From: owner-ibis-users@eda.org (ibis-users) To: ibis-users-digest@eda.org Subject: ibis-users V1 #162 Reply-To: Sender: owner-ibis-users@eda.org Errors-To: owner-ibis-users@eda.org Precedence: bulk ibis-users Monday, November 15 2010 Volume 01 : Number 162 ---------------------------------------------------------------------- Date: Mon, 15 Nov 2010 07:10:09 -0800 From: "Muranyi, Arpad" Subject: RE: [IBIS-Users] series model This is a multi-part message in MIME format. - ------_=_NextPart_001_01CB84D7.31F548F3 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Yitong, =20 Just add these two lines to your terminate_diff model: =20 C_comp 0.0 NA NA [Voltage Range] 1.0V NA NA =20 These two keywords are required by the IBIS specification, that's why you are getting the errors. You must use these keywords even if they don't make sense for the series model. =20 I hope this helps, =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 =20 From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Yitong Wen Sent: Thursday, November 11, 2010 7:19 PM To: 'ibis-users@eda.org' Subject: [IBIS-Users] series model =20 Hi experts, I created an IBIS model for LVDS buffer, it can be enabled/disabled internal terminating resistor(100-ohm) by user=20 Could you tell me how to include this function in an IBIS file? I edit the IBIS file as below(in red text): =20 [Pin] signal_name model_name R_pin L_pin C_pin | 3 Anyp a_p 4 Anyn a_n 1 Vcc Power 2 GND GND | [Series Pin Mapping] pin_2 model_name function_table_group 3 4 terminate_diff 1 | [Series Switch Groups] | Function Group States |On 1 / Off 1 / |********************************************************************* | [Diff Pin] inv_pin vdiff tdelay_typ tdelay_min tdelay_max | 3 4 NA NA NA NA | |********************************************************************* [Model] terminate_diff Model_type Series | | variable R(typ) R(min) R(max) [R Series] 100ohm 99hm 101ohm | |********************************************************************* =20 When running a syntax and IBIS parser check, there are errors as below: =20 ERROR - Model terminate_diff: One of C_comp, C_comp_pullup, C_comp_pulldown, C_comp_power_clamp, C_comp_gnd_clamp must be defined=20 ERROR - Model 'terminate_diff': Pullup Reference Required when No Voltage Range is Specified=20 ERROR - Model 'terminate_diff': Pulldown Reference Required when No Voltage Range is Specified=20 ERROR - Model 'terminate_diff': POWER Clamp Reference Required when No Voltage Range is Specified=20 ERROR - Model 'terminate_diff': GND Clamp Reference Required when No Voltage Range is Specified =20 I wonder if the series model need this parameters? If yes, what are the parameters? =20 Thanks Yitong =20 - --=20 This message has been scanned for viruses and=20 dangerous content by MailScanner , and is believed to be clean.=20 - --=20 This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. - ------_=_NextPart_001_01CB84D7.31F548F3 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Yitong,

 

= Just= add these two lines to your terminate_diff model:

 

C_comp  0.= 0   NA  NA

[Voltage Ra= nge] 1.0V  NA  NA

&nbs= p;

These two keywords are required by the = IBIS specification,

that’s wh= y you are getting the errors.  You must use these

keywords even if they don’t make sense for the seri= es model.

 

I hope this helps,

=  

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

 

= From:= owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf= Of Yitong Wen
Sent: Thursday, November 11, 2010 7:19 PM
<= b>To: 'ibis-users@eda.org'
Subject: [IBIS-Users] series model=

 

Hi experts,

= I created an IBIS model for LVDS buffer, it can be enabled/disabled interna= l terminating resistor(100-ohm) by user

Could you tell me how to include this function in an IBIS file?

I edit the IBIS file as below(in red text):<= o:p>

 =

[Pin]&nb= sp;   signal_name    model_name   &= nbsp; R_pin        L_pin  &nbs= p;     C_pin

|

3     Anyp   =          a_p

<= p class=3DMsoPlainText>4     = Anyn            a_n<= o:p>

1&nb= sp;    Vcc        &n= bsp;    Power

<= span style=3D'color:red'>2     GND   &nb= sp;         GND

|

=

[Series Pin Mapping] pin_= 2 model_name function_table_group

3 4 terminate_diff 1

|

[Series Switch Groups]

| Function = Group States

|On 1 /

Off 1 /

|******= ***************************************************************<= /p>

|

[Diff Pi= n]   inv_pin  vdiff  tdelay_typ  tdelay_min  = tdelay_max

|

3         &nbs= p;    4         = ;     NA        = ;  NA          NA &n= bsp;        NA

|

|*********************= ************************************************

[Model] terminate_diff

Model_type Series<= o:p>

|

| vari= able R(typ) R(min) R(max)

[R Series] 100ohm 99hm 101ohm

|

|******************************************************= ***************

 

=

When running  a syntax and IBIS parser check, = there are errors as below:

 = ;

ERROR - Model terminate_diff: One of C_c= omp, C_comp_pullup, C_comp_pulldown, C_comp_power_clamp, C_comp_gnd_clamp m= ust be defined

ERROR - Model 'termin= ate_diff': Pullup Reference Required when No Voltage Range is Specified

ERROR - Model 'terminate_diff': Pulldow= n Reference Required when No Voltage Range is Specified

ERROR - Model 'terminate_diff': POWER Clamp Reference R= equired when No Voltage Range is Specified

ERROR - Model 'terminate_diff': GND Clamp Reference Required when No= Voltage Range is Specified

&nbs= p;

I wonder if the series model need this = parameters?

If yes, what are the para= meters?

 

Thanks

Yitong

 


-- <= br>This message has been scanned for viruses and
dangerous content by <= a href=3D"http://www.mailscanner.info/">MailScanner, and is
= believed to be clean.


--=20
This message has been scanned for viruses and
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believed to be clean. - ------_=_NextPart_001_01CB84D7.31F548F3-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Fri, 22 Oct 2010 12:33:34 -0700 From: Bob Ross Subject: [IBIS-Users] Asian IBIS Summit (Taiwan) - Fifth Announcement To All: The IBIS Open Forum is holding an Asian IBIS Summit Meeting on Friday, November 12, 2010, in Taipei, Taiwan, a major technology center. The event is being held at the Sherwood Hotel. Co-sponsors are listed below. We are planning for a large number of attendees including several IBIS experts from the USA. The titles of 9 presentations are shown below. Several of these presentations will be given at the other Asian Summits. Please register to attend. Two other Asian IBIS Summit meetings are being held in November: Shenzhen, P.R. China, Tuesday November 9, Four Points Hotel Tokyo, Japan, Monday, November 15, JEITA headquarters Bob Ross Teraspeed Consulting Group Polin Chi Sigrity - ----------------------------------------------------------------------- ASIAN IBIS SUMMIT (TAIWAN) FIFTH CALL FOR PARTICIPATION - ----------------------------------------------------------------------- A S I A N I B I S S U M M I T ( T A I W A N ) Time/Date: Friday, November 12, 2010, 8:00 to 16:30 (date correction) Meeting starts at 8:30 AM Location: Sherwood Hotel 11 Min Sheng E Road, Sec. 3 Taipei, Taiwan Rooms: Ballroom I and II Content: Presentations and Discussions Purpose: Solicit and exchange IBIS and interconnect model related information and ideas. Co-sponsors (in alphabetical order): Agilent Technologies Avant Technology (IO Methodology) Foxconn ICT-Lanto Intel Corporation Sigrity Synopsys Cost: FREE, including refreshments and buffet lunch Vendors: Some vendors will have information tables outside the meeting room Contact us for details regarding sponsorship. BACKGROUND We have held many successful Summit meetings across Asia in previous years. This year we are adding a meeting in Taipei where many national and international high technology companies have operations. Presentations from past events are available at our Summit archive: http://www.eda.org/pub/ibis/summits/ Our objective is to reach out internationally to communicate with the local experts and to learn of regional concerns. CONFERENCE LANGUAGE The conference language is English, but we will plan for technical translations in English and Chinese. So presenters can optionally deliver in Chinese as long as an English version of the material is available. IBIS SUMMIT This meeting will be conducted as a formal IBIS Summit Meeting. Presentations will be archived in an electronic format on our Summits site, and minutes of the meeting will be issued. However, no formal decisions requiring votes will be planned. CALL FOR PARTICIPANTS People involved in IBIS and interconnect model development, EDA tool development, and digital circuit design are invited to participate in the Summit meeting. If you plan to participate, please register using the information below (in English): Name: E-mail address: Company: Top-level Web Link: Country: Telephone: Comments: Send to BOTH: Bob Ross, Teraspeed Consulting Group bob@teraspeed.com Polin Chi, Sigrity polinchi@sigrity.com SIGNUP DEADLINE: November 4, 2010 AGENDA 8:00 - 8:30 Vendor table setup and tables 8:00 - 8:30 Sign in 8:30 - 12:00 Presentations 12:00 - 13:30 Free buffet lunch, vendor tables 13:30 - 16:30 Presentations The specific agenda is being developed. The presentations cover a range of topics from user experiences, IBIS clarifications, and future technical directions in IBIS. Program Titles: Intel Corporation Introducing IBIS IO Methodology: Point Reduction Method for IBIS Curves Sigrity IBIS for SSO Analysis Micron Technology: Correlating C_pin Capacitance with Measurements Foxconn Enforced Passivity of S-Parameter Sampled Frequency Data Agilent Technologies: Automated AMI Model Generation & Validation Flextronics and Cadence Design Systems: Extending/Leveraging IBIS Constructs to Model High-Speed I/Os and Packages using AMI, Spice, and S-Parameters Intel Corporation: IBIS-ISS: What Is It and What It Means to You Cadence Design Systems, Sigrity, and Fujitsu VLSI Limited: Model Connection Protocol Extensions for Mixed Signal SiP LIST OF NEARBY HOTELS AND TRAVEL RULES Hotels in all price ranges can be found through internet searches. - ----------------------------------------------------------------- - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Labs 121 North River Drive 13610 SW Harness Lane Narragansett, RI 02882 Beaverton, OR 97008 401-284-1827 503-430-1065 http://www.teraspeed.com 503-246-8048 Direct bob@teraspeed.com Teraspeed is a registered service mark of Teraspeed Consulting Group LLC - -- 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 ------------------------------ Date: Thu, 4 Nov 2010 09:42:06 -0700 From: "Tom Dagostino" Subject: [IBIS-Users] RE: [SI-LIST] Ibis model Receiver help. This is a multi-part message in MIME format. - ------=_NextPart_000_11A1_01CB7C04.8CAA5E40 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Have you considered an EBD model for this? Tom Dagostino Teraspeed Labs 13610 SW Harness Lane Beaverton, OR 97008 503-430-1065 tom@teraspeed.com www.teraspeed.com Teraspeed Consulting Group LLC 121 North River Drive Narragansett, RI 02882 401-284-1827 www.teraspeed.com From: Peter LaFlamme [mailto:plaflamm@apm.com] Sent: Thursday, November 04, 2010 5:40 AM To: tom@teraspeed.com Cc: ibis@eda.org; ibis-users@eda.org; si-list@freelists.org; peterlaflamme@comcast.net Subject: Re: [SI-LIST] Ibis model Receiver help. Hi Tom and others, Thanks for all the help so far. The circuit between the pins includes AC coupling and rebias. Though the rebias is irrelevant the termination resistor and 2 inductors are also included. Thus the clamp data will only be a part of the model. I need to represent the AC coupling and termination circuit. Is there any way to do this? I understand that I can tell people to add these components to their simulations in such a fashion along with the package model. However, it makes things a bit more complicated. I would like to find a solution that would work within the model so the user does not have to do anything special. Thanks, Peter On Wed, Nov 3, 2010 at 11:37 AM, Tom Dagostino wrote: Peter This is one of those questions that has the "it depends" answer. What is the additional circuitry and which simulator are you trying to use are key elements that have a strong bearing on the answer. Regards, Tom Dagostino Teraspeed Labs 13610 SW Harness Lane Beaverton, OR 97008 503-430-1065 tom@teraspeed.com www.teraspeed.com Teraspeed Consulting Group LLC 121 North River Drive Narragansett, RI 02882 401-284-1827 www.teraspeed.com - -----Original Message----- From: si-list-bounce@freelists.org [mailto:si-list-bounce@freelists.org] On Behalf Of Peter LaFlamme Sent: Wednesday, November 03, 2010 5:34 AM To: ibis@eda.org; ibis-users@eda.org; si-list@freelists.org; peterlaflamme@comcast.net Subject: [SI-LIST] Ibis model Receiver help. > > Hi All, > I have a differential receiver model which has an internal 100-ohm series > resistor. However there is other circuitry between the P and N pins. Can > someone tell me if there is a way to use the [series resistor] keyword to > model this or is there another way to add this to the ibis model? > > Thanks, > Peter > CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and contains information that is confidential and proprietary to AppliedMicro Corporation or its subsidiaries. It is to be used solely for the purpose of furthering the parties' business relationship. All unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. - ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@freelists.org with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: http://www.freelists.org/webpage/si-list For help: si-list-request@freelists.org with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: http://www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and contains information that is confidential and proprietary to AppliedMicro Corporation or its subsidiaries. It is to be used solely for the purpose of furthering the parties' business relationship. All unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. - -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. - ------=_NextPart_000_11A1_01CB7C04.8CAA5E40 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Have you considered an EBD model for this?=

