Ed Diego <e...@stevens8436.fslife.co.uk>
wrote:
: Hello,

: I need to design a PCI board.  I was thinking about using a Spartan2E to do
: all the hard work.  Would the I/O pins of the Sparan2E be able to connect
: straight to a PCI bus?
No, if you still need to cope with 5V signalling
: I'm thinking in terms of voltage levels.  Also,
: before the board is made I was planning on making a prototype using wire
: wrap board.  Is PCI or the Spartan2E particularly susceptible to noise
: problems?
It's susceptible.

Think about getting a prototyping card, e.g. the Memec card with the xc2s200

Bye
-- 
Uwe Bonnes                b...@elektron.ikp.physik.tu-darmstadt.de

Institut fuer Kernphysik  Schlossgartenstrasse 9  64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------

Ed Diego wrote:
> 
> Hello,
> 
> I need to design a PCI board.  I was thinking about using a Spartan2E to do
> all the hard work.  Would the I/O pins of the Sparan2E be able to connect
> straight to a PCI bus?  I'm thinking in terms of voltage levels.  Also,
> before the board is made I was planning on making a prototype using wire
> wrap board.  Is PCI or the Spartan2E particularly susceptible to noise
> problems?

If you read the PCI spec you will find that there are limits to the
length of the wires between the PCI connector and the part which drives
the IO.  I expect that using a wire wrap socket will make it hard to
meet that spec.  

If your PCI bus is the 5 volt version, the Spartan IIE is not spec'd to
drive that standard.  PCI has specific requirements on the IOs which a
chip must be rated to drive.  

-- 

Rick "rickman" Collins

r...@XYarius.com
Ignore the reply address. To email me use the above address with the XY
removed.

Arius - A Signal Processing Solutions Company
Specializing in DSP and FPGA design      URL http://www.arius.com
4 King Ave                               301-682-7772 Voice
Frederick, MD 21701-3110                 301-682-7666 FAX

Hello,

I need to design a PCI board.  I was thinking about using a Spartan2E to do
all the hard work.  Would the I/O pins of the Sparan2E be able to connect
straight to a PCI bus?  I'm thinking in terms of voltage levels.  Also,
before the board is made I was planning on making a prototype using wire
wrap board.  Is PCI or the Spartan2E particularly susceptible to noise
problems?

Thanks in advance,