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How to find the coordinates of an instance's PIN?

jyzxyz

Hello, I am using skill code (dbCreatePath) to route to an instance. Currently I just route to the center of one edge of the bounding box. The instance could have pin information for terminals like gate, source, drain, etc. It would be nice to route directly to that terminal, or at least to a specific location instead of just the center of the edge. But I couldn't find how to find the pin's coordinates. Is this possible?

Thank you very much for the great help.

  • procedure(CCFgetPinCoordinates(inst)
      foreach(mapcar instTerm inst~>instTerms
        list(instTerm~>name
          dbTransformPoint(centerBox(car(instTerm~>term~>pins)~>fig~>bBox) inst~>transform)
        )
      )
    )

  • in reply to Marben

    Marben,

    Thanks so much for the quick reply. Could you please elaborate on what would be the output format for this procedure? For example, there are three terminals "g" "s" "d" which have coordinates of list (1 1), list (0 0) and list (2 0) respectively?

  • in reply to jyzxyz

    Hi jyzxyz,

    The procedure's output is like this:

    inst = css()
    db:0x1af7fee7
    CCFgetPinCoordinates(inst)
    (("S"
    (-10.845 97.37)
    )
    ("G"
    (-13.085 100.48)
    )
    ("B"
    (-13.085 97.37)
    )
    ("D"
    (-15.325 97.37)
    )
    )

    Best regards,

    Marben

  • in reply to Marben

    Hi Marben,

    Just an observation here. Since a terminal can have more than one pin and so figure, would it be correct to wrap with one more foreach rather than "car(insterm~>term~>pins)?

    -Ramakrishnan

  • in reply to Marben

    Thanks, Marben,

    That was actually the output I was expecting. However, I seem to get nil as the output. The instance is a pcell. Maybe the pin was created incorrectly in the pcell.

  • in reply to jyzxyz

    that code above will only work if the instance was created in Layout-XL and has the connectivity info.  Otherwise instead of looking at ~>instTerms you may need to look at ~>master~>terminals.  Also be careful because a terminal may have multiple pins and a pin may have multiple figures.

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