Minutes, IBIS Quality Committee

21 Aug 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 Systems
  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.

Call for patent for disclosure:

- No one declared a patent.

AR Review:

- David rewrite IQ 5.2.2 as a level 2 check
  - Done

New items:

Continued review of the IQ specification:

5.2.2.	{LEVEL 3}  [Model] Vinl and Vinh reasonable
- This has not yet been incorporated into a released version of the IQ spec
- We reviewed the email sent by David
- Bob: Maybe this could be a level 1 check because ibischk checks presence
  - But presence does not guarantee reasonableness
- Mike: What do chip makers intend to use for timing sloppiness?
  - David: Vinl/Vinh
  - Bob: Sometimes have to tighten Vinl/Vinh for better timing analysis
- Moshiul: We should discuss the relationship with [Model Spec] and
  [Receiver Thresholds]
  - There is an override priority
  - Mike: Should we discuss this here?
  - David: In the past we prefered backward references over forward
- This sentence is too strongly worded:
  "Any ring-back present in the voltage waveform at the receiver inputs
   must remain outside of this region"
  - The datasheet requires this anyway
  - Should be a "should", not a "must".
- We decided to use the 5.2.2 text as emailed by David

5.2.5 {LEVEL 2}  [Model Spec] Vinl and Vinh range correct
- Bob: TTL 0.8V/2.0V was the guaranteed bracket
  - But devices always switched at 1.2V anyway
- David: Are there examples where [Model Spec] Vinh typ does not match
  [Model] Vinh?
  - Bob: Yes, could use min or max for [Model] Vinh
  - Moshiul: Vmeas is specified as a percent of power anyway
  - Bob: Timing fixtures imply a single power voltage
- We decided to:
  - Change "typ value given must agree" change to "should"
  - Change "several" to "the following"
  - Change "some I/O standards" to "many I/O standards"

We will not release a new "x" doc yet.

Next meeting:

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

Meeting ended at 12:00 PM Eastern Time.