[SI-LIST] Re: Cross-talk, which one is bigger?
- From: "Ched-Chang Chai" <ched_chang@xxxxxxxxxxx>
- To: zhenhua@xxxxxxxxxxxxxxxxxx, si-list@xxxxxxxxxxxxx
- Date: Fri, 17 May 2002 09:10:10 +0800
Hi Fan,
(1)You can use the Crosstalk Calculator provided by UltraCAD.
(2)Assuming both data and address signals have the same rise/fall times,
I believe crosstalk caused by the adjacent signal trace will be larger than
that of between two layers, since the distance between adjacent traces is
smaller.
--
Regards,
Chai
>From: "Zhenhua Fan" <zhenhua@xxxxxxxxxxxxxxxxxx>
>Reply-To: zhenhua@xxxxxxxxxxxxxxxxxx
>To: si-list@xxxxxxxxxxxxx
>Subject: [SI-LIST] Cross-talk, which one is bigger?
>Date: Thu, 16 May 2002 15:42:20 -0400
>
>Hi all,
>
>I have a stackup list this,
>
> ---------------- Primary side
> ---------- Gnd
> --------------- Signal 1
> --------------- Signal 2
> -------- Power
> -------------- Signal 3 data bus, 5mil trace, edge-to-edge
>space is 7mil
> -------------- Signal 4 address bus, 5mil trace,
>edge-to-edge space is 7mil. Space between signal 3 and 4 is 10mil
> -------- Power
> -------------- Signal 5
> -------------- Signal 6
> -------- Gnd
> -------------- Secondary side
>There is a data bus group on signal 3 and a address bus on signal 4, and
>unfortunately they're in parallel (not in 90 degree due to room restrict).
>Here comes my two question:
> 1) How to calculate the cross-talk caused from address to the data bus?
> 2) Comparing the cross-talk from address bus and the adjacent data bus,
>which one is bigger?
>
>Thanks in advance,
>
>Zhenhua Fan
>
>
>
>
>
>
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