Minutes, IBIS Quality Committee

11 Sep 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 disclosure:

- No one declared a patent.

AR Review:

- none

New items:

Mike is unable to make it to 3 Tuesday meetings:
- Sep 18, Oct 16, Nov 6
- We can try to have Wednesday meetings in those weeks

Continued review of the IQ specification:

5.2.22.	{OPTIONAL} [Receiver Thresholds] Vinh_dc, Vinl_dc complete
- Roy pointed out that there is an extra space after "condition".

AR: Mike remove duplicate space from 5.2.22

5.2.2.	{LEVEL 3}  [Model] Vinl and Vinh reasonable
- This has been recently reviewed and changed (but see below).
- We decided that this check looks mostly OK.
- Mike made changes to be consistent with IBIS terminology:
  - Changed "subparameters" to "parameters"
  - Changed "section" after "[Model]" to "keyword".

5.2.5.	{LEVEL 3}  [Model Spec] Vinl and Vinh reasonable
- This has been recently reviewed and changed.
- The text in 1.1v did not match the rewrite sent by David Banas, so
  we reviewed that text from his email.
- We changed "complete" in the title to "reasonable".
- We were not sure about keeping this:
  "The min and max values given must be correct for the min and max
  values given for the supply voltage in the [Voltage Range] keyword."
  - The correspondence of typ/min/max across parameters is assumed.
- Discussion of HSTL and SSTL technologies was deleted.
- Mike suggested a requirement comparing [Model] to [Model Spec]:
  - "The [Model] Vinl and Vinh values must match corresponding values in
    [Model Spec], if any. These may correspond to typ, min, or max values
    in the [Model Spec] keyword, as appropriate."
  - 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 add this requirement to 5.2.2, not 5.2.5.
- We decided to change "some I/O standards" to "many I/O standards".

AR: Mike make changes to 5.2.5

5.2.6.	{LEVEL 2}  [Model Spec] Vinl+/- and Vinh+/- complete
- This should be a level 3 check, because these are used for timing.
- We decided to add:
  "This would be required for inputs that exhibit hysteresis,
  such as Schmitt trigger devices."

AR: Mike make changes to 5.2.6
AR: Mike find out if ibischk catches less than 4 hysteresis params

5.2.7.	{LEVEL 2}  [Model Spec] Vinl+/Vinh+ greater than Vinl-/Vinh-
- We agreed to delete this check because ibischk checks it

5.2.8.	{LEVEL 3}  [Model Spec] Vinl+/- and Vinh+/- enclose Vmeas
- There was debate over the idea of combining this with 5.2.6.
  - Mike preferred to keep existence and quality checks separate.
  - Moshiul pointed out that we have a precedent for reducing the number
    of checks.
- We decided to combine this into 5.2.6.
  - Title becomes "... complete and reasonable"

AR: Mike update and release 1.1x document

Next meeting:

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

Meeting ended at 12:01 PM Eastern Time.

