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Other CAD Tools >> Physical Verification, Extraction and Analysis >> Why no CAP and RES check report in LVS resul
https://designers-guide.org/forum/YaBB.pl?num=1120122845

Message started by jayjay on Jun 30^th, 2005, 2:14am

Title: Why no CAP and RES check report in LVS resul
Post by jayjay on Jun 30^th, 2005, 2:14am

Dear all,

I am using the PDRACULA to do LVS, in the netlist there is description of CAP and RES such as:

Cp n1 n2 1p
xR2 n3 n4 rnwell l=100u w=3u

But there is no CAP and RES check report in the final LVS result. Would you please tell me why.

Thanks in advance
Jay

Title: Re: Why no CAP and RES check report in LVS resul
Post by jayjay on Jun 30^th, 2005, 10:09pm

I guess that the LOGLVS complier can not regonize the RES and CAP in the input netlist, is it right?

Title: Re: Why no CAP and RES check report in LVS resul
Post by Andrew Beckett on Jul 4^th, 2005, 2:25am

In your CDL netlist, you need to have (at the top, although not on the first line):

Code:

*.BIPOLAR
*.CAPVAL
*.RESVAL

The *.BIPOLAR is needed in order for LOGLVS to realise that it is not a MOS-only design (the use of the word bipolar is a little archaic) - essentially, the idea was that resistors and capacitors would be representing parasitics, perhaps, and so should be filtered out in normal usage for LVS.

Regards,

Andrew.

Title: Re: Why no CAP and RES check report in LVS resul
Post by jay_lin on Jul 14^th, 2005, 6:32am

Dear Andrew,

Thank you for your three-times' helps, I am so grateful.

Have a nice day!!
Jay