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Technical content

1000BASE-T RoHS Compliant Copper SFP Transceiver FCLF8520P2BTL / FCLF8521P2BTL / FCLF8522P2BTL Product Features

  • 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

Applications

  • 1.25 Gigabit Ethernet over Cat 5 cable Finisar’s 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 standards as specified in IEEE Std 802.32. The transceiver is RoHS compliant and per Directive 2011/65/EU 3 and Finisar Application 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 - negotiation 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 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. The FCLF8522 shall support both RX_LOS pin for link indication and 1000BASE-X auto-negotiation. PRODUCT SELECTION Part Number Link Indicator on RX_LOS Pin 1000BASE-X auto-negotiation enabled by default FCLF8520P2BTL Yes No FCLF8521P2BTL No Yes  Finisar Corporation July 2015 Rev E Page 1

1 VEET Transmitter ground (common with receiver ground) 1

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

20 VEET Transmitter ground (common with receiver ground) 1

  1. PHY disabled on TDIS > 2.0V or open, enabled on TDIS < 0.8V

MOD_DEF(0) pulls line low to indicate module is plugged in.

  1. LVTTL compatible with a maximum voltage of 2.5V. Not supported on FCLF8521P2BTL.

Table 1. SFP to host connector pin assignments and descriptions Figure 1. Diagram of host board connector block pin numbers and names

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL Product Specification II. +3.3V Volt Electrical Power Interface The FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL have an input voltage range of 3.3 V +/- 5%. The 4 V maximum voltage is not allowed for continuous operation. Parameter Symbol Min Typ Max Units Notes/Conditions Supply Current Is 320 375 mA 1.2W max power over full range of voltage and temperature. See caution note below Input Voltage Vcc 3.13 3.3 3.47 V Referenced to GND Maximum Voltage Vmax 4 V Total Maximum Current including Surge Current Isurge 405 mA Hot plug above steady state current. See caution note below Caution: Power consumption and surge current are higher than the specific 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. Parameter Symbol Min Max Units 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  Finisar Corporation July 2015 Rev E Page 3

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL Product Specification 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 4: High-speed electrical interface, transmission line-SFP High-Speed Electrical Interface, Host-SFP Parameter Symbol Min Typ Max Units Notes/Conditions Single ended data input swing Vinsing 250 1200 mV Single ended Single ended data output 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 Table 5: High-Speed electrical interface, host-SFP  Finisar Corporation July 2015 Rev E Page 4

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL Product Specification V. General Specifications Parameter Symbol Min Typ Max Units Notes/Conditions 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. Parameter Symbol Min Typ Max Units Notes/Conditions 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 communicat ion protocol outlined in the SFP MSA These SFPs use an Atmel AT24C01A 128 byte E 2PROM with an address of A0h. For details on interfacing with the E 2PROM, 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  Finisar Corporation July 2015 Rev E Page 5

Figure 2. FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL mechanical dimensions

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL Product Specification 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 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 E 2PROM”, 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  Finisar Corporation July 2015 Rev E Page 7