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Is there any way to get only metals exempting the base layers

LakshmanQual

Hi All,

I am working with some metal shapes in the layout. When i try to get the details to the list, I am getting all layers including base layers.

Is there anyway to get only the metal shapes irrespective of path, rect or polygon. Even if they are in group, I need those metal details.

Thanks for the help. 

Parents
  • Kevin Buck

    It's very unclear what you're asking. You can always iterate over the shapes and then use an if or case statement to execute based on the lpp property. For example:

    layView = dbOpenCellViewByType(libName cellName "layout" "" "r")

    foreach(shape layView~>shapes
        if(shape~>lpp == list("MET1" "drawing") then
            ;do something here
        )
    )
  • LakshmanQual
    in reply to Kevin Buck

    Hi Kevin, Thanks for answering.

    I got list of shapes with cvid~>shapes earlier.

    But with this i am getting all the shapes of that layout. I want to segregate only metals from that. As different process or tech nodes will have different naming conventions, I cant use "MET1" or "MET2" directly. Is there any unique property i can separate only metals out of all those shapes?

Reply
  • LakshmanQual
    in reply to Kevin Buck

    Hi Kevin, Thanks for answering.

    I got list of shapes with cvid~>shapes earlier.

    But with this i am getting all the shapes of that layout. I want to segregate only metals from that. As different process or tech nodes will have different naming conventions, I cant use "MET1" or "MET2" directly. Is there any unique property i can separate only metals out of all those shapes?

Children
  • Kevin Buck
    in reply to LakshmanQual

    Not that I'm aware of but you can probably create a lookup file that sources your technology file to find them. I've worked with several PDKs and there are usually not too many variations on the layer names.

  • Andrew Beckett
    in reply to Kevin Buck

    tf=techGetTechFile(cv)
    metalLayerNames=mapcar('car setof(function techGetLayerFunctions(tf) cadr(function)=="metal"))

    will do it.

    Andrew

  • LakshmanQual
    in reply to Andrew Beckett

    Thanks Andrew, Its working. It was a great help!!

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