 

Tom Dagostino

Teraspeed Labs

13610 SW Harness Lane

Beaverton, OR 97008

503-430-1065

tom@teraspeed.com

www.teraspeed.com

 

Teraspeed Consulting Group LLC

121 North River Drive
Narragansett, RI 02882

401-284-1827

www.teraspeed.com 

 

From: Peter LaFlamme [mailto:plaflamm@apm.com]
Sent: Thursday, November 04, 2010 5:40 AM
To: tom@teraspeed.com
Cc: ibis@eda.org; ibis-users@eda.org; si-list@freelists.org; peterlaflamme@comcast.net
Subject: Re: [SI-LIST] Ibis model Receiver help.

 

Hi Tom and others,

Thanks for all the help so far. The circuit between th= e pins includes AC coupling and rebias. Though the rebias is irrelevant the termination resistor and 2 inductors are also included. Thus the clamp data will only be a part of the model. I need to represent the AC coupling and t= ermination circuit. Is there any way to do this? I understand that I can tell people to add these components to their simulations in such a fashion along with the package model. However, it makes things  a bit more complicated. I wou= ld like to find a solution that would work within the model so the user does n= ot have to do anything special.

 

 

Thanks,

Peter

 

 

On Wed, Nov 3, 2010 at 11:37 AM, Tom Dagostino <tom@teraspeed.com> wrote:

Peter

This is one of those questions that has the "it depends" answer.  What is
the additional circuitry and which simulator are you trying to use are key<= br> elements that have a strong bearing on the answer.

Regards,

Tom Dagostino
Teraspeed Labs
13610 SW Harness Lane
Beaverton, OR 97008
503-430-1065
tom@teraspeed.com
www.teraspeed.com

Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
401-284-1827
www.teraspeed.com



- -----Original Message-----
From: si-list-bounce@freeli= sts.org [mailto:si-list-bounce@free= lists.org] On
Behalf Of Peter LaFlamme
Sent: Wednesday, November 03, 2010 5:34 AM
To: ibis@eda.org; ibis-users@eda.org; si-list@freelists.org;
peterlaflamme@comcast.net<= br> Subject: [SI-LIST] Ibis model Receiver help.

>
> Hi All,
> I have a differential receiver model which has an internal 100-ohm ser= ies
> resistor. However there is other circuitry between the P and N pins. C= an
> someone tell me if there is a way to use the [series resistor] keyword= to
> model this or is there another way to add this to the ibis model?
>

> Thanks,
> Peter
>

CONFIDENTIALITY NOTICE:= This e-mail message, including any attachments,
is for the sole use of the intended recipient(s) and contains information&n= bsp;
that is confidential and proprietary to AppliedMicro Corporation or its
subsidiaries.
It is to be used solely for the purpose of furthering the parties' business=
relationship.
All unauthorized review, use, disclosure or distribution is prohibited.
If you are not the intended recipient, please contact the sender by reply e-mail
and destroy all copies of the original message.


- ------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@freelists.= org with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http= ://www.freelists.org/webpage/si-list

For help:
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List technical documents are available at:
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Old (prior to June 6, 2001) list archives are viewable at:
               http://www.qsl.net/wb6= tpu

 

CONFIDENTIALITY NOTICE: This e-mail message, including any attachments=
, 
is for the sole use of the intended recipient(s) an=
d contains information 
that is confidential and =
proprietary to AppliedMicro Corporation or its subsidiaries. 
It is to be used solely for the purpose of furthering the parties' =
business relationship. 
All unauthorized review, use, =
disclosure or distribution is prohibited. 
If you are =
not the intended recipient, please contact the sender by reply e-mail =

and destroy all copies of the original message.=

 

--=20
This message has been scanned for viruses and
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believed to be clean. - ------=_NextPart_000_11A1_01CB7C04.8CAA5E40-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Mon, 25 Oct 2010 21:11:25 -0500 From: Sam Chitwood Subject: [IBIS-Users] Re: [IBIS]Define Package Model in IBIS - --20cf304353e277fb4004937ba107 Content-Type: text/plain; charset=ISO-8859-1 Hi Mr. Kim, Please see one of my earlier presentations on this topic. http://www.vhdl.org/pub/ibis/summits/feb08/chitwood.pdf Thanks, Sam 2010/10/25 jongwoon.kim@hynix.com > > Hi, all > > > > I would like to know how I can make [Define Package Model] section in IBIS > file, especially RLC matrix data. > > > > I need all the feedback I can get, e.g. making tool, generating method of > RLC matrix data, etc. > > > > Thank you in advance. > > -- > 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. - --20cf304353e277fb4004937ba107 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Mr. Kim,

Please see one of my earlier presentations on this topic= .
http://www.vhdl.org/pub/ibis/summits/feb08/chitwood.pdf
=
Thanks,
Sam



2010/10/25 jongwoon.kim@hynix.com <jongwoon.kim@hynix.com>

Hi, all

=A0

I would like to know=A0ho= w I can make=A0[Define Package Model] section in IBIS file, especially RLC = matrix data.

=A0

I need=A0all the feedback= I can get, e.g.=A0making tool, generating method of RLC matrix data, etc.<= /p>

=A0

Thank you in advance.

=

--=20
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.


