11-14-2013 03:26 PM
I have problems with GTH. What am I doing wrong? I've generated GTH core in Vivado with example design.
I ran the testbench and there is no "cdrlock" (this signal goes UP and DOWN)?
what could be the problem?
on a real board the sitiation is the same.
-thanks in advance
11-14-2013 04:21 PM - edited 11-14-2013 04:24 PM
What is your core configuration and to which clock are you trying to lock the CDR
Had a chance to try the below links?
11-15-2013 01:00 AM
My device is xc7vx690t.
I want the CDR (Clock and Data Recovery) to be locked to incoming data.
I use ISE 14.7.
no coding used (8b10b or 64b66b), no comma detection used. just "raw" GTH.
as a result CDRLOCK is not stable "1"
11-15-2013 06:14 AM