IBIS Macromodel Task Group Meeting date: 9 March 2010 Members (asterisk for those attending): Adge Hawes, IBM * Ambrish Varma, Cadence Design Systems * Anders Ekholm, Ericsson * Arpad Muranyi, Mentor Graphics Corp. Barry Katz, SiSoft * Bob Ross, Teraspeed Consulting Group Brad Brim, Sigrity Brad Griffin, Cadence Design Systems Chris Herrick, Ansoft Chris McGrath, Synopsys Danil Kirsanov, Ansoft David Banas, Xilinx Deepak Ramaswany, Ansoft Donald Telian, consultant Doug White, Cisco Systems Eckhard Lenski, Nokia-Siemens Networks Eckhard Miersch, Sigrity Essaid Bensoudane, ST Microelectronics * Fangyi Rao, Agilent Ganesh Narayanaswamy, ST Micro Gang Kang, Sigrity Hemant Shah, Cadence Design Systems Ian Dodd, consultant Jerry Chuang, Xilinx Joe Abler, IBM John Angulo, Mentor Graphics John Shields, Mentor Graphics * Ken Willis, Sigrity Kumar Keshavan, Sigrity Lance Wang, Cadence Design Systems Luis Boluna, Cisco Systems Michael Mirmak, Intel Corp. * Mike LaBonte, Cisco Systems Mike Steinberger, SiSoft Mustansir Fanaswalla, Xilinx Patrick O'Halloran, Tiburon Design Automation Paul Fernando, NCSU Pavani Jella, TI Radek Biernacki, Agilent (EESof) * Randy Wolff, Micron Technology Ray Komow, Cadence Design Systems Richard Mellitz, Intel Richard Ward, Texas Instruments Samuel Mertens, Ansoft Sam Chitwood, Sigrity Sanjeev Gupta, Agilent Shangli Wu, Cadence Design Systems Sid Singh, Extreme Networks Stephen Scearce, Cisco Systems Steve Kaufer, Mentor Graphics Steve Pytel, Ansoft Syed Huq, Cisco Systems Syed Sadeghi, ST Micro Ted Mido, Synopsys Terry Jernberg, Cadence Design Systems * Todd Westerhoff, SiSoft Vladimir Dmitriev-Zdorov, Mentor Graphics Vikas Gupta, Xilinx Vuk Borich, Agilent * Walter Katz, SiSoft * Wenyi Jin, LSI Logic Zhen Mu, Mentor Graphics ------------------------------------------------------------------------ Opens: - Wenyi Jin from LSI Logic is new to the group - He works in system design - Mike will repost minutes files that have incorrect dates. -------------------------- Call for patent disclosure: - No one declared a patent. ------------- Review of ARs: - Arpad: Write a clarification BIRD to discuss accuracy issues related to the various AMI clock_tick algorithms in an IBIS-AMI DLL - TBD - Todd: Update the BIRD for IBIS S-parameter box based on feedback from discussion - Todd: This is folded into Walter's proposal - Arpad: Write parameter passing syntax proposal (BIRD draft) for *-AMS models in IBIS that is consistent with the parameter passing syntax of the AMI models - TBD - TBD: Propose a parameter passing syntax for the SPICE - [External ...] also? - TBD - Arpad: Review the documentation (annotation) in the macro libraries. - Deferred until a demand arises or we have nothing else to do ------------- New Discussion: Bob: Considering Michael Mirmak to edit the AMI Improvements BIRD: - He should have a fresh view of the work, having been out of the meetings - Currently he is in Taiwan until the end of this month - He has a talent for clarity - There should be an editorial group including Michael, Walter and others - Todd: I would like to join the editorial group - Arpad: Is this a paid job? - Bob: No - Walter: - Would like to follow these steps: - 1 Have a 1 meeting final review to resolve open issues (2 or 3) - 2 Brainstorm (this group) to decide on document restructuring - We have restricted to the previous structure so far - Do we want an intro to serdes modeling? - What we have is a reference manual - 3 Editing group produces the document - Walter: There are two parts to the BIRD: - syntax - reserved parameters - We also need a jitter BIRD and an analog amendment - We may be one month away from editing - Bob: The editing group might propose restructuring - We need to move the IBIS portion from the middle of AMI - There might be some new topics too - A compatibility section, for example - We don't have an outline yet - The IBIS committee should not have to deal with editorial issues - We need to review the whole document with any new parameters in it - Walter: Should this committee create the BIRD? - Bob: That would be preferable - Michael M should head the editorial group - Walter: The editorial group might decide to put it in a non-text format - It might have graphics - It may not be compatible with the IBIS spec - Bob: I would not favor that - Arpad: Would it be an independent spec? - Walter: That would be better - We should not have put AMI into the IBIS spec 2 years ago - Todd: IBIS has caused some difficulty by being restricted to text only - Arpad: Other specs like VHDL have PDF formats - We could have an independent spec referenced by IBIS - Randy: People mostly look at our PDF IBIS spec file anyway - Arpad: We had decided to make the IBIS spec parseable - The IBIS comment character leads most lines, for example - Bob: We could reduce section 6c to IBIS format - The rest could be in a separate document - We are not ready to rework all of IBIS - An ANSI standard submission should not be all jumbled up - We just want to get this AMI document out - Walter: We should have a state-of-the-art AMI spec - Mike: The current IBIS spec is an MSWord document - Can a multi-file document be an ANSI standard? - Bob: We should be able to convert the editing group product to text - John: The issue may be that the editing group product may be hard to convert to text - Arpad: The comment character on every line is an issue - Bob: This should be done for the whole spec if at all - Todd: Are we moving away from having a .txt version of the spec? - Arpad: The .txt was only there to be parseable - Mike: The current .txt file has 436 errors and 57 warnings in IBISCHK5 - Todd: We saddled ourselves with a very large spec - We need a strategy to evolve it more rapidly - We could reference a separate document - The AMI syntax is very different anyway - We should also deprecate some language features, like HTML does - Walter: Agree, some keywords can go - Bob: Are people expected to render things obsolete with the new release? - Walter: Models written to 5.0 standards will still work - Only minor editing or parser tolerance is needed - Arpad: We should write a BIRD to move most content to a new document - Walter: There would be 2 documents, voted on together - Bob: We could take section 10 out of IBIS - That would put the process on hold - There would be nothing to submit - Walter: I will prepare a new chapter 1 Introduction - Bob: It needs an outline - The Touchstone spec gives us a template - Walter: A tech writer can do that - We should brainstorm next week Next meeting: 16 Mar 2009 12:00pm PT -------- IBIS Interconnect SPICE Wish List: 1) Simulator directives