[IBIS] Re: [IBIS-Users] IBIS 4.1 parser errors vs. 3.2

Hi:

As you indicate, this is an unexpected difference.  We will
have to see the model or a stripped down version of it that still
has the problem to  see what the issue is.  You can send it
privately to me.  Also, what operating system parser are you
using?

If you change the [IBIS_Ver] to 3.2,  does the problem still
exist with the latest parser?

Bob

CW - Doran David wrote:

> Hello :
> 
> I just tried running my open-drain IBIS model using 
> latest 4.1 parser (just released), and found major errors
> like shown below.
> 
> However my model passed clean using version 3.2 and 4.0.2
> parsers.  Let me know if anyone else has similar errors 
> with 4.1 which were not flagged on previous parser, and 
> whether 4.1 is correct with these errors.  I'm just surprised
> that 4.0.2 and 3.2 passed the same model.
> 
> Thanks!
> 
> ------------- Begin Forwarded Message -------------
> IBISCHK4 V4.1.0
> 
> Checking drac_tc260_150.ibs for IBIS 4.1 Compatibility...
> 
> ERROR - Model DRAC_TC260: The [Falling Waveform] 
>       with [R_fixture]=34 Ohms and [V_fixture]=1.8V
>       has TYP column DC endpoints of  1.01V and  1.80v, but
>       an equivalent load applied to the model's I-V tables yields
>       different voltages ( 1.01V and  0.00V),
>       a difference of  0.01% and 178.36%, respectively.
> 
> 
> (this was clean with old Parser 3.2 and 4.0.2)
> 
> 
> ------------- End Forwarded Message -------------
> 
> 


-- 
Bob Ross
Teraspeed Consulting Group LLC     Teraspeed Labs
121 North River Drive              13610 SW Harness Lane
Narragansett, RI 02882             Beaverton, OR 97008
401-284-1827                       503-430-1065
http://www.teraspeed.com           503-246-8048 Direct
bob@teraspeed.com

Teraspeed is a registered service mark of Teraspeed Consulting Group LLC


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