[SI-LIST] Re: Tools to Create IBIS Models
- From: Bob Ross <bob@xxxxxxxxxxxxx>
- To: MikonCons@xxxxxxx
- Date: Sun, 21 Mar 2004 17:09:03 -0800
Hello Mike:
The IBIS Open Forum is very interested in the technical ideas you
mentioned related to algorithms for IBIS to SPICE conversion with
capacitance, simulation, suggested format improvements and accuracy
improvements.
You are invited to attend any meeting (teleconference or Summit)
to have a productive technical interchange.
The next IBIS Summit Meeting is on Monday, April 5 at DesignCon East.
Several people who cannot travel to DesignCon are teleconferencing
in their presentations. This is short notice, but you are welcome
to create a 10-20 page presentation and deliver it at this meeting.
We will need it before the meeting for uploading so other people
attending or off-site can view the material. Contact me directly
for more information, if you are interested.
See the link below to signup:
http://www.eigroup.org/ibis/events.htm
The IBIS Open Forum is open to critical analysis and to improvements,
as shown in some uploaded IBIS Summit material:
http://www.eda.org/pub/ibis/summits/
Bob
MikonCons@xxxxxxx wrote:
> Good comment, Andy. I totally agree.
> I presented one paper at DesignCon 2004 this year on the use of Laplacian
> based Coupled T-line models (in SPICE format) that was well received;
> however,
> another paper I submitted on converting IBIS model data to SPICE models was
> rejected. My conversion technique added dynamic conversion of driver output
> capcitance and receiver input capacitance as a function of the instantaneous
> T-line
> voltage, which is more accurate than the current IBIS model format. I also
> allowed coupled package leads and I/O intefaces to be easily incorporated
> into
> the model. Further, the conversion process identifies when a published IBIS
> model is deficient or inconsistent.
>
> I have had independent reviewers indicate the paper as a major step forward;
> however, I suspect the rejection was because there are many IBIS model (and
> EDA) vendors who financially support the conference that would have been
> displeased with the paper. That is, it was not "politically correct." I am
> considering submitting the paper to a magazine, but they have the same EDA
> vendor (paid
> advertising) barrier.
>
> If one can afford the time to run SPICE models, do it. If time-to-market is
> so critical that minutes or hours of schedule are detrimental, one may opt to
> take chances with IBIS models and cross their fingers. If a company chooses
> to
> publish IBIS models instead of SPICE models, they need to do a thorough and
> accurate job of it to gain respect. The option is to require a non-disclosure
> agreement for SPICE models instead.
>
> I haven't the time for another lengthy thread of comments, so I hope this
> note doesn't ruffle too many feathers.
>
> Mike
>
> Michael L. Conn
> Owner/Principal Consultant
> Mikon Consulting
> Cell: 408-821-9843
>
> *** Serving Your Needs with Technical Excellence ***
>
--
Bob Ross
Teraspeed Consulting Group LLC Teraspeed Consulting Group LLC
2926 SE Yamhill St. Device Modeling Division
Portland, OR 97214 13610 SW Harness Lane
503-239-5536 Beaverton, OR 97008
http://www.teraspeed.com 503-430-1065
bob@xxxxxxxxxxxxx 503-246-8048 Direct
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