Prev: Need a few Xilinx Spartan FPGAs
Next: FPGA Verilog state machine lock up
From: Alan Nishioka on 22 Apr 2008 15:11
Xilinx is canceling the Virtex-E XCV1000E-FG860.

We are currently shipping a product that uses 13 of these chips on 4
different boards.

Does anyone have any ideas on how to deal with this?

One possibility is to rev the boards to use the XCV1000E-FG900, making
minimal changes to the boards around the fpga.

Complete re-design of the boards for this old system is out of the
question. Stockpiling a bunch of parts won't work because we don't know
what future quantities will be and the parts are very expensive.

Alan Nishioka
alan(a)nishioka.com
From: austin on 22 Apr 2008 16:57


Alan,

What is your present volume?

Austin
From: Symon on 23 Apr 2008 10:31
Alan Nishioka wrote:
> Xilinx is canceling the Virtex-E XCV1000E-FG860.
>
> We are currently shipping a product that uses 13 of these chips on 4
> different boards.
>
> Does anyone have any ideas on how to deal with this?
>
> One possibility is to rev the boards to use the XCV1000E-FG900, making
> minimal changes to the boards around the fpga.
>
> Complete re-design of the boards for this old system is out of the
> question. Stockpiling a bunch of parts won't work because we don't
> know what future quantities will be and the parts are very expensive.
>
> Alan Nishioka
> alan(a)nishioka.com

Hi Alan,
Maybe an interposer would work? Mount the FG900 on that, mount the
interposer on your board? Somethign like this...
http://advanced.com/pdf/AIC_BGA_Interposer_DataSheet_revJun07.pdf
HTH., Syms.


From: Alan Nishioka on 23 Apr 2008 12:00
austin wrote:
> What is your present volume?

It is only about 10 Xilinx parts per month. But the parts started out
at $1000 each, so it adds up.

Alan Nishioka
From: austin on 23 Apr 2008 12:31
Alan,

I think the interposer suggestion is really the best one.

With the small volume, re-design of the pcb is just not going to be
worth the money spent (you will never recover it), where the interposer
is a fixed cost, and a known set of issues, and although "clunky" does
work...

The reality is that Xilinx does everything it can to NOT obsolete
anything that is making money (or even breaking even), but we do have to
look at what is NOT selling, and make some hard decisions from time to
time. I do apologize: there is no way I can tell you what will be a
top seller, and what will not be a top seller (part, package, or otherwise)!

I can say that I would always look carefully at the package/part/family
roadmap, and choose a part that has both up, and down, resource/pins, in
the chart. Now that all V5 family members have identical pinouts (can
move from LX to LXT, to SXT, to FXT, in any package without relayout*),
I think things should get easier (at least that is what our customers
are telling us).


Austin

*If you plan for it. For example, if you go from LXT to FXT, you do
need to change one supply for the gigabit transceivers from 1.2 to 1.0
volts, but the pins are still the same pins.

Alan Nishioka wrote:
> austin wrote:
>> What is your present volume?
>
> It is only about 10 Xilinx parts per month. But the parts started out
> at $1000 each, so it adds up.
>
> Alan Nishioka
 |  Next  |  Last
Pages: 1 2 3
Prev: Need a few Xilinx Spartan FPGAs
Next: FPGA Verilog state machine lock up