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Product Specification

1000BASE-T RoHS Compliant Copper SFP Transceiver

FCLF8520P2BTL / FCLF8521P2BTL / FCLF8522P2BTL

Product Features

• Up to 1.25Gb/s bi-directional data links

• Hot-pluggable SFP footprint

• Extended case temperature range

(-40°C to +85°C )

• Fully metallic enclosure for low EMI

• RoHS compliant and Lead Free

• 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 FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T Copper Small

Form Pluggable (SFP) transceivers are based on the SFP Multi Source Agreement (MSA)

. They

are compatible with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std

802.3

. They are RoHS compliant and lead-free per Directive 2002/95/EC

and Finisar Application

Note AN-2038. The 1000BASE-T physical layer IC (PHY) can be accessed via I2C, allowing

access to all PHY settings and features.

The FCLF8520P2BTL uses the SFP’s RX_LOS pin for link indication, and 1000BASE-X auto-

negotiation should be disabled on the host system. The FCLF8521P2BTL 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. The FCLF8522 shall support both RX_LOS pin for link

indication and 1000BASE-X auto-negotiation.

PRODUCT SELECTION

Part Number Link Indicator on RX_LOS Pin 1000BASE-X auto-negotiation enabled by default

FCLF8520P2BTL Yes No

FCLF8521P2BTL No Yes

FCLF8522P2BTL Yes Yes

1 2 3 4 5 6 7

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