Re: 320pin BGA Pin Layout suggestions

On Thu, 22 Mar 2007 09:08:07 +1100, Joe G (Home) wrote:

HIi Dave,

It's an NXP LPC3180

Data *** - in the back section it has the pin outs
http://www.standardics.nxp.com/products/lpc3000/pdf/lpc3180.pdf


That only answers half of the question - which ones do you plan to
actually _use_?

And please don't top-post:
http://www.caliburn.nl/topposting.html

Thanks,
Rich

"David L. Jones" <altzone@xxxxxxxxx> wrote in message
news:1174509391.141500.44770@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Mar 21, 11:18 pm, "Joe G \(Home\)" <j...@xxxxxxxxxxxxxxx> wrote:
Hi All,

Thanks for your replies.

I note comments between 4~8 layers (may be more to assist routing).

I would like people to comment on routing the 0.5mm BGA balls...

I hear routing between 0.5mm balls will be difficult, will all the
major ball signals have to pass through layers to give maxium ease to
the PCB routing?

Here's the correct link to the BGA320
package.http://tinyurl.com/2mpfaq

Thanks in advance

Joe

Joe, you still have to tell us what chip it is and how many of the pins
you are actually using, that is important detail and determines how you
will route your chip.

Dave.



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