Minutes, IBIS Quality Committee 23 February 2010 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 Lijun, Huawei Lynne Green, Green Streak Programs * Mike LaBonte, Cisco Systems Mike Mayer, SiSoft Moshiul Haque, Micron Technology Muniswarareddy Vorugu, ARM Ltd * Pavani Jella, TI Peter LaFlamme Randy Wolff, Micron Technology Radovan Vuletic, Qimonda Robert Haller, Enterasys Roy Leventhal, Leventhal Design & Communications Sherif Hammad, Mentor Graphics Tim Coyle, Signal Consulting Group 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 opens and patent disclosures: - No one declared a patent. AR Review: - Mike post Bruce Archambeault presentation on website - Done - Anders contact Bruce Archambeault about IEEE P1597.1 and IQ participation - Done - Mike post link to Randy and Moshiul's presentation - Done New items: We discussed an email from Anders about zero-zero checks: - Anders: Checkers need to know how far they can deviate from zero - Eckhard: This is called leakage current in datasheets - Bob: This check is to detect gross errors, such as units problems - IBIS still supports bi-polar devices, which do not pass through zero-zero - Mike: Our check clarifies that it is for full swing technologies such as CMOS - Bob: This should be a CAUTION - The file is still legally acceptable - We try to set limits high enough to allow for common use - We are simply asking "Are you sure you really want that?" - Mike: We should have explained what to do when IBISCHK warns about this - Bob: We need a balance between too many warnings and missing errors - Mike: What do we do now? - Fix it ASAP? - Start an errata document - Note it in the minutes? - Bob: The minutes are only searchable by Mike - We could add "Proposed Change" documents to the work archive - Bob: We need other thresholds such as for non-monotonic flat spots and reversals - Our checks are mostly looking for units errors - Mike: IBISCHK warns for 1uA - We only need to mention this in the checks - Bob: Is that what we want? AR: Anders verify IBISCHK 1uA leakage WARNING and propose 5.3.8/5.3.9 changes Mike: Should we also merge 5.3.8 & 5.3.9? - These checks are nearly identical, but for Pullup and Pulldown - Lance: Should this consider the clamps? - Mike: Maybe we should check combined curves - Some models have clamp currents that offset Pulldown leakage to zero - This is probably an extraction problem - Anders: The cookbook describes how to extract correctly - Bob: Tools usually have post-processing to fix these issues - Mike: s2ibis3 is still used, and it has minimal post-processing - Mike: Our change proposals should have full text before and after the change - Bob: The IQ spec could document IBISCHK thresholds, etc. - Mike: Documenting IBISCHK could be a project for the group - But we do not all have source code access - Bob: The code probably could be released to the group - We could discuss FSV next week AR: Mike propose change to merge IQ checks 5.3.8 & 5.3.9 Next meeting will be Mar 02 Meeting ended at 12:07 PM Eastern Time.