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AM335x - NFBGA 298 footprint cannot be exported

CF
Intellectual 300 points
Other Parts Discussed in Thread: AM3358, AM3352

Hi,

The footprint on the AM3358 NFBGA (ZCE) 298, does not export properly in Ultra Librarian.

Below is the error...

Message - Padstack "EX14.49Y14.49D0T" Shape(2) is a CIRCLE with no diameter.

Message - Padstack "EX14.49Y14.49D0T" Shape(3) is a SQUARE with no width.

Message - Padstack "EX14.49Y14.49D0T" Shape(4) is a CIRCLE with no diameter.

Error - Component AM3358_ZCE_298 is a 324 pin part referencing a 298 pin footprint ZCE298.

Component footprint mapping will be undone.

I am trying to start a design with the AM3352 and am guessing that this is the same pinout and footprint as the AM3358. 

Could you please let me know when the footprint has been updated?

Thanks,

Cris F.

  • 0
    TI__Guru**** 393215 points
    Hi Cris,
     
    All AM335X processors have identical footprints (ZCE or ZCZ) and pinout is also identical. Sorry, I can't help about the issue you report. You can find the package drawings in the AM335X Datasheet, Rev.F.
  • 0 in reply to Biser Gatchev-XID
    Intellectual 300 points

    Hi Biser,

    Thanks for getting back to me, glad to hear that all the AM335x have the same footprint. I already called TI  last week about the footprint and they said someone is working on it and will be ready shortly.

    I realize I can find the package drawings and pinouts on the datasheet but since this is my first time designing an ARM board there is a higher chance I'll make a mistake in the footprint or pinout. The 324 pin package works great but I don't need the extra pins and I think they will just get in the way of the routing. I'm hoping the person who designed the Ultra Librarian file will just take out the extra pins without much hassle and upload a new file.

    Cris

  • 0 in reply to CF
    TI__Guru**** 393215 points
    A couple of comments from me:
     
    The 324-pin ZCZ package is at 0.8mm pitch, no problem to route at all, with through-hole vias between pads.
    The 298-pin ZCE package is at 0.65mm pitch and has some reduced functionality compared to the ZCZ package (some interfaces are not exposed). There are some routing guidelines for this package type on the wiki, like this one: http://processors.wiki.ti.com/index.php/AM35x_VCA_PCB_layout.
  • 0 in reply to Biser Gatchev-XID
    Intellectual 300 points

    I'll give the 324pin a try, I suppose it's better than waiting.

    Thanks for the link, that is quite helpful.

    Regards,

    Cris