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Need help in Creating via at overlap of two metal layers

Bhawna1

Hi, 

I wanted to place via in overlap area of two metal layers. For that, I created a layer at overlap by using leLayerAnd function.

Created VIA array by calculating width length of the layer. I Need to do that for all the overlap layers present in the cell.

lFrom eLayerAnd function, I got a list of bBox of all overlap layers.

Now I want to repeat the function for all overlap layers. But dont know how to access that list of bBox.

Code I used is :

 

cv=geGetEditCellView()
OVERLAP_LIST=leLayerAnd(cv list("M1" "drawing") list("M2" "drawing") list("marker" "warning"))
OVERLAP_BBOX=OVERLAP_LIST~>bBox

BoxWidth=caadr(car(OVERLAP_BBOX))-caaar(OVERLAP_BBOX)
BoxHeight=car(cdadar(OVERLAP_BBOX))-cadaar(OVERLAP_BBOX)
COLUMNS=int(BoxWidth/0.142)
ROWS=int(BoxHeight/0.142)
dbCreateViaShapeArray(cv "V1" nil caaar(OVERLAP_BBOX)+0.017 cadaar(OVERLAP_BBOX)+0.017 0.142 0.142 0.05 0.05 ROWS COLUMNS)

This code is working for only one overlap layer. 

Can anybody help to repeat this for all metals.

Thanks

Bhawna

Parents

  • You need to get a little loopy to do this {8^)

    Code is not guaranteed to work.

    ;; Set up a list of layer pairs and via.

    layerList = list( list( list("M1" "drawing") list("M2"  "drawing") "V1") list(list("M2" "drawing") list("M3" "drawing" "V2) ... )

    cvId = geGetEditCellView()

    ;; Now loop through that list

    foreach( layerSet layerList
        overlapList = layerAnd( cv car(layerSet) cadr(layerSet) list("marker" "warning") )

    ;; Loop through the overlapList

        foreach( shape overlapList
            box = shape~>bBox

    BoxWidth= abs(xCoord(car(box)) - xCoord(cadr(box)))
    BoxHeight= abs(xCoord(car(box)) - xCoord(cadr(box)))
    COLUMNS=int(BoxWidth/0.142)
    ROWS=int(BoxHeight/0.142)
    dbCreateViaShapeArray(cv caddr(layerList) nil rodAddPoints( car(bBox) list(0.017 0.017) 0.142 0.142 0.05 0.05 ROWS COLUMNS)

        ) ;foreach shape

        geDeleteAllMarker(cvId)

    ) ; foreach layerSet

    You can put the overlaps and via size and spacing into the list as well if they are different for each via.

Reply

  • You need to get a little loopy to do this {8^)

    Code is not guaranteed to work.

    ;; Set up a list of layer pairs and via.

    layerList = list( list( list("M1" "drawing") list("M2"  "drawing") "V1") list(list("M2" "drawing") list("M3" "drawing" "V2) ... )

    cvId = geGetEditCellView()

    ;; Now loop through that list

    foreach( layerSet layerList
        overlapList = layerAnd( cv car(layerSet) cadr(layerSet) list("marker" "warning") )

    ;; Loop through the overlapList

        foreach( shape overlapList
            box = shape~>bBox

    BoxWidth= abs(xCoord(car(box)) - xCoord(cadr(box)))
    BoxHeight= abs(xCoord(car(box)) - xCoord(cadr(box)))
    COLUMNS=int(BoxWidth/0.142)
    ROWS=int(BoxHeight/0.142)
    dbCreateViaShapeArray(cv caddr(layerList) nil rodAddPoints( car(bBox) list(0.017 0.017) 0.142 0.142 0.05 0.05 ROWS COLUMNS)

        ) ;foreach shape

        geDeleteAllMarker(cvId)

    ) ; foreach layerSet

    You can put the overlaps and via size and spacing into the list as well if they are different for each via.

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