FCLF-8521-3 Finisar Corporation, FCLF-8521-3 Datasheet

TXRX RJ-45 SFP 1.25GB/S

FCLF-8521-3

Manufacturer Part Number
FCLF-8521-3
Description
TXRX RJ-45 SFP 1.25GB/S
Manufacturer
Finisar Corporation
Type
TX/RXr
Datasheet

Specifications of FCLF-8521-3

Features
Up to 1.25Gb/s Bi-Directional Data Links
Package
20SFP
Mounting
Snap Fit To Panel
Rise Time
0.175(Typ) ns
Operating Supply Voltage
3.13 to 3.47 V
For Use With/related Products
1000 Base-T Networks
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Convert From (adapter End)
-
Convert To (adapter End)
-
Other names
775-1003

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FCLF-8521-3
Manufacturer:
FINISAR
Quantity:
541
F i n i s a r
Product Features
Finisar’s FCLF-8520/8521-3 1000BASE-T Copper Small Form Pluggable (SFP)
transceivers are based on the SFP Multi Source Agreement (MSA)
with the Gigabit Ethernet and 1000BASE-T standards as specified in IEEE Std 802.3
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
FCLF-8520-3
FCLF-8521-3
© Finisar Corporation December 16, 2005 RevB
• Up to 1.25Gb/s bi-directional data links
• Hot-pluggable SFP footprint
• Extended case temperature
• 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
• 10/100/1000 BASE-T operation in host
Part Number
range (0°C to +85°C )
serial bus
systems with SGMII interface
1000BASE-T Copper SFP Transceiver
Link Indicator on RX_LOS Pin
Product Specification
FCLF-8520/8521-3
Yes
No
Applications
• 1.25 Gigabit Ethernet over Cat
5 cable
1000BASE-X auto-negotiation
enabled by default
1
. They are compatible
Yes
No
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2
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Related parts for FCLF-8521-3

FCLF-8521-3 Summary of contents

Page 1

... 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’ ...

Page 2

... Should be pulled up with 4.7k – 10k Ohms on host board to a voltage between 2.0 V and 3.6 V. MOD_DEF(0) pulls line low to indicate module is plugged in. 4. 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 Towards Bezel Figure 1 ...

Page 3

... FCLF-8520/8521-3 1000BASE-T SFP Product Specification II. +3.3V Volt Electrical Power Interface The FCLF-8520/8521-3 has an input voltage range of 3.3 V +/- 5%. The 4 V maximum voltage is not allowed for continuous operation. +3.3 Volt Electrical Power Interface Parameter Symbol Supply Current I Input Voltage V Maximum Voltage V max ...

Page 4

... FCLF-8520/8521-3 1000BASE-T SFP Product Specification IV. High-Speed Electrical Interface All high-speed signals are AC-coupled internally. High-Speed Electrical Interface, Transmission Line-SFP Parameter Line Frequency Tx Output Impedance Rx Input Impedance Table 4. High-speed electrical interface, transmission line-SFP High-Speed Electrical Interface, Host-SFP Parameter Symbol Single ended data input ...

Page 5

... L Notes: 1. Clock tolerance is +/- 50 ppm 2. By default, the FCLF-8520/8521 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. ...

Page 6

... I C Clock Rate Table 8. Serial bus timing requirements VIII. Mechanical Specifications The host-side of the FCLF-8520/8521-3 conforms to the mechanical specifications 1 outlined in the SFP MSA . The front portion of the SFP (part extending beyond the face plate of the host) is larger to accommodate the RJ-45 connector. See Figure 2 below for details ...

Page 7

... FCLF-8520/8521-3 1000BASE-T SFP Product Specification IX. References 1. Small Form Factor Pluggable (SFP) Transceiver 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 www.Atmel.com 5. “Alaska Ultra 88E1111 Integrated 10/100/1000 Gigabit Ethernet Transceiver”, Marvell Corporation ...

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