hi team,
My customer met a problem using CDCM6208. I found the schematic should be alright, and I also ran the configuration on 6208 GUI with nothing wrong. However the device can't get lock.
what I've done:
1. add a RESETN cycle after configuration done
2. adjust the power up sequence according to d/s
3. measure the REF 25MHz input, which is right.
Schematic as below. also I attached the register dump (please note the configuration in the register dump only enables Y0 and Y1 for test purpose)
Register 0: 01B9
Register 1: 0060
Register 2: 02FB
Register 3: 00F0
Register 4: 30EF
Register 5: 0023
Register 6: 0006
Register 7: 0001
Register 8: 0000
Register 9: 0001
Register 10: 0000
Register 11: 0000
Register 12: 0001
Register 13: 0000
Register 14: 0000
Register 15: 0001
Register 16: 0000
Register 17: 0000
Register 18: 0001
Register 19: 0000
Register 20: 0000
Register 21: 0005
do you have any ideas?
Thanks.
Mike
