DATE: April 2, 1996 SUBJECT: 3/29/96 EIA IBIS Open Forum Minutes VOTING MEMBERS AND 1996 PARTICIPANTS LIST: AMP Hank Herrmann* Cadence Design C. Kumar* Contec CAE, Ltd. Dileep Divekar, Norio Matsui Cypress Bruce Wenniger Hewlett Packard, EEsof Karl Kachigan, Henry Wu HyperLynx Kellee Crisafulli INCASES Olaf Rethmeier Intel Corporation Stephen Peters*, Will Hobbs*, Arpad Muranyi*, John Keifer, Aaron Tang, Duane Quiet, Donald Telian, Jim Kruchowski Interconnectix, Inc. Bob Ross* Meta-Software (Les Spruiell) Mitsubushi Tam Cao Motorola Ahmed Omer* National Semiconductor Syed Huq*, Donald Snyder, Chune-Sin Yeh NCR (formerly ATT-GIS) Dave Moxley*, Richard Mellitz NEC (Hiroshi Matsumoto), Quad Design Jon Powell, Chris Rokusek* Quantic Labs (Mike Ventham) Tanner Research, Inc. (Scott Wedge) Texas Instruments Roger Cline, Ben Andresen, Sri Jandhyala, Tareq Shahwan, Dan Phipps Thomson-CSF/SCTF (Jean LeBrun) UniCAD Canada Ltd. Celso Faia* VLSI Technology Dick Ulmer, Sung Oh, Swami Gangadharan, Daniel Kim, Tom Dockery Zuken-Redac (John Berrie) OTHER PARTICIPANTS IN 1996: Alcatel John Fitzpatrick Altera Vadim von Brzeski Apteq Design System Dan FitzPatrick Compaq Mark Leonard Digital Equipment Corp. Jeff Chu* EIA Patti Rusher* IC Works Eric Chen Micron Technology Brian Johnson MicroSim Ralph Perez North Carolina State U. (Michael Steer) Oki Semiconductor Tom Chao Rockwell Collins Thomas Thurman* S3, Inc. Sarathy Sribhashyam, Phap Duong Seimans Nixdorf Arnaud Lacariere Tektronix, Inc. Brock Hannibal TRW & Free Model Foundation Robert Harrison Veribest/Integraph Ian Dodd*, David Wiens Zeelan Technology George Opsahl In the list above, attendees at the meeting are indicated by *. Principle members or other active members who have not attended are in parentheses. Upcoming Meetings: The bridge numbers for future IBIS teleconferences are as follows: Date Bridge Number Reservation # Passcode 4/19/96 (916) 356-9200 2-66106 5576848 5/10/96 (916) 356-9200 2-66109 4323275 All meetings are 8:00 AM to 9:55 AM Pacific Time. We try to have agendas out 7 days before each open forum and meeting minutes out within 7 days after. When you call into the meeting, ask for the IBIS Open Forum hosted by Will Hobbs and give the reservation number and passcode. NOTE: "AR" = Action Required. -------------------------------- MINUTES ------------------------------------- INTRODUCTIONS Ahmed Omer of Motorola in Austin, Texas joined primarily as "customer" of IBIS models. He is in a technology group within a semiconductor division and is involved in interconnect software issues as related to packages and boards. He is also interested in more Motorola internal visibility and involvement with IBIS. Tom Thurman from Rockwell Collins Avionics and Communications Division joined us at 9:00 AM. He introduced himself as the author of the ISO STEP AP210 (Electrical System Modeling) standard and a participant in the board layout/ standardization field for many years. He then presented an overview on Express. This discussion is captured in the technical section below. EIA MEMBERSHIP AND TREASURER'S REPORT Patti Rusher reported that Cypress Semiconductor is now a full EIA/IBIS Member. IBM (Austin) has decided not to renew the EIA membership. Patti reaffirmed that AMP is a full IBIS member. Jeff Chu of Digital Equipment and Ian Dodd of Veribest both indicated that they need the membership information for joining. No treasurer's report was given. MINUTES REPORT, MISC. Bob Ross reported that all AR's have been done, including inviting Tom Thurman for later discussions. MISCELLANY/ANNOUNCEMENTS Patti Rusher reported that EDIF 3 9 9 is undergoing formal letter ballot review prior to adoption as EDIF 4 0 0. She also mentioned that she was pleased to see the IBIS Spoken Here signs at the PCB Design Conference. PRESS AND WEB PAGE UPDATES In EDN, March 14, 1996, pg. 22 and EDN, March 28, 1996, pg. 87. both have new EDA tools introduction articles with abundant references to IBIS. AR - Patti Rusher on behalf of EIA write EDN that contrary to the March 28, 1996 article, IBIS has been formally ratified as an ANSI and EIA standard. NEW MODELS Bob