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  5141 layout: draw/place multiple paths/shapes/symbolics  

Last post Mon, Jul 13 2009 4:29 PM by Austin CAD Guy. 2 replies.
Started by stuso 23 Jun 2009 08:04 AM. Topic has 2 replies and 1365 views
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  • Tue, Jun 23 2009 8:04 AM

    • stuso
    • Top 100 Contributor
    • Joined on Mon, Nov 3 2008
    • Posts 77
    • Points 1,315
    5141 layout: draw/place multiple paths/shapes/symbolics Reply

     Hi All, i just posted this question on the cadence google forum:

    is there a simple way to draw 2 or more overlay'd paths/rectangles at
    once in various layers. Its for metal strapping and custom metal
    fill.  I'd use a pCell but i'd like Vxl (this is 5141) to recognise
    the connection has been made. Same with vias, if i place e.g a 2x2
    Via1 it would be nice to place a 2x2 Via2,3...etc at the same time.

    Occasionally i use arrayed pCells (mosiace) for the above but as i
    said XL does not see the connectivity & more importantly does not
    flash like crazy when the user creates a short. For this reason larger
    cells are proving hard to debug in LVS with multi-layer dense routing.

    Thanks

    Stu

    • Post Points: 35
  • Tue, Jun 23 2009 10:16 AM

    Re: 5141 layout: draw/place multiple paths/shapes/symbolics Reply

    rodCreatePath() or rodCreateRect(). These are multi-part paths or rectangles.

    Or you might want to create a via pcell.

    With IC613 there's a very easy way to create stacked vias with the Create Via command.

    Regards,

    Andrew.

     

    • Post Points: 5
  • Mon, Jul 13 2009 4:29 PM

    Re: 5141 layout: draw/place multiple paths/shapes/symbolics Reply

     Be careful using mosaics as they do not contain connectivity information in XL. You probably want to create a pcell with the parameters of a starting and stopping layers and the number of rows/columns or length/width. Calculate the intermediate vias and metals (don't forget your minimum area rule for a 1x1 via). The Autocontact/stitch commands usually create the proper size vias as well.

     Ted

    • Post Points: 5
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Started by stuso at 23 Jun 2009 08:04 AM. Topic has 2 replies.