[SI-LIST] Question for PCI wizards
- From: "Peterson, James F (EHCOE)" <james.f.peterson@xxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Wed, 18 Nov 2009 10:16:40 -0500
I noticed a light reply to my colleague post below, so I thought I'd
ping you all again.
We find this strange and we figure we're missing something. As strict as
PCI is in it's control of PCB design rules, we don't see any
documentation or spec that controls the PMC version of a PCI bus. (we've
looked at IEEE Std 1386.1)
Do you know of any PCB guidelines for the PCM variation of PCI?
Thanks,
Jim Peterson
Honeywell
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Ross, Craig (EHCOE)
Sent: Tuesday, November 17, 2009 2:57 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] PCI/PMC Signal Routing Question
I have a cPCI question regarding guidelines for the routing of cPCI
signals from a bridge device to a PMC connector on a cPCI/PCI host
module. For a standard cPCI module, there are rules regarding the length
of the signal traces from the bridge to the backplane connector (2.5"
total length) and that 10 ohm series "isolation resistors" be placed
within 0.6" of the backplane connector. Are there similar rules for the
cPCI signals routed from the bridge to the PMC connectors? I haven't
been able to find a reference in the PCI specification, cPCI
specification, or IEEE 1386 (PMC module specification) documents that I
have.
Thanks,
Craig Ross
Honeywell, Inc.
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