[SI-LIST] Re: HSPICE - adding jitter to ethernet serial link
- From: "Pratt, Gary" <gary_pratt@xxxxxxxxxx>
- To: <si-list@xxxxxxxxxxxxx>
- Date: Tue, 14 Feb 2006 22:39:51 -0500
An IBIS 4.1/AMS model can generate a PRBS pattern with pretty much any
distribution.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Ed Sayre III
Sent: Tuesday, February 07, 2006 1:26 PM
To: aburney@xxxxxxxxxx
Cc: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: HSPICE - adding jitter to ethernet serial link
Hello,
I am not sure if the newest version of HSPICE allows for the
addition of random and deterministic jitter to a source. Your HSPICE
FAE should be able to help you with this. That being said, you can
prepare a source the old fashion way. That is by creating the pattern
0-1 transitions in a data stream (time, voltage) then using a PWL source
and a dependant source with gain you can set the levels. You should be
able to create the jitter in=20
this source fairly simply. The issue is that from run to run the
jitter=20
is always the same, in other words no random jitter.
Hope this helps.
Regards
-Ed
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NORTH EAST SYSTEMS ASSOCIATES, INC
-------------------------------------=20
"High Performance Engineering & Design"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr. Edward Sayre 3rd e-mail: esayre3@xxxxxxxx
NESA, Inc. http://www.nesa.com/
235 Littleton Rd, Unit 2 Tel +1.978.392-8787
Westford, MA 01886 USA Fax +1.978.392-8686
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
At 10:40 AM 2/7/2006 -0800, Ali Burney wrote:
>Hi,
>
>
>I am running gigabit Ethernet link simulation using HSPICE and have a=20
>question on adding jitter to the transmitted data. Is there any way to=20
>add Gaussian jitter to the transmitted data? I know that tools such as
>Hyperlynx allow you to add transmit jitter.
>
>
>
>Thanks and best regards,
>
>
>
>A Burney
>
>
>
>
>
>
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