
/
GP[30]/
I2S3_RX
N13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

When used by UART, it is the receive data input UART_RXD.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

UART_TXD/
UHPI_HD[15]/

GP[31]/
I2S3_DX
P14 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

In UART mode, it is the transmit data output UART_TXD.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

UART_CTS/
UHPI_HD[13]/

GP[29]/
I2S3_FS
P13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

In UART mode, it is the clear to send input UART_CTS.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

UART_RTS/
UHPI_HD[12]/

GP[28]/
I2S3_CLK
N12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

In UART mode, it is the ready to send output UART_RTS.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.11 Universal Serial Bus (USB) 2.0

Table 4-11 USB2.0 Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
USB 2.0
USB_MXI G13 I USB_VDDOSC 12-MHz crystal oscillator input used for the USB subsystem and optionally for the system clock generator.

If CLK_SEL=0, the USB oscillator is enabled at reset and is used as the clock source for the system clock generator. In this configuration (CLK_SEL=0), the USB oscillator cannot be disabled.

If CLK_SEL=1, the USB oscillator is disabled at reset and the CLKIN pin is used as the source for the system clock generator. In this configuration (CLK_SEL=1), the USB oscillator can be enabled or disabled via software.

When using an external 12-MHz oscillator, the external oscillator clock signal should be connected to the USB_MXI pin and the amplitude of the oscillator clock signal must meet the VIH requirement (see Section 5.2, Recommended Operating Conditions). The USB_MXO is left unconnected and the USB_VSSOSC signal is connected to board ground (VSS).

USB_MXO G14 O USB_VDDOSC 12-MHz crystal oscillator output used for the USB subsystem and optionally for the system clock generator.

If CLK_SEL=0, the USB oscillator is enabled at reset and is used as the clock source for the system clock generator. In this configuration (CLK_SEL=0), the USB oscillator cannot be disabled.

If CLK_SEL=1, the USB oscillator is disabled at reset and the CLKIN pin is used as the source for the system clock generator. In this configuration (CLK_SEL=1), the USB oscillator can be enabled or disabled via software.

When using an external 12-MHz oscillator, the external oscillator clock signal should be connected to the USB_MXI pin and the amplitude of the oscillator clock signal must meet the VIH requirement (see Section 5.2, Recommended Operating Conditions). The USB_MXO is left unconnected and the USB_VSSOSC signal is connected to board ground (VSS).

USB_VDDOSC G12 S see Section 5.2, ROC 3.3-V power supply for USB oscillator.

When the USB peripheral is not used, USB_VDDOSC should be connected to ground (VSS).

USB_VSSOSC F11 S see Section 5.2, ROC Ground for USB oscillator. When using a 12-MHz crystal, this pin is a local ground for the crystal and must not be connected to the board ground (See Figure 5-11).

When using an external 12-MHz oscillator, the external oscillator clock signal should be connected to the USB_MXI pin and the amplitude of the oscillator clock signal must meet the VIH requirement (see Section 5.2, Recommended Operating Conditions). The USB_MXO is left unconnected and the USB_VSSOSC signal is connected to board ground (VSS).

USB_VBUS J12 A see Section 5.2, ROC USB power detect. 5-V input that signifies that VBUS is connected.

This signal must be powered on in the order listed in Section 5.7.2.2, Power-Supply Sequencing.

When the USB peripheral is not used, the USB_VBUS signal should be connected to ground (VSS).

USB_DP H14 A I/O USB_VDDA3P3 USB bidirectional Data Differential signal pair [positive and negative].

When the USB peripheral is not used, the USB_DP and USB_DM signals should both be tied to ground (VSS).

USB_DM J14 A I/O USB_VDDA3P3
USB_R1 G9 A I/O USB_VDDA3P3 External resistor connect. Reference current output. This pin must be connected via a 10-kΩ ±1% resistor to USB_VSSREF and be placed as close to the device as possible.

When the USB peripheral is not used, the USB_R1 signal should be connected via a 10-kΩ resistor to USB_VSSREF.

USB_VSSREF G10 GND see Section 5.2, ROC Ground for reference current. This must be connected via a 10-kΩ ±1% resistor to USB_R1.

When the USB peripheral is not used, the USB_VSSREF signal should be connected directly to ground (Vss).

USB_VDDA3P3 H12 S see Section 5.2, ROC Analog 3.3 V power supply for USB PHY.

This signal must be powered on in the order listed in Section 5.7.2.2, Power-Supply Sequencing.

When the USB peripheral is not used, the USB_VDDA3P3 signal should be connected to ground (VSS).

USB_VSSA3P3 H11 GND see Section 5.2, ROC Analog ground for USB PHY.
USB_VDDA1P3 H10 S see Section 5.2, ROC Analog 1.3 V power supply for USB PHY. [For high-speed sensitive analog circuits]

This signal must be powered on in the order listed in Section 5.7.2.2, Power-Supply Sequencing.

When the USB peripheral is not used, the USB_VDDA1P3 signal should be connected to ground (VSS).

USB_VSSA1P3 H9 GND see Section 5.2, ROC Analog ground for USB PHY [For high speed sensitive analog circuits].
USB_VDD1P3 J13 S see Section 5.2, ROC 1.3-V digital core power supply for USB PHY.

