The timing report produced by CPLDFit reports the cycle time for a clock net as "x" ns. When I run "Analyze Against Auto Generated Design Constraints" from Timing Analyzer, the Timing Analyzer reports a cycle time of "y" ns.
Which report is correct?
The timing report is correct. (It appears that Tpta was not accounted for in the Timing Analyzer results.)
This issue was fixed in the 5.1i software release.
NOTE: Cycle-to-cycle = (Tcoi + Tf + Tlogi + Tsui + Tpta)