Stats

  • Locked Locked
  • Replies 1
  • Subscribers 143
  • Views 5792
  • 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

Angle issue during DRC check

Upendra Ch

I am designing an on chip spiral Inductor by using SKILL IDE. During DRC checks, following errors as shown:

Since my inductor have multiple segments with multiple different coordinate so they are not always at 45 or 90 degree. therefore please clarify that whether this error can be neglected for fabrication or we have to resolved it then how we can?

-Thanks

Upendra

Parents

  • Hello,

    of course you need to discuss this with your foundry, but the DRC errors exists because non-ortho45 shapes might gate the tapeout and/or mask data preparation. Assuming that the DRC rules are coded properly you should be able to easily comply with them. Do a simple testcase for a shape that you are sure that is ortho45 to check the rules:

    dbCreatePolygon(deGetCellView() "M1" list(0:0 1:0 2:1 2:2 1:3 0:3 -1:2 -1:1))

    If you don't see the errors for such a shape then you just need to work-out your math and ensure that your inductor has indeed 45 degree angles.


    Regards,

    Petar

Reply

  • Hello,

    of course you need to discuss this with your foundry, but the DRC errors exists because non-ortho45 shapes might gate the tapeout and/or mask data preparation. Assuming that the DRC rules are coded properly you should be able to easily comply with them. Do a simple testcase for a shape that you are sure that is ortho45 to check the rules:

    dbCreatePolygon(deGetCellView() "M1" list(0:0 1:0 2:1 2:2 1:3 0:3 -1:2 -1:1))

    If you don't see the errors for such a shape then you just need to work-out your math and ensure that your inductor has indeed 45 degree angles.


    Regards,

    Petar

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.