I am designing a VCDL for DLL. But the PSS analysis is not converging. I am trying to change "reltol" value but @ very begining of simulation it is showing a warning
'reltol' is not a valid parameter for an instance of `pss' . Ignored
Can anyone tell me if I can change reltol value at all in PSS analysis?
Setting errpreset=liberal on the PSS is as loose as we allow. It really doesn't make sense to loosen the tolerances too much with PSS as typically you want a reasonable dynamic range in whatever you're simulating with PSS.
Did you try that?