--=20
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. - --20cf304353e277fb4004937ba107-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Fri, 22 Oct 2010 13:50:08 -0400 From: "Timothy Coyle" Subject: RE: [IBIS-Users] Bus Switch IBIS Models This is a multi-part message in MIME format. - ------=_NextPart_000_003E_01CB71F0.0B2142D0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit How about when the switch is in the Off state. Is there a situation where you need to simulate that with actual data such as [Series Current] or is [R Series] sufficient? Does the EDA tool just need a way to disable the switch in a batch mode type simulation? Thanks Tim From: Mike LaBonte [mailto:milabont@cisco.com] Sent: Friday, October 22, 2010 11:04 AM To: Arpad Muranyi; Timothy Coyle; IBIS Subject: Re: [IBIS-Users] Bus Switch IBIS Models More exactly, IBIS does not have time profile data to model the transition of a series switch between on and off states. It is certainly possible to convert the IBIS series switch model data to a circuit model using table elements, in which a control signal makes the switch transition dynamically from on to off and vice-versa. The switching time profile would have to be set by the control signal. I believe the Cadence implementation works this way, but I have heard of only one instance of someone using the capability (experimentally). I agree with Tim that automation of [Series Switch Groups] and on/off control at the EDA tool end is lacking. I think Tim is asking the right question, "does anyone really need it?" Mike On 10/22/10 10:25 AM, "Arpad Muranyi" wrote: Tim, IBIS doesn't support modeling the transitions between the On/Off state. The assumption is that this is not changing during simulations. There is no information in the models that describes how these devices would transition from one state to the other. We would need something like the V-t tables in order to do that, but they don't exist for this purpose. Arpad ======================================================================= From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Timothy Coyle Sent: Thursday, October 21, 2010 11:35 AM To: ibis-users@eda.org Subject: [IBIS-Users] Bus Switch IBIS Models Hi, When you have MOSFET switch and model it using [Series Mosfet] keyword in IBIS there are two ways to pin map it. The first way is to use [Model] Series and just use [Series Pin Mapping] and this assumes that the switch is always in On state. The other way is to use [Model] Series_switch with [Series Pin Mapping] and [Series Switch Groups] and this way there can be configured On and Off states. However I have found that most simulation/cad tools do not fully support [Series Switch Groups] without manual modification by end user. Modeling the switch as a Series device just Series Pin Mapping seems to be the default supported state. Has anyone else seen this issues of Series Switch Groups not being supported? Even when I do some modifications for a tool to support it many do not seem to use the Off state data. I would also be interested to hear of the simulation usage case where someone needs the ability to switch between On and Off states. Thanks, Timothy Coyle President Signal Consulting Group LLC 405 Western Ave #430 South Portland, ME 04106 Tel: 617.297.2566 Email: tim.coyle@siconsultant.com Web: http://www.siconsultant.com SharkSim - Signal Integrity IBIS Modeling Software - -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. - ------=_NextPart_000_003E_01CB71F0.0B2142D0 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Re: [IBIS-Users] Bus Switch IBIS Models

How about when the switch is in the Off state. Is there a situation where you need to simulate that with actual data such as [Series Current] or is [R Series] sufficient? Does the EDA tool just need a way to disable the switch in a batch mode type simulation?

 

Thanks

 

Tim

 

 <= /a>

From: Mike LaBonte [mailto:milabont@cisco.com]
Sent: Friday, October 22, 2010 11:04 AM
To: Arpad Muranyi; Timothy Coyle; IBIS
Subject: Re: [IBIS-Users] Bus Switch IBIS Models

 

More exactly, IBIS does not have time profile data to model the transition of a series switch between on and off states. It is certainly possible to convert the IBIS series switch model da= ta to a circuit model using table elements, in which a control signal makes the switch transition dynamically from on to off and vice-versa. The switching = time profile would have to be set by the control signal. I believe the Cadence implementation works this way, but I have heard of only one instance of som= eone using the capability (experimentally).

I agree with Tim that automation of [Series Switch Groups] and on/off contr= ol at the EDA tool end is lacking. I think Tim is asking the right question, “does anyone really need it?”

Mike

On 10/22/10 10:25 AM, "Arpad Muranyi" <Arpad_Muranyi@mentor.com> wrote:

Tim,
 
IBIS doesn’t support modeling the transitions between the On/Off stat= e.
The assumption is that this is not changing during simulations.  There=
is no information in the models that describes how these devices would
transition from one state to the other.  We would need something like<= br> the V-t tables in order to do that, but they don’t exist for this
purpose.
 
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=3D=3D=3D=3D=3D=3D=3D
 
=
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Timothy Coyle
Sent: Thursday, October 21, 2010 11:35 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Bus Switch IBIS Models
=
Hi,
When you have MOSFET switch and model it using [Series Mosfet] keyword in I= BIS there are two ways to pin map it. The first way is to use [Model] Series and just use [Series Pin Mapping] and this assumes that the switch is always in= On state. The other way is to use [Model] Series_switch with [Series Pin Mappi= ng] and [Series Switch Groups] and this way there can be configured On and Off states. However I have found that most simulation/cad tools do not fully su= pport [Series Switch Groups] without manual modification by end user. Modeling the switch as a Series device just Series Pin Mapping seems to be the default supported state.
 
Has anyone else seen this issues of Series Switch Groups not being supporte= d? Even when I do some modifications for a tool to support it many do not seem= to use the Off state data. I would also be interested to hear of the simulation usage case where someone needs the ability to switch between On and Off sta= tes.
 
Thanks,
 
Timothy Coyle
President
Signal Consulting Group LLC
405 Western Ave #430
South Portland, ME  04106
Tel: 617.297.2566
Email: tim.coyle@siconsultant.com <mailto:tim.coyle@siconsultant.co= m>
Web: http://www.siconsultant.com= <http://www.siconsultant.com/> =
Sh= arkSim <http://www.sharksim.com/> <= span style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>- Signal Integrity IBIS Modeling Software


