IBIS Open Forum Minutes
Meeting Date: August 24, 2012
Meeting Location: Teleconference
VOTING MEMBERS AND 2012 PARTICIPANTS
Agilent Heidi Barnes, Radek Biernacki*, Yoji Sekine, Fangyi Rao
Altera David Banas*, Hsinho Wu, Masashi
Shimanouchi
ANSYS (Ansoft) Flavio Calvano, Luis Armenta, Dan Dvorscak
Applied Simulation Technology Norio Matsui
ARM (Nirav Patel)
Cadence Design Systems Brad Griffin, Terry Jernberg, Jilin Tan,
Dennis Nagle
Ambrish Varma
Ericsson Anders Ekholm, Zilwan Mahmod, Mattias
Lundquist
Foxconn Technology Group (Sogo Hsu)
Freescale (Jon Burnett)
IBM Adge Hawes*, Greg Edlund*
Infineon Technologies AG (Christian Sporrer)
Intel Corporation Michael Mirmak*, Subas Bastola, Udy Shrivastava,
Stewart Gilbert, Eddie Frie
IO Methodology Lance Wang
LSI Brian Burdick*
Maxim Integrated Products Hassan Rafat, Mahbubul Bari
Mentor Graphics Arpad Muranyi*, Vladimir Dmitriev-Zdorov
Micron Technology Randy Wolff, Aniello Viscardi, Francesco
Madonna
Antonio Prisco, Justin Butterfield
Nokia Siemens Networks GmbH Eckhard Lenski*, Evis Minga
Signal Integrity Software Walter Katz*, Mike LaBonte*, Todd
Westerhoff
Akalu Lentiro
Sigrity Raymond Chen, Yingxin Sun, Sam Chitwood
Ben Franklin, Srdjen Djordjevic
Synopsys Andy Tai, Scott Wedge, Hany Elhak, Ted Mido
Teraspeed Consulting Group Bob Ross*, Tom Dagostino
Texas Instruments Casey Morrison, Pegah Alavi, Valerie
Chang
Modesto Garcia, Karl Muth
Toshiba Masatoshi Abe
Xilinx Harry Fu
Zuken Michael Schaeder
OTHER PARTICIPANTS IN 2012
AMD (Nam Nguyen)
Apple Computer (Matt Herndon)
Aruba Networks Amir Motamedi
Avago Technologies Sanjeev Gupta, Amolak Badesha
Bayside Design Elliot Nahas
Cavium Johann Nittmann
Ciena Kaisheng (Klaus) Hu
Cisco Systems David Siadat, Mike Sapozhnikev
Enterasys Robert Haller
Exar Corporation Helen Nguyen
Granite River Labs Jiang Xu, Johnson Tan
Hewlett-Packard Ting Zhu
High Speed Design Center Ben Chia
Hitachi Yutaka Uematsu
Huawei Technologies Xiaoqing Dong
Instituto de Telecomunicações Wael Dghais, Hugo Teixeira
JEITA Atsushi Ishikawa
KEI Systems Shinichi Maeda
Luxshare-ICT Alan Kinningham, Steven Wong
MK Resolutions Olga Chervyakova
Nvidia Eric Hsu
Politecnico di Torino Stefano Grivet-Talocia
QLogic (James Zhou)
Research In Motion Yi Cao
Sony Kenji Yasoda
ST Microelectronics Davide Pandini
TechAmerica (Chris Denham)
Université de Brest Mihai Telescu, Cherif Diouf
University of Illinois Thomas Comberiate, José Schutt-Ainé
Vitesse Semiconductor Sirius Tsang
ZTE (Huang Min)
In the list above, attendees at the meeting are indicated by *. Principal
members or other active members who have not attended are in parentheses.
Participants who no longer are in the organization are in square brackets.
UPCOMING MEETINGS
The bridge numbers for future IBIS teleconferences are as follows:
Date Meeting Number Meeting Password
September 14, 2012 205 475 958 IBIS
For teleconference dial-in information, use the password at the following
website:
https://ciscosales.webex.com/ciscosales/j.php?J=205475958
All teleconference meetings are 8:00 AM to 9:55 AM US Pacific Time.
Meeting agendas are typically distributed seven days before each Open
Forum. Minutes are typically distributed within seven days of the
corresponding meeting. When calling into the meeting, follow the prompts
to enter the meeting ID. For new, local international dial-in numbers,
please reference the bridge numbers provided by Cisco Systems at the
following link:
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NOTE: "AR" = Action Required.
