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  2. Custom IC SKILL
  3. Regarding Manual Connections

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Regarding Manual Connections

Sattar72
Sattar72 over 9 years ago

Hi Everyone: In Top-Level I want to route manual connections between Pins. How can i do that? Can anybody Help me..

Thank you...

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  • skillUser
    skillUser over 9 years ago

    Your question is VERY vague. What tool are you talking about? What version? You don't even state if this is a schematic or layout (both can be considered to have top-levels and routes between pins). What kinds of pins, instance pins or ports into a cell or a mixture of both? You will need to supply more details if you expect anyone to have a chance of understanding what you are looking to do here.

    Regards,

    Lawrence.

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  • Sattar72
    Sattar72 over 9 years ago

    Hi lawrence: I am working on Layout. I am using 55 nm Technology and Cadence 6.1.6 Version.  In top-level i want to connect Instance pins(Input and output pins) between sub-blocks using skill code. Can any one help me.

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  • Andrew Beckett
    Andrew Beckett over 9 years ago

    Are you using Virtuoso Layout Suite XL? Do you have access to GXL? If so, why not use the router that's part of that rather than trying to write your own. Even with Virtuoso XL there is the ability to route a single wire at a time automatically.

    You still really haven't provided enough information...

    Regards,

    Andrew

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  • Sattar72
    Sattar72 over 9 years ago

    Hi: I am using virtuoso layout XL.  In Top-Level Can't we use automatic routing between Pins or ports of Sub-blocks in Virtuoso layout XL. I am new to Skill. I written just some codes.   

    Thanks & Regards

    ssattar

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  • Andrew Beckett
    Andrew Beckett over 9 years ago

    The full router requires GXL licenses. However, the wire editor (which allows you to use the router one net at a time) is available with just a VLS XL license. You can automate that using something like this:

    foreach(net '("inm" "inp" "outp" "outm" "hold" "bias1")
      geDeselectAll()
      hsmSelect(?type 'net ?name net)
      lxSelectedRoute(nil) ; if  you pass t instead of nil it will use the wire assistant overrides for the routing
    )

    This will route each net one at a time. Note that this is not a particularly good way of routing something, because each route is done in isolation, but it may be a convenient way of getting some kind of hook up.

    Regards,

    Andrew.

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