Enabling Path Tracing Controls turns on analysis of latches/asynchronous signals in PERIOD and OFFSET or unconstrained path analysis.
NOTE: Some PTCS are enabled by default, meaning that these paths will be enabled during timing analysis, but others should be enabled using the ENABLE constraint in the UCF (see the Constraints Guide).
Example: ENABLE = reg_sr_r;
For disabling a particular PTC, use theDISABLE constraint.
Timing Analyzer can also enable and disable individual PTCs when performing Post Route analysis.
The Constraints Guide has a complete list of allPTCs available.