Forum Discussion
OrF
Occasional Contributor
Occasional ContributorFind where false_path was set.
Hi, I have a design where there is a physical path between two flip-flops (FF). However, when I try to generate a timing report, the Timing Analyzer shows “nothing to report.” I assume this might be...
sstrell
Super Contributor
Super ContributorI'm not sure why this is referring to a .scf file (which I had to look up what that was, a simulator channel file?), but maybe that's why there are issues. This should be in a .sdc file.
OrFThe .scf extension is what I used to apply my constraints. The constraints are in place, but I can change the file name or its extension if needed (see below). I created a test case, but it doesn’t seem to be expanding the wildcard, even after changing the file name.
+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
; Set False Path ;
+----------------+-------+------------+------------------------+---------+----------+-------------------------------------------------------+----------------------------+----------+
; SDC Command ; Flags ; From Flags ; From ; Through ; To Flags ; To ; Location ; Comments ;
+----------------+-------+------------+------------------------+---------+----------+-------------------------------------------------------+----------------------------+----------+
; set_false_path ; ; -from ; [get_clocks {rx_*}] ; ; -to ; [get_clocks {pll_*}] ; new.sdc:2 ; ;
+----------------+-------+------------+------------------------+---------+----------+-------------------------------------------------------+----------------------------+----------+
