Stats

  • Locked Locked
  • Replies 2
  • Subscribers 163
  • Views 14253
  • Members are here 0
More Content
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

Xtalk simulation

tltoth

Hi,

Is there a way to extract coupled traces into Sigxp directly in OrCAD PCB Designer Professional or OrCAD PCB SI?
I've set up Geometry Window, Min Coupled Length, Cutoff frq, but the extracted topology is always just a single line one.

Thanks

  • Psi_V

    It is not possible to extract coupled traces from PCB SI to SigXp. It does only the single net extraction. 

    Alternately, you can do a board level crosstalk simulations by using the Probe functionality, which opens up the Signal Analysis features. You can select the nets that you want for xtalk and open up the Reports or Waveform generation. Both Reports and Waveform has the segment xtalk, summary and detailed xtalk that you can perform.  I assume you are aware of it. 

    If you still insist on getting a block extraction for selected signals into SigXp, you can do it with some effort. After your board level xtalk simulations are done, you can go into the signoise folder, and find the simulation folder. Look for the interconn.spc file, which is the spice extracted file for the selected nets.  This spice file can be converted to generic spice. Once the generic spice is obtained, the spice block can be wrapped into dml and placed into SigXp. 

    This entire process needs few additional commands and functions.  It might be better to get more information from the support team at cadence.

    Newer implementation of crosstalk simulations are available both in the Allegro Sigrity SI as well in the Sigrity based toolsets

  • tltoth
    in reply to Psi_V

    Thanks Psi_V.

    I'm using the aforementioned dml black box method which is good, but a bit uneasy to build the dml file each time you modify your routing.
    This could have been easily automated into the topology extractor anyway.
    Do you have experience in comparing the result of this method to those using a coupled trace model part?

Cadence Guidelines

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.