two adau1701 in serial mode with controller
Hello
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 :
audio path:
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.
IC3 master
IC2 slave
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
Audio Signal Processors
SigmaDSP Audio Processors
adau1701
Hello vasilius,
As long as the clocks are the correct frequencies it does not matter if they are coming from internal or external, the input and output shift registers will shift the data. So as long as the STM32 will output MCLK at 256x fs (assuming that is what you are setup for) and the bit clock is 64 x fs then you can clock all of the 1701's with the same clock. In fact, it is the way you should do it. Then you can send the serial output port of one of the ICs to the other's input port and transmit data between cores in that manner.
Dave T
Of course both ADAU fully clocked by STM32 - 12Mhz.
So my circuit is correct?
yes
Please log in to reply.