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How to calculate area for a given schematic

IC Layout

 Hello! Every body, I am using cadence IC514 version and a 90nm PDK kit called "gpdk090".
My intention is to calculate area for a given schematic.
I wrote a procedure called "area()" which will calculate area in the current level (means for transistors, capacitors and resistors only).
Now I need to call this procedure for every instance which is not a transistor,cap or a resistor.
I wrote something like this........................
foreach( inst geGetEditCellView()~>instances
    when( inst~>purpose == "cell"
        if( inst~>libName == "gpdk090" then
            area()
        else
            label:
            cv1=dbOpenCellViewByType(inst~>libName inst~>cellName "schematic")
            foreach( inst1 cv1~>instances
                when( inst1~>purpose == "cell"
                    if( inst1~>libName == "gpdk090" then
                        area()
                    else
                        goto label
        ]
Can some body guide me in this way...
                Thanks in Advance...    
                                                                Prabhakar. K

Parents

  •  No, I would like to draw rects in a layout window....

    I got part of solution....drawing rects for transisitors/caps/resistors  which are in top level....

    ***************************************************

      totalArea = 0u
      top = geGetEditCellView()~>cellName

       procedure( PKsumArea(@optional (cv geGetEditCellView()))
           foreach(inst cv~>instances
                   if(inst~>libName == "gpdk090" && cv~>cellName == top then
                   totalArea = totalArea + area(inst)
                   fig1=dbCreateRect(rv list("Metal1" "drawing") list(0:0 sqrt(atof(cdfFormatFloatString(artMakeString(area(inst)) "p"))):sqrt(atof(cdfFormatFloatString(artMakeString(area(inst)) "p")))))
                   ;where ' rv ' is a opend layout window
                   println(inst~>cellName)
                   else
                   if(inst~>libName == "gpdk090" && cv~>cellName != top then
                   totalArea = totalArea + area(inst)
                   else
                   when(inst~>purpose == "cell"
                   master = dbOpenCellViewByType(inst~>libName inst~>cellName "schematic")
                   ;;for this particular 'master' I need to get/print area separately
                   when(master
                   println(master~>cellName)
                   PKsumArea(master)
                   )
           )
    )
    )
    )
    totalArea
    )
    PKsumArea()
    println(totalArea)
    println(cdfFormatFloatString(artMakeString(totalArea) "p"))

    ******************************************************************

    ;;;You might be surprised why I again wrote the bad statement  atof(cdfFormatFloatString(artMakeString(area(inst)) "p")

    ;;;;But I find this is the way to draw rectangles
    ;;;;if I wrote like this "dbCreateRect(rv list("Metal1" "drawing") list(0:0 sqrt(area(inst)):sqrt(area(inst))))"
    ;;;;I am getting this error " *WARNING* Rectangle being created has no area "
    ;;;;Please notice this ....and let me know the right solution.......
    ;;;;One more thing is that I am not getting the area of individual blocks which are in toplevel schematic

    thanks & regards....

                               Prabhakar. K

     

Reply

  •  No, I would like to draw rects in a layout window....

    I got part of solution....drawing rects for transisitors/caps/resistors  which are in top level....

    ***************************************************

      totalArea = 0u
      top = geGetEditCellView()~>cellName

       procedure( PKsumArea(@optional (cv geGetEditCellView()))
           foreach(inst cv~>instances
                   if(inst~>libName == "gpdk090" && cv~>cellName == top then
                   totalArea = totalArea + area(inst)
                   fig1=dbCreateRect(rv list("Metal1" "drawing") list(0:0 sqrt(atof(cdfFormatFloatString(artMakeString(area(inst)) "p"))):sqrt(atof(cdfFormatFloatString(artMakeString(area(inst)) "p")))))
                   ;where ' rv ' is a opend layout window
                   println(inst~>cellName)
                   else
                   if(inst~>libName == "gpdk090" && cv~>cellName != top then
                   totalArea = totalArea + area(inst)
                   else
                   when(inst~>purpose == "cell"
                   master = dbOpenCellViewByType(inst~>libName inst~>cellName "schematic")
                   ;;for this particular 'master' I need to get/print area separately
                   when(master
                   println(master~>cellName)
                   PKsumArea(master)
                   )
           )
    )
    )
    )
    totalArea
    )
    PKsumArea()
    println(totalArea)
    println(cdfFormatFloatString(artMakeString(totalArea) "p"))

    ******************************************************************

    ;;;You might be surprised why I again wrote the bad statement  atof(cdfFormatFloatString(artMakeString(area(inst)) "p")

    ;;;;But I find this is the way to draw rectangles
    ;;;;if I wrote like this "dbCreateRect(rv list("Metal1" "drawing") list(0:0 sqrt(area(inst)):sqrt(area(inst))))"
    ;;;;I am getting this error " *WARNING* Rectangle being created has no area "
    ;;;;Please notice this ....and let me know the right solution.......
    ;;;;One more thing is that I am not getting the area of individual blocks which are in toplevel schematic

    thanks & regards....

                               Prabhakar. K

     

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