Ross reports that VLSI has submitted a directory Michael Steer, although it has not been posted on vhdl.org yet. As reported last time, the models will still be available by sending a request to ibismodel@tempe.vlsi.com OPENS FOR NEW ISSUES Proposal for Encouraging more Semiconductor Model development from Syed Huq. EIA/IBIS 1996 MEMBERSHIP Bob Ross has sent reminders to members for paying fees. All have responded including some stating that fees have been paid. AR - Bob Ross continue working with Patti Rusher to monitor the payment for official EIA/IBIS Committee Membership. DAC STANDARDS BOOTH Patti Rusher stated that six committees will participate the DAC standards booth including EDIF and IBIS. The IBIS Committee cost will be $2500. There will be a back lit logo for EIA/IBIS. Because of uniformity in the booth the Velcro backed Company Logo board may have to be revised. She will work with Jon Powell concerning details. She can work with the logos in .gif format. Literature can be made available at the booth. Patti requested a poster briefly describing IBIS with about 10 bullet items. AR - Bob Ross work with Will Hobbs to prepare the list and give to Patti by Friday, April 5. Will Hobbs stated that "I Speak IBIS" badges will be provided by Jon Powell for DAC. One suggestion was "I Like IBIS" which brought memories of an old presidential campaign. ANSI/EIA-656 PUBLICATION Published version of the EIA/IBIS-656 have been mailed to members. The standard will also available through Global Engineering Documents. EIA WEB UPDATE Syed Huq reported that the EIA/IBIS home page has been updated with logo additions/changes including some new home page links with NCR (from AT&T), INCASES, Cadence, and Texas Instruments. Information from VLSI has not been received yet. Again Syed thanks EIA for their support. GOLDEN PARSER UPDATE Arpad Muranyi stated that Paul Munsey will drop off the updated IBISCHK2 parser disks which have 4 corrections documented under /pub/ibis/bugs on vhdl.org. Paul Munsey is to send the bill to EIA which we assume will be nominal. While the changes involved corrections and one very minor enhancement, ample review time has passed that we feel appropriate to provide reasonable compensation for such updates which involve enhancements since expenses are involved even for minor changes. This will be Version 2.1.11. AR - Bob Ross provide Will Hobbs a list of Version 2 Parser owners to check his list. - [Done] Will Hobbs will distribute the Parser. Jon Powell will need to create new executables, and Bob Ross will then put them on vhdl.org. SPICE TO IBIS VERSION 1.3 Bob Ross indicates that Steve Lipa has prepared a correction s2ibis Version 1.3 to be put on vhdl.org. Either Michael Steer will post it, or Bob Ross will post it if Michael is unavailable. The correction fixes a double counting problem in the [Pullup] table clamping region. SPICE TO IBIS VERSION 2.1 Bob Ross reported that the author at North Carolina State University Alan Glaser is studying for Ph.D. qualification exams and will be available for work after that in say a month. While problems have been reported directly, a list needs to be generated for visibility of what problems exist. Bob indicated that some "crashes" have been sent directly. Also there are some enhancements required consistent with the s2ibis version 1.3 coded that would differentiate an input voltage signal values and input threshold values. Currently [Vinl] and [Vinh] commands set both in s2ibis Beta Version 2.091, and this is wrong. AR - Bob Ross will prepare a list as soon as possible of s2ibis version 2.091 bugs. PLAN TO ENCOURAGE SEMICONDUCTOR MODELS Syed proposed a Most Models for the Year Reward to encourage publicly available IBIS Models to be given at DAC. Questions concerned whether those under NDA and those available through e-mail to the corporations that are free could be included. The award would be given at DAC where the participants would be available for presentation of the award. An awards committee might opt at this time anyone who is putting models on vhdl.org or in a publicly accessible Web site. Arpad Muranyi was concerned