GPIO 20 (PCM Data-In)
Alt0 | Alt1 | Alt2 | Alt3 | Alt4 | Alt5 |
---|---|---|---|---|---|
PCM DIN | SMI SD12 | DPI D16 | I2CSL MISO | SPI1 MOSI | GPCLK0 |
- Physical/Board pin 38
- GPIO/BCM pin 20
- Wiring Pi pin 28
GPIO 20 is used by PCM to as a data input from an audio device such as an I2C microphone.