I am using the EVAL-AD7997EBZ/AD7998EBZ dev kit and When I read the Conversion Results Register I only get the MSBs "The four high bit of the adc" and on the second byte read I get all zeros for the LSBs " the lower 8 bits of the A to D".
This is my procedure
1) Set the configuration register to the input I want a value for
2) Using Mode 2 I write to the Input I want to read with P3-P0 zero
3) I read two bytes from the same address I just wrote two.
The puzzling this about this is I am getting data from the MSBs on the first byte read it is just the seconD byte read I get all zeros.
I am Confused???