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Setting up Buses

xmoix

Hi!

I'm using Allegro PCB Editor 16.2 and in one design I need to set up a series of nets as buses, because I need to route them together,

as close as I can.

 How can I do this?

Thanks en advance!

  • You would add the collection of nets (buses) to a special spacing rule set which would have a different spacing than the default nets. These could also be added to net classes and then your constraint could control net class to net class spacing. It's not a short writeup.
    There is some training on Sourcelink which discusses the Constraint Manager with CSets and the Physical/Spacing rule sets:

    http://sourcelink.cadence.com/docs/files/Training/spb160/pcb_cnsmgr/features/phys_spc.html

    In short:

    Add a spacing rule set
    Setup the constraints > Line to <element> etc.
    Add the net(s) into the spacing rule set

    If you need to control the "bus" to another "bus" or different routes you then need to look into Class >Class assignments.

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