From: ibis-interconn-bounce@freelists.org on behalf of Mirmak, Michael [michael.mirmak@intel.com] Sent: Monday, August 04, 2008 11:15 PM To: ibis-interconn@freelists.org Subject: [ibis-interconn] IBIS Ad Hoc Interconnect Task Group July 30 Minutes and Aug. 6, 2008 ====================================================================== IBIS INTERCONNECT MODELING AD HOC TASK GROUP MEETING MINUTES AND AGENDA http://www.eda.org/ibis/adhoc/interconnect/ Mailing list: ibis-interconn@freelists.org ====================================================================== Next Meeting Wednesday, August 6, 2008 8 AM US Pacific Time Telephone Bridge Passcode 916-356-2663 3 522-8385 Use the LiveMeeting Links in Outlook or the information below: Meeting ID: df31442e0d5f45448d379c7594b3e487 Entry Code: 641IwzcKZ Location: meet:sip:michael.mirmak@intel.com;gruu;opaque=app:conf:focus:id:df31442e0d5f45448d379c7594b3e487%3Fconf-key=641IwzcKZ http://tinyurl.com/6nzb3t Agenda: - Call for patents - Opens - Touchstone 2.0 Formal Text Review ====================================================================== Minutes from July 30: Attendees: ---------- (* denotes present) Agilent - Radek Biernacki*, John Moore, Ken Wong* Ansoft - Denis Soldo Cadence Design Systems - Terry Jernberg*, Brad Griffin Green Streak Programs - Lynne Green Hewlett-Packard - Rob Elliott Intel - Michael Mirmak* Mentor Graphics Corp. - John Angulo, Vladimir Dmitriev-Zdorov* Micron Technology - Randy Wolff Sigrity - Sam Chitwood, Raymond Y. Chen, Tao Su, Brad Brim SiSoft - Walter Katz* Teraspeed Consulting Group - Bob Ross* ======================================================================== No patents were announced. The team reviewed the latest draft text of the full Touchstone 2.0 specification. Radek suggested the text portion he supplied for page 4 be split from the phrase, "electrical quantities," to be added to the mixed-mode section. Vladimir added that the voltage and current formulae are more relevant to Y and Z parameters than to S parameters. The team agreed that mention of MSS/MMS be removed, in favor of simply noting that S, Y and Z parameters are supported in mixed-mode representations with the proper notation in the options line. Radek added that, to smooth the Introduction of mixed-mode concepts for new readers, conventional S parameters be described and used as an example before the additional mixed-mode features are covered. This is particularly important when noting that the mixed-mode section can contain single-ended data. Bob observed that the hyphenation of the keyword [Mixed-mode Order] should be made consistent, including capitalization of "mode," with other IBIS and ICM Keywords and the use of "2-port," etc. throughout the document. Bob also Reiterated his objections to the use of semi-colons as delimiters in [Mixed-mode Order]. These could be replaced with spaces, so long as spaces were not allowed after the commas separating port numbers. Walter suggested, as an alternative, that whitespace, tabs and commas could all be used as delimiters, so long as the context is consistent for the parser. Walter added that the document should explicitly explain the treatment of pathological cases, such as two commas in a row, or two commas at the start and/ or end of a line. Ken won noted that using space and comma characters as delimiters can sometimes be a problem for parsers. The document still requires a clear explanation that the [Number of Ports] keyword entry must agree with the count of the mappings under [Mixed-mode Order]. Reviews will continue on the updated text in the next meeting. ======================================================================== Team Objectives: 1) complete ICM-IBIS linking BIRD and any associated changes to the ICM specification 2) update the ICM specification, if needed, to clarify the mapping of ICM nodes to S-parameter ports 3) complete a specification for "Touchstone Plus" or similar industry-standard definition for Touchstone-like files, to include complex impedance references, removal of limits on the maximum number of ports and per-port impedance references ' ------------------------------------------------------------------ The IBIS Ad Hoc Interconnect Task Group Mailing List Archives are available at: http://www.freelists.org/archives/ibis-interconn TO UNSUBSCRIBE: Send a message to "ibis-interconn-request@freelists.org" with a subject of "unsubscribe" To administer your subscription status from the web, visit: http://www.freelists.org/list/ibis-interconn ------------------------------------------------------------------ The IBIS Ad Hoc Interconnect Task Group Mailing List Archives are available at: http://www.freelists.org/archives/ibis-interconn TO UNSUBSCRIBE: Send a message to "ibis-interconn-request@freelists.org" with a subject of "unsubscribe" To administer your subscription status from the web, visit: http://www.freelists.org/list/ibis-interconn