FCLF8520P2BTL - Finisar Corporation

Finisar

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)1. They

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

802.32. They are RoHS compliant and lead-free per Directive 2002/95/EC3 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

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T SFP Product SpecificationFinisar

I. SFP to Host Connector Pin Out

Pin Symbol Name/Description Note

1 VEET Transmitter ground (common with receiver ground) 1

2 TFAULT Transmitter Fault. Not supported

3 TDIS Transmitter Disable. PHY disabled on high or open 2

4 MOD_DEF(2) Module Definition 2. Data line for serial ID 3

5 MOD_DEF(1) Module Definition 1. Clock line for serial ID 3

6 MOD_DEF( 0 ) Module Defini t i on 0. Grounded withi n t he module 3

7 Rate Select No connection required

8 LOS Loss of Signal indicati o n. 4

9 VEER Receiver ground (common with transmitter ground) 1

10 VEER Receiver ground (common with transmitter ground) 1

11 VEER Receiver ground (common with transmitter ground) 1

12 RD- Receiver Inverted DATA out. AC coupled

13 RD+ Receiver Non-inverted DATA out. AC coupled

14 VEER Receiver ground (common with transmitter ground) 1

15 VCCR Receiver power supply

16 VCCT Transmitter power supply

17 VEET Transmitter ground (common with receiver ground) 1

18 TD+ Transmitter Non-Inverted DATA in. AC coupled

19 TD- Transmitter Inverted DATA in. AC coupled

20 VEET Transmitter ground (common with receiver ground) 1

Notes: 1. Circuit ground is isolated fro m chassis ground

2. PHY disabled on TDIS > 2.0V or open, enabled on TDIS < 0.8V

3. Should be pull ed up with 4.7k – 10k Ohm s on ho st boa rd to a volt a ge 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 FCLF8521P2BTL.

Table 1. SFP to host connector pin assignments an d de s criptions

VeeT

VeeR

TD-

TD+

RD+

RD-

VccT

VccR

VeeT

VeeR

TXFault

MOD-DEF(2)

MOD-DEF(1)

MOD-DEF(0)

Rate Select

LOS

Towards

ASIC

Towards

Bezel

TX Disable

VeeR

Figure 1. Diagram of host board connector block pin numbers and names

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T SFP Product SpecificationFinisar

II. +3.3V Volt Electrical Power Interface

The FCLF8520P2BTL, FCLF8521 P2BTL and FCLF8522P2BTL have an input voltage range of 3.3 V +/- 5%. The 4 V

maximum voltage is not allowed fo r continuous operation.

Parameter Symbol Min Typ Max Units Notes/Conditions

Supply Current Is 320 375 mA 1.2W max power over

full range of voltage

and temperature.

See caution note below

Input Voltage Vcc 3.13 3.3 3.47 VReferenced to GND

Maximum Voltag e Vmax 4 V

Total Maximum Current

including Surge Current Isurge 405 mA Hot plug above steady state

current. See caution no te

below

Caution: Power consumption and surge current are higher than the specific values in the SFP MSA

Table 2, +3.3 Volt electrical power interface

III. Low-Speed Signals

MOD_DEF(1) (SCL) and MOD_DEF(2) (SDA), are open drain CMOS signals (see section VII, “Serial

Communication Protocol”). Both MOD_DEF(1) and MOD_DEF(2) must be pulled up to host_Vcc.

Parameter Symbol Min Max Units Notes/Conditions

SFP Output LOW VOL 0 0.5 V 4.7k to 10k pull-up to host_Vcc,

measured at host side of

connector

SFP Output HIGH VOH host_Vcc -

0.5 host_Vcc +

0.3 V 4.7k to 10k pull-up to host_Vcc,

measured at host side of

connector

SFP Input LOW VIL 0 0.8 V 4.7k to 10k pull-up to Vcc,

measured at SFP side of

connector

SFP Input HIGH VIH 2 Vcc + 0.3 V 4.7 k to 10k pull-up to Vcc,

measured at SFP side of

connector

Table 3: Low-speed signals, electrical characteristics

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T SFP Product SpecificationFinisar

IV. High-Speed Electrical Interface

All high-speed signals are AC-coupled internally.