--=20
This message has been scanned for viruses and
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believed to be clean. - ------=_NextPart_000_003E_01CB71F0.0B2142D0-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Tue, 02 Nov 2010 16:33:40 -0800 From: Bob Ross Subject: [IBIS-Users] Asian IBIS Summit (Japan) - Agenda All: Below is the agenda for the IBIS Summit Meeting in Tokyo. We are sending it out early to encourage final registration, if you have not already registered. Please bring your business card to serve as a name badge. To register, please provide the information below: Name: E-mail address: Company: Top-level Web Link: Country: Telephone: Send to BOTH: Bob ROSS, Teraspeed Consulting Group bob@teraspeed.com Atsushi ISHIKAWA, JEITA EC Center a-ishikawa@jeita.or.jp We look forward to seeing you at the meeting. Bob - ------------------------------------------------------------------ A S I A N I B I S S U M M I T I N F O R M A T I O N Time/Date: Monday November 15, 2010, 13:30 to 18:00 Meeting starts at 14:00 Location: JEITA Headquarters Ote Center Bldg. (new location for 2010) 1-1-3, Otemachi Chiyoda-ku Tokyo 100-0004 JAPAN http://www.jeita.or.jp/english/about/location/index.htm Organizational Sponsors: Japan Electronics and Information Technology Industries Association (JEITA) IBIS Open Forum Sponsors: ATE Service (Sigrity) Cadence Design Systems Zuken - ------------------------------------------------------------------ I B I S S U M M I T M E E T I N G A G E N D A 13:30 SIGN IN - Vendor Tables Open 14:00 Meeting Welcome Otake, Yasutaka (JEITA EC Center, Japan) Ross, Bob (Teraspeed Consulting Group, USA) 14:10 IBIS Progress and Activities Ross, Bob (Teraspeed Consulting Group, USA) 14:20 Size Matters - Recent Experiences with IBIS Files Bruening, Ralf and Schaeder, Martin (Zuken, Germany) 14:40 Point Reduction Method for IBIS Curves Wang, Lance (IO Methodology, USA) 15:05 IBIS Quality Framework Hamaji, Yoshihiro (Toshiba I.S. Corporation, Japan) 15:30 BREAK (Vendor Tables) 15:45 IBIS for SSO Analysis Wang, HaiSan; Lou, Joshua; Lin, Jack; and Zhong, ZhangMin (Sigrity, China) 16:15 Extending/Leveraging IBIS Constructs to Model High-Speed I/Os and Packages using AMI, Spice, and S-Parameters (Lin, John*; Al-Hawari, Feras**##; Kukal, Taranjit**#; and Varma, Ambrish**## (*Flextronic, China, and **Cadence Design Systems, #India and ##USA) 16:45 IBIS-ISS: What Is It and What It Means to You Mirmak, Michael (Intel Corporation, USA) 17:05 First Experiences in Dealing with ICEM (IC Emission) Models Bruening, Ralf (Zuken, Germany) 17:25 Model Connection Protocol Extensions for Mixed Signal SiP Kukal, Taranjit*#; Dia, WenLiang*##; Brim, Brad*; and Fujine, Eiji*** (*Cadence Design Systems, #India, ##China, **Sigrity, USA, and ***Fujitsu VLSI Limited, Japan) 17:55 Concluding Items 18:00 END OF MEETING - ------------------------------------------------------------------ - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Labs 121 North River Drive 13610 SW Harness Lane Narragansett, RI 02882 Beaverton, OR 97008 401-284-1827 503-430-1065 http://www.teraspeed.com 503-246-8048 Direct bob@teraspeed.com Teraspeed is a registered service mark of Teraspeed Consulting Group LLC - -- 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 ------------------------------ Date: Fri, 29 Oct 2010 13:33:04 -0700 From: Bob Ross Subject: [IBIS-Users] Asian IBIS Summit (Taiwan) - Agenda All: Below is the agenda for the IBIS Summit Meeting in Taipei. We are sending it out early to encourage registration. Many people have already registered, but we need all participants to register to plan for lunch and refreshments. Please bring your business card to serve as a name badge. To register, please provide the information below: Name: E-mail address: Company: Top-level Web Link: Country: Telephone: Send to BOTH: Bob Ross, Teraspeed Consulting Group bob@teraspeed.com Polin Chi, Sigrity polinchi@sigrity.com We look forward to seeing you at the meeting. Bob and Polin - ------------------------------------------------------------------ A S I A N I B I S S U M M I T I N F O R M A T I O N Time/Date: 8:00 - 16:30, Friday November 12, 2010 Location: Sherwood Hotel 111 Min Sheng E Road Sec.3, Taipei, Taiwan Rooms: Ballrooms I and II (Look for signs) Sponsors: Agilent Technologies Avant Technology (IO Methodology) Foxconn Technology Group ICT-Lanto Intel Corporation Sigrity Synopsys - ------------------------------------------------------------------ I B I S S U M M I T M E E T I N G A G E N D A 8:15 REFRESHMENTS & SIGN IN - Vendor Tables Open at 8:30 9:00 Welcome - Sogo Hsu (Foxconn Technology Group) - Michael Mirmak (Chair IBIS Open Forum, Intel Corporation) 9:20 Introducing IBIS Michael Mirmak (Intel Corporation) 9:35 Point Reduction Method for IBIS Curves Lance Wang (IO Methodology) 10:05 BREAK (Refreshments and Vendor Tables) 10:25 IBIS for SSO Analysis Haisan Wang, Joshua Luo, Jack Lin, and Zhangmin Zhong (Sigrity) 11:05 Correlating C_pin Capacitance with Measurements Randy Wolff (Micron Technology) 11:30 Enforced Passivity of S-parameter Sampled Frequency Data Wenliang Tseng, Sogo Hsu, Frank Y.C. Pai, and Scott C.S. Li (Foxconn Technology Group) 12:00 FREE BUFFET LUNCH (Hosted by Sponsors) - Vendor Tables 13:30 Automated AMI Model Generation & Validaton Jose Luis Pino*, Amolak Badesha*, Manuel Luschas**, Antonis Orphanou**, and Halil Civit** (*Agilent Technologies and **NetLogic Microsystems) 14:10 Extending/Leveraging IBIS Constructs to Model High-Speed I/Os and Packages using AMI, Spice, and S-Parameters (John Lin*, Feras Al-Hawari**, Taranjit Kukal**, and Ambrish Varma**, *Flextronic and **Cadence Design Systems) 14:40 BREAK (Refreshments and Vendor Tables) 15:00 IBIS-ISS: What Is It and What It Means to You Michael Mirmak (Intel Corporation) 15:30 Model Connection Protocol Extensions for Mixed Signal SiP Taranjit Kukal*, WenLiang Dai*, Brad Brim**, and Eiji Fujine*** (*Cadence Design Systems, **Sigrity, and ***Fujitsu VLSI Limited) 16:00 Concluding Items 16:30 END OF IBIS SUMMIT MEETING - ------------------------------------------------------------------ - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Labs 121 North River Drive 13610 SW Harness Lane Narragansett, RI 02882 Beaverton, OR 97008 401-284-1827 503-430-1065 http://www.teraspeed.com 503-246-8048 Direct bob@teraspeed.com Teraspeed is a registered service mark of Teraspeed Consulting Group LLC - -- 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 ------------------------------ Date: Wed, 27 Oct 2010 22:56:38 -0700 From: Bob Ross Subject: [IBIS-Users] Asian IBIS Summit (China) - Agenda All: Below is the agenda for the IBIS Summit Meeting in Shenzhen. We are sending it out early to encourage registration. Many people have already registered, but we need all participants to register to plan for lunch and refreshments. Please bring your business card to serve as a name badge. To register, please provide the information below: Name: E-mail address: Company: Top-level Web Link: Country: Telephone: Send to BOTH: Bob Ross, Teraspeed Consulting Group bob@teraspeed.com Lance Wang, IO Methology Inc. lwang@iometh.com We look forward to seeing you at the meeting. Bob and Lance - ------------------------------------------------------------------ A S I A N I B I S S U M M I T I N F O R M A T I O N Time/Date: 8:15 - 17:30, Tuesday November 9, 2010 Location: Four Points by Sheraton 5 Guihua Road Futian Free Trade Zone Shenzhen, Guangdong 518038 P. R. China Rooms: Shenzhen A (Look for signs) Sponsors: Huawei Technologies (Primary) Agilent Technologies Ansoft Cadence Design Systems Cybernet Systems Intel Corporation IO Methodology Mentor Graphics Corporation, Signal Integrity Software (SiSoft) Sigrity Synopsys ZTE Corporation - ------------------------------------------------------------------ I B I S S U M M I T M E E T I N G A G E N D A 8:15 REFRESHMENTS & SIGN IN - Vendor Tables Open at 8:30 9:15 Welcome - Li, JinJun (Huawei Technologies, China) - Mirmak, Michael (Chair, IBIS Open Forum, Intel Corporation, USA) 9:35 Point Reduction Method for IBIS Curves Wang, Lance (IO Methodology, USA) 10:05 BREAK (Refreshments and Vendor Tables) 10:25 IBIS for SSO Analysis Wang, HaiSan; Luo, Joshua; Lin, Jack; and Zhong, ZhangMin (Sigrity, China) 11:05 PDN Design and Analysis Methodology in SI&PI Co-design Luo, ZiPeng and Liu, SuYao (Huawei Technologies, China) 11:35 Correlating C_pin Capacitance with Measurements Wolff, Randy (Micron Technology, USA) 12:00 FREE BUFFET LUNCH (Hosted by Sponsors) - Vendor Tables 13:30 Automated AMI Model Generation & Validation Pino, Jose Luis*; Badesha, Amolak*; Luschas, Manuel**; Orpahanou, Antonis**; and Civit, Halil** (*Agilent Technologies and **NetLogic Microsystems, USA) 14:10 Spice Subcircuit Support for Serial Link Channel Design Using IBIS [External Model] Dong, XiaoQing*; Zhong, ZhangMin**#; and Willis, Ken**## (*Huawei Technologies, China and **Sigrity, #China, and ##USA) 14:40 Extending/Leveraging IBIS Constructs to Model High-Speed I/Os and Packages using AMI, Spice, and S-Parameters Lin, John*, Al-Hawari, Feras**##, Kukal, Taranjit**#, and Varma, Ambrish**## (*Flextronic, China, and **Cadence Design Systems, #India and ##USA) 15:10 BREAK (Refreshments and Vendor Tables) 15:30 IBIS-ISS: What Is It and What It Means to You Mirmak, Michael (Intel Corporation, USA) 16:00 Modeling Methods for Complex S-parameters in Touchstone 2.0 Guan, JinKu and Zhu, Shunlin (ZTE Corporation, China) 16:30 Model Connection Protocol Extensions for Mixed Signal SiP Kukal, Taranjit*#; Dai, WenLiang*##; Brim, Brad**; and Fujine, Eiji*** (*Cadence Design Systems, #India, ##China, **Sigrity, USA and ***Fujitsu VLSI Limited, Japan) 17:00 Concluding Items 17:30 END OF IBIS SUMMIT MEETING - ------------------------------------------------------------------ - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Labs 121 North River Drive 13610 SW Harness Lane Narragansett, RI 02882 Beaverton, OR 97008 401-284-1827 503-430-1065 http://www.teraspeed.com 503-246-8048 Direct bob@teraspeed.com Teraspeed is a registered service mark of Teraspeed Consulting Group LLC - -- 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 ------------------------------ Date: Wed, 3 Nov 2010 17:28:35 -0400 From: "Lance Wang" Subject: [IBIS-Users] RE: [SI-LIST] Ibis model Receiver help. Peter, If you have pure internal circuitry between the p and n pins, you can try to model the current within IBIS clamp data. Regards, Lance Wang 978-764-2298 IO Methodology Inc. www.iometh.com     - -----Original Message----- From: si-list-bounce@freelists.org [mailto:si-list-bounce@freelists.org] On Behalf Of Peter LaFlamme Sent: Wednesday, November 03, 2010 8:34 AM To: ibis@eda.org; ibis-users@eda.org; si-list@freelists.org; peterlaflamme@comcast.net Subject: [SI-LIST] Ibis model Receiver help. > > Hi All, > I have a differential receiver model which has an internal 100-ohm series > resistor. However there is other circuitry between the P and N pins. Can > someone tell me if there is a way to use the [series resistor] keyword to > model this or is there another way to add this to the ibis model? > > Thanks, > Peter > CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and contains information  that is confidential and proprietary to AppliedMicro Corporation or its subsidiaries. It is to be used solely for the purpose of furthering the parties' business relationship. All unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. - ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@freelists.org with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: http://www.freelists.org/webpage/si-list For help: si-list-request@freelists.org with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: http://www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu - -- 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 ------------------------------ Date: Tue, 26 Oct 2010 09:47:31 -0700 From: Bob Ross Subject: [IBIS-Users] Asian IBIS Summit (Japan) Fourth Announcement To All: The IBIS Open Forum will hold its fifth Asian IBIS Summit (Japan) Meeting on November 15 in Tokyo, Japan. The presentation submission deadline is moved up to November 1 due to meeting logistics. A list of planned presentations is shown below. JEITA (Japan Electronics and Information Technology Industries Association) is the primary event sponsor with several companies listed below acting as co-sponsors. The event will held at JEITA headquarters in Tokyo. Note that we are also holding two other Asian IBIS Summits: Shenzhen, China Tuesday, November 9, 2010 Taipei, Taiwan Friday, November 12, 2010 Bob Ross Teraspeed Consulting Group Atsushi Ishikawa JEITA EC Center - ----------------------------------------------------------------------- ASIAN IBIS SUMMIT (JAPAN) FOURTH CALL FOR PARTICIPATION AND PRESENTATIONS - ----------------------------------------------------------------------- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A S I A N I B I S S U M M I T ( J A P A N ) Time/Date: Monday November 15, 2010, 13:00 to 18:00 Meeting starts at 13:30 Location: JEITA Headquarters Ote Center Bldg. (new location for 2010) 1-1-3, Otemachi Chiyoda-ku Tokyo 100-0004 JAPAN http://www.jeita.or.jp/english/about/location/index.htm Content: Presentations and Discussions Purpose: Solicit and Exchange IBIS Model Related Information and Ideas. Organizational Sponsors: Japan Electronics and Information Technology Industries Association (JEITA) IBIS Open Forum Co-sponsors (in alphabetical order): ATE Service (Sigrity), Cadence Design Systems, and Zuken Cost: FREE, including refreshments Contact us for details regarding sponsorship BACKGROUND This year we holding the fifth Asian IBIS Summit (Japan) meeting. meeting. Several high-technology Japanese companies operate in Tokyo and are affiliated with JEITA and IBIS. Our objective is to reach out internationally to communicate with the local experts and to learn of regional concerns. CONFERENCE LANGUAGE The conference language is English, but we will plan for technical translations in English and in Japanese. Presenters may deliver in Japanese, but the presentation slides should be in English. IBIS SUMMIT This meeting will be conducted as a formal IBIS Summit Meeting. Presentations will be archived in an electronic format on our Summit site, and meeting minutes will be issued. However no formal decisions requiring votes will be planned. CALL FOR PARTICIPANTS People involved in IBIS model development, EDA tool development and digital circuit design are invited to participate in the Summit meeting. If you plan to participate, please register with the information below: Name: E-mail address: Company: Top-level Web Link: Country: Telephone: Send to BOTH: Bob ROSS, Teraspeed Consulting Group bob@teraspeed.com Atsushi ISHIKAWA, JEITA EC Center a-ishikawa@jeita.or.jp SIGNUP DEADLINE: November 10, 2010 Because of limited space, advance registration is required. CALL FOR PRESENTATIONS We are seeking presentations from individuals who have IBIS experiences or issues. Presentations from Asia are encouraged/ Presentation Format: LCD Projection from meeting laptop computer Time: 15-30 Minutes including questions Electronic Archival: All presentations will uploaded to our public IBIS Summit archives Electronic Format: Microsoft PowerPoint or Adobe PDF Presentation Copies: Available at the meeting for all attendees PRESENTATION DEADLINE: November 1, 2010 to produce meeting copies If you plan a presentation, please ADD to the above registration information: Title of Presentation: Estimated Time: (30 minutes or less) We will notify you of acceptance and may follow up with questions when we form the program agenda. Note: Vendor promotional or business information is prohibited. We review all submitted presentations and may request modifications. Submissions from Asia are encouraged. AGENDA (Tentative) 13:00 Sign in Asian IBIS Summit (Japan) 13:30 Presentations 15:30 Refreshments 15:45 Presentations 18:00 End of Meeting The specific agenda is being developed. We expect seven or eight presentations covering a range of issues from customer experiences, technical clarifications, and some of the future directions in IBIS. Tentative Program Titles and Topics: Toshiba I.S. Corporation IBIS Quality Framework Flextronics and Cadence Design Systems: Extending/Leveraging IBIS Constructs to Model High-Speed I/Os and Packages using AMI, Spice, and S-Parameters Intel Corporation: IBIS-ISS: What Is It and What It Means to You Cadence Design Systems, Sigrity, and Fujitsu VLSI Limited: Model Connection Protocol Extensions for Mixed Signal SiP Zuken First Experiences in Dealing with ICEM (IC Emission Models) or Size Matters - Recent Experiences with IBIS Files Teraspeed Consulting Group IBIS Projects and Activities topic ATE Service (Sigrity) To be determined LIST OF NEARBY HOTELS AND TRAVEL RULES Hotels in all price ranges can be found through internet searches. JEITA headquarters is located near the Tokyo Station (click image): http://www.jeita.or.jp/english/about/location/index.htm - ----------------------------------------------------------------- - -- Bob Ross Teraspeed Consulting Group LLC Teraspeed Labs 121 North River Drive 13610 SW Harness Lane Narragansett, RI 02882 Beaverton, OR 97008 401-284-1827 503-430-1065 http://www.teraspeed.com 503-246-8048 Direct bob@teraspeed.com Teraspeed is a registered service mark of Teraspeed Consulting Group LLC - -- 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 ------------------------------ Date: Tue, 26 Oct 2010 08:49:19 +0900 From: "jongwoon.kim@hynix.com" Subject: [IBIS-Users] [IBIS]Define Package Model in IBIS - --_000_F1F412B4683F494CA0C0015366185CC402CD33DDCDCMSMBOX04hyni_ Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 DQpIaSwgYWxsDQoNCg0KDQpJIHdvdWxkIGxpa2UgdG8ga25vdyBob3cgSSBj YW4gbWFrZSBbRGVmaW5lIFBhY2thZ2UgTW9kZWxdIHNlY3Rpb24gaW4gSUJJ UyBmaWxlLCBlc3BlY2lhbGx5IFJMQyBtYXRyaXggZGF0YS4NCg0KDQoNCkkg bmVlZCBhbGwgdGhlIGZlZWRiYWNrIEkgY2FuIGdldCwgZS5nLiBtYWtpbmcg dG9vbCwgZ2VuZXJhdGluZyBtZXRob2Qgb2YgUkxDIG1hdHJpeCBkYXRhLCBl dGMuDQoNCg0KDQpUaGFuayB5b3UgaW4gYWR2YW5jZS4NCgotLSAKVGhpcyBt ZXNzYWdlIGhhcyBiZWVuIHNjYW5uZWQgZm9yIHZpcnVzZXMgYW5kCmRhbmdl cm91cyBjb250ZW50IGJ5IE1haWxTY2FubmVyLCBhbmQgaXMKYmVsaWV2ZWQg dG8gYmUgY2xlYW4uCgo= - --_000_F1F412B4683F494CA0C0015366185CC402CD33DDCDCMSMBOX04hyni_ Content-Type: text/html; charset="ks_c_5601-1987" Content-Transfer-Encoding: quoted-printable