that small glue logic models might inflate the numbers versus larger pin count processor models. Bob Ross suggested that perhaps the focus of the award would be to the company rather than the individual to encourage and acknowledge company commitment. AR - Bob Ross put this as an agenda item for the April, 1996 meeting, and also plan that the award should be resolved by the May, 1996 meeting. Patti Rusher can help prepare the rewards. PRIORITIES FOR 1996 Will Hobbs reported the priorities that were established by a committee within Intel that relate to IBIS changes. They consist of Diode Kickback Feedback Sequential Drivers Voltage and Temperature parameterization Cookbook Update, particularly on DC versus AC impedance Improved Packaging Package Parasitics IBIS Models production (Intel has many IBIS model as a result of making it a procurement requirement) Ground Bounce/SSO/Scaling of Drivers/Multiple Outputs related Issues Will indicated that this list initiated by the Platform Architecture Lab closely resembled the IBIS committee priorities. TUTORIAL Patti Rusher stated that EDIF World was planning a tutorial in Monterey, California later this year and wondered if IBIS would also be interested in presenting a tutorial. EXPRESS Tom Thurman, from a Rockwell Collins Division in Cedar Rapids, Iowa has been involved with standards activities including information and data modeling. One piece of this work is Express. The Express format has been adopted internationally and nationally by EIA, EDIF and CFI. It is a more precise representation than English. Tom's feedback on fast tracking the IBIS proposal is that it should have an Express representation for better, more thorough review. The goals of the Express representation are 1) to make the language easy to understand, and 2) to design a language that can be interpreted and processed by a computer. There exists a graphical form called Express-G which helps newcomers become familiar with a new specification more easily. It is easy to create a lexical form from a graphical form and visa-versa. Once the Express representation is in place, it is easy to expand the scope of the specification and to show its interaction with other specifications. This helps attain the goal of cohesive standards. Express has the concept of base types (reals, integers, logicals), but is not concerned with specific computer implementations such as 32 bits, 64 bits, etc. It is similar to object orientated languages. In EDIF, there is a separate section for syntax guidance. The Express entity is similar to a C++ class, e.g., each having analogous attributes. Express-G shows relationships with boxes and lines. It provides a conceptual data model. It is a static data modeling language. Process and evens are not currently included. The relationships are object to object. Express lends itself to modular decomposition. In response to questions by Stephen Peters, Will Hobbs, Ian Dodd, C. Kumar, and others, Tom described Express as not a BNF or syntax description, but one that describes relationships. It was initially aimed at describing industrial data. He estimates 400-500 users in industry and academia including being taught at Clemson and UCLA. It has been adopted as the representation of EDIF 4 0 0. Express is still suitable for the non-syntactical aspects of IBIS and would not undermine the widespread acceptance of the current IBIS syntax. It provides the structure of the model and the rules and behavior of the data. Some constraints could also be included. The golden parser itself could be described using Express. Express provides an unambiguous description and also provides a method of communicating with parallel standards. Since Express is used as a representation in EDIF 4 0 0, Patti Rusher was asked to provide a simple illustrative example. AR - Patti Rusher post a simple example of Express representation. Tom concluded that Express can be used to describe physical files and that IBIS did not appear to require a large data model. BIRD33 (EGG8) - PHYSICAL PACKAGE DISCUSSION Stephen Peters recounted the separate committee meetings. The members consist of