Re: Question on Ramp

Milan,

s2ibis2 will add 50Ohms pullup and pulldown to calculate
dV/dt_f and dV/dt_r values. You can try changing these values
to see if your device will switch or not.

...in your .s2i file:

[Rising waveform] 500 0 NA NA NA NA NA NA NA
[Falling waveform] 500 3.3 NA NA NA NA NA NA NA

Try changing the sim time to a larger number too in your .s2i file

[sim time] 10ns

Regards,
Syed
National Semiconductor Corp.

> From owner-ibis@server.vhdl.org Mon Jun 16 17:27:09 1997
> Date: Mon, 16 Jun 1997 15:51:23 -0700 (PDT)
> From: Milan Gandhi <milan@indusinc.com>
> To: ibis-users@vhdl.org
> Subject: Question on Ramp
> X-Sun-Charset: US-ASCII
>
> Hi,
> This is our first experience with IBIS, so this might
> be a trivial issue for you experienced folks !!
>
> We are getting Ramp (dV/dt) as 0 in ibis inspite of
> providing required Voltage values.
> What should we be looking for in order to get
> correct Ramp values in Ibis model.
> We are using tools from NC university.
>
> -Thanks, Milan
>
 
Received on Tue Jun 17 08:34:48 1997