Stats

  • State Suggested Answer
  • Replies 11
  • Answers 3
  • Subscribers 162
  • Views 8606
  • Members are here 0
More Content

Dangling Via Report

karthikeyank

HI,

i want to find out the dangling via location by using cadence skill program. Can anyone please help me out.

prog;

procedure(chk()
axlClearSelSet()
axlSetFindFilter(?enabled `("NOALL" "VIAS") ?onButtons `("VIAS"))
via_data = axlGetSelSet(axlAddSelectAll())
foreach(via_data_lp via_data
                     if(via_data_lp->unconnected then
                       print(via_data_lp->net->name)
                       print(via_data_lp->xy)
                      )
)
)

  • 0 in reply to karishma

    Try this:

    foreach(via, l_vias
    n = length(axlDBGetConnect(via))
    when(n < 2 ; Fewer than two clines are connected to a via
    viaPads = setof(pad, via ->pads, car(parseString(pad ->layer, "/")) == "ETCH" && pad ->type == "REGULAR")
    viaPadsInPlanes = setof(pad, viaPads, exists(shp, axlDBGetShapes(pad ->layer), shp ->net == via ->net && axlGeoPointInShape(via ->xy, shp)))
    n = n + length(viaPadsInPlanes)
    when(n < 2; Fewer than two clines or etch shapes are connected to a via
    pins = axlPinsOfNet(via ->net, 'pin)
    viaPads = setof(pad, viaPads, !member(pad, viaPadsInPlanes))
    viaPadsInPinPads = setof(viaPad, viaPads, exists(pin, pins, axlGeoPointInShape(via ->xy, car(axlPolyFromDB(pin, ?layer viaPad ->layer, ?padType "REGULAR")))))
    n = n + length(viaPadsInPinPads)
    when(n < 2; Fewer than two clines, etch shapes or pins are connected to a via
    printf("Found Via with one connection at %L on a net %L \n", via->xy, via->net->name)
    ;fprintf(repfile "Found Via with one connection at %L on a net %L \n", via->xy, via->net->name)
    )
    )
    );end when
    );end foreach

Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.