[ibis-quality] Re: Minutes from the 29 Apr 2008 ibis-quality meeting
- From: "Mike LaBonte (milabont)" <milabont@xxxxxxxxx>
- To: <ibis-quality@xxxxxxxxxxxxx>
- Date: Fri, 2 May 2008 09:52:06 -0400
This time with the attachment.
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From: ibis-quality-bounce@xxxxxxxxxxxxx
[mailto:ibis-quality-bounce@xxxxxxxxxxxxx] On Behalf Of Mike LaBonte
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Sent: Friday, May 02, 2008 9:50 AM
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Subject: [ibis-quality] Minutes from the 29 Apr 2008 ibis-quality
meeting
Minutes from the 29 Apr 2008 ibis-quality meeting are attached. ARs:
AR: Anders propose BIRD to clarify meaning of Overshoot/Undershoot
Mike
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Minutes, IBIS Quality Committee
29 Apr 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
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:
AR: Mike write draft IQ G designation
- Done
New items:
Mike will be unavailable for the next 2 weeks.
- The next meeting will be in 3 weeks
Mike has posted IQ specification version 1.1ad to the web site
- Contains changes made several meeting back.
Anders: We never continued the overshoot/undershoot discussion
- Placed last on the agenda for this meeting.
Mike showed the draft IQ specification 1.1ae with G designator:
- Bob: Requiring a T-line fixture may be too much.
- Moshiul: Good idea to prevent fixtures that copy from R & F.
- Bob: Concerned about the work to produce many golden waveforms
- Mike: Software should be used to automate this.
- Requiring golden waveforms for every buffer would be discouraging.
- Moshiul: We should discuss a BIRD for external golden waveforms
- Guan: Should the package RLC be included in the fixture for golden waveforms?
- Mike: Not for simulation, but for measurement.
- Bob: We should limit fixture complexity.
- Guan: There should be no package model if possible.
- Anders: This works for simulation, but not for bench measurement.
- Near waveforms have to be measured at the pad.
- There should be a measurement point after pin RLC, just before T-line.
- Bob: We may need a BIRD for this.
- Bob: Only simulator extraction can probe the near point practically.
- Anders: the IBIS spec does not state if [Test Data] is from measurement
or simulation
- Mike: We could ask for a comment on this in the IQ specification.
- Anders: Comments should describe equipment used (bandwidth limits?)
- Bob: It would be best if it's more than a comment
- Information about correlation data should be in a separate document.
- Anders: If so much change is needed, it may be easier to start over
- We could include all of these ideas in a new golden waveform feature
- Moshiul: One transmission line may not be enough.
- Bob: If we need muc more flexibility, a SPICE circuit may be needed.
- Anders: We could use description language from the EMD proposal
- Mike: What we have works best for simulation, and is still useful for that.
Discussion of BIRD 105, Mandatory Golden Waveforms:
- Mike: Should the IBIS Open Forum vote on this at the next meeting?
- Anders: More discussion is needed.
- Bob: It might be discussed in the next meeting, voted later.
Discussion of Overshoot/Undershoot ambiguity:
- Anders: There are two sets of limits:
- Where the device no longer functions correctly, temporarily.
- Where the device is destroyed.
- Bob: the single limit should describe whichever is the lower limit.
- Anders: We should clarify this in IBIS
AR: Anders propose BIRD to clarify meaning of Overshoot/Undershoot
Next meeting:
20 May 2008 11-12 AM EST (8-9 AM PST)
Meeting ended at 01:19 PM Eastern Time.
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