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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 , ...
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ShengN_altera's avatar
ShengN_altera
Icon for Super Contributor rankSuper Contributor
1 year ago

Hi,


Could you provide .qar file for taking a look?


Thanks,

Regards,

Sheng


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

Hi,

The QAR is attached. The current version I’ve uploaded includes the following constraints:

set_global_assignment -name SYNCHRONIZATION_REGISTER_CHAIN_LENGTH 2
set_global_assignment -name SYNCHRONIZER_IDENTIFICATION FORCED

Feel free to experiment with the other trial and error attributes you’ve suggested.

Thanks,

Or.