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參數(shù)資料
| 型號(hào)： | FWLF2519C1C49 |
| 元件分類(lèi)： | 光收發(fā) |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 1483-1498nm, 1250Mbps(Tx), 1250Mbps(Rx), SURFACE MOUNT, SFP CONNECTOR |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大小： | 291K |
| 代理商： | FWLF2519C1C49 |
FWLF2519C1Cxx Smart SFP Product Specification January 2011
F i n i s a r
Finisar Corporation January 2011 Rev C
Page 4
VII. Digital Diagnostic Functions
Finisar Smart SFP support the 2-wire serial communication protocol as defined in the
SFP MSA
1.
Additionally, the Finisar Smart SFP provides a unique enhanced digital diagnostic
monitoring interface, which allows real-time access to device operating parameters such
as transceiver temperature, laser bias current, transmitted optical power, received optical
power and transceiver supply voltage. It also defines a sophisticated system of alarm and
warning flags, which alerts end-users when particular operating parameters are outside of
a factory-set normal range.
The SFP MSA defines a 256-byte memory map in E2PROM that is accessible over a
2-wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic
monitoring interface makes use of the 8 bit address 1010001X (A2h), A0h stores static
information including product and vendor IDs while A2h contains real-time diagnostic
data.
The operating and diagnostics information is monitored and reported by a Digital
Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed
through a 2-wire serial interface. When the serial protocol is activated, the serial clock
signal (SCL) is generated by the host. The positive edge clocks data into the SFP
transceiver into segments of the E2PROM that are not write-protected. The negative
edge clocks data from the SFP transceiver. The serial data signal (SDA) is bi-directional
for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and
end of serial protocol activation. The memories are organized as a series of 8-bit data
words that can be addressed individually or sequentially.
For more information, please contact Finisar.
Digital diagnostics for the Smart SFP are internally calibrated by default.
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