GPIO 19 (PCM Frame Sync)
Alt0 | Alt1 | Alt2 | Alt7 | Alt8 |
---|---|---|---|---|
MCASP0_AFSX | SPI2_CS3 | AUDIO_EXT_REFCLK1 | GPIO1_12 | EQEP1_B |
- Physical/Board pin 35
- GPIO/BCM pin 19
- SoC pin C26
GPIO 19 is used by PCM to provide a frame-sync signal to an external audio device such as a DAC chip.