• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. Digital Implementation
  3. How to perform ocv-aware CTS?

Stats

  • Locked Locked
  • Replies 2
  • Subscribers 90
  • Views 13255
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

How to perform ocv-aware CTS?

Rajesh Vembu
Rajesh Vembu over 15 years ago

Can someone share some thoughts on how to perform ocv-aware CTS?

Is there any difference, in considering ocv factor, if we do CTS it in single mode or multi-mode?

  • Cancel
  • Kari
    Kari over 15 years ago

     Please see the section in the User Guide called "Delay Variation and OCV" in the "Synthesizing Clock Trees" chapter.

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • raffa
    raffa over 14 years ago

    Hi Kari,

    The manual doesn't say much on how to perform OCV aware CTS.

    The OCV aware CTS would help a lot in hold fixing. Sometimes two

    FFs that are very close and talk to each other, belong to 2 completely

    different branches of clock tree; the OCV aware CTS would bring one

    of the FFs on the other branch swapping w/ another FFs. Of course we

    cannot expect to clean up everything but this should allow hold violation

    reduction. To do this the "feature" should look at the constraints and being

    timing aware to be able to "see" the hold paths.

    Regards,

     Raff

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information