This signal must be powered on in the order listed in Section 5.7.2.2, Power-Supply Sequencing.

When the USB peripheral is not used, the USB_VDD1P3 signal should be connected to ground (VSS).

USB_VSS1P3 H13 GND see Section 5.2, ROC Digital core ground for USB PHY.
USB_VDDPLL G8 S see Section 5.2, ROC

3.3 V USB Analog PLL power supply.

Care should be taken to prevent noise on this supply. Consider using a ferrite bead if the power supply for this pin is shared with digital logic. See the Filtering Techniques Application Report [literature number: SCAA048] for more information.

When the USB peripheral is not used, the USB_VDDPLL signal should be connected to ground (VSS).

USB_VSSPLL G11 GND see Section 5.2, ROC USB Analog PLL ground.
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.12 Universal Host-Port Interface (UHPI)

Table 4-12 UHPI Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
SPI_CLK/
UHPI_HINT
N3 O/Z IPD
DVDDIO
BH
This pin is multiplexed between SPI and UHPI.

For UHPI, this pin is UHPI host interrupt, UHPI_HINT.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

SPI_CS0/
UHPI_HCNTL0
P4 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between SPI and UHPI.

For UHPI, this pin is UHPI access control, UHPI_HCNTL0.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

SPI_CS1/
UHPI_HCNTL1
N4 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between SPI and UHPI.

For UHPI, this pin is UHPI access control, UHPI_HCNTL1.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

SPI_CS2/
UHPI_HR_NW
P5 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between SPI and UHPI.

For UHPI this pin is UHPI read and write, UHPI_HR_NW.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

SPI_CS3/
UHPI_HRDY
N5 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between SPI and UHPI.

For UHPI, this pin is the UHPI ready, UHPI_HRDY.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

UART_TXD/
UHPI_HD[15]/
GP[31]/
I2S3_DX
P14 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

UART_RXD/
UHPI_HD[14]/
GP[30]/
I2S3_RX
N13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

UART_CTS/
UHPI_HD[13]/
GP[29]/
I2S3_FS
P13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

UART_RTS/
UHPI_HD[12]/
GP[28]/
I2S3_CLK
N12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

I2S2_DX/
UHPI_HD[11]/
GP[27]/
SPI_TX
P12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

I2S2_RX/
UHPI_HD[10]/
GP[20]/
SPI_RX
N11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_FS/
UHPI_HD[9]/
GP[19]/
SPI_CS0
P11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_CLK/
UHPI_HD[8]/
GP[18]/
SPI_CLK
N10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI, UART, SPI, I2S, and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[17]/
UHPI_HD[7]
P10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[16]/
UHPI_HD[6]
N9 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[15]/
UHPI_HD[5]
P9 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[14]/
UHPI_HD[4]
N8 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[13]/
UHPI_HD[3]
N7 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[12]/
UHPI_HD[2]
P7 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and GPIO.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

SPI_TX/
UHPI_HD[1]
N6 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and SPI.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

SPI_RX/
UHPI_HD[0]
P6 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UHPI and SPI.

For UHPI, this pin is the UHPI data bus, UHPI_HD[15:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

EM_DQM1/
UHPI_HBE1
P1 I/O/Z IPD
DVDDIO
BH

These two pins are multiplexed between UHPI and SDRAM.

For UHPI, these two pins are UHPI Byte Enables, UHPI_HBE[1:0].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on these pins can be enabled or disabled via the PUDINHIBR6 (1C4Fh) register.

The IPD is disabled at reset.

EM_DQM0/
UHPI_HBE0
B5 I/O/Z IPD
DVDDIO
BH
EM_CS1/
UHPI_HDS2
A4 I/O/Z IPD
DVDDIO
BH

These two pins are multiplexed between UHPI and SDRAM.

For UHPI, these two pins are UHPI data strobe pins, UHPI_HDS[2:1].

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on these pins can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

EM_CS0/
UHPI_HDS1
B3 I/O/Z IPD
DVDDIO
BH
EM_SDCKE/
UHPI_HHWIL
N2 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between UHPI and SDRAM.

For UHPI, this pin is Half-word Identification control input pin, UHPI_HHWIL.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

EM_SDRAS/
UHPI_HAS
A6 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between UHPI and SDRAM.

For UHPI, this pin is address strobe pin, UHPI_HAS.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

EM_SDCAS/
UHPI_HCS
B4 I/O/Z IPD
DVDDIO
BH

This pin is multiplexed between UHPI and SDRAM.

For UHPI, this pin is chip select pin, UHPI_HCS.

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR7 (1C50h) register.

The IPD is disabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.13 MultiMedia Card (MMC)

Table 4-13 MMC1 and SD Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
MMC and SD
MMC1_CLK/
McSPI_CLK/
GP[6]
M13 O IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For MMC and SD, this is the MMC1 data clock output MMC1_CLK.

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_CMD/
McSPI_CS0/
GP[7]
L14 O IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For MMC and SD, this is the MMC1 command I/O output MMC1_CMD.

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D3/
McSPI_CS2/
GP[11]
L13 I/O/Z IPD
DVDDIO
BH

These pins are multiplexed between MMC1, McSPI, and GPIO.

In MMC and SD mode, all these pins are the MMC1 nibble wide bidirectional data bus.

