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SFF-8436_R4.9.pdf
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2019-12-03
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8436 协议4.9版本,其中包含详细得协议、硬件接口、模块尺寸,用于40G 光模块得协议开发。Protocol 8436 version 4.9, including detailed protocol, hardware interface, module size, for the development of 40G optical module protocol.
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This document was developed by the SFF Committee prior to it
becoming the SFF TA (Technology Affiliate) TWG (Technical
Working Group) of the SNIA (Storage Networking Industry
Association) in 2016.
The information below should be used instead of the equivalent herein.
POINTS OF CONTACT: SFF TA TWG Chair Email:
sff-chair@snia.org.
LOCATION OF SFF DOCUMENTS: http://www.snia.org/sff/specifications.
Suggestions for improvement of this specification are welcome and should be
submitted to
http://www.snia.org/feedback.
If you are interested in participating in the activities of the SFF TA TWG, additional
information and the membership application can be found at:
http://www.snia.org/sff.
PUBLISHED SFF-8436 Rev 4.9
QSFP+ 4X 10 GB/S Pluggable Transceiver Page 1
SFF Committee documentation may be purchased in electronic form.
SFF specifications are available at
ftp://ftp.seagate.com/sff
SFF Committee
SFF-8436
Specification for
QSFP+ 4X 10 Gb/s Pluggable Transceiver
Rev 4.9 August 31, 2018
Secretariat: SFF Committee
Abstract: This specification defines the electrical (copper), the optical and the
mechanical characteristics of the pluggable Quad SFP+ Module/direct attach cable plug and
connector.
This document provides a common specification for systems manufacturers, system
integrators, and suppliers of drives. This is an internal working document of the SFF
Committee, an industry ad hoc group. This specification is intended to supersede INF-8438
by adding support for 10 Gb/s data rates and updates to the mechanical specification
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:
Tom Palkert I. Dal Allan
Technical Editor Chairman
Luxtera SFF Committee
2320 Camino Vida Roble 14426 Black Walnut Court
Carlsbad CA 92011 Saratoga, CA 95070
Ph: 952-200-8542 Ph: 408-867-6630
tpalkert at luxtera dot com endlcom at acm dot org
PUBLISHED SFF-8436 Rev 4.9
QSFP+ 4X 10 GB/S Pluggable Transceiver Page 2
EXPRESSION OF SUPPORT BY MANUFACTURERS
The following member companies of the SFF Committee voted in favor of this industry
specification.
Amphenol
Cinch
EMC
Emulex
ENDL
ETRI
FCI
Finisar
Hewlett Packard
HGST
JDS Uniphase
Lotes Tech
Luxtera
Mellanox
Molex
NetApp
NetLogic uSyst
Oclaro
Panduit
Sumitomo
Sun Microsystems
TE Connectivity
Volex
The following member companies of the SFF Committee voted against this industry
specification.
Avago
QLogic
The following member companies of the SFF Committee voted to abstain on this industry
specification.
Dell Computer
Foxconn
Intel
LSI
Luxshare-ICT
Sandisk
Seagate
Toshiba
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 a claim or
claims or of any patent rights in connection therewith. Members of the SFF Committee
which advise that a patent exists are required to provide 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.
PUBLISHED SFF-8436 Rev 4.9
QSFP+ 4X 10 GB/S Pluggable Transceiver Page 3
Change History:
Changes from Revision 3.5 to 3.6:
Section 1.1: Added descriptions for clauses 4 thru 7
Section 3:
Table 1 and 2: Added X to 10GFC column to match the 10GBE column.
Changed 'The overall package dimension shall conform to the indicated dimensions and
tolerances and the mounting features.' to: The overall package dimension shall conform to
the indicated dimensions and tolerances indicated in clause 5. The mounting features...
Changed from 'The electrical and optical specifications shall be compatible with….'
to 'The electrical and optical specifications may be compatible with …..'
Section 3 page 10 line 19: Add: ‘"For speeds above 6Gb/s the compliance board methodology
of IEEE802.3ba, FC-PI4 and SFF8431 should be used. Measurements taken with QSFP+
compliance boards should be corrected for any difference between the loss of these
compliance boards and the loss of the compliance boards specified in the standard.’
Section 4:
4.1.1.2: changed 'post' to 'asserting "low"’
4.1.1.5: Added the following text: 'The INTL pin is de-asserted “High” when byte 2 bit 0
(Data Not Ready)is read unless a flag is set (see 7.6.1.2).'
4.1.3.1: Changed 'Clause 6.6.5.2' to 'Clause 7.6.5.2'
4.1.3.2: Changed " For operation above 6 Gb/s see the appropriate specification for
required voltage swings. Note: for 10G Ethernet reference SFF-8431. For 40G Ethernet
operation reference 802.3ba." to "For operation above 6 GBd see the appropriate
specification, e.g. 802.3ba, FC-PI-4, FC-PI-5 or the InfiniBand specification. For 10G
Ethernet, see SFF-8431."
Deleted ‘(absolute value)’ after ‘1600mv’.
