FW: [IBIS-Users] Creating 3 sets of R/F Waveforms

Subject: FW: [IBIS-Users] Creating 3 sets of R/F Waveforms
From: Ambrish Varma (akvarma@ncsu.edu)
Date: Mon Aug 18 2003 - 14:59:12 PDT

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Forwarding this to the group - for future reference.
-Ambrish.

Ambrish K Varma
akvarma@ncsu.edu
North Carolina State University
ph(919)513-2015, fax(919)515-2285

-----Original Message-----
From: Jose G Corona [mailto:jcorona@artisan.com]
Sent: Monday, August 18, 2003 5:16 PM
To: Ambrish Varma
Cc: 'Anil Kumar'
Subject: Re: [IBIS-Users] Creating 3 sets of R/F Waveforms

Thanks Ambrish,

You are correct we had a syntax error in our .s2i file but after getting
the following lines in the .s2i file everything worked:

[Rising waveform] 50 3.3 NA NA NA NA NA NA NA
[Falling waveform] 50 3.3 NA NA NA NA NA NA NA
[Rising waveform] 50 0 NA NA NA NA NA NA NA
[Falling waveform] 50 0 NA NA NA NA NA NA NA
[Rising waveform] 50 2.5 NA NA NA NA NA NA NA
[Falling waveform] 50 2.5 NA NA NA NA NA NA NA

Thank you for your quick response.

-Jose & Anil

Ambrish Varma wrote:

>Hi Jose,
>My understanding is that you can generate 100 R/F waveforms. I have
>tested the latest (s2ibis3 beta) to generate multiple R/F waveforms and
>I am pretty sure that s2ibis2 will also do the same.
>
>Would be glad to help you out if you gave me more specific details.
>-Ambrish.
>
>Ambrish K Varma
>akvarma@ncsu.edu
>ph(919)513-2015
>fax(919)515-2285
>
>-----Original Message-----
>From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On
>Behalf Of Jose G Corona
>Sent: Monday, August 18, 2003 2:38 PM
>To: ibis-users
>Subject: [IBIS-Users] Creating 3 sets of R/F Waveforms
>
>Hello IBIS-users,
>
>I am trying to generate ibis model for SSTL, this IO has termination
>resistor of 50 Ohm connected to VDD/2. While looking into many other
>ibis models from different providers, I have found that there are
>always
>two termination voltages (0 and VDD or 0 and VDD/2). I want to create
>an ibis model with three termination voltages "0, vdd/2 and vdd". But
>the tool (North Carolina Univ's tool) only generates the waveforms for
>the first two but not the third.
>Is it possible for UNC s2ibis2 to create 3 sets of R/F waveforms?
> Also, I am not sure whether it is ibis-complaint to have three
>termination voltage schemes?
>
>In the s2i tech file , I have using following lines
>-----------------------------------------------------
>rising_waveform1 = [Rising waveform] 50 0 NA NA NA NA NA NA NA
>falling_waveform1 = [Falling waveform] 50 0 NA NA NA NA NA NA NA
>rising_waveform2 = [Rising waveform] 50 1.25 NA NA NA NA NA NA NA
>falling_waveform2 = [Falling waveform] 50 1.25 NA NA NA NA NA NA NA
>
>rising_waveform3 = [Rising waveform] 50 2.5 NA NA NA NA NA NA NA
>falling_waveform3 = [Falling waveform] 50 2.5 NA NA NA NA NA NA NA
>----------------------------------------------------------
>
>Thanks for your precious time and I will really appreciate your
>response.
>
>-Jose
>
>
>

-- Jose G. Corona Analog/Mixed-Signal Business Unit ARTISAN COMPONENTS, INC. Tel: (858) 731-3428 Fax: (858) 457-5578

www.artisan.com

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Next message: Angulo, John: "RE: [IBIS-Users] time shifted edges"
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