1 Gigabit 1000BASE-T Copper RoHS Compliant GBIC (FCL-8520/8521-3)
Finisar's FCL-8520/8521-3 1000BASE-T Copper GBIC transceivers are based on the GBIC Specification Revision 5.5. They are compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std 802.3z and IEEE Std 802.3ab.
The FCL-8520-3 uses the GBIC’s 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 Regarding Auto-negotiation on Finisar’s 1000BASE-T GBICs”, for a more complete explanation on the differences between the two models.
Product Features
1 Gigabit RoHS Compliant 1000BASE-T Copper GBIC Transceivers Product Specification Sheet
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