I have a prototype design using the BG95-M3 and a ALC5616 PCM codec. I have followed the power up sequence for the codec and connected the I2C and PCM lines between the codec and the BG95 according to the audio design note.
I have hooked up probes to the codec SCL and SDA lines from pin 41 and 40, but there is no activity on the scope.
I tried to force activity by running the AT+QDAI for explicitly selecting a codec and thereafter AT+CLVL for setting the volume. Still, there is no activity on the lines (Both SDA and SCL have pull-ups to 1.8V)
I have been looking through the “BG95&BG77 AT Commands Manual”, and the “BG95 Hardware Design” + “BG95 Reference Design” documents.Are there any other documentation regarding this, that I may have missed ?