Subject: Re: [IBIS-Users] Creating 3 sets of R/F Waveforms
From: Syed Huq (shuq@cisco.com)
Date: Mon Aug 18 2003 - 12:22:17 PDT
According to ../doc/s2ibis2.txt, it says, you can generate 100 Rising and
100 Falling waveforms per model.
Do you get tables with no entries or what it simply does not generate a
table..
Syed
>Date: Mon, 18 Aug 2003 11:37:41 -0700
>From: Jose G Corona <jcorona@artisan.com>
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>To: ibis-users <ibis-users@eda.org>
>Subject: [IBIS-Users] Creating 3 sets of R/F Waveforms
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>
>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
>
>"Artisan: The IP Partner of Choice"
>
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>
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