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Finisar
Product Specification
1000BASE-T Copper SFP Transceiver FCLF-8520/8521-3
Product Features * * * * * * * * * Up to 1.25Gb/s bi-directional data links Hot-pluggable SFP footprint Extended case temperature range (0C to +85C ) Fully metallic enclosure for low EMI Low power dissipation (1.05 W typical) Compact RJ-45 connector assembly RoHS compliant and Lead Free Access to physical layer IC via 2-wire serial bus 10/100/1000 BASE-T operation in host systems with SGMII interface Applications * 1.25 Gigabit Ethernet over Cat 5 cable
Finisar's FCLF-8520/8521-3 1000BASE-T Copper Small Form Pluggable (SFP) transceivers are based on the SFP Multi Source Agreement (MSA)1. They are compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std 802.32. The 1000BASE-T physical layer IC (PHY) can be accessed via I2C, allowing access to all PHY settings and features. The FCLF-8520-3 uses the SFP's RX_LOS pin for link indication, and 1000BASE-X auto-negotiation should be disabled on the host system. The FCLF-8521-3 is compatible with 1000BASE-X auto-negotiation, but does not have a link indication feature (RX_LOS is internally grounded). See AN-2036, "Frequently Asked Questions Regarding Finisar's 1000BASE-T SFPs", for a more complete explanation on the differences between the two models and details on applications issues for the products. PRODUCT SELECTION
Part Number FCLF-8520-3 FCLF-8521-3 Link Indicator on RX_LOS Pin Yes No 1000BASE-X auto-negotiation enabled by default No Yes Page 1
(c) Finisar Corporation December 16, 2005 RevB
FCLF-8520/8521-3 1000BASE-T SFP Product Specification
Finisar
I.
SFP to Host Connector Pin Out
Pin Symbol Name/Description Note 1 VEET Transmitter ground (common with receiver ground) 1 2 TFAULT Transmitter Fault. Not supported 3 TDIS Transmitter Disable. PHY disabled on high or open 2 4 MOD_DEF(2) Module Definition 2. Data line for serial ID 3 5 MOD_DEF(1) Module Definition 1. Clock line for serial ID 3 6 MOD_DEF(0) Module Definition 0. Grounded within the module 3 7 Rate Select No connection required 8 LOS Loss of Signal indication. 4 9 VEER Receiver ground (common with transmitter ground) 1 10 VEER Receiver ground (common with transmitter ground) 1 11 VEER Receiver ground (common with transmitter ground) 1 12 RDReceiver Inverted DATA out. AC coupled 13 RD+ Receiver Non-inverted DATA out. AC coupled 14 VEER Receiver ground (common with transmitter ground) 1 15 VCCR Receiver power supply 16 VCCT Transmitter power supply 17 VEET Transmitter ground (common with receiver ground) 1 18 TD+ Transmitter Non-Inverted DATA in. AC coupled 19 TDTransmitter Inverted DATA in. AC coupled 20 VEET Transmitter ground (common with receiver ground) 1 Notes: 1. Circuit ground is connected to chassis ground 2. PHY disabled on TDIS > 2.0V or open, enabled on TDIS < 0.8V 3. Should be pulled up with 4.7k - 10k Ohms on host board to a voltage between 2.0 V and 3.6 V. MOD_DEF(0) pulls line low to indicate module is plugged in. 4. LVTTL compatible with a maximum voltage of 2.5V. Not supported on FCLF-8521-3. Table 1. SFP to host connector pin assignments and descriptions
VeeT 1 2 3 4 VeeT TDTXFault TD+ TX Disable VeeT MOD-DEF(2) VccT
20 19 18 17 16 15 14 13 12 11
Towards Bezel
5 6 7 8 9 10
MOD-DEF(1) VccR MOD-DEF(0) VeeR Rate Select RD+ LOS RDVeeR VeeR VeeR
Towards ASIC
Figure 1. Diagram of host board connector block pin numbers and names
(c) Finisar Corporation December 16, 2005 RevB
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FCLF-8520/8521-3 1000BASE-T SFP Product Specification
Finisar
II.
+3.3V Volt Electrical Power Interface
The FCLF-8520/8521-3 has an input voltage range of 3.3 V +/- 5%. The 4 V maximum voltage is not allowed for continuous operation. +3.3 Volt Electrical Power Interface
Parameter Supply Current Symbol Is Min Typ 320 Max 375 Units mA Notes/Conditions 1.2W max power over full range of voltage and temperature. See caution note below Referenced to GND
Input Voltage Maximum Voltage Surge Current
Vcc Vmax Isurge
3.13
3.3
3.47 4 30
V V mA
Hot plug above steady state current. See caution note below Caution: Power consumption and surge current are higher than the specified values in the SFP MSA Table 2. +3.3 Volt electrical power interface
III. Low-Speed Signals MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals (see section VII, "Serial Communication Protocol"). Both MOD_DEF(1) and MOD_DEF(2) must be pulled up to host_Vcc.