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INTRODUCTIONS AND MEETING QUORUM
No new participants.
CALL FOR PATENTS
Michael Mirmak called for any patents or pending patents related to the
IBIS 3.2, IBIS 4.2, IBIS 5.0, Touchstone 2.0 or ICM 1.1 specifications. No
patents were declared.
REVIEW OF MINUTES AND ARS
Mike LaBonte called for comments regarding the minutes of the August 3,
2012 IBIS Open Forum teleconference. The minutes were approved without
changes.
MEMBERSHIP STATUS AND TREASURER'S REPORT
Bob Ross reported that we have 26 officially paid members, but we should
have one or two more membership confirmations from TechAmerica next week.
Michael Mirmak speculated about what our membership break-even point might
be. Bob indicated that due to re-organizations we no longer have a monthly
charge rate to TechAmerica. With parser sales, (each sale of $2,500
offsetting almost three memberships) we should be close to breaking even.
Bob said that parser sales should be targeted to parser development
contracts. He will work with Michael off-line to update the parser
invoicing and payment status for 2012.
WEB PAGE UPDATES
Mike LaBonte reported that the roster and poster pages have been updated to
drop AMD, Apple, and Cisco as members. ARM has been added. An updated logo
image was received from Zuken.
MAILING LIST ADMINISTRATION
Mike LaBonte reported that recent email list problems are largely resolved
and the lists are passing traffic. Emails from Walter Katz still fail to
reach the list and Mike continues to work with eda.org support to fix this.
Anyone who believes they are not receiving list email or is unable to send
email to either list should contact Mike. Michael Mirmak expressed
appreciation for the significant efforts to resolve this problem.
MODEL LIBRARY UPDATE
Michael Mirmak reported that Anders Ekholm is not present and there is no
update.
MISCELLANY/ANNOUNCEMENTS
None.
CALL FOR NEW ISSUES
None.
INTERNATIONAL/EXTERNAL ACTIVITIES
- IEEE DASC
Michael Mirmak reported that there will be a meeting September 2. The
previous meeting was canceled. No IBIS-related issues are on the agenda for
the next meeting.
- VHDL-AMS Table-Driven Models
Arpad Muranyi reported that they are implementing code for table driven
models now. Hopefully progress is being made. Michael Mirmak asked if there
is a web URL for the minutes. Arpad said the URL already in the minutes is
still the best one.
More information can be found at:
http://www.eda.org/twiki/bin/view.cgi/P10761/ProjectsArea#Table_driven_
Modeling_Champion_J
- Conferences
- Michael Mirmak reported that EPEPS (21st IEEE Conference on Electrical
Performance of Electronic Packaging and Systems) will be held October 21-
24, 2012 in Tempe, Arizona. This event occasionally includes IBIS-related
content. More information can be found at:
http://epeps.ece.illinois.edu/
Official IBIS participation may/may not be planned for all of the events
above, though individual papers and discussion on IBIS are encouraged.
These are events with refereed submissions, with deadlines either pending
or already passed.
- Press Update
None.
IEC APPROVAL ACTIVITIES
Michael Mirmak said a replacement organization for TC93 would be identified
sometime in September. We need to establish which group is responsible for
IBIS, for us to pursue ANSI standardization issues.
SUMMIT STATUS
Michael Mirmak thanked Bob Ross for his efforts to organize. Bob will be
sending additional sponsor information to Mike LaBonte for the web page.
Presentations must be ready October 5 and 9 for the Shanghai and Hsinchu
conferences, respectively. Michael said having presentations earlier or at
least knowing titles in advance helps us to plan. Bob said we expect over
100 people at each event.
-Asian IBIS Summit – Shanghai, November 9
Bob indicated that the second announcement would go out after the meeting.
Bob also stated that the co-sponsors are Huawei Technologies (primary),
Agilent Technologies, ANSYS, Cadence Design Systems, Intel Corporation, IO
Methodology, Synopsys, and ZTE Corporation.
-Asian IBIS Summit – Hsinchu, November 13
Bob reported that the co-sponsors so far for this summit are ANSYS
(primary), Agilent Technologies, Cadence Design Systems, Intel Corporation,
and IO Methodology.
-Asian IBIS Summit – Yokohama, November 16
Bob reported that an announcement for the Yokohama conference will be
prepared soon.
Michael noted that sponsorship opportunities for all upcoming IBIS summits
are available, with sponsors receiving free mentions in the minutes,
agenda, and other announcements. This includes upcoming events in Asia.
