Audio; Audio Codec Interface; Table 18. Sdcard Connector Pinout Mb1263/Cn9; Table 19. Io Configuration For The Audio Codec Interface - ST STM32MP157 Series User Manual

Table 18 describes the SDCARD connector pinout MB1263/CN9.
Pin
1
2
3
4
5
6
7
8
9
10
6.15

Audio

A codec WM8994ECS/R connected to an SAI of STM32MP157xAA3 supports TDM feature of the SAI port. TDM
feature offers to STM32MP157xAA3 the capability to stream stereo audio channels. There are four digital
microphones on STM32MP157x-EV1 board. STM32MP157x-EV1 also offers the possibility to connect an MEMS
extension module.
6.15.1

Audio Codec interface

The audio codec have two supplies 3V3 and 1V8 provided by STPMIC.
The audio Codec interfaces to the MPU are SAI2 and I2C2. Audio interrupt is connected to the IO-expander MFX.
SAI2A as Tx and SAI2B as Rx are connected to two different analog interfaces of the codec, to independently
playback and record.
SAI2 is connected by default to the audio codec, and may be shared via solder bridge configuration with the
expansion GPIO connector (refer to paragraph 6.28).
I2C2 is shared with all the peripherals: Audio codec, DSI LCD, RGB LTDC, Camera, and USB Hub. The audio
codec I²C address is 0x36
PI5
PI7
PI6
PF11
PE12
PE13
PE0
PE14
PH5
PH4
MFX_IO5
UM2535 - Rev 1
Table 18. SDCARD connector pinout MB1263/CN9
DATA2_SD
DATA3_SD
CMD_SD
VDD_SD
CLK_SD
GND
DATA0_SD
DATA1_SD
GND
SDCARD_DETECT active LOW
Table 19. IO configuration for the Audio Codec interface
IO
SAI2_SCKA
SAI2_FSA
SAI2_SDA
SAI2_SDB
SAI2_SCK_B
SAI2_FS_B
SAI2_MCLKA
SAI2_MCLKB
I2C2_SDA
I2C2_SCL
AUDIO_INT
Board function
Board function
UM2535
Audio
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