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 Is there a way to use CTS with differential (diffpair) clocks? 

Last post Tue, Aug 13 2013 8:19 AM by fitz. 1 replies.
Started by TomLM 12 Jul 2013 08:25 AM. Topic has 1 replies and 423 views
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  • Fri, Jul 12 2013 8:25 AM

    • TomLM
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    • Joined on Fri, Jul 12 2013
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    Is there a way to use CTS with differential (diffpair) clocks? Reply

    Hi,

     I am researching an implementation idea to use Clock Tree Synthesis (CTS) to route a clock tree that consists of a differential clock.  The desired results would be a clock tree that is routed as a diff pair, with differential / matched buffering throughout.

    Thanks.

    • Post Points: 20
  • Tue, Aug 13 2013 8:19 AM

    • fitz
    • Top 150 Contributor
    • Joined on Wed, Aug 4 2010
    • Kanata, Ontario
    • Posts 56
    • Points 745
    Re: Is there a way to use CTS with differential (diffpair) clocks? Reply

    You are going to need the Cadence mixed signal "Virtuoso Layout Suite GXL" option to do clean diff pair clock routing.
    There is a chapter in the encounter user guide worth reading "Using the Encounter Mixed Signal Router"
    I successfully used it for a "one off"  bicmos chip over 15 years ago, it was fairly easy to learn.

    Shawn

    • Post Points: 5
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Started by TomLM at 12 Jul 2013 08:25 AM. Topic has 1 replies.