RE: [IBIS-Users] How i use 100 ohm receiver resistence in my models

In the IBIS Version is in the file? It needs to be at least version 3.0 or
you will get parser errors.

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

-----Original Message-----
From: Akhilesh CHANDRA [mailto:akhilesh.chandra@st.com]
Sent: Tuesday, May 18, 2004 9:51 PM
To: tom@teraspeed.com
Cc: ibis-users; Akhilesh CHANDRA
Subject: Re: [IBIS-Users] How i use 100 ohm receiver resistence in my
models

Hello Tom,

  When I put series resistence between the pins in the following way,
then I find out MODEL TYPE Series is not supprted in my simulator and it
show syntax error. So the models are no more useful. Can I will do
something else or put this 100ohm resistence by some otherway.

 [Series Pin Mapping] pin_2 model_name function_table_group
 VIA VIB rterm_100

 [Model] rterm_100
 C_comp 0.1pF 0.1pF 0.1pF

 Model_type Series
 |variable R(typ) R(min) R(max)
 [R Series] 100 80 120

 [Temperature Range] 25.00 125.00 0.00
 [Voltage Range] 1.800 1.60 1.950

With best Regards
Akhilesh
Tom Dagostino wrote:

>Model the inputs as a normal input buffer. Model the termination as a
>series resistor between the two differential pins.
>
>Tom Dagostino
>Teraspeed Consulting Group LLC
>503-430-1065
>tom@teraspeed.com
>www.teraspeed.com
>
>-----Original Message-----
>From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org]On
>Behalf Of Akhilesh CHANDRA
>Sent: Tuesday, May 18, 2004 10:03 AM
>To: ibis-users
>Cc: Akhilesh CHANDRA
>Subject: [IBIS-Users] How i use 100 ohm receiver resistence in my models
>
>
>Hello Friends,
>
> I have LVDS RECEIVER cell in which a internal terminated 100ohm
>resistence is present. How I will incorporate this resistence in my models.
> When I validate my DRIVER and RECEIVER independently then everythis
>is fine but when I use a TX line between the driver and reciver the
>swing is reduce in my SPICE due to this 100ohm resistence and my SPICE
>and IBIS result become differ.
>
>Regards
>Akhilesh
>
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Received on Wed May 19 12:19:01 2004