Hi, all

 

I would like to know = how I can make [Define Package Model] section in IBIS file, especially= RLC matrix data.

 

I need all the feedba= ck I can get, e.g. making tool, generating method of RLC matrix data, = etc.

 

Thank you in advance.

<= /div>
--=20
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. - --_000_F1F412B4683F494CA0C0015366185CC402CD33DDCDCMSMBOX04hyni_-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Wed, 27 Oct 2010 08:17:42 -0400 From: "Timothy Coyle" Subject: RE: [IBIS-Users] Bus Switch IBIS Models This is a multi-part message in MIME format. - ------=_NextPart_000_0012_01CB75AF.6E506440 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi Arpad, That was my assumption as well. It seems an [R Series] would be sufficient but I suppose with [Series Current] you could have the leakage current. For anyone interested I did put together a short article about IBIS switch modeling that can be found at http://www.sharksim.com/articles/ibis_analog_series_bus_switches.html. I tried to give a little background on analog switches and a couple of different ways you can model them in IBIS. The article is not complete yet as I still have some additional correlation data to add but it's a good start. Feel free to comment in this email thread or contact me off line. Thanks to everyone who responded on and off line Best Tim From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Muranyi, Arpad Sent: Monday, October 25, 2010 8:03 PM To: IBIS Subject: RE: [IBIS-Users] Bus Switch IBIS Models Tim, It all depends on the device, but in the off state I would not expect it to have any significant series current that you would need to model with [Series Current]. Series bus switches are usually in a fairly high impedance state when they are turned off. Arpad ======================================================= From: Timothy Coyle [mailto:tim.coyle@siconsultant.com] Sent: Friday, October 22, 2010 12:50 PM To: 'Mike LaBonte'; Muranyi, Arpad; 'IBIS' Subject: RE: [IBIS-Users] Bus Switch IBIS Models How about when the switch is in the Off state. Is there a situation where you need to simulate that with actual data such as [Series Current] or is [R Series] sufficient? Does the EDA tool just need a way to disable the switch in a batch mode type simulation? Thanks Tim From: Mike LaBonte [mailto:milabont@cisco.com] Sent: Friday, October 22, 2010 11:04 AM To: Arpad Muranyi; Timothy Coyle; IBIS Subject: Re: [IBIS-Users] Bus Switch IBIS Models More exactly, IBIS does not have time profile data to model the transition of a series switch between on and off states. It is certainly possible to convert the IBIS series switch model data to a circuit model using table elements, in which a control signal makes the switch transition dynamically from on to off and vice-versa. The switching time profile would have to be set by the control signal. I believe the Cadence implementation works this way, but I have heard of only one instance of someone using the capability (experimentally). I agree with Tim that automation of [Series Switch Groups] and on/off control at the EDA tool end is lacking. I think Tim is asking the right question, "does anyone really need it?" Mike On 10/22/10 10:25 AM, "Arpad Muranyi" wrote: Tim, IBIS doesn't support modeling the transitions between the On/Off state. The assumption is that this is not changing during simulations. There is no information in the models that describes how these devices would transition from one state to the other. We would need something like the V-t tables in order to do that, but they don't exist for this purpose. Arpad ======================================================================= From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Timothy Coyle Sent: Thursday, October 21, 2010 11:35 AM To: ibis-users@eda.org Subject: [IBIS-Users] Bus Switch IBIS Models Hi, When you have MOSFET switch and model it using [Series Mosfet] keyword in IBIS there are two ways to pin map it. The first way is to use [Model] Series and just use [Series Pin Mapping] and this assumes that the switch is always in On state. The other way is to use [Model] Series_switch with [Series Pin Mapping] and [Series Switch Groups] and this way there can be configured On and Off states. However I have found that most simulation/cad tools do not fully support [Series Switch Groups] without manual modification by end user. Modeling the switch as a Series device just Series Pin Mapping seems to be the default supported state. Has anyone else seen this issues of Series Switch Groups not being supported? Even when I do some modifications for a tool to support it many do not seem to use the Off state data. I would also be interested to hear of the simulation usage case where someone needs the ability to switch between On and Off states. Thanks, Timothy Coyle President Signal Consulting Group LLC 405 Western Ave #430 South Portland, ME 04106 Tel: 617.297.2566 Email: tim.coyle@siconsultant.com Web: http://www.siconsultant.com SharkSim - Signal Integrity IBIS Modeling Software - -- 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. - ------=_NextPart_000_0012_01CB75AF.6E506440 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Re: [IBIS-Users] Bus Switch IBIS Models

Hi Arpad,

That was my assumption as well. It seems an [R Series] would= be sufficient but I suppose with [Series Current] you could have the leakage current.

 

For anyone interested I did put together a short article abo= ut IBIS switch modeling that can be found at http://www.sharksim.com/articles/= ibis_analog_series_bus_switches.html. I tried to give a little background on analog switches and a couple of different ways you can model them in IBIS. The article is not complete yet = as I still have some additional correlation data to add but it's a good start. F= eel free to comment in this email thread or contact me off line.

