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

stuso

 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

  • 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.

     

  •  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

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