Finisar AN-2030 - Manual (Page 5)

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers
F i n i s a r
9/26/02 Revision D Page 5
Identifier 1
The identifier value specifies the physical device described by the serial information. 2
This value shall be included in the serial data. The defined identifier values are shown in 3
table 3.2. Finisar SFP modules have this byte set to 03h. Finisar GBIC modules have 4
this byte set to 01h. 5
TABLE 3.2: Identifier values 6
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Value Description of physical device
00h Unknown or unspecified
01h GBIC
02h Module/connector soldered to motherboard
03h SFP
04-7Fh Reserved
80-FFh Vendor specific
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Extended Identifier 10
The extended identifier value provides additional information about the transceiver. 11
The field is set to 04h for all non-custom SFP and GBIC modules indicating serial ID 12
module definition. 13
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Connector 15
The connector value indicates the external connector provided on the interface. This 16
value shall be included in the serial data. The defined connector values are shown in 17
table 3.3. Note that 01h – 05h are not SFP compatible, and are included for 18
compatibility with GBIC standards. Finisar optical SFP modules currently have this byte 19
set to 07h (optical LC connector). GBIC modules have the byte set to 01h (SC).
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