FCL-8520-3 Datasheet, PDF (1/7 Pages) Finisar Corporation. – 1000BASE-T Copper GBIC Transceivers

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 (0°C to +75°C)
• 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
Finisar’s FCL-8520/8521-3 1000BASE-T Copper GBIC transceivers are based on the
GBIC Specification Revision 5.5¹. They are compatible with the Gigabit Ethernet and
1000BASE-T standards as specified in IEEE Std 802.3z² and IEEE Std 802.3ab³.
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”⁴, for a more complete
explanation on the differences between the two models.
PRODUCT SELECTION
Part Number
FCL-8520-3
FCL-8521-3
Link Indicator on RX_LOS Pin
Yes
No
Compatible with 1000BASE-X
Auto-negotiation
No
Yes
© Finisar Corporation
Rev A, February 2006
Page 1