Cadence IC Packaging and SiP Design Forum

Rotating blocks of pins

aCraig — Tue, 09 Apr 2013 17:00:27 GMT

I have added a die to a blank APD design using the text-in wizard. This die has similar functionality to a new design coming down the road. My plan was to take this die and move the functional blocks to different location on the die so I can do some early route feasibility. The problem is I can't figure out how to rotate a block of pins. Is this possible?

Thanks,

Craig

Die height in stacked die

design58 — Wed, 03 Apr 2013 20:41:30 GMT

Can someone show me how to set up the die thickness on a 2 dies stacked so that they will show up in 3D viewer with the correct thickness?

I am using 16.3 APD. thanks.

Merge shapes using axlShapeMerge

kwlee — Tue, 02 Apr 2013 08:49:33 GMT

Please give me anyone's advice...

1. Using below code, I expect only shapes in some layer can be picked in obj, but obj contains shapes in all layers. Is it normal??

  axlSetFindFilter(?enabled "shapes" ?onButtons "shapes")
  axlVisibleDesign(nil)
  axlVisibleLayer("some layer" t)
  axlSingleSelectBox()
  obj=axlGetSelSet()

2. Certain layer is filled with many of shapes, How can I merge each other.. I'd like to merge all shapes, if they are connected each other.

- I tried below code to do.. but it took too much time and not that successful.. since when I use 'axlShapeMerge(a b nil)', members of list b should be connected to a.. unless return error and skip this function...

allShapes = getAllshapes(some layer)
foreach(shape allShapes
  when(shape->bBox
   axlClearSelSet()
   axlSingleSelectBox(shape->bBox)
   slist=axlGetSelSet()
   foreach(s slist
     when(axlShapeMerge(shape s 'check) shape = axlShapeMerge(shape s 'quiet) )
    )
  )
)

How to connect traces of different nets?

clifton — Fri, 22 Feb 2013 03:01:59 GMT

Hi All

I need to connect traces of different nets, say net A & B at bottom layer, without DRC in SPB16.5.

Is there a property setting that I can use for this purpose? Or there is a waiver setting in CM?

Thank you in advance for the guidance.

Clifton

Can't open file after dbdoctor update from 14.x to 16.5

Doug Powell — Tue, 19 Feb 2013 16:43:12 GMT

I have to deal with older package designs from 14.x days that we used to do as .brd files. I have used dbdoctor (dbdoctor_ui.exe) to update one of the files to 16.5, and tried to use the BRD import option to bring it into APD (16.5). File failed to load with the error message: "ERROR(SPMHUT-43): File selected is not of type Layout." I get the same error when trying to open in Allegro PCB Designer (16.5) or Allegro Physical Viewer (16.5). Any ideas what the problem might be? Any workarounds other than finding an old set of install files for 14.x?

convert a .brd to a .mcm

VLSI88 — Wed, 13 Feb 2013 16:31:36 GMT

is there a way to convert a .brd to a mcm? Please help... thanks

IC Packaging Blog -- A wealth of information from the Cadence ICP team

BillAcito — Wed, 30 Jan 2013 04:18:34 GMT

Package Designers --

I'd like to point out (and provide the link to) the Cadence IC Packaging blog. Recent posts from the ICP team highlight how to take advantage of the new 16.6 features, as well as overviews of our existing capabilities, and how our customers are leveraging our tools to design packages in the context of the die and PCB, shortening their design cycle time in the process. Subscribe and get email notifications as we highlight more capabilities throughout 2013.

Regards,

Bill

16.6 Free Viewer is now available.

BillAcito — Wed, 30 Jan 2013 03:56:26 GMT

Located here: http://www.cadence.com/products/pcb/pages/Downloads.aspx

Bill

About interposer and spacer?

robin chu — Tue, 25 Dec 2012 06:57:19 GMT

when should i use interposer and spacer in sip？

thanks in advance!

Why is there a gate current in mosfets?

Abhimanyu1 — Wed, 09 Jan 2013 03:28:59 GMT

I am using p channel and n channel mosfets to design an amplifier...The pspice model editor has mentioned maximum possible gate current rating of 250 nA. But the gate current in my simulation is going as high as 5 mA...almost all of drain current. What could be the reason?