Re: 5V board in a 3.3V PCI slot

From: Amontec Team (laurent.gauch_at_amontecDELETEALLCAPS.com)
Date: 06/23/04 

Date: Wed, 23 Jun 2004 15:58:23 +0200
To: "marco p." <ikadabuchi@yahoo.it>

marco p. wrote:
> Hi,
> I have a problem with a Dialogic board "DM/IP301-1e1-PCI".
> I installed that board in a Piv 1.6Ghz Mainboard D845WN and I can't do
> it starts. The board's power requirements are 22.5W @ 5V, and using PC
> Wizard I see that the PCI slot used by the Dialogic board has this
> description: "In Use (32-bit) 3.3v".
> Is this a problem?
> Does the board fail to start by this reason?
> Can I make the board and the Mainboard compatible?
> thanks!
> Bye

I am almost sure you don't have any 3.3V on your PCI Slot.

We have designed over 10 different PCI cards for different custom
projects based on our komodo board.
On the first prototyping board we were using both 5V and 3.3V from the
PCI Slot. Now all our new PCI boards use only 5V. Why? just because a
large part of motherboards *DO NOT PROVIDE* 3.3V on the PCI slots.

See our Komodo picture to find where is B side (slot side) and A side
(http://www.amontec.com/komodo.shtml)

You can verify your 3.3V on PCI finger pin no
B-25 B- for B side
B-31
B-36
B-41
B-43
B-54
A-21 A- for A side
A_27
A-33
A-39
A-45
A-53

Just take time to measure the voltage on one of these point !!!

Laurent Gauch
www.amontec.com
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