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on these pins can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D2/
McSPI_CS1/
GP[10]
K14 I/O/Z IPD
DVDDIO
BH
MMC1_D1/
McSPI_SOMI/
GP[9]
M12 I/O/Z IPD
DVDDIO
BH
MMC1_D0/
McSPI_SIMO/
GP[8]
M14 I/O/Z IPD
DVDDIO
BH
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

Table 4-14 MMC0 and SD Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
MMC and SD
MMC0_CLK/
I2S0_CLK/
GP[0]/
McBSP_CLKX
L10 O IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP, and GPIO.

For MMC and SD, this is the MMC0 data clock output MMC0_CLK.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_CMD/
I2S0_FS/
GP[1]/
McBSP_FSX
M11 O IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP, and GPIO.

For MMC and SD, this is the MMC0 command I/O output MMC0_CMD.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D3/
GP[5]/
McBSP_CLKR_
CLKS
L11 I/O/Z IPD
DVDDIO
BH

These pins are multiplexed between MMC0, I2S0, McBSP and GPIO

In MMC and SD mode, these pins are the MMC0 nibble wide bidirectional data bus.

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on these pins can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D2/
GP[4]/
McBSP_FSR
L12 I/O/Z IPD
DVDDIO
BH
MMC0_D1/
I2S0_RX/
GP[3]/
McBSP_DR
M10 I/O/Z IPD
DVDDIO
BH
MMC0_D0/
I2S0_DX/
GP[2]/
McBSP_DX
L9 I/O/Z IPD
DVDDIO
BH
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.14 Successive Approximation (SAR) Analog-to-Digital Converter (ADC)

Table 4-15 10-Bit SAR ADC Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
SAR ADC
GPAIN0 D10 I/O VDDA_ANA GPAIN0: General -Purpose Output and Analog Input pin 0. This pin is demuxed internally into ADC Channels 0, 1, and 2. GPAIN0 can also be used as a general-purpose open-drain output. This pin is unique among the GPAIN pins in that it is the only pin that is 3.6 V-tolerant to support measuring a battery voltage. GPAIN0 can accommodate input voltages from 0 V to 3.6 V; although, the ADC is unable to accept signals greater than VDDA_ANA without clamping. ADC Channel 1 is capable of switching in an internal resistor divider that has a divide ratio of approximately 1/8.
GPAIN1 A11 I/O VDDA_ANA GPAIN1: General -Purpose Output and Analog Input pin 1. This pin is connected to ADC Channel 3. GPAIN1 can be used as a general-purpose output if certain requirements are met (see the following note). GPAIN1 can accommodate input voltages from 0 V to VDDA_ANA.

Note: If the ANA_LDO is used to supply power to VDDA_ANA, this pin must not be used as a general-purpose output (driving high) since the max current capability (see the ISD parameter in Section 5.3.2, Electrical Characteristics) of the ANA_LDO can be exceeded. Doing so may result in the on-chip power-on reset (POR) resetting the chip.

GPAIN2 B11 I/O VDDA_ANA GPAIN2: General -Purpose Output and Analog Input pin 2. This pin is connected to ADC Channel 4. GPAIN2 can be used as a general-purpose output if certain requirements are met (see the following note). GPAIN2 can accommodate input voltages from 0 V to VDDA_ANA.

Note: If the ANA_LDO is used to supply power to VDDA_ANA, this pin must not be used as a general-purpose output (driving high) since the max current capability (see the ISD parameter in Section 5.3.2, Electrical Characteristics) of the ANA_LDO can be exceeded. Doing so may result in the on-chip POR resetting the chip.

GPAIN3 C11 I/O VDDA_ANA GPAIN3: General -Purpose Output and Analog Input pin 3. This pin is connected to ADC Channel 5. GPAIN3 can be used as a general-purpose output if certain requirements are met (see the following note). GPAIN3 can accommodate input voltages from 0 V to VDDA_ANA.

Note: If the ANA_LDO is used to supply power to VDDA_ANA, this pin must not be used as a general-purpose output (driving high) since the max current capability (see the ISD parameter in Section 5.3.2, Electrical Characteristics) of the ANA_LDO can be exceeded. Doing so may result in the on-chip POR resetting the chip.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.15 General-Purpose Input and Output (GPIO)

Table 4-16 GPIO Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME(5) NO.
General-Purpose Input/Output
XF M8 O/Z IPU
DVDDIO
BH
External Flag Output. XF is used for signaling other processors in multiprocessor configurations or XF can be used as a fast general-purpose output pin.

XF is set high by the BSET XF instruction and XF is set low by the BCLR XF instruction or by writing to bit 13 of the ST1_55 register. For more information on the ST1_55 register, see the C55x 3.0 CPU Reference Guide [literature number: SWPU073].

For the XF pin's states after reset, see Figure 5-9, BootMode Latching.

XF pin can manually configured as Hi-Z state only in boundary-scan mode. When this pin is in Hi-Z state, the IPU is enabled.

The IPU on this pin is disabled at reset.

MMC0_CLK/
I2S0_CLK/
GP[0]/
McBSP_CLKX
L10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP, and GPIO.

For GPIO, it is general-purpose input/output pin 0 (GP[0]).

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_CMD/
I2S0_FS/
GP[1]/
McBSP_FSX
M11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP, and GPIO.

