• 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. PCB Design
  3. Limit distance from line to antipad from Autoroute?

Stats

  • Locked Locked
  • Replies 1
  • Subscribers 164
  • Views 12763
  • Members are here 0
More Content
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

Limit distance from line to antipad from Autoroute?

archive
archive over 17 years ago

Hi,

I am trying autoroute the first time and pretty new to Allegro. The cline generated by autoroute are all touching the antipad. Is there a simple way to adjust, say, the line have to be at least 8 mil away from the antipad or in some case, mid point between two antipad?

I know that it is possible to set constrain area and defind them at individual area but are there a more general setting? Using 15.1.

Thanks.


Originally posted in cdnusers.org by Lordman
  • Cancel
  • archive
    archive over 17 years ago

    Hi,
    There is no setting for cline to antipad. clearances are copper to copper. You can try to adjust your cline to pad clearance or
    reduce the size of the antipad. I would check with my fab house before just reducing the size. There is a setting in the gloss commands in the autorouter to center lines.
    In version 16.0 Allegro XL there is a check for trace over void which checks for this type of thing.
    Unless this is a high speed impedance controlled board some trace over hang shouldn't be a problem.
    Here is another post on this same subject. http://www.cdnusers.org/Forums/tabid/52/forumid/5/postid/8004/view/topic/Default.aspx

    Regards,
    BillZ
    EMA Design Automation


    Originally posted in cdnusers.org by BillZ_EMA
    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
Cadence Guidelines

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