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 TLU support for RC? 

Last post Wed, Feb 8 2012 8:43 AM by grasshopper. 3 replies.
Started by Alex Kli 08 Feb 2012 07:53 AM. Topic has 3 replies and 3463 views
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  • Wed, Feb 8 2012 7:53 AM

    • Alex Kli
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    • Joined on Mon, Sep 19 2011
    • Posts 5
    • Points 85
    TLU support for RC? Reply

    Hi,

    is there a possibility in Cadence RC to use TLU or TLU+ data for synthesis?

     Alex'

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    • Post Points: 20
  • Wed, Feb 8 2012 7:57 AM

    • grasshopper
    • Top 25 Contributor
    • Joined on Thu, Jul 17 2008
    • Chelmsford, MA
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    Re: TLU support for RC? Reply
    Hi Alex, not that I am aware of. I would think any such solution would be customized to your specific needs. What tools are you using? I would guess your best bet is any such tools would be able to do translation for you gh-
    • Post Points: 20
  • Wed, Feb 8 2012 8:12 AM

    • Alex Kli
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    • Joined on Mon, Sep 19 2011
    • Posts 5
    • Points 85
    Re: TLU support for RC? Reply

    Hi,

    I'm currrently trying to produce similar synthesis results with RC and DC. RC takes standard WLMs as input, DC uses TLU(+). As far as I know these approaches are completly different. Consequently it is hard to determine reasons for different synthesis results if each tool works with other inputs.

     

    Alex

    • Post Points: 20
  • Wed, Feb 8 2012 8:43 AM

    • grasshopper
    • Top 25 Contributor
    • Joined on Thu, Jul 17 2008
    • Chelmsford, MA
    • Posts 242
    • Points 3,205
    Re: TLU support for RC? Reply
    Hi Alex, while RC does support WLMs, the recommended flow has been the use PLE (Physical Layout Estimators) for several years now. PLEs rely on DEF, LEF, and capTbl information hence provide the most accurate modelling. As per exercise in correlation, you need to take to preCTS to really do meaningful correlation. A TLU+ vs PLE number will be comparing apples and oranges. You can go into RC and/or DC and generate a SPEF to be read in the other tool but a flow of reading SPEF and optimizing is quite useless since the only to keep SPEF annotation meaningful is to not optimize. hope this helps, gh-
    • Post Points: 5
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Started by Alex Kli at 08 Feb 2012 07:53 AM. Topic has 3 replies.