From: owner-ibis-users@eda.org (ibis-users) To: ibis-users-digest@eda.org Subject: ibis-users V1 #66 Reply-To: Sender: owner-ibis-users@eda.org Errors-To: owner-ibis-users@eda.org Precedence: bulk ibis-users Tuesday, October 4 2005 Volume 01 : Number 066 ---------------------------------------------------------------------- Date: Fri, 16 Sep 2005 16:17:38 -0700 From: "Mirmak, Michael" Subject: [IBIS-Users] IBIS Modeling Cookbook for Version 4.0 available! The IBIS Open Forum is pleased to announce the availability of the IBIS Modeling Cookbook for Version 4.0! A substantial expansion of the 1997 version, this document provides detailed explanations for many aspects of the IBIS specification, and provides recommendations for extracting buffer data and properly using it to create IBIS models. Subjects covered include: - - use of several common IBIS 3.2 and 4.0 keywords and features - - clamp adjustment techniques for internal terminations - - differential buffer treatment under IBIS - - pre-emphasis modeling techniques - - tips on matching of V-t and I-V table data - - C_comp extraction and many others. The document, in several formats, is available at the following URL: http://www.eda.org/ibis/cookbook/ The Cookbook was a collaborative effort by several volunteers through the Cookbook Task Group of the IBIS Open Forum. Many thanks to them for their hard work over the last year. Comments on the document are welcome! - - Michael Mirmak Intel Corp. Chair, EIA IBIS Open Forum http://www.eigroup.org/ibis/ http://www.eda.org/ibis/ |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Wed, 21 Sep 2005 11:37:38 -0700 From: "Sanjay Mehta" Subject: [IBIS-Users] S2IBIS code compiling in Linux Hi, I have been trying to compile the linux version of the S2IBIS code that is posted on the IBIS website. The code compiles without any errors (I am using Redhat Enterprise Linux WS 3). Unfortunately, I am having problems in getting the correct V-t tables when I use this script. Upon execution of the binary s2ibis, the IBIS model is generated; however, the V-T table is incorrect. The problem seems to be the following: In the *.sp files that the are created with the S2IBIS script, which generate the V-T curves (i.e. a00io.sp, a01io.sp....z00io.sp, z01io.sp) there is a line that states... RFIXS2I dum13806 dum13806 50 Normally, this line should read RFIXS2I pin dum13806 50 --> where "pin" is the IO pad that is being swept for the I-V and connected to the R-fixture for the V-T. Unfortunately, I cannot run the default executable on the website as I am using a special in-house version of HSPICE and so I have recompile the code with the correct addition of the HSPICE command line. If there is anyone who has been successful at compiling in Linux and have some suggestions, please let me know. Thank you. Sanjay Mehta Xilinx, Inc. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Wed, 21 Sep 2005 12:29:18 -0700 From: "Lynne D. Green" Subject: [IBIS-Users] Re: [IBIS] S2IBIS code compiling in Linux Hello, Sanjay, This will be very valuable to the IBIS community. Your effort will be greatly appreciated by all of us. On the IBIS web site, the latest version is s2ibis3. Best regards, Lynne On Wed, 2005-09-21 at 11:37, Sanjay Mehta wrote: > Hi, > > I have been trying to compile the linux version of the S2IBIS code that > is posted on the IBIS website. The code compiles without any errors (I > am using Redhat Enterprise Linux WS 3). Unfortunately, I am having > problems in getting the correct V-t tables when I use this script. Upon > execution of the binary s2ibis, the IBIS model is generated; however, > the V-T table is incorrect. The problem seems to be the following: > > In the *.sp files that the are created with the S2IBIS script, which > generate the V-T curves (i.e. a00io.sp, a01io.sp....z00io.sp, z01io.sp) > there is a line that states... > > RFIXS2I dum13806 dum13806 50 > > Normally, this line should read > > RFIXS2I pin dum13806 50 --> where "pin" is the IO pad that is being > swept for the I-V and connected to the R-fixture for the V-T. > > Unfortunately, I cannot run the default executable on the website as I > am using a special in-house version of HSPICE and so I have recompile > the code with the correct addition of the HSPICE command line. > > If there is anyone who has been successful at compiling in Linux and > have some suggestions, please let me know. Thank you. > > Sanjay Mehta > Xilinx, Inc. > > > ----------------------------------------------------------------- > |For help or to subscribe/unsubscribe, email majordomo@eda.org > |with the appropriate command message(s) in the body: > | > | help > | subscribe ibis > | subscribe ibis-users > | unsubscribe ibis > | unsubscribe ibis-users > | > |or email a 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 - -- Lynne D. Green |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Thu, 22 Sep 2005 08:44:37 +0530 From: "Vivek Kumar Sundriyal" Subject: Re: [IBIS-Users] S2IBIS code compiling in Linux Sanjay , This is a problem that I too had faced when I used to use s2ibis2 on linux. To get over this problem, you need to make some slight changes in the source code of s2ibis2. It then works fine. But , Is there any specific reason you need to work on s2ibis2 ? I suggest you to move to s2ibis3, which is in Java and hence OS independent. I observed that the results of the Pullup/Pulldown results are better in s2ibis3. Download the latest s2ibis3 and try working on that. Cheers , Vivek "Sanjay Mehta" cc: Sent by: Subject: [IBIS-Users] S2IBIS code compiling in Linux owner-ibis-users@ eda.org 09/22/05 12:07 AM Hi, I have been trying to compile the linux version of the S2IBIS code that is posted on the IBIS website. The code compiles without any errors (I am using Redhat Enterprise Linux WS 3). Unfortunately, I am having problems in getting the correct V-t tables when I use this script. Upon execution of the binary s2ibis, the IBIS model is generated; however, the V-T table is incorrect. The problem seems to be the following: In the *.sp files that the are created with the S2IBIS script, which generate the V-T curves (i.e. a00io.sp, a01io.sp....z00io.sp, z01io.sp) there is a line that states... RFIXS2I dum13806 dum13806 50 Normally, this line should read RFIXS2I pin dum13806 50 --> where "pin" is the IO pad that is being swept for the I-V and connected to the R-fixture for the V-T. Unfortunately, I cannot run the default executable on the website as I am using a special in-house version of HSPICE and so I have recompile the code with the correct addition of the HSPICE command line. If there is anyone who has been successful at compiling in Linux and have some suggestions, please let me know. Thank you. Sanjay Mehta Xilinx, Inc. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Thu, 22 Sep 2005 20:42:59 +0800 From: "Kong Yew Chan" Subject: [IBIS-Users] Modeling Differential Open Drain With Internal Pullup Termination This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5BF73.2A2CE100 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi, =20 I have been trying to model/generate IBIS for a differential open-drain with internal pullup termination. I am confused on the load resistance setup to obtain the V-T curves. For usual open-drain, 1 rising waveform and 1 falling waveform to recommended pullup resistor termination and voltage is sufficient.=20 =20 However, if the pullup resistor termination and voltage is internal, how should I connect the output for V-T table? If anyone has suggestions, please let me know. Thanks. =20 Best regards, Kong-Yew - ------_=_NextPart_001_01C5BF73.2A2CE100 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi,

