Minutes, IBIS Quality Committee

12 April 2011

11:00-12:00 EST (08:00-09:00 PST)

ROLL CALL

Cisco Systems:                * Mike LaBonte
Ericsson:                       Anders Ekholm
Green Streak Programs:          Lynne Green
Huawei Technologies:            Guan Tao
IBM:                            Bruce Archambeault
IOMethodology:                * Lance Wang
Mentor Graphics:                John Angulo
Micron Technology:              Moshiul Haque,
                                Randy Wolff
Nokia Siemens Networks:       * Eckhard Lenski
Signal Consulting Group:        Tim Coyle
Teraspeed Consulting Group:   * Bob Ross
Texas Instruments:              Pavani Jella

Everyone in attendance marked by *

NOTE: "AR" = Action Required.

-----------------------MINUTES ---------------------------
Mike LaBonte conducted the meeting.

Call for opens and IBIS related patent disclosures:

- No one declared a patent.

- Mike noted that Anders could not join us.

AR Review:

- None

New items:

Discussion of External Test spec:

Mike: Should we define the keyword hierarchy first?
- Bob: Two ways:
  - Model calls test setups
  - Test setups call models
  - We excluded pins from the tests
  - We should not be testing coupling, etc.
- Mike: There may be multiple models for one test
  - Or it could be a pin
  - The test needs to be the caller
- Bob: It has to document everything needed to produce the result
  - The names have to be distinct
  - Package models can be complex, tools may differ
- Mike: We should be able to test s-params, ICM, EBD, etc.
- Bob: There could be some problems making assumptions
  - Tools may handle coupling sections differently
  - Model selector would have to be given for pins
  - If it is too much it may not be adopted

Mike: Could s2ibis generate these new test waveforms?
- Lance: S2ibis has many limitations
  - One vendor has implemented golden waveforms
  - But it will not be open source
  - s2ibis3 is not ready for wide use
- Bob: New work on s2ibis would have to be funded
- Mike: Ambrish was the last to update it
- Lance: s2ibis is not good for production processes
- Bob: I use it but make corrections to the models
  - Bob described process steps for producing reference data
  - Have to document when the input threshold is reached
- Mike: We might want data to declare the transition offset
  - Anders' idea of giving stimulus as a list of times should help
  - SPICE simulations usually have dead time to reach steady state
- Bob: Leading edge removal is an important tool
- Mike: Could we add some data to hep align the waveforms?
- Bob: One technique is to determine the optimal delay mathematically
  - Or try different shift offsets to find peak correlation
  - FSV has to deal with this
- Mike: The FSV1D tool makes the user line them up
- Bob: The timing test load is used to figure out the offset for timing

Mike: Should we drop back to bi-weekly meetings?
- Bob: We have been struggling on this topic
  - We need to focus on the test data as the primary driver
  - We should skip next week because Anders will not be there

We decided the next meeting would be Apr 26

Next meetings:
- Next meetings Apr 26 and May 03

Apr 26 agenda:
- Review external test BIRD draft

Meeting ended at 12:03 Eastern Time.