Currently I am trying to integrate ESP32 bluetooth I2S output with ADAU1701. My board is based on EVAL-ADAU1701MINIZ-8 design. AUX inputs work fine. If I connect ESP32 with in-built DAC via AUX in, it still works with little noise. However, issue is when I am trying to use the I2S. I am connecting output from ESP32 to following:
1. LRCK - MP4
2. BCLK - MP5
3. SDATA - MP1
Result is only noise. I have been trying to change PLL jumpers, but no luck. Changes resister settings e.g enabling/disabling master mode, changing word length etc. However, all these setting are for SDATA OUT, and I am at this point not much bothered with it as I am using DAC to output to AMP.
Is there anything that I am missing? Do I have to change any clock/frequency settings somewhere?
Thank you in advance.