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  3. Bus routing in Allegro PCB Designer

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Bus routing in Allegro PCB Designer

dontknowwhy
dontknowwhy over 6 years ago

Hello, i am a student studying allegro pcb designer.

I have trouble in routing a bus. I think all of channels in a "bus" must have same( or very similar) characteristics so that they must be routed in a same topology (very close paths).

I just realized the way how to make a bus and add channels in the bus. However, i can't route them together simultaneously. 

I want to know the exact meaning of "bus" and how to route a bus simultaneously. 

Thank you for reading a long boring question, and i am waiting for a valuable answer.

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Top Replies

  • AvengerThanos
    AvengerThanos over 6 years ago +1
    BUS is a collection of nets. Cadence PCB tools have made PCB routing very easy over the years. select the group of nets - add connect and you can route them (it is called group routing)
  • RFinley
    RFinley over 6 years ago +1
    The drawback of routing a bus together is an increase in capacitive noise coupling between adjacent nets if your net-to-net clearance is too small. But, it is also important to avoid unnecessary via transitions…
  • RFinley
    RFinley over 6 years ago in reply to dontknowwhy +1
    When you launch Allegro, which license options do you see? I work for a company that focuses on RF boards. I can't justify the cost of the AIDT option when we don't use DDR or PCI-E parts. https://www…
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  • AvengerThanos
    AvengerThanos over 6 years ago

    BUS is a collection of nets. Cadence PCB tools have made PCB routing very easy over the years. select the group of nets - add connect and you can route them (it is called group routing)

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  • AvengerThanos
    AvengerThanos over 6 years ago

    BUS is a collection of nets. Cadence PCB tools have made PCB routing very easy over the years. select the group of nets - add connect and you can route them (it is called group routing)

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  • dontknowwhy
    dontknowwhy over 6 years ago in reply to AvengerThanos

    Oh, thanks for reply. It is useful for me.

    On the other hand, does "bus" mean just a collection of nets? Just selecting the group of nets and connect them with function "add connect" has nothing to do with "bus".

    I want to know if there are more functions that can be done with "bus".

    Thanks a lot again and i will be waiting for reply.

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