Stats

  • Locked Locked
  • Replies 5
  • Subscribers 124
  • Views 14801
  • 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

VXL: Setup Vias for Shield Constraints?

JoeyT

Hi All,

I've been exploring the shield constraints for routing in VXL. One thing though that I can't find a setup a for is the vias for the shield lines. Everytime I change metal layers, the shields follow, but somehow they don't create vias for themselves to stay connected. is there a way to set it up that the shields run along the 'net' they are protecting like normal routing? the picture below describes my question. basically I prefer the image on the right, but all I get is the one on the left. is there a setup for this? I really appreciate the help. thanks in advance :)

Parents
  • skillUser

    Hi Joseph,

    I've certainly seen this in the past, that the shields are not fully connected when changing metal layer.  I have a feeling that this is a known limitation of the shielded net routing, however, my information is probably old - are you using the latest version of virtuoso (IC617/ICADV12.2) ? It is probably worth filing a service request with Cadence to request that this is improved (if they have not done so already).

    Cheers,

    Lawrence.

Reply
  • skillUser

    Hi Joseph,

    I've certainly seen this in the past, that the shields are not fully connected when changing metal layer.  I have a feeling that this is a known limitation of the shielded net routing, however, my information is probably old - are you using the latest version of virtuoso (IC617/ICADV12.2) ? It is probably worth filing a service request with Cadence to request that this is improved (if they have not done so already).

    Cheers,

    Lawrence.

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.