After multiple failed attempts, I was finally able to successfully build ADAU1701 eval board.
However while I was building the existing circuit I struggled a lot with VDRIVE and 1.8 voltage on pin 13 & 24. With the same circuit, on one board I could get 1.8 but not 3.3, instead it was 2.5. On other board, I could get 3.3 and not 1.8.
Somehow, with mix and match of multiple ADAU1701 & ADP3336ARMZ & transistors, finally I got the both 1.8 & 3.3 working.
So I would like to know What exactly I need to check if the device's PINs 13 & 24 are not returning 1.8V? If there any boot sequence which fails and hence device does not return 1.8V? Or device has not booted at all?
Also, how to determine if the device (ADAU1701) is functional and not dead or not to booting up?
My other question is, what changes are required to run the board with 24 Mhz clock, as most of the bluetooth receivers are of 24mhz+.
And lastly, how do I output 2 different channels via SADTA_OUT to an additional DAC as I would now like to add amplifiers (2 apms with analog inputs) to the board to output 6 channels.
Thank you in advance.