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Development *** THIS IS NOT A FINAL DRAFT *** SFF-8472 Rev 11.0

Diagnostic Monitoring Interface for Optical Transceivers Page 1

SFF Committee documentation may be purchased in hard copy or electronic form

SFF specifications are available at ftp://ftp.seagate.com/sff

SFF Committee

SFF-8472 Specification for

Diagnostic Monitoring Interface for Optical Transceivers

Rev 11.0 September 13, 2010

Secretariat: SFF Committee

Abstract: This specification defines an enhanced digital diagnostic monitoring

interface for optical transceivers which allows real time access to device operating

parameters.

This specification provides a common reference for systems manufacturers, system

integrators, and suppliers. This is an internal working specification of the SFF

Committee, an industry ad hoc group.

This specification is made available for public review, and written comments are

solicited from readers. Comments received by the members will be considered for

inclusion in future revisions of this specification.

Support: This specification is supported by the identified member companies of the

SFF Committee.

POINTS OF CONTACT:

Technical Editor: Technical Contributors:

Randy Clark Randy Clark, Agilent Technologies

Avago Technologies Pete Mahowald, Agilent Technologies

350 West Trimble Rd Tom Lindsay, E2O

San Jose, CA, 95131 Lew Aronson, Finisar

408-435-6763 Dan Kane, Finisar

randy.clark@avagotech.com Leland Day, JDS Uniphase

Jim Judkins, Micrel Semiconductor

Gus Carroll, Pine Photonics

Chairman SFF Committee Luis Torres, Stratos Lightwave

I. Dal Allan

14426 Black Walnut Court

Saratoga

CA 95070

408-867-6630

408-867-2115Fx

endlcom@acm.org

Development *** THIS IS NOT A FINAL DRAFT *** SFF-8472 Rev 11.0

Diagnostic Monitoring Interface for Optical Transceivers Page 2

EXPRESSION OF SUPPORT BY MANUFACTURERS

The following member companies of the SFF Committee voted in favor of this industry

specification.

AMCC JDS Uniphase

Arista Networks Luxtera

Avago Madison Cable

Broadcom Micrel

Clariphy Molex

EMC NetLogic uSyst

Emulex Nexans

ENDL OpNext

ETRI Panduit

Finisar Picolight

Hewlett Packard Samsung

Hitachi GST Stratos

Honda Connector Sun Microsystems

IBM Unisys

Infineon Vitesse Semiconductor

Intel W L Gore

The following member companies of the SFF Committee voted to abstain on this

industry specification.

Adaptec Hitachi Cable

Amphenol LSI

Brocade Maxtor

Comax Montrose/CDT

Cortina Systems Panasonic

DDK Fujikura QLogic

Dell Seagate

FCI Sumitomo

Foxconn Toshiba America

Fujitsu Components Tyco

Fujitsu CPA Volex

Hitachi America Xyratex

The user's attention is called to the possibility that implementation to this

Specification may require use of an invention covered by patent rights. By

distribution of this Specification, no position is taken with respect to the

validity of this claim or of any patent rights in connection therewith. The patent

holder has filed a statement of willingness to grant a license under these rights on

reasonable and non-discriminatory terms and conditions to applicants desiring to

obtain such a license.

Development *** THIS IS NOT A FINAL DRAFT *** SFF-8472 Rev 11.0

Diagnostic Monitoring Interface for Optical Transceivers Page 3

Foreword

The development work on this specification was done by the SFF Committee, an

industry group. The membership of the committee since its formation in August 1990

has included a mix of companies which are leaders across the industry.

When 2 1/2" diameter disk drives were introduced, there was no commonality on

external dimensions e.g. physical size, mounting locations, connector type,

connector location, between vendors.

The first use of these disk drives was in specific applications such as laptop

portable computers and system integrators worked individually with vendors to

develop the packaging. The result was wide diversity, and incompatibility.

The problems faced by integrators, device suppliers, and component suppliers led to

the formation of the SFF Committee as an industry ad hoc group to address the

marketing and engineering considerations of the emerging new technology.

During the development of the form factor definitions, other activities were

suggested because participants in the SFF Committee faced more problems than the

physical form factors of disk drives. In November 1992, the charter was expanded to

address any issues of general interest and concern to the storage industry. The SFF

Committee became a forum for resolving industry issues that are either not addressed

by the standards process or need an immediate solution.

