if_case.twr

实用的程序代码

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Xilinx TRACE, Version M1.4.12
Copyright (c) 1995-1997 Xilinx, Inc.  All rights reserved.

Design file:              if_case.ncd
Physical constraint file: if_case.pcf
Device,speed:             xc4005e,-2 (x1_0.86  PRELIMINARY)
Report level:             summary report
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WARNING:bastw:172 - No timing constraints found, doing advanced analysis with
   offsets.

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Timing constraint: Default period analysis for net n396
 31 items analyzed, 0 timing errors detected.
 Minimum period is  17.031ns.
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================================================================================
Timing constraint: Default OFFSET IN BEFORE analysis for clock "n396"
 31 items analyzed, 0 timing errors detected.
 Minimum allowable offset is  13.050ns.
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================================================================================
Timing constraint: Default path analysis
 6 items analyzed, 0 timing errors detected.
 Maximum delay is   3.981ns.
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All constraints were met.


Timing summary:
---------------

Timing errors: 0  Score: 0

Constraints cover 37 paths, 0 nets, and 41 connections (100.0% coverage)

Design statistics:
   Minimum period:  17.031ns (Maximum frequency:  58.716MHz)
   Maximum combinational path delay:   3.981ns
   Minimum input arrival time before clock:  13.050ns


Analysis completed Tue Jan  6 18:21:55 1998
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