Stats

Locked Locked
Replies 1
Subscribers 166
Views 14019
Members are here 0

Match Group..... Option in Relative Propagation Delay is disabled

Tried to create a Match group of several differential pairs in Allegro Professional 17.2. The option is however disabled/greyed out for diferential pairs.
Tried the same with single ended signals and here the option was available, Then found that only NET types are possible to match this way.

How is it possible to match several differential pairs, Dpr types, that belongs to the same bus. 16 pairs in number.?
I found that It is possible to expand all the differential pairs (Dpr) and select their individual subnets (Net types) only, one by one, and then create a match group to match their lengths, but this seems a little awkward.

How may I proceed to match the lengths of multiple differential pairs and create a group of DPRs?

steve over 6 years ago

You wouldn't usually put both halves of a diff pair into a match group. If you use something like Static or Dynamic Phase rules this would match the diff pair halves together so you then only need to match one half in a match group since the other half is matched using the phase rules (if that makes sense). Match groups are usually net or pinpair based so hence it's not available for Group objects
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.