For GPIO, it is general-purpose input/output pin 1 (GP[1]).

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D0/
I2S0_DX/
GP[2]/
McBSP_DX
L9 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP, and GPIO.

For GPIO, it is general-purpose input/output pin 2 (GP[2]).

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D1/
I2S0_RX/
GP[3]/
McBSP_DR
M10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, I2S0, McBSP, and GPIO.

For GPIO, it is general-purpose input/output pin 3 (GP[3]).

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D2/
GP[4]/
McBSP_FSR
L12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, McBSP, and GPIO.

For GPIO, it is general-purpose input/output pin 4 (GP[4]).

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC0_D3/
GP[5]/
McBSP_CLKR_
CLKS
L11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC0, McBSP, and GPIO.

For GPIO, it is general-purpose input/output pin 5 (GP[5]).

Mux control via the SP0MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_CLK/
McSPI_CLK/
GP[6]
M13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For GPIO, it is general-purpose input/output pin 6 (GP[6]).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_CMD/
McSPI_CS0/
GP[7]
L14 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For GPIO, it is general-purpose input/output pin 7 (GP[7]).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D0/
McSPI_SIMO/
GP[8]
M14 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For GPIO, it is general-purpose input/output pin 8 (GP[8]).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D1/
McSPI_SOMI/
GP[9]
M12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For GPIO, it is general-purpose input/output pin 9 (GP[9]).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D2/
McSPI_CS1/
GP[10]
K14 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For GPIO, it is general-purpose input/output pin 10 (GP[10]).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

MMC1_D3/
McSPI_CS2/
GP[11]
L13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between MMC1, McSPI, and GPIO.

For GPIO, it is general-purpose input/output pin 11 (GP[11]).

Mux control via the SP1MODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR1 (1C17h) register.

The IPD is disabled at reset.

GP[12]/
UHPI_HD[2]
P7 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between GPIO and UHPI.

For GPIO, it is general-purpose input/output pin 12 (GP[12]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[13]/
UHPI_HD[3]
N7 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between GPIO and UHPI.

For GPIO, it is general-purpose input/output pin 13 (GP[13]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[14]/
UHPI_HD[4]
N8 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between GPIO and UHPI.

For GPIO, it is general-purpose input/output pin 14 (GP[14]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[15]/
UHPI_HD[5]
P9 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between GPIO and UHPI.

For GPIO, it is general-purpose input/output pin 15 (GP[15]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[16]/
UHPI_HD[6]
N9 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between GPIO and UHPI.

For GPIO, it is general-purpose input/output pin 16 (GP[16]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[17]/
UHPI_HD[7]
P10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between GPIO and UHPI.

For GPIO, it is general-purpose input/output pin 17 (GP[17]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_CLK/
UHPI_HD[8]/

GP[18]/
SPI_CLK
N10 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

For GPIO, it is general-purpose input/output pin 18 (GP[18]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_FS/
UHPI_HD[9]/

GP[19]/
SPI_CS0
P11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO and SPI.

For GPIO, it is general-purpose input/output pin 19 (GP[19]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

I2S2_RX/
UHPI_HD[10]/

GP[20]/
SPI_RX
N11 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO and SPI.

For GPIO, it is general-purpose input/output pin 20 (GP[20]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

GP[21]/
EM_A[15]
N1 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO.

For GPIO, it is general-purpose input/output pin 21 (GP[21]).

Mux control via the A15_MODE bit in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[22]/
EM_A[16]
E2 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO.

For GPIO, it is general-purpose input/output pin 22 (GP[22]).

Mux control via the A16_MODE bit in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[23]/
EM_A[17]
F2 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO.

For GPIO, it is general-purpose input/output pin 23 (GP[23]).

Mux control via the A17_MODE bit in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[24]/
EM_A[18]
G2 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO.

For GPIO, it is general-purpose input/output pin 24 (GP[24]).

Mux control via the A18_MODE bit in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[25]/
EM_A[19]
G4 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO.

For GPIO, it is general-purpose input/output pin 25 (GP[25]).

Mux control via the A19_MODE bit in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

GP[26]/
EM_A[20]
J3 I/O/Z IPD
DVDDEMIF
BH
This pin is multiplexed between EMIF and GPIO.

For GPIO, it is general-purpose input/output pin 26 (GP[26]).

Mux control via the A20_MODE bit in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR2 (1C18h) register.

The IPD is disabled at reset.

I2S2_DX/
UHPI_HD[11]/

GP[27]/
SPI_TX
P12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between I2S2, UHPI, GPIO, and SPI.

For GPIO, it is general-purpose input/output pin 27 (GP[27]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

UART_RTS/
UHPI_HD[12]/

GP[28]/
I2S3_CLK
N12 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

For GPIO, it is general-purpose input/output pin 28 (GP[28]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

UART_CTS/
UHPI_HD[13]/

GP[29]/
I2S3_FS
P13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

For GPIO, it is general-purpose input/output pin 29 (GP[29]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

UART_RXD/
UHPI_HD[14]/

GP[30]/
I2S3_RX
N13 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

For GPIO, it is general-purpose input/output pin 30 (GP[30]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is enabled at reset.

