Hi Matthew,

You don't say whether your design belongs to the "high speed" or "low speed"
category.
One of the application notes on the Merix website deals with this issue.
If high speed, then  "signal integrity" rules apply. Some of the
well-meaning suggestions you received could lead you straight to a signal
integrity disaster, resulting in a board with excessive crosstalk, large
overshoots, noisy power rails, high EMI and other problems too numerous to
mention.

Matthias' message summarized very neatly many of the general rules which
will take you toward a reliable design. Another good reference is
http://www.ednmag.com/reg/2000/03162000/06ms603.htm, a nice summary of
signal integrity rules. (You will be asked to register to view this
article).

-George
George Harris
Tel: 508-467-8893
[log in to unmask]
COMPAQ Computer Corporation



-----Original Message-----
From: Matthew Lamkin
[mailto:[log in to unmask]]
Sent: Tuesday, March 13, 2001 11:54 AM
To: [log in to unmask]
Subject: Re: [DC] Tips wanted for my first multilayer board? superb
docume nts


Hi there again Senthil,
Looks like more are asking for this wallchart - even without seeing it....

I found even more at your website of www.merix.com in the resources section.
I can be sure that I will be downloading quite a bit in the morning.

Again many thanks - Matthew.

> -----Original Message-----
> From: [log in to unmask] [SMTP:[log in to unmask]]
> Sent: Tuesday, March 13, 2001 10:24 PM
> To:   Matthew Lamkin
> Subject:      RE: [DC] Tips wanted for my first multilayer board?
>
> I think, I got a request from her and sent it already. In any case, feel
> free to share all info I have sent.
> some more docs.....
>  <<012-PCBDesProces.pdf>>  <<Calc-imp-formula.pdf>>  <<TestPoints.pdf>>
> <<024-RFI-EMI-concrns.pdf>>  <<028-HS-Trace-how.pdf>>  <<chklist.pdf>>
>
> Happy reading ;-)
>
> Senthil
>

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