Low-Speed Signals, Electronic Characteristics
Parameter SFP Output LOW SFP Output HIGH SFP Input LOW SFP Input HIGH Symbol VOL VOH VIL VIH Units Notes/Conditions V 4.7k to 10k pull-up to host_Vcc, measured at host side of connector host_Vcc - 0.5 host_Vcc + 0.3 V 4.7k to 10k pull-up to host_Vcc, measured at host side of connector 0 0.8 V 4.7k to 10k pull-up to Vcc, measured at SFP side of connector 2 Vcc + 0.3 V 4.7k to 10k pull-up to Vcc, measured at SFP side of connector Min 0 Max 0.5
Table 3. Low-speed signals, electronic characteristics
(c) Finisar Corporation December 16, 2005 RevB
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FCLF-8520/8521-3 1000BASE-T SFP Product Specification
Finisar
IV. High-Speed Electrical Interface All high-speed signals are AC-coupled internally. High-Speed Electrical Interface, Transmission Line-SFP
Parameter Line Frequency Tx Output Impedance Notes/Conditions 5-level encoding, per IEEE 802.3 Zout,TX 100 Ohm Differential, for all frequencies between 1MHz and 125MHz Zin,RX 100 Ohm Differential, for all frequencies between 1MHz and 125MHz Table 4. High-speed electrical interface, transmission line-SFP Symbol fL Min Typ 125 Max Units MHz
Rx Input Impedance
High-Speed Electrical Interface, Host-SFP
Parameter Single ended data input swing Single ended data output swing Rise/Fall Time Tx Input Impedance Rx Output Impedance Symbol Vinsing Voutsing Tr,Tf Zin Zout Min 250 350 175 50 50 Typ Max 1200 800 Units mV mV psec Ohm Ohm Notes/Conditions Single ended Single ended 20%-80% Single ended Single ended
Table 5. High-speed electrical interface, host-SFP
(c) Finisar Corporation December 16, 2005 RevB
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FCLF-8520/8521-3 1000BASE-T SFP Product Specification
Finisar
V.
General Specifications
General
Parameter Data Rate Cable Length Symbol BR L Min 10 Max Units Notes/Conditions 1,000 Mb/sec IEEE 802.3 compatible. See Notes 2 through 4 below 100 m Category 5 UTP. BER <10-12 Table 6. General specifications Typ
Notes: 1. Clock tolerance is +/- 50 ppm 2. By default, the FCLF-8520/8521-3 is a full duplex device 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 FCLF-8520/8521-3 has an extended range from 0C to +85C case temperature as specified in Table 8. Environmental Specifications
Parameter Operating Temperature Storage Temperature Symbol Min Typ Max Units Top 0 85 C Tsto -40 85 C Table 7. Environmental specifications Notes/Conditions Case temperature Ambient temperature
VII. Serial Communication Protocol All Finisar SFPs support the 2-wire serial communication protocol outlined in the SFP MSA1. These SFPs use an Atmel AT24C01A 128 byte E2PROM with an address of A0h. For details on interfacing with the E2PROM, see the Atmel data sheet titled "AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM."3 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"4 (Marvell document number MV-S100649-00).
(c) Finisar Corporation December 16, 2005 RevB
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FCLF-8520/8521-3 1000BASE-T SFP Product Specification
Finisar
Serial Bus Timing Requirements
Parameter I2C Clock Rate Symbol Min 0 Typ Max 100,000 Units Notes/Conditions Hz
Table 8. Serial bus timing requirements
VIII. Mechanical Specifications The host-side of the FCLF-8520/8521-3 conforms to the mechanical specifications outlined in the SFP MSA1. The front portion of the SFP (part extending beyond the face plate of the host) is larger to accommodate the RJ-45 connector. See Figure 2 below for details.
Figure 2. FCLF-8520/8521-3 mechanical dimensions (c) Finisar Corporation December 16, 2005 RevB
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FCLF-8520/8521-3 1000BASE-T SFP Product Specification
Finisar
IX. References 1. Small Form Factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA), September 2000. Documentation is currently available at Finisar upon request. 2. IEEE Std 802.3, 2002 Edition. IEEE Standards Department, 2002. 4. "AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM", Atmel Corporation. www.Atmel.com 5. "Alaska Ultra 88E1111 Integrated 10/100/1000 Gigabit Ethernet Transceiver", Marvell Corporation. www.marvell.com
X.
For More Information
Finisar Corporation 1389 Moffett Park Drive Sunnyvale, CA 94089-1133 Tel. 1-408-548-1000 Fax 1-408-541-6138 sales@finisar.com www.finisar.com
(c) Finisar Corporation December 16, 2005 RevB
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