IBIS - EIA IBIS Open Forum Activity: RE: [IBIS] problem with the

From: Vivek Kumar Sundriyal <Vivek.Kumar.Sundriyal@nsc.com>
Date: Tue Dec 21 2004 - 21:41:28 PST

Hi,

Thx to all the replies.

Tom,
Is it right to create a model for a pin for which i do not want the IBIS
model ?

As of now i have commented out those pins in the [Pin mapping] section
from the .ibs file. Hope this will not creat any problems further.

any comments ?

-- Vivek

                      "Tom Dagostino"
                      <tom@teraspeed.co To: lgreen <lgreen22@mindspring.com>, "'Vivek Kumar
                      m> Sundriyal'" <Vivek.Kumar.Sundriyal@nsc.com>, ibis@eda.org,
                                                owner-ibis@eda.org
                      12/21/04 10:42 PM cc:
                      Please respond to Subject: RE: [IBIS] problem with the pin mapping
                      tom

Make a model for dummy

Tom Dagostino
Teraspeed Consulting Group LLC
503-430-1065
tom@teraspeed.com
www.teraspeed.com

-----Original Message-----
From: owner-ibis@eda.org [mailto:owner-ibis@eda.org]On Behalf Of lgreen
Sent: Tuesday, December 21, 2004 8:12 AM
To: 'Vivek Kumar Sundriyal'; ibis@eda.org; owner-ibis@eda.org
Subject: RE: [IBIS] problem with the pin mapping

Hello, Vivek,

1) Pins 2 and 3 are commented out under the [Pin] keyword.
2) Since the pins are not defined under [Pin], they cannot be used with
later keywords, such as [Pin Mapping].

Besr regards,
Lynne

-----Original Message-----
From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Vivek
Kumar Sundriyal
Sent: Tuesday, December 21, 2004 3:00 AM
To: ibis@eda.org; owner-ibis@eda.org
Subject: Re: [IBIS] problem with the pin mapping

Hi ,

I have generated the IBIS model for an I/O buffer.. I get the correct
waveforms.
However if i run IBISCHK4 on the IBIS Model, i get the following error.

ERROR - Component '32G0402': Pin Mapping Pin '2' not previously declared in
Pin
section.
ERROR - Component '32G0402': Pin Mapping Pin '3' not previously declared in
Pin
section.

[Pin] signal_name model_name R_pin L_pin C_pin
1 vss GND
| 2 DA dummy
| 3 EN dummy
6 vssio GND
7 vddio POWER
9 PAD iobuffer
12 vdd POWER
|
[Pin Mapping] pulldown_ref pullup_ref gnd_clamp_ref
power_clamp_ref
|
1 DRV_GND NC
2 NC NC
3 NC NC
6 CLMP_GND NC
7 NC CLMP_VDD
9 DRV_GND DRV_VDD CLMP_GND CLMP_VDD
12 NC DRV_VDD

Now if i remove the comments from Pin name 2 and 3 from the pin section,
than i
get the following error :-
ERROR - Component '32G0402': Model 'dummy' for Pin '2' not defined.
ERROR - Component '32G0402': Model 'dummy' for Pin '3' not defined.

How do i get over this error ?

Thx,
Vivek

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