• Skip to main content
  • Skip to search
  • Skip to footer
Cadence Home
  • This search text may be transcribed, used, stored, or accessed by our third-party service providers per our Cookie Policy and Privacy Policy.

  1. Community Forums
  2. Custom IC Design
  3. PVS LVS

Stats

  • Locked Locked
  • Replies 7
  • Subscribers 126
  • Views 17603
  • 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

PVS LVS

Stefan Keil
Stefan Keil over 11 years ago
Hi all,
 
I did a digital design and when I want to do an LVS it says that the FEED cells (for example: FEED1LJI3V) are in the schematic but not in layout. If I want to filter them with blackbox I got an error regarding my supply and ground voltages (I did not use the vdd3i!, gnd3i!). With Assura I could filter these cells from schemtic but I did not found a proper solution for that that works in PVS.

It would be very nice if anyone can give me a solution for this.

 Thanks a lot,

Stefan 
  • Cancel
  • Quek
    Quek over 11 years ago

    Hi Stefan

    Would you please let us know if you had used the following 2 PVS cmds to filter the blackboxes?

    lvs_blackbox FEED1LJI3V
    lvs_filter_device FEED1LJI3V -open

    Would you also please let us know the full PVS error message?

    Best regards
    Quek

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Stefan Keil
    Stefan Keil over 11 years ago

    Hi Quek,

     for this command (lvs_filter_device FEED1LJI3V -open) I get the following errorin a popup window:
     Rules -> Rules Files(s): Include PVL Rules contains unsupported commands.

     If I use only the blackbox I got these errors in the picture. I think your plan is to filter them with the first command.

    Best regards,

    Stefan 

     

     

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Quek
    Quek over 11 years ago

    Hi Stefan

    If you are using an SVRF rules file, would you please try the following cmds and let us know if it helps?

    lvs box FEED1LJI3V
    lvs filter FEED1LJI3V open


    Best regards
    Quek

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Stefan Keil
    Stefan Keil over 11 years ago

    Hi Quek,

    I dont use a SVRF rules file. I start the runs from GUI. Can you tell me how to implement such an SVRF file? 

    Best regards,
    Stefan 

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Quek
    Quek over 11 years ago

    Hi Stefan

    PVS can read in both SVRF rules file (Calibre deck) or its native PVL rules file. SVRF file simply refers to Calibre deck. Would you please try the following?

    a. Create an empty file named "addon.rul" and add the following lines in the file:

    lvs_blackbox FEED1LJI3V
    lvs_filter_device FEED1LJI3V -open

    b. Add the file "addon.rul" as one of the rules file in "Rules" tab.

    Best regards
    Quek

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Stefan Keil
    Stefan Keil over 11 years ago

    Hi Quek,

    sorry for my delay. The addon.rul works fine and all devices are filtered and I can get a clean run.

     Thx a lot,

    Stefan 

     

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Quek
    Quek over 11 years ago

    Hi Stefan

    That's great news. Thanks for the update.

    Best regards
    Quek

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel

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.

© 2025 Cadence Design Systems, Inc. All Rights Reserved.

  • Terms of Use
  • Privacy
  • Cookie Policy
  • US Trademarks
  • Do Not Sell or Share My Personal Information