Minutes, IBIS Quality Committee

09 March 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.

- Mike asked if there should be an agenda each week
  - For a few years the agenda was always to review the IQ spec
  - Mike sent only "call info", no agenda
  - Now our activities have more variety
  - We agreed the weekly meeting notice should have an agenda

AR Review:

- Anders verify IBISCHK 1uA leakage WARNING and propose 5.3.8/5.3.9 changes
  - Done

- Mike propose change to merge IQ checks 5.3.8 & 5.3.9
  - Done

New items:

Discussion of claimed IBISCHK 1uA leakage warning:
- Anders checked one model, changing values to produce a warning
  - Changed the current of the point closest to 0/0
  - At 400mA IBISCHK5 still did not complain
- Bob: This could be a bug report
- Anders: Not sure if clamps should be checked
- Bob: This should be checked again with CAUTIONs on

Mike showed Anders' QUAIL document:
- Title: "Check for Pullup/Pulldown I-V Zero-crossing for IQ2.0"
- The existing IQ checks assume IBISCHK warns for current exceeding 10uA
  - That has proven to be incorrect
- The proposal is to document the 10uA limit in the checks
- There was some discussion about the proposed document format
  - We like the acronym QUAIL, but what does it stand for?
  - Change to QUAlity Issue Log
- We tested a small IBIS file, adding leakage
  - IBISCHK did not complain even with cautions turned on
- Bob: This writeup looks good

Mike showed his QUAIL document:
- Title: "Merge IQ spec 2.0 sections 5.3.8 & 5.3.9"
- These checks are identical except one is for Pullup, the other for Pulldown
- The checklist would be shorter with only one check for both
- Mike: At one time the descriptions were different
  - The Pullup check explained the difference between IBIS and absolute
    voltage conventions
  - That is now covered in the document introduction
- Bob: This will change the check numbering
- Mike: It may not be worth it to make this change
- Mike will not submit this

Bob: We have to decide if there will be a formal process:
- Mike: IQ is not an ANSI spec, so it should not be too formal
- Bob: We could copy the BIRD mechanism

AR: Bob consider creating ibis/quail directory and Perl script

Next meeting will be Mar 16

Meeting ended at 12:01 PM Eastern Time.