FCL-8521-3 Finisar

Finisar Product Specification 1000BASE-T Copper GBIC Transceivers FCL-8520/8521-3 Product Features Up to 1.25Gb/s bi-directional data links RoHS compliant and Lead Free Extended operating temperature range (0C to +75C) Hot-pluggable Fully metallic enclosure for low EMI Low power (1.5W typical) Access to physical layer IC via 2- wire serial bus Applications 1.25 Gigabit Ethernet over Cat 5 cable Finisars FCL-8520/8521-3 1000BASE-T Copper GBIC transceivers are based on the 1 GBIC Specification Revision 5.5 . They are compatible with the Gigabit Ethernet and 2 3 1000BASE-T standards as specified in IEEE Std 802.3z and IEEE Std 802.3ab . The FCL-8520-3 uses the GBICs RX LOS pin for link indication, and 1000BASE-X auto-negotiation must be disabled on the host system. The FCL-8521-3 is compatible with 1000BASE-X auto-negotiation, but does not have a link indication feature (RX LOS is internally grounded). See AN-2032, Commonly Asked Questions 4 Regarding Auto-negotiation on Finisars 1000BASE-T GBICs , for a more complete explanation on the differences between the two models. PRODUCT SELECTION Part Number Link Indicator on RX LOS Pin Compatible with 1000BASE-X Auto-negotiation FCL-8520-3 Yes No FCL-8521-3 No Yes Finisar Corporation Page 1 Rev A, February 2006 FCL-8520/8521-3 1000BASE-T GBIC Product Specification Finisar I. GBIC to Host Connector Pin Out Pin Name Pin Sequence RX LOS* 1 2 GND 2 2 GND 3 2 MOD DEF(0) 4 2 MOD DEF(1) 5 2 MOD DEF(2) 6 2 TX DISABLE 7 2 GND 8 2 GND 9 2 GND 10 2 GND 11 1 -RX DAT 12 1 +RX DAT 13 1 GND 14 1 V 15 2 CC V 16 2 CC GND 17 1 +TX DAT 18 1 -TX DAT 19 1 GND 20 1 Note: RX LOS is used for link indication on the FCL- 8520-3, and is internally grounded on the FCL-8521-3 Table 1. GBIC to host connector pin assignment Sequence indicates the order in which pins make contact when the device is hot plugged. For additional information, see Table 3: Signal Definitions in the GBIC 1 Specification Revision 5.5. Finisar Corporation Page 2 Rev A, February 2006