• 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 SKILL
  3. How to add a net between two instances in schematic.

Stats

  • Locked Locked
  • Replies 6
  • Subscribers 143
  • Views 9615
  • 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

How to add a net between two instances in schematic.

Sandeep Kailasa
Sandeep Kailasa over 2 years ago

I have the following queries , Could someone help me here as I am new to skill.

1.) I want to Add a net between 2 instances or cells. Will dbCreateNet() works here? . I had marked the instances in the below schematic.

2.) How can I add a floating net with one end connected to an instance and the other end is floating like shown below.

Thanks,

Sandeep

  • Cancel
Parents
  • Andrew Beckett
    Andrew Beckett over 2 years ago

    Sandeep,

    Normally you'd use schCreateWire() to create the physical wire, and then you can use schCheck() to extract connectivity and perform the schematic checks before saving with dbSave().

    Regards,

    Andrew

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Sandeep Kailasa
    Sandeep Kailasa over 2 years ago in reply to Andrew Beckett

    Thanks Andrew,

    I used the schCreateWire() to add the net but the net name(net10)  is not same as pin name(in1_level_0) here. Can I please know how to make the net name as pin name from skill function.

    Eg:

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Andrew Beckett
    Andrew Beckett over 2 years ago in reply to Sandeep Kailasa

    Two choices:

    1. Label the wire (as you'd do in the schematic editor to name the net) - using schCreateWireLabel
    2. Change the net name method on the schematic editor options to "derived":

      This can be controlled with envSetVal("schematic" "netNameMethod" 'cyclic  "derived") . Note that the naming then will be instName_pinName so not exactly what you want.

    Andrew

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
  • Sandeep Kailasa
    Sandeep Kailasa over 2 years ago in reply to Andrew Beckett

    Thanks a lot Andrew !

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
Reply
  • Sandeep Kailasa
    Sandeep Kailasa over 2 years ago in reply to Andrew Beckett

    Thanks a lot Andrew !

    • Cancel
    • Vote Up 0 Vote Down
    • Cancel
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.

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

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