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 route follow pins inside a block ring. 

Last post Thu, Sep 19 2013 12:02 PM by Kari. 2 replies.
Started by gops 19 Jul 2013 11:10 AM. Topic has 2 replies and 594 views
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  • Fri, Jul 19 2013 11:10 AM

    • gops
    • Top 75 Contributor
    • Joined on Wed, Sep 24 2008
    • Trivandrum, Kerala
    • Posts 118
    • Points 2,505
    route follow pins inside a block ring. Reply

    I have a softblock in my design. I want 

    1) create a block ring for the block "A" and the core  ring for other modules skipping the blobk "A". I tried to do this by creating a fence, but encounter don't exclude fence, it dumps an error to chech placement status of fence :(

    2) I want to create a separate stripe for block ring

    3) I want the block rings to have separate follow pins . Please tell me how I can do this without CPF.

     

    thanks

    gops

    • Post Points: 20
  • Tue, Aug 27 2013 10:39 AM

    • fitz
    • Top 150 Contributor
    • Joined on Wed, Aug 4 2010
    • Kanata, Ontario
    • Posts 56
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    Re: route follow pins inside a block ring. Reply

    addRing -type block_rings -around <user_defined>
    addStripe -break_stripes_at_block_rings

    Just out of curiosity....................................
    Why try an isolate common power domains ? 
    Secondly why explicitly no CPF ?

    Without a proper CPF they are by definition shorted together.
    You will have to do back flips to get any of the verification tools to work.

    The only legitimate reason I can think of for block rings rather than a continuous / homogenous power grid is when mixing standard cell heights in the same module and the M1 follow pins do not lineup.

     

     Shawn

     

    • Post Points: 20
  • Thu, Sep 19 2013 12:02 PM

    • Kari
    • Top 10 Contributor
    • Joined on Tue, Jul 15 2008
    • Cary, NC
    • Posts 693
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    Re: route follow pins inside a block ring. Reply
    addStripe and sroute both have -area options
    • Post Points: 5
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Started by gops at 19 Jul 2013 11:10 AM. Topic has 2 replies.