Answers Database
TRCE/Timing Analyzer 2.1i: Elements are analyzed by Period and not FROM:THRU:TO
Record #6240
Product Family: Software
Product Line: FPGA Implementation
Product Part: Timing Analyzer
Product Version: 2.1i
Problem Title:
TRCE/Timing Analyzer 2.1i: Elements are analyzed by Period and not FROM:THRU:TO
Problem Description:
Urgency: Standard
General Description:
Elements are showing up in the Period constraint
and not in the FROM:THRU:TO. Why is this
happening?
Solution 1:
These particular constraints are an exception that
cannot be honored due to overlapping timegroup
definitions interacting such that the FROM:THRU:TO
constraints doesn't appear to be a subset of the
period constraint to the tools.
This involves a slow exception of intersecting paths
(where no proper subset condition exists due to
interactions with other constraints).
So, the constraints can overlap other constraints,
but don't overlap to many times.
End of Record #6240 - Last Modified: 11/22/99 15:38 |
