Re: BIRD 65.2

Please stop sending me emails. You have sent them to a wrong person. Regards,

Rachel Huang
----- Original Message -----
From: Muranyi, Arpad <arpad.muranyi@intel.com>
To: <ibis@eda.org>
Sent: Thursday, February 15, 2001 4:53 AM
Subject: RE: BIRD 65.2

> Tom,
>
> Al's response was correct that it is possible to have
> capacitance when there is no IV curve. For example,
> in ASIC cell technology the designer may use a
> complementary buffer in an open-source configuration,
> which basically 3-states half of the buffer for ever.
> In this case the IBIS model would not have an IV curve
> for the always off transistor, even though it may have
> capacitance.
>
> However, your real question in my mind is whether we
> should make all four C_comp values required. I spelled
> it out in the usage rules section that
>
> |*** If the C_comp subparameter is not present at least
> |*** one of the C_comp_pullup, C_comp_pulldown, C_comp_power, and
> |*** C_comp_gnd subparameters is required.
>
> It says "at least one of the ... subparameters is required".
>
> Does this answer your question?
>
> Arpad
> =======================================================
>
>
> -----Original Message-----
> From: Dagostino, Tom [mailto:tom_dagostino@mentorg.com]
> Sent: Wednesday, February 07, 2001 11:50 PM
> To: 'Al Davis'; ibis@eda.org
> Subject: RE: BIRD 65.2
>
>
> Re: required C_comp
>
> In stead of requiring all 4 values of C_comp (you don't need C_comp_pullup,
> etc with an open drain driver) require the appropriate C_comp for every IV
> table in the model.
>
> Tom Dagostino
> IBIS and Tau Modeling Manager
> SDD
> Mentor Graphics Corp.
> 503-685-1613
> tom_dagostino@mentor.com
>
 
Received on Wed Feb 14 16:57:52 2001