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Match Track Lengths Across Multiple Layers

PS202410214615

Hi everyone,

I’m working with Allegro X Editor 2023 and need help matching the track lengths for a few nets. These nets span across three different layers, and simply matching the total track length is not sufficient. I want to ensure that the signal timing is controlled across all layers, so I need to match the track length on each layer individually.

I've tried using the "Total Length" and "Relative Propagation Delay Length" features, but these methods are not giving the desired results, as they take the entire length into account rather than each individual layer.

Can anyone guide me on how to achieve this?

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  • 0

    Hi !

    you can refer this code.

    ;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    view = nil
    axlCmdRegister("total_length_net" `total_length_net)
    (defun total_length_net ()
    axlClearSelSet()
    axlSetFindFilter(?enabled '(noall NETS) ?onButtons '(noall ALL))
    mypopup = axlUIPopupDefine(nil (list (list "Done" 'axlFinishEnterFun) (list "Cancel" 'axlCancelEnterFun)))
    axlUIPopupSet( mypopup)
    while(axlSelect(?prompt "Please select an element...")
    STT =0
    if(view != nil then axlUIWClose(view))
    Input_List = axlGetSelSet()
    axlClearSelSet()
    Out_File = outfile("./total_length_net.log" "w")
    foreach(net Input_List
    pins = axlPinsOfNet(net 'pin)
    STT++
    if(length(pins) == 2 then
    parent = car(pins)->parent
    fprintf(Out_File "%-5d %s.%s %s.%s %-10s\n" STT parent->refdes car(pins)->number parent->refdes cadr(pins)->number net->name)
    path = axlFindPath(car(pins) cadr(pins))
    foreach(item path
    if(item->objType == "path" then
    fprintf(Out_File "\t%-10s %-10.2f\n" cadr(parseString(item->layer "/")) axlDBGetLength(item))
    )

    )

    )
    )
    close(Out_File)
    printf("Total: %n Found\n" STT)
    view= axlUIViewFileCreate("total_length_net.log", " " nil)
    )
    )

    Best Regards.

    HoangKhoi .

Reply
  • 0

    Hi !

    you can refer this code.

    ;+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
    view = nil
    axlCmdRegister("total_length_net" `total_length_net)
    (defun total_length_net ()
    axlClearSelSet()
    axlSetFindFilter(?enabled '(noall NETS) ?onButtons '(noall ALL))
    mypopup = axlUIPopupDefine(nil (list (list "Done" 'axlFinishEnterFun) (list "Cancel" 'axlCancelEnterFun)))
    axlUIPopupSet( mypopup)
    while(axlSelect(?prompt "Please select an element...")
    STT =0
    if(view != nil then axlUIWClose(view))
    Input_List = axlGetSelSet()
    axlClearSelSet()
    Out_File = outfile("./total_length_net.log" "w")
    foreach(net Input_List
    pins = axlPinsOfNet(net 'pin)
    STT++
    if(length(pins) == 2 then
    parent = car(pins)->parent
    fprintf(Out_File "%-5d %s.%s %s.%s %-10s\n" STT parent->refdes car(pins)->number parent->refdes cadr(pins)->number net->name)
    path = axlFindPath(car(pins) cadr(pins))
    foreach(item path
    if(item->objType == "path" then
    fprintf(Out_File "\t%-10s %-10.2f\n" cadr(parseString(item->layer "/")) axlDBGetLength(item))
    )

    )

    )
    )
    close(Out_File)
    printf("Total: %n Found\n" STT)
    view= axlUIViewFileCreate("total_length_net.log", " " nil)
    )
    )

    Best Regards.

    HoangKhoi .

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