 

Thanks to everyone who responded on and off line<= /span>

 

Best

 

Tim

 

 <= /a>

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of = Muranyi, Arpad
Sent: Monday, October 25, 2010 8:03 PM
To: IBIS
Subject: RE: [IBIS-Users] Bus Switch IBIS Models

 

Tim,

 

It all depends on the device, but in the off state I

would not expect it to have any significant series<= /span>

current that you would need to model with [Series <= /span>

Current].  Series bus switches are usually in a fairly

high impedance state when they are turned off…

 

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

 

 

From: Timothy Coyle [mailto:tim.coyle@siconsultant.com]
Sent: Friday, October 22, 2010 12:50 PM
To: 'Mike LaBonte'; Muranyi, Arpad; 'IBIS'
Subject: RE: [IBIS-Users] Bus Switch IBIS Models

 

How about when the switch is in the Off state. Is there a si= tuation where you need to simulate that with actual data such as [Series Current] o= r is [R Series] sufficient? Does the EDA tool just need a way to disable the swi= tch in a batch mode type simulation?

 

Thanks

 

Tim

 

 

From: Mike LaBonte [mailto:milabont@cisco.com]
Sent: Friday, October 22, 2010 11:04 AM
To: Arpad Muranyi; Timothy Coyle; IBIS
Subject: Re: [IBIS-Users] Bus Switch IBIS Models

 

More exactly, IBIS does not have time profile data to model the transition of a series switch between on and off states. It is certainly possible to convert the IBIS series switch model da= ta to a circuit model using table elements, in which a control signal makes the switch transition dynamically from on to off and vice-versa. The switching = time profile would have to be set by the control signal. I believe the Cadence implementation works this way, but I have heard of only one instance of som= eone using the capability (experimentally).

I agree with Tim that automation of [Series Switch Groups] and on/off contr= ol at the EDA tool end is lacking. I think Tim is asking the right question, “does anyone really need it?”

Mike

On 10/22/10 10:25 AM, "Arpad Muranyi" <Arpad_Muranyi@mentor.com> wrote:

Tim,
 
IBIS doesn’t support modeling the transitions between the On/Off stat= e.
The assumption is that this is not changing during simulations.  There=
is no information in the models that describes how these devices would
transition from one state to the other.  We would need something like<= br> the V-t tables in order to do that, but they don’t exist for this
purpose.
 
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=3D=3D=3D=3D=3D=3D=3D
 
=
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Timothy Coyle
Sent: Thursday, October 21, 2010 11:35 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Bus Switch IBIS Models
=
Hi,
When you have MOSFET switch and model it using [Series Mosfet] keyword in I= BIS there are two ways to pin map it. The first way is to use [Model] Series and just use [Series Pin Mapping] and this assumes that the switch is always in= On state. The other way is to use [Model] Series_switch with [Series Pin Mappi= ng] and [Series Switch Groups] and this way there can be configured On and Off states. However I have found that most simulation/cad tools do not fully support [Series Switch Groups] without manual modification by end user. Modeling the switch as a Series device just Series Pin Mapping seems to be = the default supported state.
 
Has anyone else seen this issues of Series Switch Groups not being supporte= d? Even when I do some modifications for a tool to support it many do not seem= to use the Off state data. I would also be interested to hear of the simulation usage case where someone needs the ability to switch between On and Off sta= tes.
 
Thanks,
 
Timothy Coyle
President
Signal Consulting Group LLC
405 Western Ave #430
South Portland, ME  04106
Tel: 617.297.2566
Email: tim.coyle@siconsultant.com <mailto:tim.coyle@siconsultant.co= m>
Web: http://www.siconsultant.com= <http://www.siconsultant.com/> =
Sh= arkSim <http://www.sharksim.com/> <= span style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>- Signal Integrity IBIS Modeling Software


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


--=20
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. - ------=_NextPart_000_0012_01CB75AF.6E506440-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Wed, 3 Nov 2010 08:37:03 -0700 From: "Tom Dagostino" Subject: [IBIS-Users] RE: [SI-LIST] Ibis model Receiver help. Peter This is one of those questions that has the "it depends" answer. What is the additional circuitry and which simulator are you trying to use are key elements that have a strong bearing on the answer. Regards, Tom Dagostino Teraspeed Labs 13610 SW Harness Lane Beaverton, OR 97008 503-430-1065 tom@teraspeed.com www.teraspeed.com Teraspeed Consulting Group LLC 121 North River Drive Narragansett, RI 02882 401-284-1827 www.teraspeed.com - -----Original Message----- From: si-list-bounce@freelists.org [mailto:si-list-bounce@freelists.org] On Behalf Of Peter LaFlamme Sent: Wednesday, November 03, 2010 5:34 AM To: ibis@eda.org; ibis-users@eda.org; si-list@freelists.org; peterlaflamme@comcast.net Subject: [SI-LIST] Ibis model Receiver help. > > Hi All, > I have a differential receiver model which has an internal 100-ohm series > resistor. However there is other circuitry between the P and N pins. Can > someone tell me if there is a way to use the [series resistor] keyword to > model this or is there another way to add this to the ibis model? > > Thanks, > Peter > CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and contains information  that is confidential and proprietary to AppliedMicro Corporation or its subsidiaries. It is to be used solely for the purpose of furthering the parties' business relationship. All unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. - ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@freelists.org with 'unsubscribe' in the Subject field or to administer your membership from a web page, go to: http://www.freelists.org/webpage/si-list For help: si-list-request@freelists.org with 'help' in the Subject field List technical documents are available at: http://www.si-list.net List archives are viewable at: http://www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu - -- 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 ------------------------------ Date: Wed, 27 Oct 2010 11:10:48 -0700 From: "Muranyi, Arpad" Subject: RE: [IBIS-Users] Bus Switch IBIS Models This is a multi-part message in MIME format. - ------_=_NextPart_001_01CB7602.48CD65F5 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Tim, =20 Nice article, I glanced over it enough to get a good impression, but not good enough to give you feedback... =20 Thanks, =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 =20 From: Timothy Coyle [mailto:tim.coyle@siconsultant.com]=20 Sent: Wednesday, October 27, 2010 7:18 AM To: Muranyi, Arpad; 'IBIS' Subject: RE: [IBIS-Users] Bus Switch IBIS Models =20 Hi Arpad, That was my assumption as well. It seems an [R Series] would be sufficient but I suppose with [Series Current] you could have the leakage current.=20 =20 For anyone interested I did put together a short article about IBIS switch modeling that can be found at http://www.sharksim.com/articles/ibis_analog_series_bus_switches.html. I tried to give a little background on analog switches and a couple of different ways you can model them in IBIS. The article is not complete yet as I still have some additional correlation data to add but it's a good start. Feel free to comment in this email thread or contact me off line. =20 Thanks to everyone who responded on and off line =20 Best =20 Tim =20 =20 From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Muranyi, Arpad Sent: Monday, October 25, 2010 8:03 PM To: IBIS Subject: RE: [IBIS-Users] Bus Switch IBIS Models =20 Tim, =20 It all depends on the device, but in the off state I would not expect it to have any significant series current that you would need to model with [Series=20 Current]. Series bus switches are usually in a fairly high impedance state when they are turned off... =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 =20 =20 From: Timothy Coyle [mailto:tim.coyle@siconsultant.com]=20 Sent: Friday, October 22, 2010 12:50 PM To: 'Mike LaBonte'; Muranyi, Arpad; 'IBIS' Subject: RE: [IBIS-Users] Bus Switch IBIS Models =20 How about when the switch is in the Off state. Is there a situation where you need to simulate that with actual data such as [Series Current] or is [R Series] sufficient? Does the EDA tool just need a way to disable the switch in a batch mode type simulation? =20 Thanks =20 Tim =20 =20 From: Mike LaBonte [mailto:milabont@cisco.com]=20 Sent: Friday, October 22, 2010 11:04 AM To: Arpad Muranyi; Timothy Coyle; IBIS Subject: Re: [IBIS-Users] Bus Switch IBIS Models =20 More exactly, IBIS does not have time profile data to model the transition of a series switch between on and off states. It is certainly possible to convert the IBIS series switch model data to a circuit model using table elements, in which a control signal makes the switch transition dynamically from on to off and vice-versa. The switching time profile would have to be set by the control signal. I believe the Cadence implementation works this way, but I have heard of only one instance of someone using the capability (experimentally). I agree with Tim that automation of [Series Switch Groups] and on/off control at the EDA tool end is lacking. I think Tim is asking the right question, "does anyone really need it?" Mike On 10/22/10 10:25 AM, "Arpad Muranyi" wrote: Tim, =20 IBIS doesn't support modeling the transitions between the On/Off state. The assumption is that this is not changing during simulations. There is no information in the models that describes how these devices would transition from one state to the other. We would need something like the V-t tables in order to do that, but they don't exist for this purpose. =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=3D=3D=3D=3D=3D=3D=3D =20 From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Timothy Coyle Sent: Thursday, October 21, 2010 11:35 AM To: ibis-users@eda.org Subject: [IBIS-Users] Bus Switch IBIS Models Hi, When you have MOSFET switch and model it using [Series Mosfet] keyword in IBIS there are two ways to pin map it. The first way is to use [Model] Series and just use [Series Pin Mapping] and this assumes that the switch is always in On state. The other way is to use [Model] Series_switch with [Series Pin Mapping] and [Series Switch Groups] and this way there can be configured On and Off states. However I have found that most simulation/cad tools do not fully support [Series Switch Groups] without manual modification by end user. Modeling the switch as a Series device just Series Pin Mapping seems to be the default supported state. =20 Has anyone else seen this issues of Series Switch Groups not being supported? Even when I do some modifications for a tool to support it many do not seem to use the Off state data. I would also be interested to hear of the simulation usage case where someone needs the ability to switch between On and Off states.=20 =20 Thanks, =20 Timothy Coyle President Signal Consulting Group LLC 405 Western Ave #430=20 South Portland, ME 04106 Tel: 617.297.2566 Email: tim.coyle@siconsultant.com =20 Web: http://www.siconsultant.com =20 SharkSim - Signal Integrity IBIS Modeling Software - --=20 This message has been scanned for viruses and=20 dangerous content by MailScanner , and is believed to be clean.=20 - --=20 This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. - ------_=_NextPart_001_01CB7602.48CD65F5 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Re: [IBIS-Users] Bus Switch IBIS Models

Tim,

 

Nice article, I glanced over it enough to get

a good impression, but not good enough to give

you feedback…

 

Thanks,

 

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

 

From: Timothy Coyle [mailto:tim.coyle@siconsultant.com]
Sent: Wednesday, October 27, 2010 7:18 AM
To: Muranyi, Arpad; 'IBIS'
Subject: RE: [IBIS-Users] Bus Switch IBIS Models

 

Hi Arpad,

That was my assumption as well. It seems an [R Series] would= be sufficient but I suppose with [Series Current] you could have the leakage current.

