Permute pins -VXL 5141

Discussion in 'Cadence' started by stuart.duncan, Jun 2, 2009.

  1. stuart.duncan

    stuart.duncan Guest

    Hi, i'd like to manually swap pins, drain and source for a multi
    fingered MOS.

    I'm following the steps in VXL manual but the flight lines do not
    swap. There is no warning or error in the icfb. Further reading
    suggests that i need to do something with: permuteRule in CDF.

    If this is the case, Is it ok to do this on a an entire library or
    should it be done in a cell by cell basis or on an entire library? is
    it the library from which the pCell originates or the library from
    which it was instantiated.

    any advice/further reading is appreciated.

    Thanks

    Stuart
     
    stuart.duncan, Jun 2, 2009
    #1
  2. stuart.duncan

    Marc Heise Guest

    Hi Stuart,

    that's completely up to you. If you want all instances of that device
    able to switch pins then you should set the permuteRule on the master
    device in the library (put it on the symbol or in the CDF).
    It's not an option you can set generally for a whole library, you have
    to define it on the devices.

    Kind regards,
    Marc
     
    Marc Heise, Jun 2, 2009
    #2
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