 

I have been trying to model/generate IBIS for a = differential open-drain with internal pullup termination. I am confused on the load resistance setup to obtain the V-T curves. For usual open-drain, 1 = rising waveform and 1 falling waveform to recommended pullup resistor termination and = voltage is sufficient.

 

However, if the pullup resistor termination and = voltage is internal, how should I connect the output for V-T table? If anyone has suggestions, please let me know. Thanks.

 

Best regards,

Kong-Yew

- ------_=_NextPart_001_01C5BF73.2A2CE100-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Thu, 22 Sep 2005 07:32:36 -0700 From: "Sanjay Mehta" Subject: RE: [IBIS-Users] S2IBIS code compiling in Linux This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5BF82.AEDB5B4D Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Vivek, =20 I will definitely try s2ibis3. But would definitely be interested in = knowing the changes you made in the source code for s2ibis2. =20 - - Sanjay ________________________________ From: Vivek Kumar Sundriyal [mailto:Vivek.Kumar.Sundriyal@nsc.com] Sent: Wed 9/21/2005 8:14 PM To: sanjay.mehta Cc: ibis@eda.org; ibis-users@eda.org; owner-ibis-users@eda.org Subject: Re: [IBIS-Users] S2IBIS code compiling in Linux Sanjay , This is a problem that I too had faced when I used to use s2ibis2 on = linux. To get over this problem, you need to make some slight changes in the = source code of s2ibis2. It then works fine. But , Is there any specific reason you need to work on s2ibis2 ? I suggest you to move to s2ibis3, which is in Java and hence OS = independent. I observed that the results of the Pullup/Pulldown results are better in = s2ibis3. Download the latest s2ibis3 and try working on that. Cheers , Vivek = =20 "Sanjay Mehta" = =20 cc: = =20 Sent by: Subject: [IBIS-Users] = S2IBIS code compiling in Linux =20 owner-ibis-users@ = =20 eda.org = =20 = =20 = =20 09/22/05 12:07 AM = =20 = =20 = =20 Hi, I have been trying to compile the linux version of the S2IBIS code that is posted on the IBIS website. The code compiles without any errors (I am using Redhat Enterprise Linux WS 3). Unfortunately, I am having problems in getting the correct V-t tables when I use this script. Upon execution of the binary s2ibis, the IBIS model is generated; however, the V-T table is incorrect. The problem seems to be the following: In the *.sp files that the are created with the S2IBIS script, which generate the V-T curves (i.e. a00io.sp, a01io.sp....z00io.sp, z01io.sp) there is a line that states... RFIXS2I dum13806 dum13806 50 Normally, this line should read RFIXS2I pin dum13806 50 --> where "pin" is the IO pad that is being swept for the I-V and connected to the R-fixture for the V-T. Unfortunately, I cannot run the default executable on the website as I am using a special in-house version of HSPICE and so I have recompile the code with the correct addition of the HSPICE command line. If there is anyone who has been successful at compiling in Linux and have some suggestions, please let me know. Thank you. Sanjay Mehta Xilinx, Inc. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 - ------_=_NextPart_001_01C5BF82.AEDB5B4D Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable =0A= =0A= =0A= =0A= =0A= =0A= Re: [IBIS-Users] S2IBIS code compiling in Linux=0A= =0A= =0A=
=0A=
Hi = Vivek,
=0A=
 
=0A=
I will definitely try = s2ibis3. But would =0A= definitely be interested in knowing the changes you made in the source = code for =0A= s2ibis2.
=0A=
 
=0A=
- Sanjay
=0A=

=0A=
=0A= From: Vivek Kumar Sundriyal =0A= [mailto:Vivek.Kumar.Sundriyal@nsc.com]
Sent: Wed 9/21/2005 = 8:14 =0A= PM
To: sanjay.mehta
Cc: ibis@eda.org; = ibis-users@eda.org; =0A= owner-ibis-users@eda.org
Subject: Re: [IBIS-Users] S2IBIS code =0A= compiling in Linux

=0A=
=0A=

Sanjay ,

This is a problem that I too had faced = when I =0A= used to use s2ibis2 on linux. To
get over this problem, you need to = make some =0A= slight changes in the source code
of s2ibis2. It then works = fine.

But =0A= , Is there any specific reason you need to work on s2ibis2 ?

I = suggest =0A= you to move to s2ibis3, which is in Java and hence OS independent. = I
observed =0A= that the results of the Pullup/Pulldown results are better in =0A= s2ibis3.

Download the latest s2ibis3 and try working on =0A= that.


Cheers =0A= ,

Vivek




      &nb= sp;           &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;     
     &nbs= p;            = ;    =0A= "Sanjay =0A= Mehta"           &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;           &n= bsp; 
          = ;            =0A= <sanjay.mehta@xil        =0A= To:       ibis-users@eda.org, =0A= ibis@eda.org          &= nbsp;           &n= bsp;           &nb= sp;          
 =             &= nbsp;        =0A= inx.com>          &n= bsp;      =0A= cc:           &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           
=             &= nbsp;         =0A= Sent =0A= by:           &nbs= p;     =0A= Subject:  [IBIS-Users] S2IBIS code compiling in =0A= Linux           &n= bsp;           &nb= sp;          
 =             &= nbsp;        =0A= owner-ibis-users@         &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;
           =            =0A= eda.org           =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;        
  &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;           &n= bsp;         
  = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;          
 =             &= nbsp;        =0A= 09/22/05 12:07 =0A= AM            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;          
 &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =            
&nb= sp;           &nbs= p;            = ;            =             &= nbsp;           &n= bsp;           &nb= sp;           &nbs= p;            = ;            =             &= nbsp;           



Hi,

I =0A= have been trying to compile the linux version of the S2IBIS code = that
is =0A= posted on the IBIS website. The code compiles without any errors = (I
am using =0A= Redhat Enterprise Linux WS 3). Unfortunately, I am having
problems in = getting =0A= the correct V-t tables when I use this script. Upon
execution of the = binary =0A= s2ibis, the IBIS model is generated; however,
the V-T table is = incorrect. The =0A= problem seems to be the following:

In the *.sp files that the are = created =0A= with the S2IBIS script, which
generate the V-T curves (i.e. a00io.sp, =0A= a01io.sp....z00io.sp, z01io.sp)
there is a line that = states...