Michael suggested that this is a great opportunity to contact IBIS members.
Contact the IBIS Board for further details.
QUALITY TASK GROUP
Mike LaBonte reported the group has looked at the correlation figure of
merit formula from the IBIS Accuracy handbook. Certain waveform deviations
are able to give FOM percentages that are unintuitively high or low. The
group intends to pursue improvements to the FOM. Work on an AMI quality
checklist will also resume, now that IBIS 5.1 is no longer in flux and now
that we have a pretty good handle on what the related parser changes are.
Michael Mirmak asked if Feature Selective Validation (FSV) was still under
consideration. Mike said that IEEE style frequency domain FSV has been
taken off the table, but time domain FSV as proposed by David Banas and Roy
Leventhal continues to be discussed.
The Quality Task Group checklist and other documentation can be found at:
http://www.eda.org/ibis/quality_wip/
ADVANCED TECHNOLOGY MODELING TASK GROUP
Arpad Muranyi reported that Walter Katz has given a series of presentations
regarding package and related modeling. They are entertaining new ideas but
will have to make some decision soon. BIRDs will be needed.
Task group material can be found at:
http://www.eda.org/ibis/macromodel_wip/
EDITORIAL TASK GROUP
Michael Mirmak reported that IBIS 5.1 is ready for voting today. We need to
finalize the new BIRD template.
The task group documents can be reviewed at:
http://www.eda.org/ibis/editorial_wip/
NEW ADMINISTRATIVE ISSUES
None.
IBIS 5.1 SPECIFICATION
Michael Mirmak noted that at the request of Bob Ross this agenda item has
been moved to the front of the technical session. Bob Ross noted that some
offline comments have been received. Michael said we will go over those.
Changes have been posted to the website. Some changes are not yet listed
but will be shown today. Michael showed a list of changes from draft 1 to
draft 2 as well as a side-by-side difference window showing draft 3
changes, based on comments from Walter Katz and Bob.
Michael read the changes from draft 1 to draft 2. The hierarchy diagram has
frequently been corrupted by editing tools, possibly due to the use of
ellipses. This has been addressed by removing the ellipses. AMI_Version
will be treated as a string type, even though it appears as a number. Some
examples were fixed to comply with rules.
Michael described the side-by-side draft 2 to draft 3 changes. The
hierarchy diagram no longer has ellipses, which were not really needed.
Radek Biernacki asked if the underlining of top level keywords in the
diagram is really necessary. Michael said these could be removed, but there
was concern about the effects on formatting and no decision was taken at
the moment. For AMI_Version, values like 5.1.0 will not be legal even
though it is a string. The Model_Specific example has been moved to a
better location. Several improvements were made to the Tap example.
Michael issued the final call for comments on the IBIS 5.1 specification.
Arpad Muranyi moved to vote on approval of the draft 3 specification with
changes as discussed. Bob seconded the motion. Radek Biernacki asked if
we can vote at this time considering recent changes. Michael said that
Arpad’s formulation of the motion correctly incorporates recent comments.
There was no formal objection. The vote passed with the following vote
tally:
Agilent Technologies yes
Altera yes
IBM yes
Intel Corp. yes
LSI yes
Mentor Graphics yes
Micron Technology yes (by email to Michael Mirmak)
Nokia Siemens Networks yes
Signal Integrity Software yes
Teraspeed Consulting yes
Bob noted that there has been a 4 year span from IBIS 5.0, approved Aug 29,
2008. The IBIS 5.1 specification document and the comments list can be
viewed at:
http://www.eda.org/ibis/ver5.1_wip/
Bob made a motion to move up the bug and parser agenda items. Mike LaBonte
seconded. There were no objections.
IBISCHK5 PARSER STATUS AND BUG STATUS
Bob Ross reported that the parser development work has been comprehensive,
and it has been adhering well to IBIS 5.1 already. BUG131 will be closed
even though the bug is not completely correct in formulation. The developer
has been asked to consider addressing BUG133, but this is not certain. The
parser will be changed to enforce a rule against repeated items at the same
level. This should yield a 5.1 compliant parser. The work will take about a
month or less. Bob said it does not yet check for multiple AMI Description
items at the same branch level, and asked if that should be a WARNING or
ERROR. Walter Katz said that should be an ERROR. Radek Biernacki agreed.
Bob is not sure we can have BUGs 132 and 133 addressed at this time.
