Stereo output from the headset in nRF5340 Audio CIS mode

[Junichi]

Currently, I'm using nRF5340 Audio on a homemade board, and I've managed to get the sound input from the gateway as a LINE input and the sound coming out of the headset, but the sound only comes out of the headset in mono.

I want to get stereo output from the headset in nRF5340 Audio CIS mode, but what should I set and how?

[Junichi]

Additional information.
The I2S bit length is 16 bits on the gateway side and 32 bits on the headset side.

[dejans]

Hi,

Junichi said:

The I2S bit length is 16 bits on the gateway side and 32 bits on the headset side.

Can you elaborate on this?

Documentation has a Note which describes that "the audio outputs only to the left channel of the audio jack, even if the given headset is configured as the right headset. This is because of the mono hardware codec chip used on the development kits. If you want to play stereo sound using one development kit, you must connect an external hardware codec chip that supports stereo." There is also nrf5340 stereo audio output discussion which could be useful.

Best regards,
Dejan