RFIXS2I =0A= dum13806 dum13806 50

Normally, this line should = read

RFIXS2I =0A= pin  dum13806 50   --> where "pin" is the IO pad that = is =0A= being
swept for the I-V and connected to the R-fixture for the =0A= V-T.

Unfortunately, I cannot run the default executable on the = website as =0A= I
am using a special in-house version of HSPICE and so I have =0A= recompile
the code with the correct addition of the HSPICE command =0A= line.

If there is anyone who has been successful at compiling in = Linux =0A= and
have some suggestions, please let me know. Thank = you.

Sanjay =0A= Mehta
Xilinx, =0A= Inc.


|--------------------------------------------------------= - ----------
|For =0A= help or to subscribe/unsubscribe, email majordomo@eda.org
|with just = the =0A= appropriate command message(s) in the body:
|
|  = help
|  =0A= subscribe   ibis       = <optional =0A= e-mail address, if different>
|  subscribe   = ibis-users =0A= <optional e-mail address, if different>
|  unsubscribe =0A= ibis       <optional e-mail address, if =0A= different>
|  unsubscribe ibis-users <optional e-mail = address, if =0A= different>
|
|or email a written request to =0A= ibis-request@eda.org.
|
|IBIS reflector archives exist =0A= under:
|
|  http://www.eda.org/pu= b/ibis/email_archive/  =0A= Recent
|  http://www.eda.org/pu= b/ibis/users_archive/  =0A= Recent
|  http://www.eda.org/pub/ibis/e= mail/          =0A= E-mail since 1993






=0A= =0A= =0A= - ------_=_NextPart_001_01C5BF82.AEDB5B4D-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Thu, 22 Sep 2005 10:57:43 -0700 From: "Eric Hsu" Subject: RE: [IBIS-Users] S2IBIS code compiling in Linux Vivek, By using s2ibis3, I generated three pullup/pulldown I-V curves(max/typ/min), and I used Hspice to run simulation for spice netlist and ibis model. Then, the result show there is very good correlation, but only on typical corner. For max/min corner, I believe there still are some problems cause curves different. Best Regards, Eric Hsu Interface Technologies NetLogic Microsystems, Inc. 1875 Charleston Rd. Mountain View, CA 94043 650-961-6676 x198 This e-mail contains NetLogic Microsystems, Inc. Confidential information - -----Original Message----- From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org]On Behalf Of Vivek Kumar Sundriyal Sent: Wednesday, September 21, 2005 8:15 PM To: Sanjay Mehta Cc: ibis@eda.org; ibis-users@eda.org; owner-ibis-users@eda.org Subject: Re: [IBIS-Users] S2IBIS code compiling in Linux Sanjay , This is a problem that I too had faced when I used to use s2ibis2 on linux. To get over this problem, you need to make some slight changes in the source code of s2ibis2. It then works fine. But , Is there any specific reason you need to work on s2ibis2 ? I suggest you to move to s2ibis3, which is in Java and hence OS independent. I observed that the results of the Pullup/Pulldown results are better in s2ibis3. Download the latest s2ibis3 and try working on that. Cheers , Vivek "Sanjay Mehta" cc: Sent by: Subject: [IBIS-Users] S2IBIS code compiling in Linux owner-ibis-users@ eda.org 09/22/05 12:07 AM Hi, I have been trying to compile the linux version of the S2IBIS code that is posted on the IBIS website. The code compiles without any errors (I am using Redhat Enterprise Linux WS 3). Unfortunately, I am having problems in getting the correct V-t tables when I use this script. Upon execution of the binary s2ibis, the IBIS model is generated; however, the V-T table is incorrect. The problem seems to be the following: In the *.sp files that the are created with the S2IBIS script, which generate the V-T curves (i.e. a00io.sp, a01io.sp....z00io.sp, z01io.sp) there is a line that states... RFIXS2I dum13806 dum13806 50 Normally, this line should read RFIXS2I pin dum13806 50 --> where "pin" is the IO pad that is being swept for the I-V and connected to the R-fixture for the V-T. Unfortunately, I cannot run the default executable on the website as I am using a special in-house version of HSPICE and so I have recompile the code with the correct addition of the HSPICE command line. If there is anyone who has been successful at compiling in Linux and have some suggestions, please let me know. Thank you. Sanjay Mehta Xilinx, Inc. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Fri, 23 Sep 2005 08:22:31 +0530 From: "Vivek Kumar Sundriyal" Subject: RE: [IBIS-Users] S2IBIS code compiling in Linux Sanjay , In the file, s2ispice.c , there is an sprintf statement ( approximatly at line 2175 ). Comment that statement and replace it with this code : sprintf( dummyBuffer, resString[spiceType], "RFIXS2I", nodeList[nodeIndex], nodeList[nodeIndex+1], currentWave_P->R_fixture ); nodeIndex++ ; This should solve the problem. Thanks , Vivek "Sanjay Mehta" inx.com> cc: ibis@eda.org, ibis-users@eda.org, owner-ibis-users@eda.org 09/22/05 08:02 PM Subject: RE: [IBIS-Users] S2IBIS code compiling in Linux Hi Vivek, I will definitely try s2ibis3. But would definitely be interested in knowing the changes you made in the source code for s2ibis2. - - Sanjay From: Vivek Kumar Sundriyal [mailto:Vivek.Kumar.Sundriyal@nsc.com] Sent: Wed 9/21/2005 8:14 PM To: sanjay.mehta Cc: ibis@eda.org; ibis-users@eda.org; owner-ibis-users@eda.org Subject: Re: [IBIS-Users] S2IBIS code compiling in Linux Sanjay , This is a problem that I too had faced when I used to use s2ibis2 on linux. To get over this problem, you need to make some slight changes in the source code of s2ibis2. It then works fine. But , Is there any specific reason you need to work on s2ibis2 ? I suggest you to move to s2ibis3, which is in Java and hence OS independent. I observed that the results of the Pullup/Pulldown results are better in s2ibis3. Download the latest s2ibis3 and try working on that. Cheers , Vivek "Sanjay Mehta" cc: Sent by: Subject: [IBIS-Users] S2IBIS code compiling in Linux owner-ibis-users@ eda.org 09/22/05 12:07 AM Hi, I have been trying to compile the linux version of the S2IBIS code that is posted on the IBIS website. The code compiles without any errors (I am using Redhat Enterprise Linux WS 3). Unfortunately, I am having problems in getting the correct V-t tables when I use this script. Upon execution of the binary s2ibis, the IBIS model is generated; however, the V-T table is incorrect. The problem seems to be the following: In the *.sp files that the are created with the S2IBIS script, which generate the V-T curves (i.e. a00io.sp, a01io.sp....z00io.sp, z01io.sp) there is a line that states... RFIXS2I dum13806 dum13806 50 Normally, this line should read RFIXS2I pin dum13806 50 --> where "pin" is the IO pad that is being swept for the I-V and connected to the R-fixture for the V-T. Unfortunately, I cannot run the default executable on the website as I am using a special in-house version of HSPICE and so I have recompile the code with the correct addition of the HSPICE command line. If there is anyone who has been successful at compiling in Linux and have some suggestions, please let me know. Thank you. Sanjay Mehta Xilinx, Inc. |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Fri, 23 Sep 2005 10:51:33 -0600 From: rrwolff@micron.com Subject: [IBIS-Users] [IBIS] Open forum minutes (09/16/05) This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C05F.0DF2BB81 Content-Type: multipart/alternative; boundary="----_=_NextPart_002_01C5C05F.0DF2BB81" - ------_=_NextPart_002_01C5C05F.0DF2BB81 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Attached are the minutes of the Friday, September 16, 2005 IBIS Open Forum teleconference. Randy Wolff IBIS Open Forum Secretary <>=20 - ------_=_NextPart_002_01C5C05F.0DF2BB81 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable [IBIS] Open forum minutes (09/16/05)

