Uncertainty defined on the ports

[raviram80]

Hi All,

I would like to know what is the uncertainty in Primetime.

Before CTS is done uncertainty is Clock Skew and Jitter.

After CTS is done uncertainty is only Jitter.

I would like to know what could be the uncertainty besides the Jitter.

Please let me know.

Thanks,

Ravi

 

[ljxpjpjljx]

you can see the PT manual for reference!

 

[jpvSoccer]

Hi, just an FYI

After CTS you just need to be sure you PROPAGATE_CLOCKS so that the insertion delay is properly tabulated to all of the flop clock pins. This propagation replaces the uncertainty a design has on clocks prior to building the trees.