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 How to modify a automatically generated instance. 

Last post Thu, Nov 5 2009 7:00 AM by Andrew Beckett. 2 replies.
Started by pitter 05 Nov 2009 05:48 AM. Topic has 2 replies and 2675 views
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  • Thu, Nov 5 2009 5:48 AM

    • pitter
    • Top 500 Contributor
    • Joined on Tue, Nov 3 2009
    • Warsaw, Poland
    • Posts 29
    • Points 485
    How to modify a automatically generated instance. Reply

     Hi,

    After inductor cell generation (done with Passive Component Designer - PSD) I made DRC check, that found errors in the  layout schematic. The problem is that some vias are placed too near to the edge of the polysilicon Patterned Ground Shield - PGD. I tried to remove the vias or correct the layout, but it cannot be edited in the way that allows for example deleting of single vias/components. The whole inductor layout is devided into two 'instances' - the inductor and PGD. They are treated as a whole and none of the comrising components like vias can be moved or deleted. I have tried using edit commands like chop, ungroup, split.. no success.
    Anyone has idea how to handle it? It is strange that tool generates layout that does not conform to DRC rules...

    • Post Points: 20
  • Thu, Nov 5 2009 6:23 AM

    • tkhan
    • Top 50 Contributor
    • Joined on Sat, Aug 16 2008
    • Toronto, Ontario
    • Posts 159
    • Points 2,220
    Re: How to modify a automatically generated instance. Reply

    Select the PCD inductor and do Edit->Hierarchy->Flatten. PCD also creates a layout_flat view, you can edit that one and do DRC on it.

    • Post Points: 20
  • Thu, Nov 5 2009 7:00 AM

    Re: How to modify a automatically generated instance. Reply

    Also, I should point out that Virtuoso Passive Component Designer has been discontinued since the end of 2008. 

    Regards,

    Andrew.

    • Post Points: 5
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Started by pitter at 05 Nov 2009 05:48 AM. Topic has 2 replies.