[SI-LIST] Re: PRBS Data Pattern.]
- From: "Dima Smolyansky" <Dima.Smolyansky@xxxxxxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Wed, 13 Oct 2004 04:57:04 -0700
Simba,
Our IConnect TDR and VNA software does exactly what you are asking for:
generates eye diagrams from TDR/T or S-parameter data, and fast. No
simulations necessary. The release 3.1 (read our press release, released
today, at www.tdasystems.com) even allows you to place an eye mask and do
jitter and eye opening measurements.
Thanks,
===================
Dima Smolyansky
TDA Systems, Inc.
4000 Kruse Way Place
Bldg. 2, Suite 300
Lake Oswego, OR 97035
(503) 246-2272
(503) 246-2282 (fax)
TDA's MeasureXtractor is the EDN Product of the Year Finalist!
http://www.tdasystems.com/products/measurextractor.shtml
> -------- Original Message --------
> Subject: [SI-LIST] PRBS Data Pattern.
> Date: Tue, 12 Oct 2004 09:25:37 -0400
> From: "julian, simba" <sjulian@xxxxxxx>
> Reply-To: sjulian@xxxxxxx
> To: "'si-list@xxxxxxxxxxxxx'" <si-list@xxxxxxxxxxxxx>
>
> Greetings fellow SI engineers,
>
> For high speed analysis of serial links, my understanding is that you
> would
> want to use a data pattern that would excite and replicate different ISI
> effects in simulation. Before lengthening my simulation time, or turning
> to
> mathematical solutions in MATLAB(or similar products), or new techniques
> such as Channel Analysis that I'm sure the list is aware of by now, I
> would
> like to know if there are any techniques that you use to define a
> channel/topology specific stimulus to exacerbate the majority of these ISI
> effects so that the inner and outer most contours of the eye would be
> defined even within a relatively short(or reasonable) simulation time.
>
> Specifically if you use 8b/10b encoding there is a limit on the number of
> 1s
> or 0s that your stimulus should have. Outside of that, is there a
> relation
> between channel length to Bit pattern length? Or channel length to max
> number of 1s/0s? Or bit width to pattern relationship? How about running a
> TDR type simulation on the actual channel.... is there any useful data
> from
> the results as it relates to derivation of an exhaustive data pattern? I
> know I'm fishing here but my gut tells me that there must be some type of
> methodology or relation that exists instead of just using this "PRBS"
> pattern that I have sitting in a file for use in all serial simulation
> cases.
>
> Thanks,
> Simba
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>
>
>
> --
> -------------------------------------------
> Steven D. Corey, Ph.D.
> Time Domain Analysis Systems, Inc.
> "The Interconnect Analysis Company."
> http://www.tdasystems.com
>
> email: steven.corey@xxxxxxxxxxxxxx
> phone: (503) 246-2272
> fax: (503) 246-2282
> -------------------------------------------
>
>
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