Can Bus - Cherry theobroma SYSTEMS PX30-mQ7 User Manual

Additionally, an expansion connector for I2S audio is available on the bottom row of the board:

3.17 CAN Bus

The board provides a CAN connector on the bottom row.
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Fig. 3.14: Audio input/output port
3V3
GND
I2S_CLK
I2S_SDO
I2S_DAT
Fig. 3.15: Connecting to the audio expansion connector
3V3_LDO
I2S_RST#
I2S_WS
I2S_SDI
I2S_CLK