Finisar AN-2030 - Manual (Page 12)

AN-2030: Digital Diagnostic Monitoring Interface for Optical Transceivers
F i n i s a r
9/26/02 Revision D Page 12
Options 1
The bits in the option field shall specify the options implemented in the transceiver as 2
described in table 3.6. StandardFinisar SFP transceivers do not implement TX_FAULT 3
or RATE_SELECT, so byte 65 set to 00010010b. 4
5
Table 3.6: Option values 6
Data
Address
Bit Description of option
64 7-0 Reserved
65 7-6 Reserved
65 5 Indicates if RATE_SELECT is implemented. Finisar does not
implement this feature.
NOTE: Lack of implemention does not indicate lack of
simultaneous compliance with multiple standard rates.
Compliance with particular standards should be determined
from Transceiver Code Section (Table 3.4)
65 4 TX_DISABLE is implemented and disables the serial output.
65 3 TX_FAULT signal implemented.
65 2 Loss of Signal implemented, signal inverted from definition in
Table 1 of the SFP MSA.
NOTE: This is not standard SFP/GBIC behavior and should
be avoided, since non-interoperable behavior results.
65 1 Loss of Signal implemented, signal as defined in Table 1 of
the SFP MSA.
65 0 Reserved
7
BR, max 8
The upper bit rate limit at which the transceiver will still meet its specifications (BR, max) 9
is specified in units of 1% above the nominal bit rate. A value of zero indicates that this 10
field is not specified. 11
12
BR, min 13
The lower bit rate limit at which the transceiver will still meet its specifications (BR, min) 14
is specified in units of 1% below the nominal bit rate. A value of zero indicates that this 15
field is not specified. 16
17
Vendor SN 18
The vendor serial number (vendor SN) is a 16 character field that contains ASCII 19
characters, left-aligned and padded on the right with ASCII spaces (20h), defining the 20
vendor’s serial number for the transceiver. A value of all zero in the 16-byte field 21
indicates that the vendor PN is unspecified. 22