Raspberry Pi Pinout
GPIO 19 (PCM Frame Sync)
| Alt0 | Alt1 | Alt2 | Alt3 | Alt4 | Alt5 |
|---|---|---|---|---|---|
| PCM FS | SMI SD11 | DPI D15 | I2CSL SCL / SCLK | SPI1 MISO | PWM1 |
- Physical/Board pin 35
- GPIO/BCM pin 19
- Wiring Pi pin 24
GPIO 19 is used by PCM to provide a frame-sync signal to an external audio device such as a DAC chip.
