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How to count the number of digital gates used on my virtuoso schematic?

ericliu
I have used Cadence Virtuoso to compose a schematic which was made up of only standard digital gates from the foundry's libraries. Is there a tool that gives me the total number of gates appearing on my schematic? The schematic was composed in a hierarchical manner and I'd like to count the digital gates in all levels.
Can I also find out how many transistors are there on my schematic?
Thanks in advance.
Eric

  • Hi Eric,

    One thing that you might be able to do is to find these instances based on the cellname (or perhaps the inverse, what that cell is not named).  Here's a brief example:

    
  cv = geGetEditCellView()
  => db:0x452bdf92
  stdCells = setof(inst cv~>instances rexMatchp("^std" inst~>cellName))
  => (db:0x452bdc12 db:0x452bdc13)
  count = length(stdCells)
  => 2

     In the example above, we are searching for a cell instance which has a cell name that starts with "std", using a regular expression match within a setof expression.  You can try searching for solutions that expand or follow the hierarchy, the way that a netlister might, in order to get hierarchical information. Also there is a "Tree" function for layouts, and solutions for schematic Tree code - search for these to get a hierarchical listing of a design.

    I hope that this code snippet and information helps you to get started.

    Regards,

    Lawrence.

  • You could probably use code similar to Cadence Online Support Solution 11581916

    It would need a bit of tweaking (because this is just to count leaf cells) but wouldn't be too hard to modify.

    Regards,

    Andrew.

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