Re: [IBIS-Users] Hspice ibischk4 tool

Fabrizio:

The difference between ibischk4 Version 4.0.1 and ibischk4 Version 4.0.1
is BUG82. BUG82 was serious enough to justify a special release of
ibischk4.

   http://eda.org/pub/ibis/bugs/ibischk/index.html

A text list of what verion a bug fix has been implemented exists
in the bugdir.txt file link at the end of this link.

Bob

Zanella, Fabrizio wrote:

> The latest version of Synopsys Hspice, version 2004.09, uses the
> ibischk4 tool, version 4.0.1. In a simulation I ran yesterday, Hspice
> reported errors running the v4.0.1 ibischk4 with the rising and falling
> waveforms when using an IBIS model as a driver.
>
> Here’s a sample of the errors:
>
> ERROR - Model osoc2_od: The [Rising Waveform]
>
> with [R_fixture]=60 Ohms and [V_fixture]=3.3V
>
> has TYP column DC endpoints of 2.02V and 3.30v, but
>
> an equivalent load applied to the model's I-V tables yields
>
> different voltages ( 2.02V and 2.02V),
>
> a difference of inf% and inf%, respectively.
>
> ERROR - Model osoc2_od: The [Falling Waveform]
>
> with [R_fixture]=60 Ohms and [V_fixture]=3.3V
>
> has TYP column DC endpoints of 2.02V and 3.30v, but
>
> an equivalent load applied to the model's I-V tables yields
>
> different voltages ( 2.02V and 2.02V),
>
> a difference of inf% and inf%, respectively.
>
>
>
> An engineer at the device manufacturer said there are no errors when he
> uses the ibischk4 v4.0.2 tool. Can someone explain what the differences
> are between versions 4.0.1 and 4.0.2 of the ibischk4 tool and does
> anyone know whether Synopsys will be moving to the latest ibischk4 tool
> in the Hspice simulator?
>
> Thanks and regards,
>
>
>
> Fabrizio Zanella
>
> Signal Integrity
>
> Enterasys Networks
>
> Andover, MA
>
> Phone: 978-684-1340
>
> fzanella@enterasys.com <mailto:fzanella@enterasys.com>
>
>
>

-- 
Bob Ross
Teraspeed Consulting Group LLC     Teraspeed Labs
121 North River Drive              13610 SW Harness Lane
Narragansett, RI 02882             Beaverton, OR 97008
503-750-6481                       503-430-1065
http://www.teraspeed.com           503-246-8048 Direct
bob@teraspeed.com
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