I’m hoping to find out what the limitations of the I2S connection are:
- Can native DSD be sent via I2S connection, or does Volumio always convert it to PCM (DoP)?
- Can Volumio perform any kind of DAC configuration or management over the I2S interface? Or, is this achieved via other pins on the GPIO (e.g. IC2)?
I have a generic ES9038Q2M board connected to the RPi3B+ GPIO pins via the 3x I2S pins and Ground. It is not a HAT. I’m using Volumio v2.619.
The DAC only works if I use the “R-PI DAC” model in the Audio Output section of the settings. It works really well for PCM, playing 44.1/96/192KHz tracks without problem. However, Volumio seems to be converting DSD tracks to PCM.
How can I see and change the R-PI DAC profile (not just via the GUI)? I believe that it sends all data as 32bit packets, but where is this specified/configured?! The dacs.json file doesn’t control this.