Stats

  • Locked Locked
  • Replies 3
  • Subscribers 165
  • Views 14125
  • 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

Delay Tune does not work for inner signal layers in pcb Designer professional

Mingyuexin

Hi,

I'm using OrCAD pcb Designer professional version 17.2-2016 with Hotfix_SPB17.20.049. I tried to tune some traces to match them (data and control signals for a emmc, and I have already set the match group in constraint manager).

But it seems I can only tune traces on the top and bottom layers, not inner layers (I changed the options to inner signal after choose route->Delay tune. ) I'm wondering why I can not tune traces on the inner signal layers. Did I miss any setting, or is it a bug for version 17.2-2016?

By the way, I read that allegro 16.6 has Auto-interactive delay tune, but I did not find this option in pcb Designer professional version 17.2-2016, why?

Anybody knows about this, any reply is appreciate. Thank you in advance!

With best wishes

Mingyuexin

  • oldmouldy

    I guess anything could be possible but this does seem to be working fine for me, admittedly with hotfix 50, and I would have expected a common activity like Delay tuning to not have an issue.

    The Auto-Interactive Delay Tune, for "any" version, needs an Allegro High-Speed Option license added to an Allegro PCB Designer license which is why this isn't available in the OrCAD products.

  • Mingyuexin
    in reply to oldmouldy

    Hi oldmouldy,

    Thank you very much for the answer. I could not figure out why delay tune on the traces on the inner layer does not work for me.

    I will update to hotfix 50 and try again.

    Thank you again.

    Mingyuexin

  • Mingyuexin

    I figured out that it was the gap setting for delay tune. The default setting was 1 gap, and it worked fine for top, bottom layers, but the gap was too large for the inner signal layers, I do not know where to change the gap setting for the inner signal layer. Anyway, I have changed the gap to 3Xwidth,  it works for the inner layers now too.

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.