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Powering up RIO PCI R7831 outside of computer

This is Noah Yang from TAMU taking ELEN405 this summer. We have tested the
brain. It seems working great with great speed of response. However, this
is done only when the RIO PCI board is hooked up in the PCI slot of the
computer.


We've done all kind of research from the link below and many others to
power up the RIO PCI board outside of the computer but never worked out.

http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=pinconbus_pci

We've connected to every single +5VDC(+3.3VDC) and ground or all at once
but never worked out, but works fine when it is hooked up in the computer
even without the any LabVIEW running as soon as the computer is turned
on.

This is important. As the demonstration day is coming up on Aug. 2 we need
to power up the brain outside of the computer. Now is the time we need an
reliable "explicit instruction" to power up outside the pc.

Thanks

Noah

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Hi Noah,

You should find on page 161 of the PCI specifications that information regarding required pull-ups for the control lines on a PCI board. I emailed this document to you earlier in the day, so you should find it without trouble.

Excerpt:

PCI control signals always require pull-up resistors (pulled up to Vcc of the signaling

environment) on the system board (not the add-in card) to ensure that they contain stable

values when no agent is actively driving the bus. This includes

FRAME#, TRDY#, IRDY#,

DEVSEL#

, STOP#, SERR#, PERR#, LOCK#, INTA#, INTB#, INTC#, INTD#, REQ64#,

and

ACK64#. The point-to-point and shared 32-bit signals do not require pull-ups; bus

parking ensures their stability. Refer to Section 3.8.1 for special requirements for

terminating

AD[63::32], C/BE[7::4]#, and PAR64. Refer to Section 4.3.7 for pull-up and

decoupling requirements for

PRSNT1# and PRSNT2#. Refer to Section 7.7.7 for pull-up

and decoupling requirements for

M66EN.

Cheers,

Matt Pollock
National Instruments
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