IBIS SPECIFICATION CHANGE STATUS
Michael Mirmak showed the BIRD list and said the right column would be
updated to show which ones are incorporated into 5.1. An updated change
list would be ready for the next teleconference.
Michael asked if any untabled BIRDs have been changed. Arpad Muranyi said
they had not. These BIRDs were on hold until 5.1 was approved. Arpad said
that the plan was to convert the BIRDs to the new format as necessary after
v5.1 was ratified, but given recent presentations by Walter Katz they were
not yet ready to begin that.
BIRD116.1: ADD IBIS-ISS TO [EXTERNAL MODEL] AND [EXTERNAL CIRCUIT] AS A
SUPPORTED LANGUAGE
No discussion.
BIRD117.4: PARAMETERIZE A_TO_D AND D_TO_A CONVERTERS
No update.
BIRD118.3: ANALOG PARAMETER ASSIGNMENTS
No update.
BIRD129: ADD “POLARITY†ARGUMENT TO D_TO_A CONVERTERS
No update.
BIRD153: PARAMETER TREE KEYWORD
No update.
BIRD121.1: IBIS-AMI NEW RESERVED PARAMETERS FOR DATA MANAGEMENT
Discussion was tabled.
BIRD122: IBIS-AMI NEW RESERVED PARAMETERS FOR ANALOG MODELING
Discussion was tabled.
BIRD123.3: IBIS-AMI NEW RESERVED PARAMETERS FOR JITTER/NOISE
No update.
BIRD125.1: MAKE IBIS-ISS AVAILABLE FOR IBIS PACKAGE MODELING
Discussion was tabled.
BIRD128: ALLOW AMI_PARAMETERS_OUT TO PASS AMI_PARAMETERS_IN DATA ON CALLS
TO AMI_GETWAVE
Discussion was tabled.
BIRD 131: IBIS-AMI REPEATERS
Discussion was tabled.
BIRD144.3: ADD TOUCHSTONE TO [EXTERNAL MODEL] AND [EXTERNAL CIRCUIT] AS A
SUPPORTED LANGUAGE
Discussion was tabled.
BIRD145.2: CASCADING IBIS I/O BUFFERS WITH [EXTERNAL CIRCUIT]S USING THE
[MODEL CALL] KEYWORD
Discussion was tabled.
BIRD147: BACK-CHANNEL SUPPORT
Discussion was tabled.
BIRD150: IBIS-AMI NEW RESERVED PARAMETERS FOR DEPENDENCY TABLES
Discussion was tabled.
NEW TECHNICAL ISSUES
Walter Katz showed a presentation “New Approach for Implementing IBIS-ISS
for Package, Module, Connector, Cable, and External Modelâ€. He will send
this to Mike LaBonte for posting to the IBIS website. The presentation
gives an overview of historical interconnect model formats and presents a
proposal to address all needs using one basic format.
On slide 8 Radek Biernacki asked if power and ground would be covered.
Walter said the example shows those nets but more data might be needed to
show the full syntax. On slide 12 Walter noted that the example EBD shown
has Gd and Rs values in comments, which EBD does not support. Slide 15
shows that loss data are important for accuracy at higher frequencies. On
slide 19 Walter noted that connector vendors tend to deliver multi-wafer
slice models more often than full models. On slide 20 Walter said Arpad
Muranyi’s proposal regarding macros might be considered. On slide 21 Greg
Edlund noted that the parameters seem to be about a buffer circuit, but it
looks like the package model. Walter said that the syntax for interconnect
and buffer models were similar but are contextually different. Walter
described the additional stimulus parameters and said they replace the IBIS
D_to_A converter syntax. He clarified that many of these needs have common
elements. On slide 23 Walter proposed that we should:
• Reject BIRDs 116, 117, 118, 122, 125, 129, 144, 145, 152 and 153.
• Generate BIRDs to implement the described syntax using IBIS-ISS.
• Generate BIRDs to implement the described syntax using IBIS-BSS for
buffers.
• Create an EMD section in IBIS 6.0.
• Consider splitting certain sections into separate documents for IBIS
6.0.
Walter clarified that this was not currently a formal motion, and it would
be discussed in ATM meetings. Arpad noted that given the large scale
changes proposed in Walter’s presentation we might want to address a few
other fundamentally incorrect things in IBIS, such as its pin centric
nature. Associating buffer calls directly with pins does not make sense now
that package and on-die interconnect models are more complicated. Buffers
should be associated with a point/node on the die. Walter said it might be
easier to put this in a separate EMD file. Arpad disagreed and suggested
that the future direction of IBIS should be discussed in the Open Forum at
large before the details of BIRDs are discussed in the ATM group.
