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 TSMC 65nm GDS Import Problem 

Last post Wed, Feb 26 2014 12:08 PM by Kari. 3 replies.
Started by M Refaat 24 Feb 2014 02:04 PM. Topic has 3 replies and 1421 views
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  • Mon, Feb 24 2014 2:04 PM

    • M Refaat
    • Not Ranked
    • Joined on Mon, Feb 24 2014
    • Posts 5
    • Points 70
    TSMC 65nm GDS Import Problem Reply
    Hi there,

    I am using TSMC 65nm GP Standard Cell library in my design. After I finish P&R using encounter and export GDSII file, I am trying to import it to Virtuoso in order to have DRC/LVS using Calibre. The problem is that not all layers are imported, almost all layers used for power rings/routing are not there. I think the problem is the mapping file.

    So, I appreciate if any one has a solution for that or have a mapping file that is compatible with this technology.

    Best,
    • Post Points: 20
  • Tue, Feb 25 2014 9:41 AM

    • Kari
    • Top 10 Contributor
    • Joined on Tue, Jul 15 2008
    • Cary, NC
    • Posts 693
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    Re: TSMC 65nm GDS Import Problem Reply
    Are you saying the problem is with the mapping file in Encounter? Or the stream map file in Virtuoso? The stream map for virtuoso should have come from the foundry and is usually considered golden. You can create the encounter stream map from that. The format is in the documentation.
    • Post Points: 20
  • Wed, Feb 26 2014 11:33 AM

    • M Refaat
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    • Joined on Mon, Feb 24 2014
    • Posts 5
    • Points 70
    Re: TSMC 65nm GDS Import Problem Reply
    Thanks Kari for reply.

    What do you mean by steam map for Encounter?
    What I know is that I use the layermap for virtuoso to import the GDS. But, the issue of unmapped layers made me think that the problem is the mapping file used in Virtuoso.
    • Post Points: 20
  • Wed, Feb 26 2014 12:08 PM

    • Kari
    • Top 10 Contributor
    • Joined on Tue, Jul 15 2008
    • Cary, NC
    • Posts 693
    • Points 14,395
    Re: TSMC 65nm GDS Import Problem Reply

    When you export GDS from encounter, you need to use an encounter-format stream map. It's not the same format as the stream map for Virtuoso. The Encounter user guide explains the format. 

     The virtouso stream map should be good if it came from the foundry.  

    • Post Points: 5
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Started by M Refaat at 24 Feb 2014 02:04 PM. Topic has 3 replies.