UART_TXD/
UHPI_HD[15]/

GP[31]/
I2S3_DX
P14 I/O/Z IPD
DVDDIO
BH
This pin is multiplexed between UART, UHPI, GPIO, and I2S3.

For GPIO, it is general-purpose input/output pin 31 (GP[31]).

Mux control via the PPMODE bits in the EBSR.

The IPD resistor on this pin can be enabled or disabled via the PUDINHIBR3 (1C19h) register.

The IPD is disabled at reset.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.
(5) Pins with multiple names default to the first, bolded name when reset (for example, GP[21]/EM_A[15] defaults to GP[21] when reset).

4.2.16 Regulators and Power Management

Table 4-17 Regulators and Power Management Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
Regulators
DSP_LDOO E10 S

DSP_LDO output. When enabled, this output provides a regulated 1.3 V or 1.05 V output and up to 250 mA of current (see the ISD parameter in Section 5.3.2, Electrical Characteristics).

The DSP_LDO is intended to supply current to the digital core circuits only (CVDD) but not to CVDDRTC or external devices. For proper device operation, the external decoupling capacitor of this pin should be 5µF ~ 10µF. For more detailed information, see Section 5.7.2.5, Power-Supply Decoupling.

When disabled, this pin is in the high-impedance (Hi-Z) state.

LDOI F14,
F13,
B12
S LDO inputs. For proper device operation, LDOI must always be powered. The LDOI pins must be connected to the same power supply source with a voltage range of 1.8 V to 3.6 V. These pins supply power to the internal LDOs, the bandgap reference generator circuits, and serve as the I/O supply for some input pins.
DSP_LDO_EN D12 I
LDOI
DSP_LDO enable input. This signal is not intended to be dynamically switched.

0 = DSP_LDO is enabled. The internal POR monitors the DSP_LDOO pin voltage and generates the internal POWERGOOD signal.

1 = DSP_LDO is disabled. The internal POR voltage monitoring is also disabled. The internal POWERGOOD signal is forced high and the external reset signal on the RESET pin (D6) is the only source of the device reset. Note, the device's internal reset signal is generated as the logical AND of the RESET pin and the internal POWERGOOD signal.

USB_LDOO F12 S

USB_LDO output. This output provides a regulated 1.3 V output and up to 25 mA of current (see the ISD parameter in Section 5.3.2, Electrical Characteristics).

For proper device operation, this pin must be connected to a 1 µF ~ 2 µF decoupling capacitor to VSS. For more detailed information, see Section 5.7.2.5, Power-Supply Decoupling. This LDO is intended to supply power to the USB_VDD1P3, USB_VDDA1P3 pins but not to CVDDRTC or external devices.

Note: The reset state of the register that enables and disables the USB_LDO is dependent on the setting of CLK_SEL pin at reset.

If CLK_SEL is high, the USB_LDO is disabled at reset but can be enabled by software.

If CLK_SEL is low, the USB LDO is enabled (USB_LDO_EN=1) at reset and cannot be disabled by software. (See Section 5.7.2.1.1.2.1LDO Control for details.)

ANA_LDOO A12 S ANA_LDO output. This output provides a regulated 1.3 V output and up to 4 mA of current (see the ISD parameter in Section 5.3.2, Electrical Characteristics).

For proper device operation, this pin must be connected to an ~ 1.0 µF decoupling capacitor to VSS. For more detailed information, see Section 5.7.2.5, Power-Supply Decoupling. This LDO is intended to supply power to the VDDA_ANA pin but not to VDDA_PLL, CVDDRTC or external devices.

BG_CAP B13 A, O

Bandgap reference filter signal. For proper device operation, this pin needs to be bypassed with a 0.1 µF capacitor to analog ground (VSSA_ANA).

BG_CAP provides a settling time of 200 ms that must elapse before executing bootloader code. The settling time time is used by Timer0.

This external capacitor provides filtering for stable reference voltages and currents generated by the bandgap circuit. The bandgap produces the references for use by the SAR and POR circuits.

(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.17 Supply Voltage

Table 4-18 Supply Voltage Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
SUPPLY VOLTAGES
F6
H8 1.05-V Digital Core supply voltage (75 MHz)
J6 PWR 1.3-V Digital Core supply voltage (175 MHz)
CVDD K10 1.4-V Digital Core supply voltage (200 MHz)
L5
F7
K7
DVDDIO K12 PWR 1.8-V, 2.75-V, or 3.3-V I/O power supply for non-EMIF and non-RTC I/Os
N14 DVDDIO must always be powered for proper operation.
P3
P8
A2
A5
E6
F5 1.8-V, 2.75-V, or 3.3-V EMIF I/O power supply
DVDDEMIF G5 PWR DVDDEMIF must always be powered for proper operation. GP[26:21] are used for boot mode configuration.
H5
H7
J5
P2
CVDDRTC C8 PWR 1.05-V RTC digital core and RTC oscillator power supply.
Note: The CVDDRTC pin must always be powered by an external power source even though RTC is not used. None of the on-chip LDOs can power CVDDRTC.
DVDDRTC F8 PWR

1.8-V, 2.75-V, or 3.3-V I/O power supply for peripheral pins.

DVDDRTC can be tied to ground (VSS) when RTC_CLKOUT and WAKEUP pins are not used permanently. In this case, the WAKEUP pin must be configured as output by software. (See Table 5-1, RTCPMGT Register Bit Descriptions.)