Attached are the minutes of the = Friday, September 16, 2005 IBIS Open Forum teleconference.

Randy Wolff
IBIS Open Forum Secretary


= <<m091605.txt>>

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http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993 ------------------------------ Date: Mon, 26 Sep 2005 08:41:51 -0700 From: "Muranyi, Arpad" Subject: RE: [IBIS-Users] Modeling Differential Open Drain With Internal Pullup Termination This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C2B0.D0942657 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Kong-Yew, =20 Just do it as any other time. Don't worry about the internal termination. Use an external 50 Ohm (or whatever is needed) resistor to get your Vt data. =20 By the way, the new IBIS Cookbook is available now, you may want to read it. It has a lot of good stuff on differential models. =20 Arpad =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D =20 ________________________________ From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On = Behalf Of Kong Yew Chan Sent: Thursday, September 22, 2005 5:43 AM To: ibis-users@eda.org Subject: [IBIS-Users] Modeling Differential Open Drain With Internal = Pullup Termination Hi, =20 I have been trying to model/generate IBIS for a differential open-drain = with internal pullup termination. I am confused on the load resistance = setup to obtain the V-T curves. For usual open-drain, 1 rising waveform = and 1 falling waveform to recommended pullup resistor termination and = voltage is sufficient.=20 =20 However, if the pullup resistor termination and voltage is internal, how = should I connect the output for V-T table? If anyone has suggestions, = please let me know. Thanks. =20 Best regards, Kong-Yew - ------_=_NextPart_001_01C5C2B0.D0942657 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Kong-Yew,
 
Just do it=20 as any other time.  Don't worry about the
internal=20 termination.  Use an external 50 Ohm (or = whatever
is needed)=20 resistor to get your Vt data.
 
By the way,=20 the new IBIS Cookbook is available now, you
may want to=20 read it.  It has a lot of good stuff on
differential=20 models.
 
Arpad
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
 

From: owner-ibis-users@eda.org=20 [mailto:owner-ibis-users@eda.org] On Behalf Of Kong Yew=20 Chan
Sent: Thursday, September 22, 2005 5:43 AM
To:=20 ibis-users@eda.org
Subject: [IBIS-Users] Modeling Differential = Open=20 Drain With Internal Pullup Termination

Hi,

 

I have been trying to = model/generate=20 IBIS for a differential open-drain with internal pullup termination. I = am=20 confused on the load resistance setup to obtain the V-T curves. For = usual=20 open-drain, 1 rising waveform and 1 falling waveform to recommended = pullup=20 resistor termination and voltage is sufficient.

 

However, if the pullup = resistor=20 termination and voltage is internal, how should I connect the output for = V-T=20 table? If anyone has suggestions, please let me know. = Thanks.

 

Best = regards,

Kong-Yew

- ------_=_NextPart_001_01C5C2B0.D0942657-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Wed, 28 Sep 2005 08:05:56 -0700 From: "Ray Anderson" Subject: [IBIS-Users] R_pkg characterization frequency This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C43E.20B181A4 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable =20 In checking the IBIS spec I find that the comments given for the [Package] keyword parameter R_pkg are non-specific when it comes to characterization frequency. Is R_pkg normally specified as a DC value or as a high frequency value? =20 When we generate our .pkg file format package models we specify that the R value given is calculated at 500 MHz. Is it appropriate to utilize these 500 MHz R values to determine the min/nom/max values given for R_pkg ? =20 - -Ray =20 =20 Raymond Anderson Senior Signal Integrity Staff Engineer Product Technology Department Advanced Package R&D Xilinx Inc. =20 =20 - ------_=_NextPart_001_01C5C43E.20B181A4 Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

 

In checking the IBIS spec I find that the comments = given for the [Package] keyword parameter R_pkg are non-specific when it comes to characterization frequency. Is R_pkg normally specified as a DC value or = as a high frequency value?

 

When we generate our .pkg file format package models = we specify that the R value given is calculated at 500 MHz. Is it = appropriate to utilize these 500  MHz  R values to determine the min/nom/max values = given for R_pkg ?

 

-Ray

 

 

Raymond = Anderson

Senior Signal Integrity Staff Engineer

Product = Technology Department

Advanced = Package R&D

Xilinx = Inc.

