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.
