Minutes, IBIS Quality Committee

18 Dec 2007

11-12 AM EST (8-9 AM PST)

ROLL CALL
  Adam Tambone
  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
  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:

- Mike change 5.2.16 to level 2
  - Done

- Moshiul ask Randy Wolff to join next IQ meeting
  - Done

- Mike look into ibischk checks for [Receiver Thresholds]
  - Done

- Mike send minutes from prior meeting on Receiver Thresholds]
  - Done

- Mike change text of 5.2.16 to require basis documentation
  - TBD

- David produce response to JEITA
  - 31% done

New items:

- Eckard Lenskie sent a presentation to the list
  - Tries to put [Receiver Thresholds] concepts in pictures.

- Bob: IQ checks mimic IBIS spec

- Next meeting is 8 Jan

- Randy Wolff: discussion of [Receiver Thresholds]
  - It was added to allow for DDR1, especially diff inputs
  - JEDEC gives both AC & DC noise specs, but [Receiver Thresholds]
    doesn't split it up this way
    - Bob: It allows for threshold_sensitivity and selectable references
    - AC and DC noise are added to Vth 
    - Combination of Vth_max/Vth_min + Threshold_sensitivity gives
      9 different thresholds to measure
      - Eckhard's presentation shows this on slide 10
    - The original BIRD did not have Threshold_sensitivity
  - Discussion of Eckhard presentation from 2004
  - Moshiul: Are there any examples other than DDR?
    - Mike: Could LVDS use [Receiver Thresholds]?
      - Bob: Diff specs use different language, may not say AC/DC
    - Randy: [Receiver Thresholds] has been used for RLDRAM
  - Bob: Tslew is probably obsolete
    - Randy: Usually some large time value is put in
      - The Tslew parameter is a minimum slew rate to guarantee timing
    - Randy: Working on a BIRD to cover derating based on slew rate
      - JEDEC has tables relating timing adjustements to slew rate
      - SiSoft implements this outside of IBIS
    - Mike: Maybe IQ should not cover Tslew
      - Moshiul: We could suggest putting in a high value
  - Randy:
    - It would be good to tie data to a specific operating frequency.
    - Currently we need [Model Selector] for different frequencies

AR: Mike Post Eckhard's presentation to web site

Next meeting:

08 Jan 2008
11-12 AM EST (8-9 AM PST)
Phone: 1.877.384.0543 or 1.800.743.7560
Passcode: 90437837

Meeting ended at 12:06 PM Eastern Time.
