• 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. Custom IC SKILL
  3. How to get all the really used layer in the cellview .

Stats

  • Locked Locked
  • Replies 9
  • Subscribers 143
  • Views 17478
  • 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 get all the really used layer in the cellview .

Charley Chen
Charley Chen over 14 years ago

Hi All,

How to get all the really used layer in the cellview .

I use geGetEditCellView()~>lpps , it shows some layers that not really exists when stream out gdsii file from PIPO.LOG.

foreach(lpp geGetEditCellView()~>lpps

         printf("Layer is %L\n"  lpp)

 )

Thank you,

Charley

  • Cancel
Parents
  • Andrew Beckett
    Andrew Beckett over 14 years ago

    Derek raises a good point - although to clarify you will get the lpps used for both the pcell superMaster (which is effectively the layout corresponding to the default parameters) and all pcell subMasters (i.e. all variants that exist).

    This means that if you have layers used in the default, but in none of the actual variants used, then cv~>lpps will list these too. It errs on the side of too many lpps rather than too few.

    If you really need to filter out which are truly not used, you'd have to use an approach such as Derek suggests.

    Andrew.

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
Reply
  • Andrew Beckett
    Andrew Beckett over 14 years ago

    Derek raises a good point - although to clarify you will get the lpps used for both the pcell superMaster (which is effectively the layout corresponding to the default parameters) and all pcell subMasters (i.e. all variants that exist).

    This means that if you have layers used in the default, but in none of the actual variants used, then cv~>lpps will list these too. It errs on the side of too many lpps rather than too few.

    If you really need to filter out which are truly not used, you'd have to use an approach such as Derek suggests.

    Andrew.

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
Children
No Data

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