1.5.2 X32 Port Connections
The following table provides the port and connection details of the X32 audio interface. The I2S signals listed are the Main signals, and both the signals are available at each interface.
| Interface | X32 |
|---|---|
| UART RX | PC13 |
| UART TX | PC12 |
| UART RTS | PC14 |
| UART CTS | PC15 |
| I2C SDA | PD09 |
| I2C SCL | PD08 |
| Reset | PC18 |
| REFCLK | PA08/PA17 (refer to Figure 1-4 Audio Clock Selection) |
| I2S Clock | PA10 |
| I2S Audio Out (MOSI) | PA11 |
| I2S Audio In (MISO) | PB10 |
| I2S LRCLK | PA09 |