Stats

  • Locked Locked
  • Replies 5
  • Subscribers 92
  • Views 14436
  • 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

Is irregular shape LEF possible?

atwork

I have questions about typical LEF generation. 

1. If using virtuso (leftOut) to generate a LEF for top verilog netlist, does it need some modifications for class, site etc?

2. Can the LEF size be irregular? eg, like a L  or U shape.

3. If this particular macro has corner cells, and IO cells included, how to definte them in LEF? Or is it necessary?  Can IO assignemnt file handle a block like this? Any special work? I cannot find useful information from user guide.

Any suggestions welcome ! Thank you.

 

Parents

  • Hello,

    No modification of LEF coming from Virtuoso is normaly required if the view in OA has all the correct settings.

    Virtuoso and Abstract Generator can generate all the needed information in case the original view in OA contains all teh required settings.

    The LEF generated out of Virtuoso should be Encounter compatible if all settings are tehre in OA.

     I think some modifications are needed to be done inside Virtuoso.

     Thanks,

    Alex

     

Reply

  • Hello,

    No modification of LEF coming from Virtuoso is normaly required if the view in OA has all the correct settings.

    Virtuoso and Abstract Generator can generate all the needed information in case the original view in OA contains all teh required settings.

    The LEF generated out of Virtuoso should be Encounter compatible if all settings are tehre in OA.

     I think some modifications are needed to be done inside Virtuoso.

     Thanks,

    Alex

     

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.