 <= /p>

 

- ------_=_NextPart_001_01C5C43E.20B181A4-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Thu, 29 Sep 2005 08:12:17 -0700 From: "Mirmak, Michael" Subject: RE: [IBIS-Users] R_pkg characterization frequency This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C508.2ED3B533 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Ray, =20 Thanks for writing. No statement is made in the IBIS specification about frequency in relation to losses for RLC data in [Pin] or [Package]. However, the specification does state that the R term for [Package Model] is DC only. =20 =20 Because the original IBIS package model definitions do not explicitly support frequency-dependent effects, ICM may be a better option for you to model these losses in packages. ICM-IBIS integration is being explored through the IBIS Futures Task Group now, as ICM models and support for them become more widespread. =20 I hope this helps! =20 - - Michael Mirmak Intel Corp. Chair, EIA IBIS Open Forum http://www.eigroup.org/ibis/ http://www.eda.org/ibis/ ________________________________ From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Ray Anderson Sent: Wednesday, September 28, 2005 8:06 AM To: ibis-users@eda.org Cc: Ray Anderson Subject: [IBIS-Users] R_pkg characterization frequency =20 In checking the IBIS spec I find that the comments given for the [Package] keyword parameter R_pkg are non-specific when it comes to characterization frequency. Is R_pkg normally specified as a DC value or as a high frequency value? =20 When we generate our .pkg file format package models we specify that the R value given is calculated at 500 MHz. Is it appropriate to utilize these 500 MHz R values to determine the min/nom/max values given for R_pkg ? =20 - -Ray =20 =20 Raymond Anderson Senior Signal Integrity Staff Engineer Product Technology Department Advanced Package R&D Xilinx Inc. =20 =20 - ------_=_NextPart_001_01C5C508.2ED3B533 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable
Ray,
 
Thanks for writing.  No statement is made = in the IBIS=20 specification about frequency in relation to losses for RLC = data in=20 [Pin] or [Package].  However, the specification does state = that=20 the R term for [Package Model] is DC only. 
 
Because the original IBIS package model = definitions do not=20 explicitly support frequency-dependent effects, ICM may be a better = option for=20 you to model these losses in packages.  ICM-IBIS integration is = being=20 explored through the IBIS Futures Task Group now, as ICM models and = support for=20 them become more widespread.
 
I hope this helps!
 
- Michael Mirmak
  Intel = Corp.
  Chair, EIA=20 IBIS Open Forum
  http://www.eigroup.org/ibis/ =20 http://www.eda.org/ibis/

From: owner-ibis-users@eda.org=20 [mailto:owner-ibis-users@eda.org] On Behalf Of Ray=20 Anderson
Sent: Wednesday, September 28, 2005 8:06 = AM
To:=20 ibis-users@eda.org
Cc: Ray Anderson
Subject: = [IBIS-Users]=20 R_pkg characterization frequency

 

In checking the IBIS spec = I find=20 that the comments given for the [Package] keyword parameter R_pkg are=20 non-specific when it comes to characterization frequency. Is R_pkg = normally=20 specified as a DC value or as a high frequency=20 value?

 

When we generate our .pkg = file=20 format package models we specify that the R value given is calculated at = 500=20 MHz. Is it appropriate to utilize these 500  MHz  R values to=20 determine the min/nom/max values given for R_pkg = ?

 

-Ray

 

 

Raymond=20 Anderson

Senior = Signal=20 Integrity Staff Engineer

Product = Technology=20 Department

Advanced = Package=20 R&D

Xilinx=20 Inc.

 

 

- ------_=_NextPart_001_01C5C508.2ED3B533-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Thu, 29 Sep 2005 08:47:37 -0700 From: "Ray Anderson" Subject: RE: [IBIS-Users] R_pkg characterization frequency This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C50D.1E513BCC Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable Michael- =20 Thanks for your comments. =20 Yes, the spec does state that the R sub-parameter associated with the [Pin Numbers] keyword is a has a DC per-unit-length value for describing package stubs, however I don't interpret this to pertain to any of the other R definitions (the package global R_pkg parameter or the R values in the [Resistance Matrix section]. =20 Since current (non ICM) package models in IBIS do not explicitly support frequency dependent effects one needs to determine at which frequency it makes sense to extract (or measure) the package parasitic values. We have chosen to extract the RLC matrix values in our package models at 500 MHz for various reasons. It seems to me that to be self consistent, the min/nom/max values for R_pkg, L_pkg, and C_pkg defined in the [Package] section should coincide with the min/nom/max values for R, L and C defined in the [Package Model] section. Having a high frequency valued parameter in the model definition and a DC valued parameter in the global [Package] definition seems like an invitation to confusion and error. =20 We are currently considering the ICM models as a possibility for the future. One question that I have is when will the use of ICM style models become commonplace and which (if any) simulators currently support ICM models (or have ICM support on their roadmaps). =20 =20 Raymond Anderson Senior Signal Integrity Staff Engineer Product Technology Department Advanced Package R&D Xilinx Inc. =20 =20 ________________________________ From: Mirmak, Michael [mailto:michael.mirmak@intel.com]=20 Sent: Thursday, September 29, 2005 8:12 AM To: ray.anderson; ibis-users@eda.org Subject: RE: [IBIS-Users] R_pkg characterization frequency =20 Ray, =20 Thanks for writing. No statement is made in the IBIS specification about frequency in relation to losses for RLC data in [Pin] or [Package]. However, the specification does state that the R term for [Package Model] is DC only. =20 =20 Because the original IBIS package model definitions do not explicitly support frequency-dependent effects, ICM may be a better option for you to model these losses in packages. ICM-IBIS integration is being explored through the IBIS Futures Task Group now, as ICM models and support for them become more widespread. =20 I hope this helps! =20 - - Michael Mirmak Intel Corp. Chair, EIA IBIS Open Forum http://www.eigroup.org/ibis/ http://www.eda.org/ibis/ =20 ________________________________ From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Ray Anderson Sent: Wednesday, September 28, 2005 8:06 AM To: ibis-users@eda.org Cc: Ray Anderson Subject: [IBIS-Users] R_pkg characterization frequency =20 In checking the IBIS spec I find that the comments given for the [Package] keyword parameter R_pkg are non-specific when it comes to characterization frequency. Is R_pkg normally specified as a DC value or as a high frequency value? =20 When we generate our .pkg file format package models we specify that the R value given is calculated at 500 MHz. Is it appropriate to utilize these 500 MHz R values to determine the min/nom/max values given for R_pkg ? =20 - -Ray =20 =20 Raymond Anderson Senior Signal Integrity Staff Engineer Product Technology Department Advanced Package R&D Xilinx Inc. =20 =20 - ------_=_NextPart_001_01C5C50D.1E513BCC Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: quoted-printable

Michael-

 

Thanks for your = comments.

