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Altera_Forum
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8 years ago

Getting Quartus to recognize a Recirculation Mux Synchronizer

Hi all, I'm attempting to perform a CDC of a Data bus that switches values with a Write Strobe using a "Recirculation Mux Synchronizer". In essence the Write Strobe is synchronized across the A...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

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My observation is that Quartus can be set to recognise synchroniser chains but the user must enter timing constraints, a bit pointless

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Indeed! I suppose the Synchronizer recognition is really only used for the Metastability Analysis portion. I had a feeling that was the case, but your answer solidified it. Not sure why Altera (Intel) can't just ignore that path if the tool already recognizes is as such though. Hopefully this is something that can be supported in the near future.

Thanks for your help!