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
>
>|------------------------------------------------------------------
>|For help or to subscribe/unsubscribe, email majordomo@eda.org
>|with just the appropriate command message(s) in the body:
>|
>| help
>| subscribe ibis <optional e-mail address, if different>
>| subscribe ibis-users <optional e-mail address, if different>
>| unsubscribe ibis <optional e-mail address, if different>
>| unsubscribe ibis-users <optional e-mail address, if different>
>|
>|or email a written request to ibis-request@eda.org.
>|
>|IBIS reflector archives exist under:
>|
>| http://www.eda.org/pub/ibis/email_archive/ Recent
>| http://www.eda.org/pub/ibis/users_archive/ Recent
>| http://www.eda.org/pub/ibis/email/ E-mail since 1993
>
>
>
>

|------------------------------------------------------------------
|For help or to subscribe/unsubscribe, email majordomo@eda.org
|with just the appropriate command message(s) in the body:
|
| help
| subscribe ibis <optional e-mail address, if different>
| subscribe ibis-users <optional e-mail address, if different>
| unsubscribe ibis <optional e-mail address, if different>
| unsubscribe ibis-users <optional e-mail address, if different>
|
|or email a written request to ibis-request@eda.org.
|
|IBIS reflector archives exist under:
|
| http://www.eda.org/pub/ibis/email_archive/ Recent
| http://www.eda.org/pub/ibis/users_archive/ Recent
| http://www.eda.org/pub/ibis/email/ E-mail since 1993
Received on Tue May 18 21:50:07 2004