Why Do Negative Delays Occur in Timing Reports and What Do They Mean?

edadl

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Hello everyone,

I have been analyzing a timing report generated by Cadence Innovus, and I noticed that some nets show negative delays.
I'm unsure about the exact reasons.
Could someone please explain why these negative delays occur in the timing analysis?

 
Last edited:

inspect the lib file, look for the cell with the negative delay, just to make sure innovus is not messing up. most likely the cell delay is indeed negative.
 

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