 

For anyone interested I did put together a short article abo= ut IBIS switch modeling that can be found at http://www.sharksim.com/articles/ibis_analog_series_bus_switches.html. I tr= ied to give a little background on analog switches and a couple of different wa= ys you can model them in IBIS. The article is not complete yet as I still have some additional correlation data to add but it's a good start. Feel free to comment in this email thread or contact me off line.

 

Thanks to everyone who responded on and off line<= /span>

 

Best

 

Tim

 

 <= /p>

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of = Muranyi, Arpad
Sent: Monday, October 25, 2010 8:03 PM
To: IBIS
Subject: RE: [IBIS-Users] Bus Switch IBIS Models

 

Tim,

 

It all depends on the device, but in the off state I

would not expect it to have any significant series<= /span>

current that you would need to model with [Series <= /span>

Current].  Series bus switches are usually in a fairly

high impedance state when they are turned off…

 

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

 

 

From: Timothy Coyle [mailto:tim.coyle@siconsultant.com]
Sent: Friday, October 22, 2010 12:50 PM
To: 'Mike LaBonte'; Muranyi, Arpad; 'IBIS'
Subject: RE: [IBIS-Users] Bus Switch IBIS Models

 

How about when the switch is in the Off state. Is there a si= tuation where you need to simulate that with actual data such as [Series Current] o= r is [R Series] sufficient? Does the EDA tool just need a way to disable the swi= tch in a batch mode type simulation?

 

Thanks

 

Tim

 

 

From: Mike LaBonte [mailto:milabont@cisco.com]
Sent: Friday, October 22, 2010 11:04 AM
To: Arpad Muranyi; Timothy Coyle; IBIS
Subject: Re: [IBIS-Users] Bus Switch IBIS Models

 

More exactly, IBIS does not have time profile data to model the transition of a series switch between on and off states. It is certainly possible to convert the IBIS series switch model da= ta to a circuit model using table elements, in which a control signal makes the switch transition dynamically from on to off and vice-versa. The switching = time profile would have to be set by the control signal. I believe the Cadence implementation works this way, but I have heard of only one instance of som= eone using the capability (experimentally).

I agree with Tim that automation of [Series Switch Groups] and on/off contr= ol at the EDA tool end is lacking. I think Tim is asking the right question, “does anyone really need it?”

Mike

On 10/22/10 10:25 AM, "Arpad Muranyi" <Arpad_Muranyi@mentor.com> wrote:

Tim,
 
IBIS doesn’t support modeling the transitions between the On/Off stat= e.
The assumption is that this is not changing during simulations.  There=
is no information in the models that describes how these devices would
transition from one state to the other.  We would need something like<= br> the V-t tables in order to do that, but they don’t exist for this
purpose.
 
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=3D=3D=3D=3D=3D=3D=3D
 
=
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Timothy Coyle
Sent: Thursday, October 21, 2010 11:35 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Bus Switch IBIS Models
=
Hi,
When you have MOSFET switch and model it using [Series Mosfet] keyword in I= BIS there are two ways to pin map it. The first way is to use [Model] Series and just use [Series Pin Mapping] and this assumes that the switch is always in= On state. The other way is to use [Model] Series_switch with [Series Pin Mappi= ng] and [Series Switch Groups] and this way there can be configured On and Off states. However I have found that most simulation/cad tools do not fully support [Series Switch Groups] without manual modification by end user. Modeling the switch as a Series device just Series Pin Mapping seems to be = the default supported state.
 
Has anyone else seen this issues of Series Switch Groups not being supporte= d? Even when I do some modifications for a tool to support it many do not seem= to use the Off state data. I would also be interested to hear of the simulation usage case where someone needs the ability to switch between On and Off sta= tes.
 
Thanks,
 
Timothy Coyle
President
Signal Consulting Group LLC
405 Western Ave #430
South Portland, ME  04106
Tel: 617.297.2566
Email: tim.coyle@siconsultant.com <mailto:tim.coyle@siconsultant.co= m>
Web: http://www.siconsultant.com= <http://www.siconsultant.com/> =
Sh= arkSim <http://www.sharksim.com/> <= span style=3D'font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>- Signal Integrity IBIS Modeling Software


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This message has been scanned for viruses and
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believed to be clean. - ------_=_NextPart_001_01CB7602.48CD65F5-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Thu, 4 Nov 2010 23:50:48 -0400 From: Andrew Ingraham Subject: [IBIS-Users] Re: Ibis model Receiver help. > I need to represent the AC coupling and termination > circuit. Why do you need to do that? Isn't it sufficient to represent how the receiver appears from the pins? Regards, Andy - -- 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 ------------------------------ Date: Fri, 12 Nov 2010 09:18:46 +0800 From: Yitong Wen Subject: [IBIS-Users] series model - --_000_AA48C7CA07CEC34E87C297DA8E353EF836456DDD57MAILAP2global_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi experts, I created an IBIS model for LVDS buffer, it can be enabled/disabled interna= l terminating resistor(100-ohm) by user Could you tell me how to include this function in an IBIS file? I edit the IBIS file as below(in red text): [Pin] signal_name model_name R_pin L_pin C_pin | 3 Anyp a_p 4 Anyn a_n 1 Vcc Power 2 GND GND | [Series Pin Mapping] pin_2 model_name function_table_group 3 4 terminate_diff 1 | [Series Switch Groups] | Function Group States |On 1 / Off 1 / |********************************************************************* | [Diff Pin] inv_pin vdiff tdelay_typ tdelay_min tdelay_max | 3 4 NA NA NA NA | |********************************************************************* [Model] terminate_diff Model_type Series | | variable R(typ) R(min) R(max) [R Series] 100ohm 99hm 101ohm | |********************************************************************* When running a syntax and IBIS parser check, there are errors as below: ERROR - Model terminate_diff: One of C_comp, C_comp_pullup, C_comp_pulldown= , C_comp_power_clamp, C_comp_gnd_clamp must be defined ERROR - Model 'terminate_diff': Pullup Reference Required when No Voltage R= ange is Specified ERROR - Model 'terminate_diff': Pulldown Reference Required when No Voltage= Range is Specified ERROR - Model 'terminate_diff': POWER Clamp Reference Required when No Volt= age Range is Specified ERROR - Model 'terminate_diff': GND Clamp Reference Required when No Voltag= e Range is Specified I wonder if the series model need this parameters? If yes, what are the parameters? Thanks Yitong - --=20 This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. - --_000_AA48C7CA07CEC34E87C297DA8E353EF836456DDD57MAILAP2global_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi experts,

I created an IBIS model for LVDS buffer, it can be enabled/disabled internal terminating resistor(100-ohm) by user

Could you tell me how to include this function in an IBIS file?=

I edit the IBIS file as below(in red text):

 

[Pin]    signal_name    model_name     R_pin        L_pin        C_pin

|

3     Anyp            a_p<= o:p>

4     Anyn            a_n<= o:p>

1     Vcc             Power

2     GND &nb= sp;           GND

|

[Series Pin Mapping] pin_2 model_name function_table_group

3 4 terminate_diff 1=

|

[Series Switch Groups]

| Function Group States

|On 1 /

Off 1 /

|*************************************************************= ********

|

[Diff Pin]   inv_pin  vdiff  tdelay_typ  tdelay_min  tdelay_max

|

3          &= nbsp;   4            &n= bsp; NA          NA          NA          NA

|

|*************************************************************= ********

[Model] terminate_diff

Model_type Series

|

| variable R(typ) R(min) R(max)

[R Series] 100ohm 99hm 101ohm

|

|*************************************************************= ********

 

When running  a syntax and IBIS parser check, there are errors as below:

 

ERROR - - Model terminate_diff: One of C_comp, C_comp_pullup, C_comp_pulldown, C_comp_power_clamp, C_comp_gnd_clamp must be defined

ERROR - - Model 'terminate_diff': Pullup Reference Required when No Voltage Range is Specified

ERROR - - Model 'terminate_diff': Pulldown Reference Required when No Voltage Range= is Specified

ERROR - - Model 'terminate_diff': POWER Clamp Reference Required when No Voltage Ra= nge is Specified

ERROR - - Model 'terminate_diff': GND Clamp Reference Required when No Voltage Rang= e is Specified

 

I wonder if the series model need this parameters?

If yes, what are the parameters?

