Minutes, IBIS Quality Committee

10 Jul 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, Siemens
  Eric Brock
  Gregory R Edlund
  Hazem Hegazy
  John Figueroa
  John Angulo, Mentor Graphics
  Katja Koller, Siemens
  Kevin Fisher
* Kim Helliwell, LSI Logic
  Lance Wang, IOMethodology
  Lynne Green
* Mike LaBonte, Cisco
  Mike Mayer, SiSoft
  Moshiul Haque, Micron Technology
  Peter LaFlamme
  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.

AR Review:

- Bob work with IBIS committee to make ibischk cautions show by default
  - Bob brought this up at the last IBIS open forum
    - The decision was to not change anything
    - Bob said ibischk 4.2.2 will be released this Friday
  - A new caution is needed for inconsistent diff pairs
    - Watch out for a [Model] used in both differential and single ended.
  - Bob said we have to recognize that cautions create more work for those
    that have to investigate each one.

- Mike delete IQ check 3.4.2
  - Done

- Mike renumber the IQ spec so that [Model Selector] is new section 4
  - Done
  - Does not include material from Roy and David
  - Mike having trouble with MSWord outline numbering feature
    - The table of contents has a numbering error because some section
      heads can not be changed to the Secion Head format.

- Roy send cleanup suggestions for the IQ spec
  - Done

- All review 5/14 email from David Banas and email any feedback
  - David got one response

- David consider adding text to 4.2.21, 4.2.23, 4.2.25
  - Done, but Mike has not yet added the emailed material

New items:

- none

Continued review of IQ specification:

We decided not to review [Receiver Threshold] checks now.

We have deleted 3.4.1 and 3.4.2
- These are not needed because ibischk catches those problems.
- David asked if ibischk is documented
- In theory, more checks will become obsolete as ibischk is improved

Section 5.1 has no introductory text
- Other sections also have no text
- No action required

5.1.1.	{LEVEL 2}  [Model] parameters have correct typ/min/max order
- We reviewed usage of min/typ/max data in IBIS
  - Bob said that min/typ/max is by process corner for all data except C_comp
    - The min data is slow, max data is fast
    - C_comp min is the lowest value, which admittedly is usually fastest
    - Expected min temperature value is highest for CMOS, lowest for bipolar
  - Kim pointed out that it is difficult to determine slow/fast by looking
    at IV tables
    - Looking at area under IV curves may not be correct
  - David said that package values are in numerical order, and 
  - Bob: package values are not correlated with buffer corner
- This check should explain the exceptions
- Kim: Current text of this check is contradictory

Discussion of 5.1.1 will resume at the next meeting.

Next meeting:

17 Jul 2007
11-12 AM EST (8-9 AM PST)
Phone: 1.877.384.0543 or 1.800.743.7560
Passcode: 90437837

Meeting ended at 12:07 PM Eastern Time.