VDDA_PLL C10 PWR see Section 5.2, ROC

1.3-V Analog PLL power supply for the system clock generator.

Care should be taken to prevent noise on this supply. Consider using a ferrite bead if the power supply for this pin is shared with digital logic. See the Filtering Techniques Application Report [literature number: SCAA048] for more information.

This signal cannot be powered from the ANA_LDOO pin. It must be powered externally.

USB_VDDPLL G8 S see Section 5.2, ROC

3.3 V USB Analog PLL power supply.

Care should be taken to prevent noise on this supply. Consider using a ferrite bead if the power supply for this pin is shared with digital logic. See the Filtering Techniques Application Report [literature number: SCAA048] for more information.

When the USB peripheral is not used, the USB_VDDPLL signal should be connected to ground (VSS).

USB_VDD1P3 J13 S see Section 5.2, ROC 1.3-V digital core power supply for USB PHY.

This signal must be powered on in the order listed in Section 5.7.2.2, Power-Supply Sequencing.

When the USB peripheral is not used, the USB_VDD1P3 signal should be connected to ground (VSS).

USB_VDDA1P3 H10 S see Section 5.2, ROC Analog 1.3 V power supply for USB PHY. [For high-speed sensitive analog circuits]

This signal must be powered on in the order listed in Section 5.7.2.2, Power-Supply Sequencing.

When the USB peripheral is not used, the USB_VDDA1P3 signal should be connected to ground (VSS).

USB_VDDA3P3 H12 S see Section 5.2, ROC Analog 3.3 V power supply for USB PHY.

This signal must be powered on in the order listed in Section 5.7.2.2, Power-Supply Sequencing.

When the USB peripheral is not used, the USB_VDDA3P3 signal should be connected to ground (VSS).

USB_VDDOSC G12 S see Section 5.2, ROC 3.3-V power supply for USB oscillator.

When the USB peripheral is not used, USB_VDDOSC should be connected to ground (VSS).

VDDA_ANA A10 PWR 1.3-V supply for power management and 10-bit SAR ADC
This signal can be powered from the ANA_LDOO pin.
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.2.18 Ground

Table 4-19 Ground Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
A13
A14
D7
D11
E9
E11
E12
E13
E14
VSS F9 GND Ground pins
F10
G6
G7
H6
J7
J8
J9
K8
K9
K11
K13
VSSRTC C9 GND Ground for RTC oscillator. When using a 32.768-kHz crystal, this pin is a local ground for the crystal and must not be connected to the board ground (See Figure 5-13 and Figure 5-16). When not using RTC and the crystal is not populated on the board, this pin is connected to the board ground.
VSSA_PLL D9 GND see Section 5.2, ROC Analog PLL ground for the system clock generator.
USB_VSSPLL G11 GND see Section 5.2, ROC USB Analog PLL ground.
USB_VSS1P3 H13 GND see Section 5.2, ROC Digital core ground for USB PHY.
USB_VSSA1P3 H9 GND see Section 5.2, ROC Analog ground for USB PHY [For high speed sensitive analog circuits].
USB_VSSA3P3 H11 GND see Section 5.2, ROC Analog ground for USB PHY.
USB_VSSOSC F11 GND see Section 5.2, ROC Ground for USB oscillator.
USB_VSSREF G10 GND see Section 5.2, ROC Ground for reference current. This must be connected via a 10-kΩ ±1% resistor to USB_R1.

When the USB peripheral is not used, the USB_VSSREF signal should be connected directly to ground (Vss).

VSSA_ANA B10 GND Analog ground pins for power management (POR and Bandgap circuits) and 10-bit SAR ADC
B14
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.

4.3 Pin Multiplexing

Extensive pin multiplexing is used to accommodate the largest number of peripheral functions in the smallest possible package. The external bus selection register (EBSR) controls all the pin multiplexing functions on the device.

This section discusses how to program the external bus selection register (EBSR) to select the desired peripheral functions and pin muxing. See the individual subsections for muxing details for a specific muxed pin. After changing any of the pin mux control registers, it will be necessary to reset the peripherals that are affected.

4.3.1 UHPI, SPI, UART, I2S2, I2S3, and GP[31:27, 20:12] Pin Multiplexing [EBSR.PPMODE Bits]

The UHPI, SPI, UART, I2S2, I2S3, and GPIO signal muxing is determined by the value of the PPMODE bit fields in the External Bus Selection Register (EBSR) register. For more details on the actual pin functions, see Table 4-20.

