Ignore Paths with TIG and NET
The TIG attribute ignores a TIMESPEC for a specific path or net
Example for multiple constraints:
“NET” is used to assign TIG to a net
Assume that net DOG_SLOW was constrained by 2 constraints, TS01 and TS02. The following specification ignores TS01. TS02 only is applied to DOG_SLOW.
NET “DOG_SLOW” TIG = TS01;
Example to ignore a slow path between registers:
TIMESPEC TS_TIG01 = FROM FFS (REGA) TO FFS(REGB) TIG;
IMPORTANT NOTE: TIG improves software run-time and routability of the design