FCLF-8520-3 FINISAR | Alldatasheet

Document overview

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Technical content

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 Link Indicator on RX_LOS Pin 1000BASE-X auto-negotiation enabled by default FCLF-8520-3 Yes No FCLF-8521-3 No Yes © Finisar Corporation December 16, 2005 RevB 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 FCLF-8521-3.

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

voltage is not allowed for continuous operation. Table 2. +3.3 Volt electrical power interface must be pulled up to host_Vcc. Table 3. Low-speed signals, electronic characteristics

All high-speed signals are AC-coupled internally. Table 4. High-speed electrical interface, transmission line-SFP Table 5. High-speed electrical interface, host-SFP

Data Rate BR 10 1,000 Mb/sec IEEE 802.3 compatible. Table 6. General specifications

  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. Table 7. Environmental specifications MSA1. These SFPs use an Atmel AT24C01A 128 byte E 2PROM with an address of A0h.

Table 8. Serial bus timing requirements Figure 2. FCLF-8520/8521-3 mechanical dimensions

FCLF-8520/8521-3 1000BASE-T SFP Product Specification Finisar IX. References 1. Small Form Factor Pluggable (SFP) Tr ansceiver 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 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 December 16, 2005 RevB Page 7