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replacing flatten contacts/vias with mosaic

avinash1skill

My layout design is completely flatten, now to align with new Dk contact spacing rules i have to search for the cluster of contacts in the design and want to replace it with array so that i can resize them. I have written code to create/resize mosaic but struggling to get the bBox cordinates of the cluster of flatten contact/vias.

 I want to find similar pattern (like finding near by vias/contact) of layers within given area/distance.

PLZ help....

Thanks

  • Hi avinash

    I have not tried this out but perhaps it would work:
    a. Use leLayerAnd to find all interconnect overlaps (e.g. M1 and M2)
    b. Using the bbox of the shapes returned by leLayerAnd, use dbGetOverlaps for via layer
    c. Now that you have the IDs of all the individual vias, use dbDeleteObject to remove them
    d. Use a "case" switching to place a via array based on bbox of the shapes obtained in step "a"
    e. Delete all the shapes obtained in step "a"

    Hope that I have understood your question correctly. : )

    Best regards
    Quek

  • Hi Quek, thanks for ur reply. You have understood my question very well. But i am still not clear with the solution, can you give me an example?? Thanks, Avinash

  • Something like this would do. 

     

     

          m2m3And_l = leLayerAnd( deGetCellView( )

                                                  list( "METAL2" "drawing" )

                                                  list( "METAL3" "drawing" )

                                                  list( "y3" "drawing" )

                                );;
       via23_spacing = 0.36
    v23met_enclose = 0.09
            vi23_width = 0.36
    ;;; sized_m2m3And_l = dbLayerSize( deGetCellView() list( "y4" "drawing" ) m2m3And_l via23_spacing )

    foreach( y3box m2m3And_l~>bBox
        when( via23_l = dbGetOverlaps( deGetCellView() y3box list( "VIA23" "drawing" )  )
            mapcar( 'dbDeleteObject via23_l )
            urx = xCoord( upperRight( y3box ))
            ury = yCoord( upperRight( y3box ))
            llx = xCoord(  lowerLeft( y3box ))
            lly = yCoord(  lowerLeft( y3box ))
            rows = round( ( ( urx - llx ) - ( 2 * v23met_enclose ) ) / ( vi23_width + via23_spacing ) )
            cols = round( ( ( ury - lly ) - ( 2 * v23met_enclose ) ) / ( vi23_width + via23_spacing ) )
            dbCreateSimpleMosaicByMasterName(
                                            deGetCellView()
                                             "someViaLibrary"
                                             "via2"
                                             "symbolic"
                                            nil
                                            list( llx+v23met_enclose lly+v23met_enclose ) ;adjust this depending on via origin.
                                            "R0"
                                            rows
                                            cols
                                            via23_spacing+vi23_width
                                            via23_spacing+vi23_width
            )                                
        );when
    )

    mapcar( 'dbDeleteObject m2m3And_l )

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