Forum Discussion

OrF's avatar
OrF
Icon for Occasional Contributor rankOccasional Contributor
1 year ago

CDC-50001 - 1-Bit Asynchronous Transfer Not Synchronized

I'm trying to re-open this ticket - I didn't found how , but anyway I tried to change the default Quartus SYNCHRONIZATION_REGISTER_CHAIN_LENGTH 2 (instead of 3) and still get the same warning , ...
Timing
ShengN_altera's avatar
ShengN_altera
Icon for Super Contributor rankSuper Contributor
1 year ago

Hi Or,


Sometimes the flip-flop with async clear will not be identified as synchronizer due to other considerations of the tool. Some of the reasons mentioned before. If that happens, try to avoid async clear. You'll find that the synchronizer template code all without the async clear.