4.2.1: Change "… filtering shown in Figure 4", to "… filtering equivalent to that shown
in Figure 4".
4.2.1: In Table 6, added a reference to Figure 5 in the Condition column for Sustained
peak current at hot plug ... & Module Maximum Current Inrush....
4.2.1: At line 9, add a sentence "It is recommended that the 22 uF capacitors each have
an equivalent series resistance of 0.22 ohm."
Section 5:
5.1: Updated the two bottom images to show the same keying structure as the two top
images (modules).
5.3: Enlarged the scale of Fig. 8 to make it easier to read the dimensions and notes.
Figure 8: Added missing dimensions at the bottom of figure.
5.3.1: Figure 10: Change pad width from ‘0.60 +/-0.03’ to ‘0.55 -0, +0.08’
Figure 10 detail 2: Change the tolerances from ‘0.08 +/- 0.015’ to ‘0.10 +/-0.05’.
Figure 14: Deleted the MX1 product code
Figure 17A and 17B: Changed the dimension in section Y-Y from ‘.2mm’ to ‘2.0 mm’.
5.10: Updated IEC-xxx reference to IEC 61754-20. Updated TIA reference for dual LC to
TIA/EIA-604-10A.
Section 7:
7.1:Added the following text: 'This QSFP+ specification is based on the INF8438
specification however it is not backward compatible. Address 128 Page00 is used to
indicate the use of the QSFP+ memory map rather than the QSFP memory map.'
7.2.1: Changed reference from ‘clause 3.1.2’ to ‘clause 4.1.2’.
7.4: Changed reference from ‘clause 6.6’ to ‘clause 7.6’ ; changed reference from ‘clause
3.1.1.1’ to ‘clause 4.1.1.1’ ; changed reference from ‘clause 3.1.2’ to ‘clause 4.1.2’.
7.6: Changed the last byte designation in page 00 from ‘126’ to ‘128’
7.6: Changed ‘Page 03 is required if byte 2, bit 2 in the lower page is set high’ to
‘Page 03 is required if byte 2, bit 2 in the lower page is low.’
PUBLISHED SFF-8436 Rev 4.9
QSFP+ 4X 10 GB/S Pluggable Transceiver Page 4
7.6.1: Consolidated 3 columns in tables 17-47: single column now reads: Passive copper,
active copper and active optical.
7.6.1.2: Added: 'These flags may be masked. (See 7.6.1.6) '
7.6.1.4: Changed reference from ‘clause 6.6.1.3’ to ‘clause 7.6.1.3’
Table 24: Address 88: changed ‘RX’ to ‘TX’
7.6.2 Table 29: Added to byte 146 "Link length supported for 50/125 um fiber (OM4), units
of 2 m) when Byte 147 declares 850 nm VCSEL as defined in Table 37."
Table 38: Changed reserved bytes from ‘7-4 to ‘7-5’. Added 'Reserved for' in front of FDR
for bit 3 and in front of EDR for bit 4
Table 41: Address 220 changed from ‘FEC BER’ to ‘reserved’
Table 43: Added references to table 44.
Table 45: For Address 226 - 239, in the Description column, changed the entry (2 Bytes)
to (14 Bytes).
Table 46: address 208-223: Changed byte column from ‘8’ to ‘16’.
7.6.5.2: changed ‘clause 3.1.3’ to ‘clause 4.1.3’
Changes from revision 3.6 to 3.7:
Changed the title from ‘Qsfp+ Copper And Optical Modules’ to ‘QSFP+ 4X 10 Gbs Pluggable
Transceiver’
Section 2:
2.1 and 2.2: Added references.
Section 4:
4.1.1.5: The host needs to read both byte 2 and the flag field after completion of reset.
Defined bit 0 of Byte 6 in Table 20 to be Initialization complete Flag. Designated Byte
103 bit 0 as the mask bit for Initialization complete flag.
4.3: Added ‘Where ESD performance is not otherwise specified, e.g. in the InfiniBand
specification,’
Section 5:
5.3: Figure 9: Added ‘component free area’ to drawing
5.3.1: Figure 10: The accepted Rev 3.6 comment to change pad width from „0.60 +/-0.03‟ to
„0.55 -0, +0.08‟" was not implemented in Fig 10.
Added LPMode Deassert time to Table 15
Parameter Symbol Max Unit
Conditions
LPMode Deassert Time toff_LPMode 300 ms
Time for deassertion of LPMode (Vin:
LPMode=Vil) until module until the
module is fully functional
3
Changes from revision 3.7 to 3.8:
- Editorial review of formatting and font consistency throughout.
- Bitmapped figures 24-29 were reconstructed as tables.
- Identified figures that have been patched by Text Boxes need to be re-drawn.
Changes from revision 3.8 to 3.9:
- Replaced Figure 30
- Corrected sub-levels in Section 7.5
- Deleted bitmapped figures 24-29 which had been left for comparison in 3.8
Changes from revision 3.9 to 4.0:
- Changed 'Module Maximum Current with LPMode Pin asserted' and 'Module Maximum Current
with LPMode Pin deasserted' to 'Maximum instantaneous current with LPMode asserted' and
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