Those companies which have agreed to support a specification are identified in the

first pages of each SFF Specification. Industry consensus is not an essential

requirement to publish an SFF Specification because it is recognized that in an

emerging product area, there is room for more than one approach. By making the

documentation on competing proposals available, an integrator can examine the

alternatives available and select the product that is felt to be most suitable.

SFF Committee meetings are held during T10 weeks (see www.t10.org), and Specific

Subject Working Groups are held at the convenience of the participants. Material

presented at SFF Committee meetings becomes public domain, and there are no

restrictions on the open mailing of material presented at committee meetings.

Most of the specifications developed by the SFF Committee have either been

incorporated into standards or adopted as standards by EIA (Electronic Industries

Association), ANSI (American National Standards Institute) and IEC (International

Electrotechnical Commission).

If you are interested in participating or wish to follow the activities of the SFF

Committee, the signup for membership and/or documentation can be found at:

www.sffcommittee.com/ie/join.html

The complete list of SFF Specifications which have been completed or are currently

being worked on by the SFF Committee can be found at:

ftp://ftp.seagate.com/sff/SFF-8000.TXT

If you wish to know more about the SFF Committee, the principles which guide the

activities can be found at:

ftp://ftp.seagate.com/sff/SFF-8032.TXT

Suggestions for improvement of this specification will be welcome. They should be

sent to the SFF Committee, 14426 Black Walnut Ct, Saratoga, CA 95070.

Development *** THIS IS NOT A FINAL DRAFT *** SFF-8472 Rev 11.0

Diagnostic Monitoring Interface for Optical Transceivers Page 5

Reference Revision 9.3 Revision 9.4/9.5 Revision 10.2/10.4

Section 2 Applicable Documents GBIC and SFP MSA Add: SFF 8079 and 8089 Add SFF 8431

Table 3.1 Address A0h Base definition Byte 13 = Reserved for SFF-8079

Bytes 128-255 Reserved for SFF-8079

Byte 13 = Rate Identifier

Byte 19 = OM3 Link Length

Bytes 128-255 Reserved for SFF-8079

Table 3.1a n/a Add Transceiver ID Examples Change to A2h Diagnostic Fields

Table 3.1b n/a n/a Add Transceiver ID Examples

Table 3.1c n/a n/a Add Transceiver ID Examples

Table 3.2 Identifiers Same as SFP MSA 8074 Same as SFP MSA 8074 Add 04h to 0Ch for alternate MSAs

Table 3.4 Connectors Same as SFP MSA 8074 Same as SFP MSA 8074 Add 0Ch and 22h for new connectors

Table 3.5 Transceiver Compliance Add Sonet and IB to

SFP MSA 8074

Add ESCON, EFM, Copper and 8G Add 10GE, 10GFC, OC-192,

FC Base-T and medium FC length

Table 3.5a Sonet Compliance Base definition Add short reach SR-1 <same>

Table 3.5b Transceiver ID Examples n/a Add Base definition Add more examples

Table 3.6 Encoding Same as SFP MSA 8074 Same as SFP MSA 8074 Add 06h = 64B/66B

Table 3.6a Rate Identifier n/a n/a Add Base definition

Table 3.6b Cable Identifier n/a n/a Add Base definition

Table 3.6c Cable Identifier n/a n/a Add Base definition

Table 3.7 Option Values Same as SFP MSA 8074 Same as SFP MSA 8074 Add Byte 64h for SFF 8431

Table 3.10 Enhanced Options Base definition Add Byte 93, Bit 2 for SFF 8079 Add Byte 93, Bit 1 for SFF-8431

Table 3.11 Soft Timing Base definition <same> Add t_power_level2 for SFF-8431

Table 3.12 Compliance 01h = revision 9.3 Add 02h = revision 9.5 Add 03h = revision 10

Table 3.17 Status/Control Base definition Reserve 110h/5 and all of 111h

for SFF 8079

Editorial changes only

Table 3.18 Alarm/Warning Flags Base definition <same> Remove bytes 118 and 119

for Table 3.18a

Table 3.18a Extended Status/Control n/a n/a Add Byte 118 for SFF 8431

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(double )(Rdiff + 8 * v7++) = -1.0 / v11;

(double )(a6 - a5 + v13 - 8) = v11;