Stephen, C. Kumar, Ian Dodd, David Wiens, Jon Powell, Kellee Crisafulli, Olaf Rethmeier, and Werner Rissiek. The 19 March meeting established the goals that the proposal be human readable, easily parseable, handle SIMMs, resistors and capacitors, and polygons. They converged on the conclusion that the specification should be an existing standard, if possible, and may be a subset. The proposed EDIF 4 0 0 appears to be a good candidate. They are looking into CAD vendors to see who is supporting EDIF 4 0 0. The physical specification would be most useful for SIMMs and MCMs. The electrical side has similar goals. They considered Kumar's Spice-like description, an extension to BIRD28.3 which considers named matrices and eliminates [Number of Sections], and another description presented by Jon Powell based on Quad Design's experiences. The electrical specification would be most useful for PGAs. The next meeting is scheduled on April 4, 1996. Hank Herrmann wants to join the subcommittee. BIRD31.1 - MATED MODELS Bob Ross discussed the key points of BIRD31.1. The mated model (a generic term covering connectors, cables and sockets having two terminals) is blended into the package model with BIRD28.3 extensions and will track any changes resulting from future package proposals. It differs in that it introduces optional Cpad_1 and Cpad_2 default capacitor subparameters since most connector model information does not assume a pad capacitance. It will have two columns of pin numbers instead of one in the package model to allow different naming conventions on each side and to allow simple cable crossover. Finally, it is always in a separate .mmf and would not be in a .ibs file since it would be difficult to track having the same model in several .ibs files. BIRD34.1 (EGG9) - HANDLING STORED CHARGE Not covered. EGG10 - PARSER ADDITIONS FOR NUMERICAL CHECKING Not covered. NEXT MEETING: The next telephone meeting is set for Friday, April 19, 1996. ============================================================================== NOTES IBIS CHAIR: Will Hobbs (503) 264-4369, Fax (503) 264-4210 will_hobbs@ccm.jf.intel.com Server Chipset System Validation Manager, Intel Corp. 2111 NE 28th M/S JF1-57, Hillsboro, OR 97124 USA VICE CHAIR: Jon Powell (805) 988-8250, Fax: (805) 988-8259 jonp@qdt.com Transmission-Line Products Manager, Quad Design 1385 Del Norte Rd., Camarillo, CA 93010 SECRETARY: Bob Ross (503) 603-2523, fax (503) 639-3469 bob@icx.com Modeling Engineer, Interconnectix, Inc. 10220 SW Nimbus Ave, K4, Portland, OR 97223 This meeting was conducted in accordance with the EIA Legal Guides and EIA Manual of Organization and Procedure. The following e-mail addresses are used: ibis-request@vhdl.org To join, change, or drop from either the IBIS Open Forum Reflector (ibis@vhdl.org), the IBIS Users' Group Reflector (ibis-users@vhdl.org) or both. State your request. ibis-info@vhdl.org To obtain general information about IBIS, to ask specific questions for individual response, and to inquire about joining the EIA-IBIS Open Forum as a full Member. ibis@vhdl.org To send a message to the general IBIS Open Forum Reflector. This is used mostly for IBIS Standardization business and future IBIS technical enhancements. ibis-users@vhdl.org To send a message to the IBIS Users' Group Reflector. This is used mostly for IBIS clarification, current modeling issues, and general user concerns. ibischk-bug@vhdl.org To report ibischk2 parser bugs. The Bug Report Form Resides on vhdl.org in /pub/ibis/bugs/bugform.txt along with reported bugs. Information on IBIS technical contents, IBIS participants, and actual IBIS models are available on the IBIS Home page: http://www.eia.org/eig/ibis/ibis.htm Check the pub/ibis directory on vhdl.org for more information on previous discussions and results. You can get on via ftp anonymous, "guest" login from telnet or dial-in (415-335-0110), or send an e-mail request to the automatic archive server, archive@vhdl.org. "IBIS Spoken Here" placards are available from Jon Powell (jonp@qdt.com) for use at trade shows. ==============================================================================