Minutes, IBIS Quality Committee 29 Apr 2008 11-12 AM EST (8-9 AM PST) ROLL CALL Adam Tambone * Anders Ekholm, Ericsson Barry Katz, SiSoft Benny Lazer Benjamin P Silva Bob Cox, Micron * Bob Ross, Teraspeed Consulting Group Brian Arsenault David Banas, Xilinx Eckhard Lenski, Nokia Siemens Networks Eric Brock * Guan Tao, Huawei Technologies Gregory R Edlund Hazem Hegazy Huang Chunxing, Huawei Technologies John Figueroa John Angulo, Mentor Graphics Katja Koller, Nokia Siemens Networks Kevin Fisher Kim Helliwell, LSI Logic Lance Wang, IOMethodology Lynne Green * Mike LaBonte, Cisco Systems Mike Mayer, SiSoft * Moshiul Haque, Micron Technology Peter LaFlamme Randy Wolff, Micron Technology Radovan Vuletic, Qimonda Robert Haller, Enterasys Roy Leventhal, Leventhal Design & Communications Sherif Hammad, Mentor Graphics Todd Westerhoff, SiSoft Tom Dagostino, Teraspeed Consulting Group Kazuyoshi Shoji, Hitachi Sadahiro Nonoyama Everyone in attendance marked by * NOTE: "AR" = Action Required. -----------------------MINUTES --------------------------- Mike LaBonte conducted the meeting. Call for patent disclosure: - No one declared a patent. AR Review: AR: Mike write draft IQ G designation - Done New items: Mike will be unavailable for the next 2 weeks. - The next meeting will be in 3 weeks Mike has posted IQ specification version 1.1ad to the web site - Contains changes made several meeting back. Anders: We never continued the overshoot/undershoot discussion - Placed last on the agenda for this meeting. Mike showed the draft IQ specification 1.1ae with G designator: - Bob: Requiring a T-line fixture may be too much. - Moshiul: Good idea to prevent fixtures that copy from R & F. - Bob: Concerned about the work to produce many golden waveforms - Mike: Software should be used to automate this. - Requiring golden waveforms for every buffer would be discouraging. - Moshiul: We should discuss a BIRD for external golden waveforms - Guan: Should the package RLC be included in the fixture for golden waveforms? - Mike: Not for simulation, but for measurement. - Bob: We should limit fixture complexity. - Guan: There should be no package model if possible. - Anders: This works for simulation, but not for bench measurement. - Near waveforms have to be measured at the pad. - There should be a measurement point after pin RLC, just before T-line. - Bob: We may need a BIRD for this. - Bob: Only simulator extraction can probe the near point practically. - Anders: the IBIS spec does not state if [Test Data] is from measurement or simulation - Mike: We could ask for a comment on this in the IQ specification. - Anders: Comments should describe equipment used (bandwidth limits?) - Bob: It would be best if it's more than a comment - Information about correlation data should be in a separate document. - Anders: If so much change is needed, it may be easier to start over - We could include all of these ideas in a new golden waveform feature - Moshiul: One transmission line may not be enough. - Bob: If we need muc more flexibility, a SPICE circuit may be needed. - Anders: We could use description language from the EMD proposal - Mike: What we have works best for simulation, and is still useful for that. Discussion of BIRD 105, Mandatory Golden Waveforms: - Mike: Should the IBIS Open Forum vote on this at the next meeting? - Anders: More discussion is needed. - Bob: It might be discussed in the next meeting, voted later. Discussion of Overshoot/Undershoot ambiguity: - Anders: There are two sets of limits: - Where the device no longer functions correctly, temporarily. - Where the device is destroyed. - Bob: the single limit should describe whichever is the lower limit. - Anders: We should clarify this in IBIS AR: Anders propose BIRD to clarify meaning of Overshoot/Undershoot Next meeting: 20 May 2008 11-12 AM EST (8-9 AM PST) Meeting ended at 01:19 PM Eastern Time.