Forum Discussion
sstrell
Super Contributor
1 year agoNo, I'm saying to make all your synch chains at least 3 instead of reducing the chain length to 2 so that only chains of 3 get recognized as synch chains. If you reduce the setting to 2, there most likely be many series of 2 registers mis-identified as synch chains.
- OrF1 year ago
Occasional Contributor
Hi
Since I can not add another FF to sample for the synchronizers ( inorder to increase the chain to 3) - I have change the setting from 3 to 2 with the next tcl command :
"set_global_assignment -name SYNCHRONIZATION_REGISTER_CHAIN_LENGTH 2"
I see that Quartus capture this "setting" , but on the other hand I still get the same warning: " CDC-50001 - 1-Bit Asynchronous Transfer Not Synchronized "
any other reason for this warning ? any option to for further debug ?