BeagleY-AI Pinout


Orientate your BeagleY-AI with the GPIO on the right and the HDMI port(s) on the left.

(*) Denotes pins that differ in functionality on BeagleY-AI as compared to Raspberry Pi 4/5

GPIO 21 (PCM Data-Out)

  • Physical/Board pin 40
  • GPIO/BCM pin 21
  • SoC pin B25

GPIO 21 is used by PCM to provide a data output signal to an external audio device such as a DAC chip.

The pin is also usable as a GPIO, hardware PWM or the hardware PWM-ECAP peripheral.