• 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 "mirror" child instance cdsTerm() display to parent...

Stats

  • Locked Locked
  • Replies 0
  • Subscribers 143
  • Views 1258
  • 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 "mirror" child instance cdsTerm() display to parent instance?

Garrett Zhou
Garrett Zhou over 3 years ago

Situation:

Let's say if you build wrapper pcell, which containing several same instances of a foundry pcell.
For example: I build a resistor wrapper pcell, to realize series multi-link resistor configuration, since foundry PDK resistor does NOT provide series multi-link option.

Problem:

I figure out to build this pcell thanks the help of @andrew-bectett and patwardg, so that I can input w & l on wrapper pcell, the wrapper pcell instance schematic show foundry pcell in correct w & l, and also correct r.
But what I don't know is ...

How can I mirror the foundry resistor's cdsTerm() to the wrapper cell, so that ...
I can see the resistance annotate on the wrapper pcell Symbol, when instanciate this wrapper cell in my schematic, I don't need to descend into the wrapper pcell to check annotation on foundry cell.
The expected user experience is, the wrapper pcell looks just like the foundry resistor cell, by design default, cdsTerm() shows w & l & r, after simulation i & v can be back-anotated.

Many thanks. Regards.

Illustration shown below, which may help to understand the expected behavior.

Reference about how to build a wrapper pcell.
https://community.cadence.com/cadence_technology_forums/f/custom-ic-design/40177/changing-the-number-of-series-instances-in-a-schematic
https://community.cadence.com/cadence_technology_forums/f/custom-ic-skill/24835/how-to-pass-cdf-parameter-s-value-of-an-instance-in-schematic-pcell-to-cdf-parameter-of-schematic-pcell

  • 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