 

Yes, the spec does state that the R sub-parameter associated with the [Pin Numbers] keyword is a has a DC = per-unit-length value for describing package stubs, however I don’t interpret this = to pertain to any of the other R definitions (the package global R_pkg = parameter or the R values in the [Resistance Matrix = section].

 

Since current (non ICM) package = models in IBIS do not explicitly support frequency dependent effects one needs to determine at which frequency it makes sense to extract (or measure) the = package parasitic values. We have chosen to extract the RLC matrix values in our package models at 500 MHz for various reasons. It seems to me that to be = self consistent, the min/nom/max values for R_pkg, L_pkg, and C_pkg defined = in the [Package] section should coincide with the min/nom/max values for R, L = and C defined in the [Package Model] section. Having a high frequency valued parameter in the model definition and a DC valued parameter in the = global [Package] definition seems like an invitation to confusion and = error.

 

We are currently considering the = ICM models as a possibility for the future. One question that I have is when = will the use of ICM style models become commonplace and which (if any) = simulators currently support ICM models (or have ICM support on their = roadmaps).

 

 

Raymond = Anderson

Senior Signal Integrity Staff Engineer

Product = Technology Department

Advanced = Package R&D

Xilinx = Inc.

 

 

From: = Mirmak, Michael [mailto:michael.mirmak@intel.com]
Sent: Thursday, September = 29, 2005 8:12 AM
To: ray.anderson; ibis-users@eda.org
Subject: RE: [IBIS-Users] = R_pkg characterization frequency

 

Ray,

 

Thanks for writing.  No = statement is made in the IBIS specification about frequency in relation to losses for RLC data in [Pin] or [Package].  However, the specification does state that the R term for [Package Model] is DC only.  =

 

Because the original IBIS package = model definitions do not explicitly support frequency-dependent effects, ICM = may be a better option for you to model these losses in packages.  ICM-IBIS integration is being explored through the IBIS Futures Task Group now, = as ICM models and support for them become more = widespread.

 

I hope this = helps!

 

- Michael Mirmak
  Intel Corp.
  Chair, EIA IBIS Open Forum
  http://www.eigroup.org/ibis/   http://www.eda.org/ibis/

 

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Ray Anderson
Sent: Wednesday, = September 28, 2005 8:06 AM
To: = ibis-users@eda.org
Cc: Ray Anderson
Subject: [IBIS-Users] = R_pkg characterization frequency

 

In checking the IBIS spec I find that the comments = given for the [Package] keyword parameter R_pkg are non-specific when it comes to characterization frequency. Is R_pkg normally specified as a DC value or = as a high frequency value?

 

When we generate our .pkg file format package models = we specify that the R value given is calculated at 500 MHz. Is it = appropriate to utilize these 500  MHz  R values to determine the min/nom/max = values given for R_pkg ?

 

-Ray

 

 

Raymond = Anderson

Senior Signal = Integrity Staff Engineer

Product = Technology Department

Advanced = Package R&D

Xilinx = Inc.

 <= /p>

 

- ------_=_NextPart_001_01C5C50D.1E513BCC-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Thu, 29 Sep 2005 12:53:51 -0600 From: rrwolff@micron.com Subject: [IBIS-Users] [IBIS] Open forum Summit minutes (09/19/05) This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C527.223F8C16 Content-Type: multipart/alternative; boundary="----_=_NextPart_002_01C5C527.223F8C16" - ------_=_NextPart_002_01C5C527.223F8C16 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Attached are the minutes of the Monday, September 19, 2005 IBIS Open Forum Summit meeting at DesignCon East 2005. Randy Wolff IBIS Open Forum Secretary <>=20 - ------_=_NextPart_002_01C5C527.223F8C16 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable [IBIS] Open forum Summit minutes (09/19/05)

Attached are the minutes of the = Monday, September 19, 2005 IBIS Open Forum Summit meeting at DesignCon = East 2005.

Randy Wolff
IBIS Open Forum Secretary

= <<m091905.txt>>

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It's a function of the differential voltage, so that makes the usage of keyword [Series Current] appropriate in this case. To fill the I-V table, am I supposed to use the Vdiff vs Idiff ? 2) For the V-T table data extraction, it was mentioned in Pg 40 that for [Series Current] keyword, PWL current source can be used to replace the R value. What should be the PWL response to represent the Idiff? (Idiff was only found to be a function of Vdiff from I-V extraction).=20 =20 Please advise if my assumptions are incorrect. =20 =20 Thanks Kong-Yew - ------_=_NextPart_001_01C5C81D.5D947DD3 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

IBIS Gurus,

 

I have some questions about generating differential = buffer model as stated in latest Cookbook 4.0.

1)          My normalized differential mode current has a = similar plot as shown in Pg 36. It’s a function of the differential = voltage, so that makes the usage of keyword [Series Current] appropriate in this = case. To fill the I-V table, am I supposed to use the Vdiff vs Idiff = ?

2)          For the V-T table data extraction, it was = mentioned in Pg 40 that for [Series Current] keyword, PWL current source can be = used to replace the R value. What should be the PWL response to represent the = Idiff? (Idiff was only found to be a function of Vdiff from I-V extraction). =

 

Please advise if my assumptions are incorrect. =  

 

