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FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T SFP Product Specification F i n i s a r
V.
General Specifications
Parameter
Data Rate
Symbol
BR
Min
10
Typ
Max
1,000
Units
Mb/sec
Notes/Conditions
IEEE 802.3 compatible.
See Notes 2 through 4 below
Cable Length
L
100
m
Category 5 UTP. BER <10 -12
Table 6: General Specifications
Notes:
1. Clock tolerance is +/- 50 ppm
2. By default, the FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL are full duplex
devices in preferred master mode
3. Automatic crossover detection is enabled. External crossover cable is not required
4. 10/100/1000 BASE-T operation requires the host system to have an SGMII interface with no
clocks, and the module PHY to be configured per Application Note AN-2036. With a SERDES that
does not support SGMII, the module will operate at 1000BASE-T only.
VI. Environmental Specifications
The FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL have an industrial temperature
ranges from -40°C to +85°C case temperature as specified in Table 8.
Parameter
Symbol
Min
Typ
Max
Units
Notes/Conditions
Operating Temperature
Storage Temperature
T op
T sto
-40 85 °C Case temperature
-40 85 °C Ambient temperature
Table 7: Environment specifications
VII. Serial Communication Protocol
All Finisar SFPs support the 2-wire serial communication protocol outlined in the SFP MSA 1 .
These SFPs use an Atmel AT24C01A 128 byte E 2 PROM with an address of A0h. For details on
interfacing with the E 2 PROM, see the Atmel data sheet titled “AT24C01A/02/04/08/16 2-Wire
Serial CMOS E 2 PROM.” 4
The 1000BASE-T physical layer IC can also be accessed via the 2-wire serial bus at address ACh.
For details interfacing with the PHY IC, see Marvell data sheet titled “Alaska Ultra 88E1111
Integrated Gigabit Ethernet Transceiver” 5 (Marvell document number MV-S100649-00).
Parameter
I 2 C Clock Rate
Symbol
Min Typ Max
0 100,000
Units
Hz
Notes/Conditions
Table 8: Serial bus timing requirements
? Finisar Corporation May 18, 2010 Rev B.2
Page 5
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