hierarchical LVS

Discussion in 'Cadence' started by Moises Paniagua, Apr 29, 2004.

  1. Moises Paniagua

    Moises Paniagua Guest

    Hi!

    I would like to know how I can do a hierarchical LVS
    in order to check just the connections I have done in the
    present layer, not the ones previously done.

    Many thanks,

    Moisés Paniagua
     
    Moises Paniagua, Apr 29, 2004
    #1
  2. Moises Paniagua

    S. Badel Guest

    that is called macro mode lvs or blackbox lvs.
    the way you do it depends on the verification software you use
    diva, assura?

    for diva it is easy, you check the "macro-cell" in the extract options
    form. i think however that you must have df2 pins in your layout for
    this to work.
    there is also the ivCellType property which you can set on individual
    cells as "graphic" for flat extraction and "macro" for macro-block
    extraction.

    for assura you need to have df2 pins recognized in your lvs rules.
    then, you use the ?blackBoxCell switch to specify which cells to
    process as macro cell.

    hope this helps,

    stéphane
     
    S. Badel, Apr 29, 2004
    #2
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