common-centroid using Layout XL

Discussion in 'Cadence' started by arslanumut, Feb 9, 2006.

  1. arslanumut

    arslanumut Guest

    Hi,

    How can I draw common-centroid layouts using Virtuoso Layout XL?

    Thanks,
    Umut
     
    arslanumut, Feb 9, 2006
    #1
  2. arslanumut

    TimRoy1 Guest

    Hi Umut,

    The schematic can either be drawn with mutiple transistors for the ones
    in parallel or they can use the buss naming convention for the instance
    name, M1<0:3> will give you 4 individual M1 devices connected in
    parallel.

    Best Regards,
    Tim
     
    TimRoy1, Feb 10, 2006
    #2
  3. arslanumut

    Erik Wanta Guest

    Umut:
    In the layoutXL options enable the option generate multiple instances.
    When you import the iterated instance or one with a mFactor it will
    create individual devices in the layout. You can then manually place
    and route the the instances to achieve common centroiding.

    Note Cadence has another tool called Neocell that automates common
    centroiding.
     
    Erik Wanta, Feb 25, 2006
    #3
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