Table 4-20 UHPI, SPI, UART, I2S2, I2S3, and GP[31:27, 20:12] Pin Multiplexing

PULLUP and PULLDOWN
CONTROL REGISTER BIT
PIN NUMBER EBSR PPMODE BITS
MODE 0 MODE 1 MODE 2 MODE 3 MODE 4 MODE 5 MODE 6
000 001
(Reset Default)
010 011 100 101 110
PUDINHIBR7 (0x1C50) Bit 12 N3 UHPI_HINT SPI_CLK Reserved Reserved Reserved Reserved SPI_CLK
PUDINHIBR3 (0x1C19) Bit 0 P6 UHPI_HD[0] SPI_RX Reserved Reserved Reserved Reserved SPI_RX
PUDINHIBR3 (0x1C19) Bit 1 N6 UHPI_HD[1] SPI_TX Reserved Reserved Reserved Reserved SPI_TX
PUDINHIBR3 (0x1C19) Bit 2 P7 UHPI_HD[2] GP[12] Reserved Reserved Reserved Reserved GP[12]
PUDINHIBR3 (0x1C19) Bit 3 N7 UHPI_HD[3] GP[13] Reserved Reserved Reserved Reserved GP[13]
PUDINHIBR3 (0x1C19) Bit 4 N8 UHPI_HD[4] GP[14] Reserved Reserved Reserved Reserved GP[14]
PUDINHIBR3 (0x1C19) Bit 5 P9 UHPI_HD[5] GP[15] Reserved Reserved Reserved Reserved GP[15]
PUDINHIBR3 (0x1C19) Bit 6 N9 UHPI_HD[6] GP[16] Reserved Reserved Reserved Reserved GP[16]
PUDINHIBR3 (0x1C19) Bit 7 P10 UHPI_HD[7] GP[17] Reserved Reserved Reserved Reserved GP[17]
PUDINHIBR3 (0x1C19) Bit 8 N10 UHPI_HD[8] I2S2_CLK GP[18] SPI_CLK I2S2_CLK SPI_CLK I2S2_CLK
PUDINHIBR3 (0x1C19) Bit 9 P11 UHPI_HD[9] I2S2_FS GP[19] SPI_CS0 I2S2_FS SPI_CS0 I2S2_FS
PUDINHIBR3 (0x1C19) Bit 10 N11 UHPI_HD[10] I2S2_RX GP[20] SPI_RX I2S2_RX SPI_RX I2S2_RX
PUDINHIBR3 (0x1C19) Bit 11 P12 UHPI_HD[11] I2S2_DX GP[27] SPI_TX I2S2_DX SPI_TX I2S2_DX
PUDINHIBR3 (0x1C19) Bit 12 N12 UHPI_HD[12] UART_RTS GP[28] I2S3_CLK UART_RTS UART_RTS I2S3_CLK
PUDINHIBR3 (0x1C19) Bit 13 P13 UHPI_HD[13] UART_CTS GP[29] I2S3_FS UART_CTS UART_CTS I2S3_FS
PUDINHIBR3 (0x1C19) Bit 14 N13 UHPI_HD[14] UART_RXD GP[30] I2S3_RX UART_RXD UART_RXD I2S3_RX
PUDINHIBR3 (0x1C19) Bit 15 P14 UHPI_HD[15] UART_TXD GP[31] I2S3_DX UART_TXD UART_TXD I2S3_DX
PUDINHIBR7 (0x1C50) Bit 8 P4 UHPI_HCNTL0 SPI_CS0 Reserved Reserved Reserved Reserved SPI_CS0
PUDINHIBR7 (0x1C50) Bit 9 N4 UHPI_HCNTL1 SPI_CS1 Reserved Reserved Reserved Reserved SPI_CS1
PUDINHIBR7 (0x1C50) Bit 10 P5 UHPI_HR_NW SPI_CS2 Reserved Reserved Reserved Reserved SPI_CS2
PUDINHIBR7 (0x1C50) Bit 11 N5 UHPI_HRDY SPI_CS3 Reserved Reserved Reserved Reserved SPI_CS3
PUDINHIBR6 (0x1C4F) Bit 7 B5 UHPI_HBE0 EM_DQM0 EM_DQM0 EM_DQM0 EM_DQM0 EM_DQM0 EM_D1M0
PUDINHIBR6 (0x1C4F) Bit 8 P1 UHPI_HBE1 EM_DQM1 EM_DQM1 EM_DQM1 EM_DQM1 EM_DQM1 EM_DQM1
PUDINHIBR7 (0x1C50) Bit 3 A6 UHPI_HAS EM_SDRAS EM_SDRAS EM_SDRAS EM_SDRAS EM_SDRAS EM_SDRAS
PUDINHIBR7 (0x1C50) Bit 2 B4 UHPI_HCS EM_SDCAS EM_SDCAS EM_SDCAS EM_SDCAS EM_SDCAS EM_SDCAS
PUDINHIBR7 (0x1C50) Bit 4 B3 UHPI_HDS1 EM_CS0 EM_CS0 EM_CS0 EM_CS0 EM_CS0 EM_CS0
PUDINHIBR7 (0x1C50) Bit 5 A4 UHPI_HDS2 EM_CS1 EM_CS1 EM_CS1 EM_CS1 EM_CS1 EM_CS1
PUDINHIBR7 (0x1C50) Bit 1 N2 UHPI_HHWIL EM_SDCKE EM_SDCKE EM_SDCKE EM_SDCKE EM_SDCKE EM_SDCKE

4.3.2 MMC1, McSPI, and GP[11:6] Pin Multiplexing [EBSR.SP1MODE Bits]

The MMC1, McSPI, and GPIO signal muxing is determined by the value of the SP1MODE bit fields in the External Bus Selection Register (EBSR) register. For more details on the actual pin functions, see Table 4-21.