NEXT MEETING
The next IBIS Open Forum teleconference will be held September 14, 2012
from 8:00 to 10:00 AM US Pacific Time, and then on October 5, 2012.
David Banas moved to adjourn. Radek Biernacki seconded. There were no
objections.
========================================================================
NOTES
IBIS CHAIR: Michael Mirmak (916) 356-4261, Fax (916) 377-3788
michael.mirmak@intel.com
Data Center Platform Applications Engineering
Intel Corporation
FM5-239
1900 Prairie City Rd.,
Folsom, CA 95630
VICE CHAIR: Lance Wang (978) 633-3388
lwang@iometh.com
President/CEO, IO Methodology, Inc.
PO Box 2099
Acton, MA 01720
SECRETARY: Randy Wolff (208) 363-1764, Fax: (208) 368-3475
rrwolff@micron.com
SI Modeling Manager, Micron Technology, Inc.
8000 S. Federal Way
Mail Stop: 01-711
Boise, ID 83707-0006
LIBRARIAN: Anders Ekholm (46) 10 714 27 58, Fax: (46) 8 757 23 40
ibis-librarian@eda.org
Digital Modules Design, PDU Base Stations, Ericsson AB
BU Network
Färögatan 6
164 80 Stockholm, Sweden
WEBMASTER: Mike LaBonte
mikelabonte@eda.org
IBIS-AMI Modeling Specialist, Signal Integrity Software
6 Clock Tower Place
Maynard, MA 01754
POSTMASTER: Mike LaBonte
mikelabonte@eda.org
IBIS-AMI Modeling Specialist, Signal Integrity Software
6 Clock Tower Place
Maynard, MA 01754
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IBIS – TECHAMERICA STANDARDS BALLOT VOTING STATUS
I/O Buffer Information Specification Committee (IBIS)
|Organization |Interest |Standar|June |July |August |August |
| |Category |ds |22, |13, |3, 2012|24, |
| | |Ballot |2012 |2012 | |2012 |
| | |Voting | | | | |
| | |Status | | | | |
|Agilent |User |Active |- |X |X |X |
|Technologies | | | | | | |
|Altera |Producer |Active |X |- |X |X |
|ANSYS |User |Active |X |X |X |- |
|Applied Simulation|User |Inactiv|- |- |- |- |
|Technology | |e | | | | |
|ARM |Producer |Inactiv|- |- |- |- |
| | |e | | | | |
|Cadence Design |User |Active |X |X |X |- |
|Systems | | | | | | |
|Ericsson |Producer |Inactiv|- |- |- |- |
| | |e | | | | |
|Foxconn Technology|Producer |Inactiv|- |- |- |- |
|Group | |e | | | | |
|Freescale |Producer |Inactiv|- |- |- |- |
| | |e | | | | |
|IBM |Producer |Inactiv|- |- |- |X |
| | |e | | | | |
|Infineon |Producer |Inactiv|- |- |- |- |
|Technologies AG | |e | | | | |
|Intel Corp. |Producer |Active |X |X |X |X |
|IO Methodology |User |Active |X |X |X |- |
|LSI |Producer |Active |- |- |X |X |
|Maxim Integrated |Producer |Inactiv|- |- |- |- |
|Products | |e | | | | |
|Mentor Graphics |User |Active |X |X |X |X |
|Micron Technology |Producer |Active |X |X |X |- |
|Nokia Siemens |Producer |Active |X |X |- |X |
|Networks | | | | | | |
|Signal Integrity |User |Active |X |X |X |X |
|Software | | | | | | |
|Sigrity |User |Inactiv|- |- |- |- |
| | |e | | | | |
|Synopsys |User |Inactiv|- |- |- |- |
| | |e | | | | |
|Teraspeed |General |Active |- |X |X |X |
|Consulting |Interest | | | | | |
|Texas Instruments |Producer |Inactiv|- |- |- |- |
| | |e | | | | |
|Toshiba |Producer |Inactiv|- |- |- |- |
| | |e | | | | |
|Xilinx |Producer |Inactiv|- |- |- |- |
| | |e | | | | |
|Zuken |User |Inactiv|- |- |- |- |
| | |e | | | | |
Criteria for Member in good standing:
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Interest categories associated with TechAmerica ballot voting are:
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