Create of Combination Endpoint
TPSYNC allows definition of end points that are not FFS, RAMS, PADS or LATCHES.
- Commonly used with Three-State Buffers
- Use the TPSYNC constraint to specify internal combinatorial endpoints
First create the TPSYNC endpoint, then use it in a TIMESPEC like any other endpoint
Example: TIMESPEC TS_1A applies to the path from FF5 to the inputs of the combinatorial logic.
NET “BLUE” TPSYNC = BLUE_S;
TIMESPEC TS_1A = FROM FFS TO BLUE_S 15 NS;