Stats

  • Locked Locked
  • Replies 12
  • Subscribers 126
  • Views 19233
  • 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

Using the Virtuoso autorouter: routing grid

RVERP

How do I set the routing grid? I can use the option to route on the routing grid, but I can't find how to check it's value, or how to set a new value.

I want to force the autoroute to place spines/vias on the exact grid I want, so I suppose the routing grid is what I have to use.

Parents
  • ColinSutlieff

    Hi,

    The routing pitches are determined by a lookup mechanism that starts with the settings that you have in your Wire Editor environment and ends with settings in the Process Rule Override.

    (PRO have the highest priority)

    Because I have no access to your data I will make some guesses (based on a typical setup):

    You have a Constraint Group called "LEFDefaultRouteSpec" defined in your technology library. This contains the routing grid and offset definitions

    You have loaded this constraint in your Wire Assistant.

    You have setup route to "routing grid" and nothing happens........:(

    Here is one last suggestion. If this doesn't work we need to ask you to contact customer support.

    Go to options->Editor

    Look at the section "wire editing (wire)" 

    Make sure that the Default Wire Constraint Group "LEFDefaultRouteSpec" is specified.

    Try routing again.

    Let us know if this works.

    Regards

    Colin

Reply
  • ColinSutlieff

    Hi,

    The routing pitches are determined by a lookup mechanism that starts with the settings that you have in your Wire Editor environment and ends with settings in the Process Rule Override.

    (PRO have the highest priority)

    Because I have no access to your data I will make some guesses (based on a typical setup):

    You have a Constraint Group called "LEFDefaultRouteSpec" defined in your technology library. This contains the routing grid and offset definitions

    You have loaded this constraint in your Wire Assistant.

    You have setup route to "routing grid" and nothing happens........:(

    Here is one last suggestion. If this doesn't work we need to ask you to contact customer support.

    Go to options->Editor

    Look at the section "wire editing (wire)" 

    Make sure that the Default Wire Constraint Group "LEFDefaultRouteSpec" is specified.

    Try routing again.

    Let us know if this works.

    Regards

    Colin

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.