I am thinking about an idea to use ADAU1701 to make an active audio filter with 2 analog input and 4 analog output. The problem is that the SNR of the internal ADCs and DACs of ADAU1701 is not good enough for me. Therefore i need to use 2 external ADCs and 4 external DACs to connect to ADADU1701. As i know, i need to connect these external ADCs and DACs to the GPIO pins, right? And How can i configure or program in Sigma Studio to use these ADC and DAC?
I will use 24 bit ADCs and DAC with SNR> 110dB.
Please help me, i have just knew SigmaDSPs for some days.
Thanks in advance!