[SI-LIST] Re: Dual stripline orthogonal design rule
- From: steve weir <weirsp@xxxxxxxxxx>
- To: jsteigel@xxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Tue, 02 Dec 2003 10:19:46 -0800
Jim,
If you are looking for simple rules, then use the same distance as your
lateral spacing. BTW, unless your planes are something like 15 mils from
the signal layers, ( generally a bad idea ), 50 mils seems like excessive
separation for like voltage swing aggressors and victims.
Regards,
Steve.
At 09:06 PM 12/2/2003 +0900, Jim Steigel wrote:
>I have a design that needs to route several 1Gbps links, each link has 12
>bits. The design rule that we have specified is 50mil spacing between
>links on the same and opposing dual strip line layers.
>
>The question comes when one link crosses another link orthogonally, what
>should the rule be for the distance from the crossing point to where the
>trace begins not being perpendicular?
>
>Regards,
>
>Jim
>
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