FCLF8520P2BTL COHERENT | Alldatasheet
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FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 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 stan- dards as specified in IEEE Std 802.32. The transceiver is RoHS compliant and per Directive 2011/65/EU3 and Finisar Appli- cation Note AN-2038. The 1000BASE-T physical layer IC (PHY) can be accessed via I2C, allowing access to all PHY settings and features.The FCLF8520P2BTL uses the SFP’s RX_LOS pin for link indication, and 1000BASE-X auto_x005F_xFFFE_ne- gotiation should be disabled on the host system. The FCLF8521P2BTL 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 Regard- ing 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. The FCLF8522 shall support both RX_LOS pin for link indication and 1000BASE-X auto-negotiation. FEATURES APPLICATIONS
- Up to 1.25Gb/s bi-directional data links
- Hot-pluggable SFP footprint
- Extended case temperature range (-40°C to +85°C )
- Fully metallic enclosure for low EMI
- RoHS compliant and Lead Free
- Low power dissipation (1.05 W typical)
- Compact RJ-45 connector assembly
- Access to physical layer IC via 2-wire serial bus
- 10/100/1000 BASE-T operation in host systems with SGMII interface FCLF8520P2BTL, FCLF8521P2BTL, FCLF-8522P2BTL Optical Transceivers 1000BASE-T RoHS Compliant Copper SFP Transceiver
- 1.25 Gigabit Ethernet over Cat 5 cable
Figure 1. Diagram of host board connector block pin numbers and names
1 VEET Transmitter Ground (Common with Receiver Ground) 1
2 TFAU LT Transmitter Fault.
7 Rate Select No connection required
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
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 TD- Transmitter Inverted DATA in. AC Coupled.
20 VEET Transmitter Ground (Common with Receiver Ground) 1
- Circuit ground is isolated from chassis ground
- PHY disabled on TDIS > 2.0V or open, enabled on TDIS < 0.8V
- LVTTL compatible with a maximum voltage of 2.5V. Not supported on FCLF8521P2BTL.
Table 1. SFP to host connector pin assignments and descriptions voltage is not allowed for continuous operation.
FCLF8520P2BTL, FCLF8521P2BTL, FCLF8522P2BTL III. Low-Speed Signals MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals (see section VII, “Serial Communication Proto- col”). Both MOD_DEF(1) and MOD_DEF(2) must be pulled up to host_Vcc. Parameter Symbol Min Max Unit Notes/Conditions SFP Output LOW VOL 0 0.5 V 4.7k to 10k pull-up to host_Vcc, measured at host side of connector SFP Output HIGH VOH host_Vcc - 0.5 host_Vcc + 0.3 V 4.7k to 10k pull-up to host_Vcc, measured at host side of connector SFP Input LOW VIL 0 0.8 V 4.7k to 10k pull-up to Vcc, measured at SFP side of connector SFP Input HIGH VIH 2 Vcc + 0.3 V 4.7k to 10k pull-up to Vcc, measured at SFP side of connector Table 3: Low-speed signals, electrical characteristics IV. High-Speed Electrical Interface All high-speed signals are AC-coupled internally. High-Speed Electrical Interface, Transmission Line - SFP Parameter Symbol Min Typ Max Units Notes/Conditions Line Frequency fL 125 MHz 5-level encoding, per IEEE 802.3 Tx Output Impedance Zout,TX 100 Ohm Differential, for all frequencies between 1MHz and 125MHz Rx Input Impedance Zin,RX 100 Ohm Differential, for all frequencies between 1MHz and 125MHz Table 3: Low-speed signals, electrical characteristics Parameter Symbol Min Typ Max Units Notes/Conditions Single ended data input swing Vinsing 250 1200 mV Single ended Single ended data out- put swing Voutsing 275 800 mV Single ended, can be modified by writing to the PHY’s internal registers. For more details, see Marvell datasheet5 Rise/Fall Time Tr,Tf 175 psec 20%-80% Tx Input Impedance Zin 50 Ohm Single ended Rx Output Impedance Zout 50 Ohm Single ended
FCLF8520P2BTL, FCLF8521P2BTL, FCLF8522P2BTL V. General Specifications Parameter Symbol Min Typ Max Unit Ref. Data Rate BR 10 1,000 Mb/sec 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. Environmental Specifications Symbol Min Typ Max Units Ref. Case Operating Temperature Top -40 85 °C Case temperature Storage Temperature Tsto -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 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.”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 Symbol Min Typ Max Units Notes/Conditions I2C Clock Rate 0 100,000 Hz Table 8: Serial bus timing requirements
modate the RJ-45 connector. See Figure 2 below for details. Figure 2. FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL mechanical dimensions
FCLF8520P2BTL, FCLF8521P2BTL, FCLF8522P2BTL © 2023 Coherent Corp. Legal notices : coherent.com/legal photonics.sales@coherent.com www.coherent.com IX. References 1. Small Form Factor Pluggable (SFP) Transceiver Multi-Source Agreement (MSA), September 2000. Documentation is cur- rently available at Finisar upon request. 2. IEEE Std 802.3, 2002 Edition. IEEE Standards Department, 2002 3. Directive 2011/65/EU of the European Council Parliament and of the Council, “on the restriction of the use of certain hazardous substances in electrical and electronic equipment”. 08-June 2011, which supercedes the previous ROHS Directive 2002/95/EC 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