[SI-LIST] Re: IEEE1394/Ethernet Routing Guidelines
- From: <Aubrey_Sparkman@xxxxxxxx>
- To: <wdowsley@xxxxxxxxx>, <voorhies@xxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Wed, 30 May 2007 16:00:08 -0500
Rand,
There are several good "get started" books. If you want one that is
strong on math, look for Brian Young. If you want one strong on "Rules
of Thumb" look for Eric Bogatin or Howard Johnson. Steven Hall also has
a pretty good book.
Other authors,
I didn't mean to slight you, these are the first that came to mind.
Aubrey Sparkman
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Bill Owsley
Sent: Wednesday, May 30, 2007 3:21 PM
To: voorhies@xxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: IEEE1394/Ethernet Routing Guidelines
Dear Student, (at least this one self declared)
Is your Dad named Rick?
The cost of an education is very dear to those of us gray before our
time due to the effort to find the answers to your question. However,
the information is available freely on the internet and other sources,
we put it there. And as you have already found, there is conflicting
opinions on what counts and how to implement it. As a masters student,
I expect one of your requirements is a demonstrated ability to use the
internal gray matter. A hint, apply AC circuits 101 and Intro to Fields
and Waves liberally to the conflicting information, mix throughly with
gray matter, rinse and repeat. Companies pay large sums of money to
consultants and engineers to provide just those answers. =20
=20
=20
Randolph Voorhies <voorhies@xxxxxxx> wrote:
Hi Everyone,
I'm brand new not just to this list, but to the world of PCB production
in general. I'm currently a masters student at USC in robotics and have
been producing some relatively simple PCBs for the past few months using
Eagle. I'm now working on a fairly complex project that involves
creating a custom baseboard for an XTX module (xtx-standard.org). My
formal training is in digital electronics, computer architecture, and
computer science, so when it comes to signal integrity I'm pretty much
at a loss. Does anyone know where to find specific routing guidlines for
differential pair lines such as firewire and ethernet? I have read all
sorts of conflicting advice (differential impedence is crucial vs.
differential impedence couldn't matter less, etc..), and have had a very
difficult time finding exact numbers for trace spacing/individual trace
impedence and so on. If anyone with experience has any advice that has
worked for them it would be very very very much appreciated.
Thanks so much,
Rand Voorhies
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