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Encounter DEF file export

rayz

I am trying to export my layout from Encounter to Cadence DFII ennvironment using DEF format.  Apparently the DEF file generated by Encounter does not contain all the VIA definitions or Virtuoso has problem reading them since when the design is imported in Virtuoso some of the VIAs are missing and I see warniong message that VIA definitions are missing. Do you have any experince dealing with this issue.

Thanks

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  • Kari

     Hi,

    It may have been better to start a new thread with this question, coffeelox - since you're looking to streamOut of Encounter and not DEFin to DFII, as the original poster was. Anyway, I'll take a stab at it...

    Yes, the format of the layer map file for Encounter's streamOut is completely different from a DFII gds map file. It's usually a lot shorter, since Encounter only deals with metal layers. You may need to create the Encounter gds map file if it was not part of the tech data delivered by the foundry. The DFII gds map file is usually part of the deliverables from the foundry. I don't know what the difference is between the two you have (cds2gds and gds2cds).

    It looks like you've already found the format for the Encounter map file in the User Guide. Also take a look at the streamOut command in the Text Command Reference. You'll want to specify the map file in this command. You will get a gds2 file that you can read into DFII.

    When you read the Encounter GDS file into DFII, you'll need to use the DFII gds map file.

    I'm not sure if this completely answers your question, but I hope it helps.

    - Kari

     

Reply
  • Kari

     Hi,

    It may have been better to start a new thread with this question, coffeelox - since you're looking to streamOut of Encounter and not DEFin to DFII, as the original poster was. Anyway, I'll take a stab at it...

    Yes, the format of the layer map file for Encounter's streamOut is completely different from a DFII gds map file. It's usually a lot shorter, since Encounter only deals with metal layers. You may need to create the Encounter gds map file if it was not part of the tech data delivered by the foundry. The DFII gds map file is usually part of the deliverables from the foundry. I don't know what the difference is between the two you have (cds2gds and gds2cds).

    It looks like you've already found the format for the Encounter map file in the User Guide. Also take a look at the streamOut command in the Text Command Reference. You'll want to specify the map file in this command. You will get a gds2 file that you can read into DFII.

    When you read the Encounter GDS file into DFII, you'll need to use the DFII gds map file.

    I'm not sure if this completely answers your question, but I hope it helps.

    - Kari

     

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