FCLF-8520-3

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 (0°C to +85°C ) 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 © 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 © Finisar Corporation December 16, 2005 RevB Page 2 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 © Finisar Corporation December 16, 2005 RevB Page 3 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 © Finisar Corporation December 16, 2005 RevB Page 4 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