Honored ContributorIn TimeQuest Clock Transfer folder, I can see that there are 720 RR paths from CLKA to CLKB. But when I try to make timing report about these paths, it told me that no recovery paths were found. WHY??
Honored ContributorI thought of a possible explanation for what bothered me in my previous post, but I didn't test it to see whether TimeQuest works this way.
Maybe for the transfer table to say "false path", the false-path has to be done from clock domain to clock domain instead of another way like from a particular source register to a particular destination register. If that's the case and paths that are false because of "set_false_path -from src_reg -to dst_reg" get listed in the transfer table with a number (even if all paths on the row of the table are actually false), then it would make sense that you could have all 720 paths in question cut with a register-to-register false-path exception, keeping report_timing from listing anything even though the transfer table doesn't say "false".Honored ContributorYes, based on my study, your description is quite precise. :)
