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Problem in running LVS in Assuran

behrooz

Hi all,

I'm using IBM design kit for Cmrf8sf (V1.4.0.7DM), Assura version 3.2-5141, and Cadence version ic5.141USR5. A couple of month ago, I drew the layout of a big circuit and ran DRC/LVS/RCX and after cleaning up every error, I submitted the layout to Mosis for fabrication. The chip has been fabricated and now I'm measuring it. I'm skeptic regarding one part of the chip, so that's why I tried to repeat the whole process(DRC/LVS/RCX), again. As, the former server is not functioning any more, i copied whole the library (schematic/layout), to a new server, with the same bashrc, cds.lib, and other configurations. The problem is that, DRC works fine, and gives to error, but LVS doesn't complete completely, and returns back with the below errors:

 "Error:  There are two or more descriptions of the device with identical type ('Generic'), and name ('nfet_rf'), however number of terminals are not the same, details are given below.

'nfettw_rf aulvs cmrf8sf' pin names : [D G S B PI sx]  dfII terminal names: [D G S B PI sx]

'nfet_rf aulvs cmrf8sf' pin names: [D G S B]  dfII terminal names: [D G S B]

1 error(s) encountered, vldb not generated

Error- dfIITovldb  failed to execute

 

and then after some warnings:

*Warning* An error occured during Nvn PreExtraction. 

aveng terminated abnormally"

As I told, layout had already passed LVS, with no error, and I've not changed anything. Now even LVS doesn't run completely. If anybody has an idea, I'd be grateful if let me know about it.

 

Thanks

Parents

  • Thanks Zach for the reply.

    But as you have read, in my former posting, I'm doing DRC/LVS/RCX on a library which has already been created with design kit V1.4.0.7DM. I tried to change the design kit with settings pointing to newer ones, but then even I can't open ADE, it freezes. Can we simulate a schematic, created with an older design kit, with a newer version? I can't draw the whole circuit and layout from begginig, as circuit and layour are pretty big.

     

    Regards

    Berhooz 

Reply

  • Thanks Zach for the reply.

    But as you have read, in my former posting, I'm doing DRC/LVS/RCX on a library which has already been created with design kit V1.4.0.7DM. I tried to change the design kit with settings pointing to newer ones, but then even I can't open ADE, it freezes. Can we simulate a schematic, created with an older design kit, with a newer version? I can't draw the whole circuit and layout from begginig, as circuit and layour are pretty big.

     

    Regards

    Berhooz 

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