Draft minutes of Parallel SCSI WG - Sept 9, 2002

John Lohmeyer lohmeyer at t10.org
Tue Sep 10 08:15:31 PDT 2002


* From the T10 Reflector (t10 at t10.org), posted by:
* John Lohmeyer <lohmeyer at t10.org>
*
A PDF version of these minutes is available at:

   ftp://ftp.t10.org/t10/document.02/02-341r0.pdf

Accredited Standards Committee*
InterNational Committee for Information Technology Standards (INCITS)

                                                  Doc. No.: T10/02-341r0
                                                      Date: September 10, 2002
                                                  Reply to: John Lohmeyer
To:       T10 Membership
From:     Ralph Weber & John Lohmeyer
Subject:  Parallel SCSI Working Group Meeting -- September 9, 2002
           Minneapolis, MN

Agenda
1.     Opening Remarks
2.     Approval of Agenda
3.     Attendance and Membership
4.     SPI-5 Topics
4.1      SPI-5 Testing [Manildi]
4.2      Ultra 640 input offset compensation and training pattern (02-266)
[Penokie]
4.3      Clock-to-Data and Duty Cycle Timings (02-268) [Penokie]
4.4      SPI-5 Working Draft Review [Penokie]
5.     Old Business
6.     New Business
6.1      Proposed modifications to SPI-5 timing clause (02-339) [Evans]
6.2      Proposed changes for SPI-5 (02-325) [Aloisi]
6.3      Interconnect specifications (discussion) [Ham]
7.     Review of Recommendations to the Plenary
8.     Meeting Schedule
9.     Adjournment

Results of Meeting

1.     Opening Remarks

John Lohmeyer, the T10 Chair, called the meeting to order at 9:05 a.m.,
Monday, September 9, 2002. He thanked Dave Peterson of Cisco Systems for
hosting the meeting.

As is customary, the people attending introduced themselves and a copy of the
attendance list was circulated.


2.     Approval of Agenda

The draft agenda was approved with the following additions and changes:

6.3      Interconnect specifications (discussion) [Ham]

No items were added/revised during the course of the meeting.


3.     Attendance and Membership

Attendance at working group meetings does not count toward minimum attendance
requirements for T10 membership. Working group meetings are open to any person
or organization directly and materially affected by T10's scope of work. The
following people attended the meeting:

          Name          S        Organization         Electronic Mail Address
---------------------- -- ------------------------- -------------------------
Mr. Ron Roberts        P  Adaptec, Inc.             Ron_Roberts at adaptec.com
Mr. James A. Lott, Jr. A  Dallas Semiconductor      jim.lott at dalsemi.com
Mr. Ralph O. Weber     P  ENDL Texas                roweber at acm.org
Mr. Rob Elliott        P  Hewlett Packard Co.       Elliott at hp.com
Dr. William Ham        A  Hewlett Packard Co.       bill_ham at ix.netcom.com
Mr. Hitoshi Ogawa      AV Hitachi Ltd.              h-ogawa at gm.str.hitachi.
                                                     co.jp
Mr. Terumi Takashi     V  Hitachi Ltd.              t-takasi at gm.str.hitachi.
                                                     co.jp
Mr. George O. Penokie  P  IBM / Tivoli Systems      gop at us.ibm.com
Mr. Dan Colegrove      V  IBM Corp.                 dcolegro at us.ibm.com
Mr. John Lohmeyer      P  LSI Logic Corp.           lohmeyer at t10.org
Mr. William Petty      A  LSI Logic Corp.           william.petty at lsil.com
Mr. Mark Evans         P  Maxtor Corp.              mark_evans at maxtor.com
Mr. Russ Brown         V  Maxtor Corp.              russ_brown at maxtor.com
Ms. Emily Hill         P  Microsoft Corp.           emhill at microsoft.com
Mr. Rob Haydt          A  Microsoft Corp.           robhay at microsoft.com
Mr. Dan Dawiedczyk     AV Molex Inc.                ggriessler at molex.com
Mr. Charles Monia      P  Nishan Systems Inc.       cmonia at nishansystems.com
Mr. Henry Kuo          V  QLogic Corp.              henry.kuo at qlogic.com
Mr. Gerald Houlder     P  Seagate Technology        gerry_houlder at seagate.com
Mr. Vit Novak          P  Sun Microsystems, Inc.    vit.novak at sun.com
Mr. Paul D. Aloisi     P  Texas Instruments         Paul_Aloisi at ti.com

21 People Present

Status Key:  P    -  Principal
              A,A# -  Alternate
              AV   -  Advisory Member
              L    -  Liaison
              V    -  Visitor


4.     SPI-5 Topics

4.1    SPI-5 Testing [Manildi]

In the absence of Bruce Manildi, Gerry Houlder agreed that this item should be
dropped from future agendas.