Thanks

Kong-Yew

- ------_=_NextPart_001_01C5C81D.5D947DD3-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Mon, 3 Oct 2005 08:49:13 -0700 From: "Muranyi, Arpad" Subject: [IBIS-Users] RE: [IBIS] Differential Buffer Modelling This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C832.00DFD705 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Kong-Yew, =20 1) You are correct. You would use Idiff and Vdiff for the table in [Series Current]. 2) You should use the same response (except with negative polarity) for the cancellation that you will use in your final model. If it was an [R Series], use a negative resistance, if it was [Series Current], use the same PWL table (with the signs reversed). =20 I hope this helps. =20 Arpad Muranyi Intel Corporation =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D ________________________________ From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Kong = Yew Chan Sent: Monday, October 03, 2005 6:21 AM To: ibis-users@eda.org; ibis@eda.org Subject: [IBIS] Differential Buffer Modelling IBIS Gurus, =20 I have some questions about generating differential buffer model as = stated in latest Cookbook 4.0. 1) My normalized differential mode current has a similar plot = as shown in Pg 36. It's a function of the differential voltage, so that = makes the usage of keyword [Series Current] appropriate in this case. To = fill the I-V table, am I supposed to use the Vdiff vs Idiff ? 2) For the V-T table data extraction, it was mentioned in Pg 40 = that for [Series Current] keyword, PWL current source can be used to = replace the R value. What should be the PWL response to represent the = Idiff? (Idiff was only found to be a function of Vdiff from I-V = extraction).=20 =20 Please advise if my assumptions are incorrect. =20 =20 Thanks Kong-Yew - ------_=_NextPart_001_01C5C832.00DFD705 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Kong-Yew,
 
1)  You are correct.  You would use = Idiff and=20 Vdiff for the table
    in [Series=20 Current].
2)  You should use the same response = (except with=20 negative polarity)
    for the cancellation that = you will=20 use in your final model.  If
    it was an [R Series], use = a negative=20 resistance, if it was [Series
    Current], use the same PWL = table=20 (with the signs reversed).
 
I hope this helps.
 
Arpad Muranyi
Intel Corporation
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D

From: owner-ibis@eda.org=20 [mailto:owner-ibis@eda.org] On Behalf Of Kong Yew = Chan
Sent:=20 Monday, October 03, 2005 6:21 AM
To: ibis-users@eda.org;=20 ibis@eda.org
Subject: [IBIS] Differential Buffer=20 Modelling

IBIS = Gurus,

 

I have some questions = about=20 generating differential buffer model as stated in latest Cookbook=20 4.0.

1)         =20 My normalized differential = mode=20 current has a similar plot as shown in Pg 36. It=92s a function of the=20 differential voltage, so that makes the usage of keyword [Series = Current]=20 appropriate in this case. To fill the I-V table, am I supposed to use = the Vdiff=20 vs Idiff ?

2)         =20 For the V-T table data = extraction,=20 it was mentioned in Pg 40 that for [Series Current] keyword, PWL current = source=20 can be used to replace the R value. What should be the PWL response to = represent=20 the Idiff? (Idiff was only found to be a function of Vdiff from I-V = extraction).=20

 

Please advise if my = assumptions are=20 incorrect.  

 

Thanks

Kong-Yew

- ------_=_NextPart_001_01C5C832.00DFD705-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Tue, 4 Oct 2005 18:26:43 +0800 From: "Kong Yew Chan" Subject: RE: [IBIS-Users] RE: [IBIS] Differential Buffer Modelling This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C8CE.1D5BDB16 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Thanks Arpad! I have further questions, hope you don't mind. =20 1) Is this method of measuring differential current applicable to "receiver" with on-die termination? 2) How does simulators interpret the [Series Current] keyword? Do they automatically apply the series [Model] upon locating the [Series Pin Mapping] information when the pins are used? Which simulator currently supports this keyword? HSPICE? Hyperlynx?=20 =20 Thanks. Kong-Yew =20 ________________________________ From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Muranyi, Arpad Sent: Monday, October 03, 2005 11:49 PM To: ibis-users@eda.org; ibis@eda.org Subject: [IBIS-Users] RE: [IBIS] Differential Buffer Modelling =20 Kong-Yew, =20 1) You are correct. You would use Idiff and Vdiff for the table in [Series Current]. 2) You should use the same response (except with negative polarity) for the cancellation that you will use in your final model. If it was an [R Series], use a negative resistance, if it was [Series Current], use the same PWL table (with the signs reversed). =20 I hope this helps. =20 Arpad Muranyi Intel Corporation =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 ________________________________ From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Kong Yew Chan Sent: Monday, October 03, 2005 6:21 AM To: ibis-users@eda.org; ibis@eda.org Subject: [IBIS] Differential Buffer Modelling IBIS Gurus, =20 I have some questions about generating differential buffer model as stated in latest Cookbook 4.0. 1) My normalized differential mode current has a similar plot as shown in Pg 36. It's a function of the differential voltage, so that makes the usage of keyword [Series Current] appropriate in this case. To fill the I-V table, am I supposed to use the Vdiff vs Idiff ? 2) For the V-T table data extraction, it was mentioned in Pg 40 that for [Series Current] keyword, PWL current source can be used to replace the R value. What should be the PWL response to represent the Idiff? (Idiff was only found to be a function of Vdiff from I-V extraction).=20 =20 Please advise if my assumptions are incorrect. =20 =20 Thanks Kong-Yew - ------_=_NextPart_001_01C5C8CE.1D5BDB16 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Thanks Arpad! I have further = questions, hope you don’t mind.

 

1)       Is this method = of measuring differential current applicable to “receiver” with = on-die termination?

2)       How does = simulators interpret the [Series Current] keyword? Do they automatically apply the series = [Model] upon locating the [Series Pin Mapping] information when the pins are = used? Which simulator currently supports this keyword? HSPICE? Hyperlynx? =

 

Thanks.

Kong-Yew

 

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Muranyi, Arpad
Sent: Monday, October 03, = 2005 11:49 PM
To: ibis-users@eda.org; ibis@eda.org
Subject: [IBIS-Users] RE: = [IBIS] Differential Buffer Modelling

 

Kong-Yew,

 

1)  You are correct.  You would use = Idiff and Vdiff for the table

    in [Series = Current].

2)  You should use the same response = (except with negative polarity)

    for the cancellation that = you will use in your final model.  If

    it was an [R Series], use = a negative resistance, if it was [Series

    Current], use the same PWL = table (with the signs reversed).

 

I hope this helps.

 

Arpad Muranyi

Intel Corporation

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

 

From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Kong Yew Chan
Sent: Monday, October 03, = 2005 6:21 AM
To: ibis-users@eda.org; ibis@eda.org
Subject: [IBIS] = Differential Buffer Modelling

IBIS Gurus,

 

I have some questions about generating differential = buffer model as stated in latest Cookbook 4.0.

1)        = ;  My normalized differential mode current has a similar plot as = shown in Pg 36. It’s a function of the differential voltage, so that makes = the usage of keyword [Series Current] appropriate in this case. To fill the = I-V table, am I supposed to use the Vdiff vs Idiff ?