High-Speed Electrical Interface, Transmission Line - SFP

Parameter Symbol Min Typ Max Units Notes/Conditions

Line Frequency fL 125 MHz 5-level encoding, per IEEE

802.3

Tx Output Impedance Zout,TX 100 Ohm Differential, for all

frequencies between 1MHz

and 125MHz

Rx Input Impedance Zin,RX 100 Ohm Differential, for all

frequencies between 1MHz

and 125MHz

Table 4: High-speed electrical interface, transmission lin e-SFP

High-Speed Electrical Interface, Host-SFP

Parameter Symbol Min Typ Max Units Notes/Conditions

Single ended data input

swing Vinsing 250 1200 mV Single ended

Single ended data output

swing Voutsing 275 800 mV Single ended, can be modified by writing

to the PHY’s internal registers. For more

details, see Marvell datasheet5

Rise/Fall Time T

,Tf 175 psec 20%-80%

Tx Input Impedance Zin 50 Ohm Single ended

Rx Output Impedance Zou

50 Ohm Single ended

Table 5: High-Speed electrical interface, host-SFP

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T SFP Product SpecificationFinisar

V. General Specifications

Parameter Symbol Min Typ Max Units Notes/Conditions

Data Rate BR 10 1,000 Mb/sec IEEE 802.3 compatible.

See Notes 2 through 4 below

Cable Length L 100 mCategory 5 UTP. BER <10-12

Table 6: General Specifications

Notes:

1. Clock tolerance is +/- 50 ppm

2. By default, the FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL are full duplex

devices 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. With a SERDES that

does not support SGMII, the module will operate at 1000BASE-T only.

VI. Environmental Specifications

The FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL have an industrial temperature

ranges from -40°C to +85°C case temperature as specified in Table 8.

Parameter Symbol Min Typ Max Units Notes/Conditions

Operating Temperature To

-40 85 °C Case temperature

Sto rage Temperature Tsto -40 85 °C Ambient temperature

Table 7: Environment specifications

VII. Serial Communication Protocol

All Finisar SFPs support the 2-wire serial communication protocol outlined in the SFP MSA1.

These SFPs use an Atmel AT24C01A 128 byte E2PROM with an address of A0h. For details on

interfacing with the E2PROM, see the Atmel data sheet titled “AT24C01A/02/04/08/16 2-Wire

Serial CMOS E2PROM.”4

The 1000BASE-T physical layer IC can also be accessed via the 2-wire serial bus at address ACh.

For details interfacing with the PHY IC, see Marvell data sheet titled “Alaska Ultra 88E1111

Integrated Gigabit Ethernet Transceiver”5 (Marvell document number MV-S100649-00).

Parameter Symbol Min Typ Max Units Notes/Conditions

I2C Clock Rate 0 100,000 Hz

Table 8: Serial bus timing requirements

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T SFP Product SpecificationFinisar

VIII. Mechanical Specifications

The host-side of the FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL conforms to the

mechanical specifications outlined in the SFP MSA1. 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.

Figure 2. FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL mechanical dimensions

FCLF8520P2BTL, FCLF8521P2BTL and FCLF8522P2BTL 1000BASE-T SFP Product SpecificationFinisar

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

3. Directive 2002/95/EC of the European Council Parliament and of the Council, “on

the restriction of the use of certain hazardous substances in electrical and electronic

equipment.” January 27, 2003.

4. “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM”, Atmel Corporation.

www.Atmel.com

5. “Alaska Ultra 88E1111 Integrated 10/100/1000 Gigabit Ethernet Transceiver”,

Marvell Corporation. www.marvell.com

X. For More Information

Finisar Corporation

1389 Moffett Park Drive

Sunnyvale, CA 94089-1133

Tel. 1-408-548-1000

Fax 1-408-541-6138

sales@finisar.com