Forum Discussion
AEsqu
Contributor
ContributorQuartus 19.3 does not recognize reset sync blocks
Quartus 19.3 does not recognize reset sync blocks (with double or 3 FF), there is a plague of removal timing violations that are not valid (there are sync blocks). Quartus 13.1 does not have that ...
sstrell
Super Contributor
Super ContributorAre registers in your synchronizer chains being optimized away? Check the RTL Viewer or Technology Map Viewer to verify. Also check the Metastability analysis setting in the Timing Analyzer settings. You probably want it to be set to Auto to preserve these chains of registers. You could also use synthesis attributes to prevent optimizing away the registers if that's what's happening.
#iwork4intel
AEsquHi SStrell,
The syncro identification is set to auto in both fitter and timing analysis setting, with a length of 2.