4.2    Ultra 640 input offset compensation and training pattern (02-266)
[Penokie]

George Penokie requested that this topic be removed from future agendas.

4.3    Clock-to-Data and Duty Cycle Timings (02-268) [Penokie]

George Penokie requested that this topic be removed from future agendas.

4.4    SPI-5 Working Draft Review [Penokie]

George Penokie stated that only one editor's comment remains in SPI-5 and
Paul's proposal (see item 6.2) addresses that comment. Bill Ham expressed
concerns that the tables in Paul's proposal were still too liberal, but
several other members of the group disagreed strenuously.

As stated last time, a letter ballot on forwarding SPI-5 to first public
review is expected to start later in September.


5.     Old Business

No old business was brought to the meeting for consideration.


6.     New Business

6.1    Proposed modifications to SPI-5 timing clause (02-339) [Evans]

Russ Brown proposed a couple of corrections to the timing budget section as
well as a suggesting that the timing budget table be rearranged to clarify
relationships between the values (02-339r0). The group requested changes in
the proposal.

Russ Brown moved that 02-339r1 (r0 as modified) be recommended for inclusion
in SPI-5. Paul Aloisi seconded the motion. In the absence of any objections,
the motion passed unanimously.

6.2    Proposed changes for SPI-5 (02-325) [Aloisi]

Paul Aloisi presented a proposal to update and correct the termination
specifications in SPI-5. Paul noted that critical changes had been omitted
|from the proposal and presented those changes. The group requested further
revisions in the proposal.

Paul Aloisi moved that 02-235r1 (r0 as revised) be recommended for inclusion
in SPI-5. Bill Ham seconded the motion. In the absence of any objections, the
motion passed unanimously.

6.3    Interconnect specifications (discussion) [Ham]

Bill Ham asked the group to consider some SPI-5 issues raised by PIP revision
3. The group discussed interconnect issues as they relate to SPI-5, signal
quality, how to perform the testing described in PIP, and related issues.

Bill raised the issue of SPI-5 specifying an eye opening. Russ Brown stated
the opinion that the eye opening specified in SPI-5 has value in
implementations that his company has seen. Bill noted that the eye opening
could be closed and receivers can still interpret the signal. Russ responded
that having some opening is good guidance and leaves room for bad
implementations.

Discussion turned to the specification of a transfer function in SPI-5. Bill
surfaced several reasons for having transfer functions in SPI-5. Bill proposed
that one of the interface manufacturers bring a transfer function proposal to
the group.

Russ Brown presented several reasons why the eye is open and how the margin
values written into SPI-5 were derived. Bill agreed that no changes were
necessary.


7.     Review of Recommendations to the Plenary

Ralph Weber noted that the following recommendations have been made to the T10
plenary:

Proposed modifications to SPI-5 timing clause (02-339r1) [Evans] {r0 as
revised, unanimous}
Proposed changes for SPI-5 (02-325r1) [Aloisi] {r0 as revised, unanimous}


8.     Meeting Schedule

The next meeting of the Parallel SCSI Working Group will be Monday November 4,
2002 commencing at 9:00 a.m. in Huntington Beach, CA at the Hilton Waterfront
Beach Hotel (714-960-7873), hosted by QLogic Corp.


9.     Adjournment

The meeting was adjourned at 11:55 a.m. on Monday, September 9, 2002.

--
John Lohmeyer                  Email: lohmeyer at t10.org
LSI Logic Corp.                Voice: +1-719-533-7560
4420 ArrowsWest Dr.              Fax: +1-719-533-7183
Colo Spgs, CO 80907

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