Re: [IBIS-Users] Timing test load

From: Todd Westerhoff <twesterh_at_.....>
Date: Mon Oct 13 2008 - 17:55:18 PDT
I agree with Arpad ... with the spec as it exists today, I don't think you can specify a series resistance in the test load.

What value of Rseries are you looking to include, and what is its purpose in the reference timing measurement?

Todd.
Todd Westerhoff
VP, Software Products
SiSoft
6 Clock Tower Place, Suite 250
Maynard, MA 01754
(978) 461-0449 x24
twesterh@sisoft.com
www.sisoft.com


Muranyi, Arpad wrote:
I am not sure you can.  The keyword [Test Load] may
let you do it with Rs_near and Rs_far, but I don't
see a Vmeas in this keyword, and its purpose is
slightly different (Golden Waveforms).
 
Arpad
====================================================


From: owner-ibis-users@server.eda.org [mailto:owner-ibis-users@server.eda.org] On Behalf Of Prabhat RANJAN
Sent: Monday, October 13, 2008 6:59 AM
To: ibis-users@server.eda.org
Cc: Prabhat RANJAN
Subject: [IBIS-Users] Timing test load

Hello Experts,

For a Output buffer IBIS model, I have following type Timing test load setup.


 _________
|                   |
|               |\ |                      Rseries              Rref
|DRIVER|  \|---O----/\/\/\----O----/\/\/\---o Vref
|               |  /|                                    |
|               |/  |                                 --- Cref
|_________ |                                 ---
                                                        |
                                                        |
                                                   GND

Vref, Cref and Rref keywords are existing in IBIS spec. But how can I mention Rseries resistance as TIMING TEST LOAD in my IBIS model?


-- 

Thanks n Regards
Prabhat Ranjan

  

--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.org |with the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |or e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993 Received on Tue Oct 14 06:00:03 2008

This archive was generated by hypermail 2.1.8 : Tue Oct 14 2008 - 06:01:20 PDT