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PR Boundary

pitter

Hello,

When drawing layout from schematic, there is a PR Boundary option in the  'Generate All From Source' dialog box. It is depicted as a cyan field, that covers other layers. Placing a transistor (or ony other cell) on it makes it invisible (the PR boundary covers it). What is its purpose and what does the abbreviation 'PR' stand for? The PR Boundary cyan layer is not even present in LSW window, but there is a prBoundary layer of violet color.

Kind Regards,

pitter.

Parents

  • Bringing this thread back to life....

    In IC6.1.X, is there a gds layer number for prBoundary?  I don't see any in the dumped techfile.

    Is it because it's a "special object" there's no gds layer number for it?

    grep prBoundry from techfile returns :

      ( prBoundary                drawing    )
      ( prBoundary                label      )
      ( prBoundary                boundary   )
      ( prBoundary   drawing      prBoundary_drawing t t t t t )
      ( prBoundary   label        prBoundary_label t t t t nil )
      ( prBoundary   boundary     prBoundary_boundary t t t t nil )

     

    Thanks

     

     

     

     

Reply

  • Bringing this thread back to life....

    In IC6.1.X, is there a gds layer number for prBoundary?  I don't see any in the dumped techfile.

    Is it because it's a "special object" there's no gds layer number for it?

    grep prBoundry from techfile returns :

      ( prBoundary                drawing    )
      ( prBoundary                label      )
      ( prBoundary                boundary   )
      ( prBoundary   drawing      prBoundary_drawing t t t t t )
      ( prBoundary   label        prBoundary_label t t t t nil )
      ( prBoundary   boundary     prBoundary_boundary t t t t nil )

     

    Thanks

     

     

     

     

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