Table 4-21 MMC1, McSPI, and GP[11:6] Pin Multiplexing

PUDINHIBR1
REGISTER
BIT(1)
PIN NUMBER EBSR SP1MODE BITS
MODE 0 MODE 1 MODE 2
00
(Reset Default)
01 10
Bit 8 M13 MMC1_CLK McSPI_CLK GP[6]
Bit 9 L14 MMC1_CMD McSPI_CS0 GP[7]
Bit 10 M14 MMC1_D0 McSPI_SIMO GP[8]
Bit 11 M12 MMC1_D1 McSPI_SOMI GP[9]
Bit 12 K14 MMC1_D2 McSPI_CS1 GP[10]
Bit 13 L13 MMC1_D3 McSPI_CS2 GP[11]
(1) The pin names with PUDINHIBR1 (1C17h) register bit field references can have the pulldown register enabled or disabled via this register. Pin 0 on serial port 1 corresponds to bit 8, pin 1 to bit 9, and so on up to pin 5 which corresponds to bit 13.

4.3.3 MMC0, I2S0, McBSP, and GP[5:0] Pin Multiplexing [EBSR.SP0MODE Bits]

The MMC0, I2S0, McBSP, and GPIO signal muxing is determined by the value of the SP0MODE bit fields in the External Bus Selection Register (EBSR) register. For more details on the actual pin functions, see Table 4-22.

Table 4-22 MMC0, I2S0, McBSP, and GP[5:0] Pin Multiplexing

PUDINHIBR1
REGISTER
BIT(1)
PIN NUMBER EBSR SP0MODE BITS
MODE 0 MODE 1 MODE 2 MODE 3
00
(Reset Default)
01 10 11
Bit 0 L10 MMC0_CLK I2S0_CLK GP[0] McBSP_CLKX
Bit 1 M11 MMC0_CMD I2S0_FS GP[1] McBSP_FSX
Bit 2 L9 MMC0_D0 I2S0_DX GP[2] McBSP_DX
Bit 3 M10 MMC0_D1 I2S0_RX GP[3] McBSP_DR
Bit 4 L12 MMC0_D2 GP[4] GP[4] McBSP_FSR
Bit 5 L11 MMC0_D3 GP[5] GP[5] McBSP_CLKR_CLKS(2)
(1) The pin names with PUDINHIBR1 (1C17h) register bit field references can have the pulldown register enabled or disabled via this register. Pin 0 on serial port 0 corresponds to bit 0, pin 1 to bit 1, and so on up to pin 5 which corresponds to bit 5.
(2) Bit 15 of the EBSR register determines this port to be McBSP_CLKR or McBSP_CLKS.

4.3.4 EMIF EM_A[20:15] and GP[26:21] Pin Multiplexing [EBSR.Axx_MODE bits]

The EMIF Address and GPIO signal muxing is determined by the value of the A20_MODE, A19_MODE, A18_MODE, A17_MODE, A16_MODE, and A15_MODE bit fields in the External Bus Selection Register (EBSR) register. For more details on the actual pin functions, see Table 4-23.

Table 4-23 EM_A[20:16] and GP[26:21] Pin Multiplexing

PUDINHIBR2
REGISTER
BIT(1)
PIN NUMBER Axx_MODE BIT
0 1
Bit 0 N1 EM_A[15] GP[21]
Bit 1 E2 EM_A[16] GP[22]
Bit 2 F2 EM_A[17] GP[23]
Bit 3 G2 EM_A[18] GP[24]
Bit 4 G4 EM_A[19] GP[25]
Bit 5 J3 EM_A[20] GP[26]
(1) The pin names with PUDINHIBR2 (1C18h) register bit field references can have the pulldown register enabled or disabled via this register.

4.4 Connections for Unused Signals

Table 4-24 lists the signals that are reserved or are not connected on this device.

Table 4-24 Reserved and No Connects Signal Descriptions

SIGNAL TYPE(1)(4) OTHER(2)(3) DESCRIPTION
NAME NO.
Reserved
RSV0 C12 I
LDOI
Reserved. For proper device operation, this pin must be tied directly to VSS.
RSV1 J10 PWR Reserved. For proper device operation, this pin must be tied directly to CVDD.
RSV2 J11 PWR Reserved. For proper device operation, this pin must be tied directly to CVDD.
RSV3 D14 I
LDOI
Reserved. For proper device operation, this pin must be tied directly to VSS.
RSV4 C14 I
LDOI
Reserved. For proper device operation, this pin must be tied directly to VSS.
RSV5 C13 I
LDOI
Reserved. For proper device operation, this pin must be tied directly to VSS.
RSV16 D13 I
LDOI
Reserved. For proper device operation, this pin must be tied directly to VSS.
(1) I = Input, O = Output, Z = High impedance, S = Supply voltage, GND = Ground, A = Analog signal, BH = Bus Holder
(2) IPD = Internal pulldown, IPU = Internal pullup. For more detailed information on pullup and pulldown resistors and situations where external pullup and pulldown resistors are required, see Section 5.7.20.1.1, Pullup and Pulldown Resistors.
(3) Specifies the operating I/O supply voltage for each signal
(4) Input pins of type I, I/O, and I/O/Z are required to be driven at all times. To achieve the lowest power, these pins must not be allowed to float. When they are configured as input or tri-stated, and not driven to a known state, they may cause an excessive IO-supply current. Prevent this current by externally terminating it or enabling IPD and IPU, if applicable.