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Please help Regarding Post route and placement simulation

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arunjatti

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at 703.065 ns(3): Warning: /X_FF HOLD High VIOLATION ON I WITH RESPECT TO CLK;
Expected := 0.192 ns; Observed := 0.061 ns; At : 703.065 ns
at 703.077 ns(3): Warning: /X_FF HOLD High VIOLATION ON I WITH RESPECT TO CLK;
Expected := 0.192 ns; Observed := 0.056 ns; At : 703.077 ns
at 703.112 ns(3): Warning: /X_FF HOLD Low VIOLATION ON I WITH RESPECT TO CLK;
Expected := 0.192 ns; Observed := 0.108 ns; At : 703.112 ns
at 703.345 ns(3): Warning: /X_FF HOLD High VIOLATION ON I WITH RESPECT TO CLK;
Expected := 0.192 ns; Observed := 0.098 ns; At : 703.345


When Im performing post route and placemnet sim , i have the above error and the output is also totalyy XXXXXXXXXXXXXXXXX
Can any one help me in this regard
Thanks in Advance
 

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