Stats

Locked Locked
Replies 1
Subscribers 165
Views 12957
Members are here 0

Diff pair spacing rules

I have a diff pair route at 4-6-4 and it is part of our ADDR bus. The nets in the ADDR bus have a 12 mil line-to-line spacing to all nets within the ADDR bus and to all other nets. I am now getting a DRC spacing error to the two diff pair nets since they are being routed at 4-6-4. I thought there was a solution to this but can't remember.

Does anybody have an idea?

steve over 16 years ago

You need to make sure you are running at least Allegro Performance 16.2 latest hotfix. In Constraint Manager - Physical set the diff pair min line spacing to be 6. This should clear your DRC's.
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.