I have finished a PCB application of ADAU1701 which is AUXin & a i2s in / 2 i2s output to a DAC . 12.288MHz mclk feed in to 1701 MCLKI and DAC MCLK in. a WIFI i2s master ( BCLK,LRCK,DATA)to 1701 i2s input. 1701 BCLK/LRCK output , not connected to input BCLK/LRCK. , now. my issue are 2.
1. when wifi i2s non-active( BLCK/LRCK/DATA all high ) , AUXin mode works ( 2 i2s output and DAC has output). but when wifi i2s to 1701 is active ( 44.1k Fs/ BCLK/ has DATA), 1701 I2S DATA0/ DATA1 then OFF, if just turn wifi i2s to 1701 again , the i2s out from 1701 active again. that's strange .
2. For 1701 i2s slave , the BCLK/LRCK/DATA input of i2s , can be any configration, like 44.1/48/96KHz Fs, and the rate can be 128*Fs/256Fs.... how to let slave BCLK/LRCK/DATA, sync to MCLK of 1701 ?
if anybody have some comments , much thanks.