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how do i set wire width and space for a particular net?

flyinmeteor

see title

Parents

  • Hi Ttran,

    First of all, I want to report that I was not able to get it to work, despite trying all the suggestions by Kari.

    But I would like to suggest another solution that  was in fact much more powerful for my case. I have used the mixed signal routing capability of Encounter. You can easily control many constraints.  I did that during the floorplan stage. Here is a pratical example to have this running easily:

    Encounter command:

    #special nets to probe pads
    routeMixedSignal -nets {pad_VPPD1 pad_VPPD2} -constraintFile MyConstraint.const

    MyConstraint.const  file (in the working directory):

    NETS
      WIDTH 8.000000
      SPACING 0.230000
      MAXRES 11.000000
      TAPERING
      MINCUT 16
      ROUTELAYERS M1:M3
         pad_VPPD1
    END NETS

    NETS
      WIDTH 15.000000
      SPACING 0.230000
      MAXRES 20.000000
      TAPERING
      MINCUT 64
      ROUTELAYERS M1:M3
         pad_VPPD2
    END NETS

    Please, try it, you will like it !

    Patrice

Reply

  • Hi Ttran,

    First of all, I want to report that I was not able to get it to work, despite trying all the suggestions by Kari.

    But I would like to suggest another solution that  was in fact much more powerful for my case. I have used the mixed signal routing capability of Encounter. You can easily control many constraints.  I did that during the floorplan stage. Here is a pratical example to have this running easily:

    Encounter command:

    #special nets to probe pads
    routeMixedSignal -nets {pad_VPPD1 pad_VPPD2} -constraintFile MyConstraint.const

    MyConstraint.const  file (in the working directory):

    NETS
      WIDTH 8.000000
      SPACING 0.230000
      MAXRES 11.000000
      TAPERING
      MINCUT 16
      ROUTELAYERS M1:M3
         pad_VPPD1
    END NETS

    NETS
      WIDTH 15.000000
      SPACING 0.230000
      MAXRES 20.000000
      TAPERING
      MINCUT 64
      ROUTELAYERS M1:M3
         pad_VPPD2
    END NETS

    Please, try it, you will like it !

    Patrice

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