 

Thanks

Yitong

 


--=20
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. - --_000_AA48C7CA07CEC34E87C297DA8E353EF836456DDD57MAILAP2global_-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Fri, 22 Oct 2010 11:03:55 -0400 From: Mike LaBonte Subject: Re: [IBIS-Users] Bus Switch IBIS Models > This message is in MIME format. Since your mail reader does not understand this format, some or all of this message may not be legible. - --B_3370590236_6800482 Content-type: text/plain; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable More exactly, IBIS does not have time profile data to model the transition of a series switch between on and off states. It is certainly possible to convert the IBIS series switch model data to a circuit model using table elements, in which a control signal makes the switch transition dynamically from on to off and vice-versa. The switching time profile would have to be set by the control signal. I believe the Cadence implementation works this way, but I have heard of only one instance of someone using the capability (experimentally). I agree with Tim that automation of [Series Switch Groups] and on/off control at the EDA tool end is lacking. I think Tim is asking the right question, =B3does anyone really need it?=B2 Mike On 10/22/10 10:25 AM, "Arpad Muranyi" wrote: > Tim, >=20=20 > IBIS doesn=B9t support modeling the transitions between the On/Off state. > The assumption is that this is not changing during simulations. There > is no information in the models that describes how these devices would > transition from one state to the other. We would need something like > the V-t tables in order to do that, but they don=B9t exist for this > purpose. >=20=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=3D=3D=3D=3D=3D=3D=3D >=20=20 >=20 > From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behal= f Of > Timothy Coyle > Sent: Thursday, October 21, 2010 11:35 AM > To: ibis-users@eda.org > Subject: [IBIS-Users] Bus Switch IBIS Models >=20=20 > Hi, > When you have MOSFET switch and model it using [Series Mosfet] keyword in= IBIS > there are two ways to pin map it. The first way is to use [Model] Series = and > just use [Series Pin Mapping] and this assumes that the switch is always = in On > state. The other way is to use [Model] Series_switch with [Series Pin Map= ping] > and [Series Switch Groups] and this way there can be configured On and Off > states. However I have found that most simulation/cad tools do not fully > support [Series Switch Groups] without manual modification by end user. > Modeling the switch as a Series device just Series Pin Mapping seems to b= e the > default supported state. >=20=20 > Has anyone else seen this issues of Series Switch Groups not being suppor= ted? > Even when I do some modifications for a tool to support it many do not se= em to > use the Off state data. I would also be interested to hear of the simulat= ion > usage case where someone needs the ability to switch between On and Off > states.=20 >=20=20 > Thanks, >=20=20 > Timothy Coyle > President > Signal Consulting Group LLC > 405 Western Ave #430 > South Portland, ME 04106 > Tel: 617.297.2566 > Email: tim.coyle@siconsultant.com > Web: http://www.siconsultant.com > SharkSim - Signal Integrity IBIS Modeling Sof= tware >=20=20 - --=20 This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. - --B_3370590236_6800482 Content-type: text/html; charset="ISO-8859-1" Content-transfer-encoding: quoted-printable Re: [IBIS-Users] Bus Switch IBIS Models More exactly, IBIS does not have time profile data to model the trans= ition of a series switch between on and off states. It is certainly possibl= e to convert the IBIS series switch model data to a circuit model using tab= le elements, in which a control signal makes the switch transition dynamica= lly from on to off and vice-versa. The switching time profile would have to= be set by the control signal. I believe the Cadence implementation works t= his way, but I have heard of only one instance of someone using the capabil= ity (experimentally).

I agree with Tim that automation of [Series Switch Groups] and on/off contr= ol at the EDA tool end is lacking. I think Tim is asking the right question= , “does anyone really need it?”

Mike

On 10/22/10 10:25 AM, "Arpad Muranyi" <Arpad_Muranyi@mentor.com> wrote:

Tim,
 
IBIS doesn’t support modeling the transitions between the On/Off stat= e.
The assumption is that this is not changing during simulations.  There=
is no information in the models that describes how these devices would
transition from one state to the other.  We would need something like<= BR> the V-t tables in order to do that, but they don’t exist for this
purpose.
 
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=3D=3D=3D=3D=3D=3D=3D
 

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Timothy = Coyle
Sent: Thursday, October 21, 2010 11:35 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Bus Switch IBIS Models
Hi,
When you have MOSFET switch and model it using [Series Mosfet] keyword in I= BIS there are two ways to pin map it. The first way is to use [Model] Serie= s and just use [Series Pin Mapping] and this assumes that the switch is alw= ays in On state. The other way is to use [Model] Series_switch with [Series= Pin Mapping] and [Series Switch Groups] and this way there can be configur= ed On and Off states. However I have found that most simulation/cad tools d= o not fully support [Series Switch Groups] without manual modification by e= nd user. Modeling the switch as a Series device just Series Pin Mapping see= ms to be the default supported state.
 
Has anyone else seen this issues of Series Switch Groups not being supporte= d? Even when I do some modifications for a tool to support it many do not s= eem to use the Off state data. I would also be interested to hear of the si= mulation usage case where someone needs the ability to switch between On an= d Off states.
 
Thanks,
 
Timothy Coyle
President
Signal Consulting Group LLC
405 Western Ave #430
South Portland, ME  04106
Tel: 617.297.2566
Email: tim.coyle@siconsultant.com <mailto= :tim.coyle@siconsultant.com>
Web: http://www.siconsu= ltant.com <= http://www.siconsultant.com/&g= t;
SharkSim <http://www.shar= ksim.com/> - Si= gnal Integrity IBIS Modeling Software

--=20
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. - --B_3370590236_6800482-- - -------------------------------------------------------------------- |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 ------------------------------ Date: Tue, 16 Nov 2010 10:07:42 +0800 From: Yitong Wen Subject: RE: [IBIS-Users] series model - --_000_AA48C7CA07CEC34E87C297DA8E353EF8364578D5B3MAILAP2global_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Arpad, Thanks for your great help! Yitong ________________________________ From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf = Of Muranyi, Arpad Sent: Monday, November 15, 2010 11:10 PM To: ibis-users@eda.org Subject: RE: [IBIS-Users] series model Yitong, Just add these two lines to your terminate_diff model: C_comp 0.0 NA NA [Voltage Range] 1.0V NA NA These two keywords are required by the IBIS specification, that's why you are getting the errors. You must use these keywords even if they don't make sense for the series model. I hope this helps, 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 From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf = Of Yitong Wen Sent: Thursday, November 11, 2010 7:19 PM To: 'ibis-users@eda.org' Subject: [IBIS-Users] series model Hi experts, I created an IBIS model for LVDS buffer, it can be enabled/disabled interna= l terminating resistor(100-ohm) by user Could you tell me how to include this function in an IBIS file? I edit the IBIS file as below(in red text): [Pin] signal_name model_name R_pin L_pin C_pin | 3 Anyp a_p 4 Anyn a_n 1 Vcc Power 2 GND GND | [Series Pin Mapping] pin_2 model_name function_table_group 3 4 terminate_diff 1 | [Series Switch Groups] | Function Group States |On 1 / Off 1 / |********************************************************************* | [Diff Pin] inv_pin vdiff tdelay_typ tdelay_min tdelay_max | 3 4 NA NA NA NA | |********************************************************************* [Model] terminate_diff Model_type Series | | variable R(typ) R(min) R(max) [R Series] 100ohm 99hm 101ohm | |********************************************************************* When running a syntax and IBIS parser check, there are errors as below: ERROR - Model terminate_diff: One of C_comp, C_comp_pullup, C_comp_pulldown= , C_comp_power_clamp, C_comp_gnd_clamp must be defined ERROR - Model 'terminate_diff': Pullup Reference Required when No Voltage R= ange is Specified ERROR - Model 'terminate_diff': Pulldown Reference Required when No Voltage= Range is Specified ERROR - Model 'terminate_diff': POWER Clamp Reference Required when No Volt= age Range is Specified ERROR - Model 'terminate_diff': GND Clamp Reference Required when No Voltag= e Range is Specified I wonder if the series model need this parameters? If yes, what are the parameters? Thanks Yitong - -- 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. - --=20 This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. - --_000_AA48C7CA07CEC34E87C297DA8E353EF8364578D5B3MAILAP2global_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Arpad,

Thanks for your great help!

 

Yitong

 

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Muranyi, Arpad
Sent: Monday, November 15, 2= 010 11:10 PM
To: ibis-users@eda.org
Subject: RE: [IBIS-Users] se= ries model

 

Yitong,

 

Just add these two lines to your terminate_diff model:

 

C_comp  0.0   NA = ; NA

[Voltage Range] 1.0V  NA  NA

 

These two keywords are required by t= he IBIS specification,

that’s why you are getting the errors.  You must use these

keywords even if they don’t ma= ke sense for the series model.

 

I hope this helps,=

 

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

 

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Yitong Wen
Sent: Thursday, November 11,= 2010 7:19 PM
To: 'ibis-users@eda.org'
Subject: [IBIS-Users] series= model

 

Hi e= xperts,

I cr= eated an IBIS model for LVDS buffer, it can be enabled/disabled internal terminating resistor(100-ohm) by user

Coul= d you tell me how to include this function in an IBIS file?

I ed= it the IBIS file as below(in red text):

 

[Pin]    signal_name    model_name     R_pin        L_pin        C_pin

|

3     Anyp            a_p<= o:p>

4     Anyn            a_n<= o:p>

1     Vcc             Power

2     GND         =     GND

|

[Series Pin Mapping] pin_2 model_name function_table_group<= /o:p>

3 4 terminate_diff 1

|

[Series Switch Groups]

| Function Group States

|On 1 /

Off 1 /

|***= ******************************************************************

|

[Diff Pin]   inv_pin  vdiff  tdelay_typ  tdelay_min  tdelay_max

|

3&nb= sp;             4            &n= bsp; NA          NA          NA          NA

|

|***= ******************************************************************

[Model] terminate_diff

Model_type Series

|

| variable R(typ) R(min) R(max)

[R Series] 100ohm 99hm 101ohm

|

|***= ******************************************************************

 

When running  a syntax and IBIS parser check, there are errors as below:

 

ERRO= R - Model terminate_diff: One of C_comp, C_comp_pullup, C_comp_pulldown, C_comp_power= _clamp, C_comp_gnd_clamp must be defined

ERRO= R - Model 'terminate_diff': Pullup Reference Required when No Voltage Range is Specif= ied

ERRO= R - Model 'terminate_diff': Pulldown Reference Required when No Voltage Range is Specified

ERRO= R - Model 'terminate_diff': POWER Clamp Reference Required when No Voltage Range is Specified

ERRO= R - Model 'terminate_diff': GND Clamp Reference Required when No Voltage Range is Specified

 

I wo= nder if the series model need this parameters?

If y= es, what are the parameters?

 

Than= ks

Yito= ng

 


- --
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.


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This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean. - --_000_AA48C7CA07CEC34E87C297DA8E353EF8364578D5B3MAILAP2global_-- - -------------------------------------------------------------------- |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 ------------------------------ End of ibis-users V1 #162 *************************