to netlist a device for CDL but not for simulation

Discussion in 'Cadence' started by Frédéric BATTIN, Feb 11, 2010.

  1. Hello,
    I have 2 instances ( A and B ) of the same device in a schematic.
    For simu I want to netlist only instance A
    For LVS I want to netlist A and B
    In other words for simu, I only want to netlist A and for LVS I want
    to netlist A and B.
    nlAction ignore is not a good idea because there is not difference
    between simu and LVS
    Thank you for your ideas .
    Fred
     
    Frédéric BATTIN, Feb 11, 2010
    #1
  2. Frédéric BATTIN

    rick Guest

    Hi Fred - would making one of them a blackBox work out?

    Rick
     
    rick, Feb 11, 2010
    #2
  3. Frédéric BATTIN wrote, on 02/11/10 14:31:
    Fred,

    One approach would be to copy the symbol of the device to a view called (say)
    "ignore", and then open this ignore view and add a cellView property "nlAction"
    with value "ignore".

    Then create a config view with the hierarchy editor for the cell you wish to
    simulate, and set instance B to have the "view to use" to be the "ignore" view.

    Regards,

    Andrew.
     
    Andrew Beckett, Feb 15, 2010
    #3
  4. Frédéric BATTIN

    Riad KACED Guest

    Salut Fred,

    If your 2 instances always go in pair, then you may consider creating
    a super-symbol that encompasses both of them. You may then create a
    Spectre/Eldo view for this super symbol where you tell the netlister
    to take only inst A. This can be done with either CDF simInfo or by
    pointing to a given subckt. As for LVS, you let the netlister taking
    the schematic view where both instances are dealt with in the same
    manner.

    This solution may be very handy if your '2 instances' are used as a
    pattern. I would go with Andrew's HED solution otherwise.

    Cheers,
    Riad.
     
    Riad KACED, Feb 27, 2010
    #4
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