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Replace Blind Via with Blind/Buried Stacked Via?

Tmills

Hey guys,

I have a 10 layer design with a Blind 22/8 via from layers 1-9. I need to have a blind micro via from L1-L2 on the top of this via. Is there a way to do a global replace of my L1-L9 via with my stacked L1-L2+L2-L9 via?

I know I can do a global replace of the L1-L9 via with the L2-L9 via, but that will leave a disconnect from L1-L2. I currently have roughly 27,000 of these vias in the design so finding a global replace would be a bit of a timesaver.

Thanks in advance!

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  • masamasa

    I would create two identical files of your design.

    File A has L2-L9 vias which are gloabally replaced from L1-L9 vias.

    File B has L1-L2 vias which are gloabally replaced from L1-L9 vias.

    The L1-L2 vias are exported out as sub-drawing from File B and imported as sub-drawing into File A.

    Now File A has both L1-L2 vias and L2-L9 vias.

  • redwire
    in reply to masamasa

    Brilliant!  That is a fantastic solution.  One more thing that might be useful is to export the X,Y locations of every via and its type and then do a compare in Excel after masamasa's idea.  There are a few via location SKILL tools available online.

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  • redwire
    in reply to masamasa

    Brilliant!  That is a fantastic solution.  One more thing that might be useful is to export the X,Y locations of every via and its type and then do a compare in Excel after masamasa's idea.  There are a few via location SKILL tools available online.

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