Hello. I have designed a system that uses multiple AD9162 devices and one of the devices no longer passes the CGS stage. This device was working fine, but then started failing in the CGS stage. I have checked all of the power supplies and clocks and SYSREFs going to the devices, everything looks ok. I was able to compare the bad device boot sequence to a know good device boot sequence and the results are listed below.
All register readings matched with the exception of the following:
REG ADDR | GOOD DEVICE| BAD DEVICE
0x092 | 0x01 | 0x03 (This value did clear to a 0x01 and remained that way from that point on, so I think it's ok)
0x034 | 0x24 | 0x14
0x302 | 0x07 | 0x00
0x470 | 0xFF | 0x00 (This is where CGS fails, I did not go any further)
I am using a total of 64 AD9162 devices (8 devices on 8 different PCBs) and a total of approximately 5 or 6 of them have this same issue. Any help would be much appreciated.Thank you,