2)        = ;  For the V-T table data extraction, it was mentioned in Pg 40 that = for [Series Current] keyword, PWL current source can be used to replace the = R value. What should be the PWL response to represent the Idiff? (Idiff = was only found to be a function of Vdiff from I-V extraction).

 

Please advise if my assumptions are incorrect. =  

 

Thanks

Kong-Yew

- ------_=_NextPart_001_01C5C8CE.1D5BDB16-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ Date: Tue, 4 Oct 2005 08:54:08 -0700 From: "Muranyi, Arpad" Subject: RE: [IBIS-Users] RE: [IBIS] Differential Buffer Modelling This is a multi-part message in MIME format. - ------_=_NextPart_001_01C5C8FB.DB999929 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Kong-Yew, =20 1) Yes, you can apply this technique to receivers with ODT too. =20 2) I can't tell you which tool supports these keywords. You should ask the vendors or try the tool and see what happens. =20 Arpad =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D ________________________________ From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Kong = Yew Chan Sent: Tuesday, October 04, 2005 3:27 AM To: ibis-users@eda.org; ibis@eda.org Subject: RE: [IBIS-Users] RE: [IBIS] Differential Buffer Modelling Thanks Arpad! I have further questions, hope you don't mind. =20 1) Is this method of measuring differential current applicable to = "receiver" with on-die termination? 2) How does simulators interpret the [Series Current] keyword? Do = they automatically apply the series [Model] upon locating the [Series = Pin Mapping] information when the pins are used? Which simulator = currently supports this keyword? HSPICE? Hyperlynx?=20 =20 Thanks. Kong-Yew =20 ________________________________ From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On = Behalf Of Muranyi, Arpad Sent: Monday, October 03, 2005 11:49 PM To: ibis-users@eda.org; ibis@eda.org Subject: [IBIS-Users] RE: [IBIS] Differential Buffer Modelling =20 Kong-Yew, =20 1) You are correct. You would use Idiff and Vdiff for the table in [Series Current]. 2) You should use the same response (except with negative polarity) for the cancellation that you will use in your final model. If it was an [R Series], use a negative resistance, if it was [Series Current], use the same PWL table (with the signs reversed). =20 I hope this helps. =20 Arpad Muranyi Intel Corporation =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 ________________________________ From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Kong = Yew Chan Sent: Monday, October 03, 2005 6:21 AM To: ibis-users@eda.org; ibis@eda.org Subject: [IBIS] Differential Buffer Modelling IBIS Gurus, =20 I have some questions about generating differential buffer model as = stated in latest Cookbook 4.0. 1) My normalized differential mode current has a similar plot = as shown in Pg 36. It's a function of the differential voltage, so that = makes the usage of keyword [Series Current] appropriate in this case. To = fill the I-V table, am I supposed to use the Vdiff vs Idiff ? 2) For the V-T table data extraction, it was mentioned in Pg 40 = that for [Series Current] keyword, PWL current source can be used to = replace the R value. What should be the PWL response to represent the = Idiff? (Idiff was only found to be a function of Vdiff from I-V = extraction).=20 =20 Please advise if my assumptions are incorrect. =20 =20 Thanks Kong-Yew - ------_=_NextPart_001_01C5C8FB.DB999929 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Kong-Yew,

 

1) Yes, you can apply this technique to = receivers with=20 ODT too.

 

2) I can't tell you which tool supports these = keywords.  You

should ask the vendors or try the tool and = see what=20 happens.

 

Arpad

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D


From: owner-ibis@eda.org=20 [mailto:owner-ibis@eda.org] On Behalf Of Kong Yew = Chan
Sent:=20 Tuesday, October 04, 2005 3:27 AM
To: ibis-users@eda.org;=20 ibis@eda.org
Subject: RE: [IBIS-Users] RE: [IBIS] Differential = Buffer=20 Modelling

Thanks Arpad! = I have=20 further questions, hope you don=92t mind.

 

1)      =20 Is this = method of=20 measuring differential current applicable to =93receiver=94 with on-die=20 termination?

2)      =20 How does = simulators=20 interpret the [Series Current] keyword? Do they automatically apply the = series=20 [Model] upon locating the [Series Pin Mapping] information when the pins = are=20 used? Which simulator currently supports this keyword? HSPICE? = Hyperlynx?=20

 

Thanks.

Kong-Yew

 

From:=20 owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Muranyi, = Arpad
Sent: Monday, October 03, 2005 = 11:49=20 PM
To: = ibis-users@eda.org;=20 ibis@eda.org
Subject: = [IBIS-Users] RE: [IBIS] Differential Buffer = Modelling

 

Kong-Yew,

 

1)  You are=20 correct.  You would use Idiff and Vdiff for the = table

    = in=20 [Series Current].

2)  You = should use the=20 same response (except with negative polarity)

    = for the=20 cancellation that you will use in your final model.  = If

    = it was an=20 [R Series], use a negative resistance, if it was = [Series

    = Current],=20 use the same PWL table (with the signs reversed).

 

I hope this=20 helps.

 

Arpad=20 Muranyi

Intel=20 Corporation

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

 

From:=20 owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Kong Yew = Chan
Sent: Monday, October 03, 2005 = 6:21=20 AM
To: = ibis-users@eda.org;=20 ibis@eda.org
Subject: = [IBIS]=20 Differential Buffer Modelling

IBIS = Gurus,

 

I have some questions = about=20 generating differential buffer model as stated in latest Cookbook=20 4.0.

1)         =20 My normalized differential = mode=20 current has a similar plot as shown in Pg 36. It=92s a function of the=20 differential voltage, so that makes the usage of keyword [Series = Current]=20 appropriate in this case. To fill the I-V table, am I supposed to use = the Vdiff=20 vs Idiff ?

2)         =20 For the V-T table data = extraction,=20 it was mentioned in Pg 40 that for [Series Current] keyword, PWL current = source=20 can be used to replace the R value. What should be the PWL response to = represent=20 the Idiff? (Idiff was only found to be a function of Vdiff from I-V = extraction).=20

 

Please advise if my = assumptions are=20 incorrect.  

 

Thanks

Kong-Yew

- ------_=_NextPart_001_01C5C8FB.DB999929-- |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis | subscribe ibis-users | unsubscribe ibis | unsubscribe ibis-users | |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 ------------------------------ End of ibis-users V1 #66 ************************