Finisar Product Specification 1000BASE-T Copper SFP Transceiver FCMJ-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 • 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 FCMJ-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 FCMJ-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 FCMJ-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 FCMJ-8520-3 FCMJ-8521-3 Link Indicator on RX_LOS Pin Yes No Finisar Corporation March 16, 2005 Rev H 1000BASE-X auto-negotiation enabled by default No Yes Page 1 F i n i s a r FCMJ-8520/8521-3 1000BASE-T SFP Product Specification 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 FCMJ-8521-3. Table 1. SFP to host connector pin assignments and descriptions Towards Bezel 1 VeeT 2 TXFault 3 TX Disable 4 MOD-DEF(2) 5 MOD-DEF(1) 6 MOD-DEF(0) 7 Rate Select 8 LOS 9 VeeR 10 VeeR VeeT 20 TD- 19 TD+ 18 VeeT 17 VccT 16 VccR 15 VeeR 14 RD+ 13 RD- 12 VeeR 11 Towards ASIC Figure 1. Diagram of host board connector block pin numbers and names Finisar Corporation March 16, 2005 Rev H Page 2 F i n i s a r FCMJ-8520/8521-3 1000BASE-T SFP Product Specification II. +3.3V Volt Electrical Power Interface The FCMJ-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 Input Voltage Vcc 3.13 3.3 3.47 V Maximum Voltage Vmax 4 V Surge Current Isurge 30 mA Notes/Conditions 1.2W max power over full range of voltage and temperature. See caution note below Referenced to GND 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 Symbol VOL SFP Output HIGH VOH SFP Input LOW VIL SFP Input HIGH VIH Min 0 Max 0.5 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 Table 3. Low-speed signals, electronic characteristics Finisar Corporation March 16, 2005 Rev H Page 3 F i n i s a r FCMJ-8520/8521-3 1000BASE-T SFP Product Specification 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 Rx Input Impedance Symbol fL Min Typ 125 Max Units MHz 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 Max 1200 Units mV 800 mV Single ended 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 Min 250 Voutsing 350 Typ Notes/Conditions Single ended Tr,Tf Zin 175 50 psec Ohm 20%-80% Single ended Zout 50 Ohm Single ended Table 5. High-speed electrical interface, host-SFP Finisar Corporation March 16, 2005 Rev H Page 4 F i n i s a r FCMJ-8520/8521-3 1000BASE-T SFP Product Specification V. General Specifications General Parameter Data Rate Cable Length Symbol BR 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 L Typ Notes: 1. Clock tolerance is +/- 50 ppm 2. By default, the FCMJ-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 FCMJ-8520/8521-3 has an extended range from 0°C to +85°C case temperature as specified in Table 8. Environmental Specifications Parameter Operating Temperature Storage Temperature Symbol Top Tsto Min 0 -40 Typ Max 85 85 Units °C °C Notes/Conditions Case temperature Ambient temperature Table 7. Environmental 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.”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). Finisar Corporation March 16, 2005 Rev H Page 5 F i n i s a r FCMJ-8520/8521-3 1000BASE-T SFP Product Specification 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 FCMJ-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. FCMJ-8520/8521-3 mechanical dimensions Finisar Corporation March 16, 2005 Rev H Page 6 FCMJ-8520/8521-3 1000BASE-T SFP Product Specification F i n i s a r 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 1308 Moffett Park Drive Sunnyvale, CA 94089-1133 Tel. 1-408-548-1000 Fax 1-408-541-6138 [email protected] www.finisar.com Finisar Corporation March 16, 2005 Rev H Page 7