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 Same net via to via spacing drc suppressed 

Last post Mon, Dec 6 2010 12:17 PM by Idaho Tom. 0 replies.
Started by Idaho Tom 06 Dec 2010 12:17 PM. Topic has 0 replies and 1532 views
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  • Mon, Dec 6 2010 12:17 PM

    • Idaho Tom
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    • Joined on Tue, May 19 2009
    • Posts 2
    • Points 40
    Same net via to via spacing drc suppressed Reply

    In SPB 16.3 hotfix 20 (maybe implemented in 18) Allegro Constraint manager will no longer report a same net via to via spacing drc if those vias are covered (direct connect) by a shape. Cadence says that once the via is covered with a shape the pad ceases to exist and it simply becomes a hole to hole issue. Technically I can see the point. However it forces me to think in a different manner (not necessarily bad) 

    Does anyone see any potential problem with the tool failing to report a DRC for same net V\V spacing when those vias are direct connected to a shape?

    • Post Points: 5
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Started by Idaho Tom at 06 Dec 2010 12:17 PM. Topic has 0 replies.