Minutes, IBIS Quality Committee

30 Sep 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
* Pavani Jella, TI
  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:

- none

New items:

Mike needs to post minutes from last meeting.

Continued review of the IBIS Quality Specification:

5.4.5.	{LEVEL 3}  Output and IO buffers have reasonable V-T tables
- We got stuck on this last time
- Simulators not trusted to simulate V-T correctly at high speed
- Bob: Agree that somtimes [Ramp] is sufficient
- Mike: Arpad's experiments with V-T fixtures hints that there could be problems
- We have to address 2 questions:
  - Is this level 3?
  - Is it clear on when V-T tables are not needed?
- If no reasonable V-T tables, does this pass level 2
- Mike: You can't separate voltage and time
- Anders: Signals look smoother with V-T tables
- Bob: No perfect solution to overclocking with IBIS
- Mike: We should drop this to level 2
- Eckhard: This is not specific about which waveforms are needed.
- Moshiul: We do not differentiate for open-drain, etc.
- Words like Most and Should are too soft.
  - Mike: Not worried about people passing models because of this.
- OK for open-source and open-drain to have 1 of each waveform.
  - Mike: Prefer to have 2 R values, but not worth mentioning.

AR: Mike will post 1.1ai

Level 5 [Ramp] checks
- We changed all of these to level 2

5.5.1.	{LEVEL 2}  Output and IO buffers have a [Ramp] section
- Deleted because ibischk detects this

Next meeting:

30 Sep 2008 11-12 AM EST (8-9 AM PST)

Meeting ended at 12:01 PM Eastern Time.