The audio codec is set by an I
2
C bus. The address is a 7 bit address plus one bit for read/write (high for read, low
for write). The AD0 pin, connected to GND, gives the least-significant address bit. The address of the audio codec
is 0b1001010x: 0x94 to write and 0x95 to read.
7.6.5
Audio jack connector
shows the CN10 audio jack connector pinout.
Figure 8.
CN10 audio jack connector pinout
describes the CN10 audio jack connector pinout.
Table 7.
CN10 audio jack connector pinout
Pin
Pin name
Signal name
Codec pin
Function
1
1
MIC_IN
MICIN1
Microphone IN
2
2
GND
GND
GND
3
3
AOUTB
AOUTB
OUT_SPEAKER_RIGHT
4
4
AOUTA
AOUTA
OUT_SPEAKER_LEFT
7.6.6
I/O restriction
SAI2 is shared between the audio codec and the GPIO expansion connector. By default, the audio codec is
available because of solder bridges SB13, SB14, SB15, and SB16.
7.7
USB Host
7.7.1
Description
The STM32MP157A-DK1 and STM32MP157C-DK2 Discovery kits provide four USB Host ports (dual-USB
sockets CN1 and CN5) through the use of the USB2514B-AEZC USB Hub. The USB2514B-AEZC has a full
power management for each USB port: no I/O is needed from the STM32MP157x.
UM2534
USB Host
UM2534
-
Rev 1
page 14/47
