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Simulation Warning

Hello

I am getting following warning during simulation in ModelSim

  • Warning: *DFE3C RECOVERY High VIOLATION ON CLR WITH RESPECT TO CLK; # Expected := 1 ns; Observed := 0 ns; At : 61005 ns # Time: 61005 ns Iteration: 1

Can any one tell what is RECOVERY High VIOLATION. Thank for any help

Naimesh

Reply to
Naimesh
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Recovery time is the period of time following a clock that an asynchronous input must remain stable. It is similar to hold time, but for async inputs.

This warning looks like it came from a flip flop model that is telling you that its asynchronous CLR pin wiggled too soon after the rising edge of CLK for the flip flop to operate properly.

Chris

Reply to
Chris Alexander

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