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Get schematic to layout bound stdcells for array

psill000

I can get the bound stdcells using bndGetBoundObjects, but not get what each individual stdcell corresponds in layout.

Is there a way to get the layout bound stdcells of an array schematic symbol if the layout stdcell name do or do not match the symbol naming?

Once the schematic array stdcells are bound to the layout stdcells, how to get the correct terminal term~>name and net~>name?

Example of a schematic symbol and layout stdcell:

Schematic

INV<0:2>    instTerms~>terms~>name = ("vss" "vdd" "A" "Y")

                   instTerms~>net~>name = ("<*3>vss" "<*3>vdd" "in<0:2>" "nand2A,nand3B,nor2B")

Layout ( I know it is bad practice, but it happens )

stdcell1 instTerms~>terms~>name = ("vss" "vdd" "A" "Y")

             instTerms~>net~>name = ("vss" "vdd" "in<0>" "nand2A")

I23        instTerms~>terms~>name = ("vss" "vdd" "A" "Y")

             instTerms~>net~>name = ("vss" "vdd" "in<1>" "nand3B")

INV(2) instTerms~>terms~>name = ("vss" "vdd" "A" "Y")

             instTerms~>net~>name = ("vss" "vdd" "in<2>" "nor2B")

Paul

Parents

  • Hi Paul,

    This should work:

    schInst=car(geGetSelSet())
    for(i 0 schInst~>numInst-1
      schName=dbGetMemName(schInst~>name i)
      boundLay=bndGetBoundObjects(list(list(schInst i)))
      layName=caaar(boundLay)~>name
      printf("Schematic %L corresponds to %L\n" schName layName)
    )

    which produces:

    Schematic "INV<0>" corresponds to "stdcell1"
    Schematic "INV<1>" corresponds to "I23"
    Schematic "INV<2>" corresponds to "INV(2)"

    I think you've answered your own question on how to get the terminal to net connections? For a given instance, you can do just:

    termNetList=foreach(mapcar instTerm inst~>instTerms list(instTerm~>name instTerm~>net~>name))

    which produces (for one of the layout instances):

    (("a" "in<2>")
    ("y" "nor2B")
    ("vdd" "vdd")
    ("vss" "vss")
    )

    Andrew

Reply

  • Hi Paul,

    This should work:

    schInst=car(geGetSelSet())
    for(i 0 schInst~>numInst-1
      schName=dbGetMemName(schInst~>name i)
      boundLay=bndGetBoundObjects(list(list(schInst i)))
      layName=caaar(boundLay)~>name
      printf("Schematic %L corresponds to %L\n" schName layName)
    )

    which produces:

    Schematic "INV<0>" corresponds to "stdcell1"
    Schematic "INV<1>" corresponds to "I23"
    Schematic "INV<2>" corresponds to "INV(2)"

    I think you've answered your own question on how to get the terminal to net connections? For a given instance, you can do just:

    termNetList=foreach(mapcar instTerm inst~>instTerms list(instTerm~>name instTerm~>net~>name))

    which produces (for one of the layout instances):

    (("a" "in<2>")
    ("y" "nor2B")
    ("vdd" "vdd")
    ("vss" "vss")
    )

    Andrew

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