Now works fine for such a scheme:
But i want to use one more ADAU1701, and instead ADC input use digital input and dsp power of second dsp :
1 analog in to adc IC1 and after go to digi Out
2 from IC1 digi Out goes to IC2 digi IN and after go to digi OUT for stm32
3 from digi OUT IC2 to STM32 and after back from stm32
4 from STM32 back to IC2 for DAC
5 out to analog from DAC IC2
The main difference from my working schema in using another ADAU instead ADC IN, and clock it with I2S LCRK+BCLK from STM32.
The MCLK go from stm32 to both ADAU.
The main doubt in IC1 - if IC1 is slave and IC2 and clocked both by stm32 - can IC1 send and IC2 recieve directly?
Thank yo to answer