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PCM2903C: Evaluation board not outputting stereo audio

Part Number: PCM2903C
Other Parts Discussed in Thread: PCM2903

Hi there, I'm trying to integrate the PCM2903 with my Linux machine and I'm finding that it's not playing stereo audio out from the 3.5 mm jack. Instead it is blending it together into mono output. I'm running Ubuntu Linux kernel 5.15.0-58-generic. What's odd is that I'm able to capture stereo audio without any issue; the issue only occurs on playback.

Below is the command in linux I've used to test playback:

  • speaker-test -D plughw:CARD=CODEC -c 2

Can anyone tell me what I'm doing wrong?