Finisar | FCLF-8521-3 | Datasheet | Finisar FCLF-8521-3 network transceiver module

Finisar
Product Specification
1000BASE-T Copper SFP Transceiver
FCLF-8520/8521-3
Product Features
•
Up to 1.25Gb/s bi-directional data links
•
Hot-pluggable SFP footprint
•
Extended case temperature
range (0°C to +85°C )
•
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
serial bus
•
Applications
10/100/1000 BASE-T operation in host
systems with SGMII interface
•
1.25 Gigabit Ethernet over Cat
5 cable
Finisar’s FCLF-8520/8521-3 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.
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
Part Number
FCLF-8520-3
FCLF-8521-3
Link Indicator on RX_LOS Pin
Yes
No
© Finisar Corporation December 16, 2005 RevB
1000BASE-X auto-negotiation
enabled by default
No
Yes
Page 1
F i n i s a r
FCLF-8520/8521-3 1000BASE-T SFP Product Specification
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 Definition 0. Grounded within the module
3
7
Rate Select
No connection required
8
LOS
Loss of Signal indication.
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
RDReceiver 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
TDTransmitter Inverted DATA in. AC coupled
20
VEET
Transmitter ground (common with receiver ground)
1
Notes: 1. Circuit ground is connected to chassis ground
2. PHY disabled on TDIS > 2.0V or open, enabled on TDIS < 0.8V
3. 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
1
VeeT
2
TXFault
3
TX Disable
4
MOD-DEF(2)
5
MOD-DEF(1)
6
MOD-DEF(0)
7
Rate Select
8
LOS
9
VeeR
10
VeeR
VeeT
20
TD-
19
TD+
18
VeeT
17
VccT
16
VccR
15
VeeR
14
RD+
13
RD-
12
VeeR
11
Towards
ASIC
Figure 1. Diagram of host board connector block pin numbers and names
© Finisar Corporation December 16, 2005 RevB
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F i n i s a r
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
Supply Current
Symbol
Is
Min
Typ
320
Max
375
Units
mA
Input Voltage
Vcc
3.13
3.3
3.47
V
Maximum Voltage
Vmax
4
V
Surge Current
Isurge
30
mA
Notes/Conditions
1.2W max power over
full range of voltage
and temperature.
See caution note below
Referenced to GND
Hot plug above steady state
current. See caution note
below
Caution: Power consumption and surge current are higher than the specified 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.
Low-Speed Signals,
Electronic Characteristics
Parameter
SFP Output LOW
Symbol
VOL
SFP Output HIGH
VOH
SFP Input LOW
VIL
SFP Input HIGH
VIH
Min
0
Max
0.5
Units Notes/Conditions
V
4.7k to 10k pull-up to host_Vcc,
measured at host side of connector
host_Vcc - 0.5 host_Vcc + 0.3
V
4.7k to 10k pull-up to host_Vcc,
measured at host side of connector
0
0.8
V
4.7k to 10k pull-up to Vcc,
measured at SFP side of connector
2
Vcc + 0.3
V
4.7k to 10k pull-up to Vcc,
measured at SFP side of connector
Table 3. Low-speed signals, electronic characteristics
© Finisar Corporation December 16, 2005 RevB
Page 3
F i n i s a r
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
Symbol
fL
Min
Typ
125
Max
Units
MHz
Notes/Conditions
5-level encoding, per
IEEE 802.3
Zout,TX
100
Ohm Differential, for all
frequencies between
1MHz and 125MHz
Zin,RX
100
Ohm Differential, for all
frequencies between
1MHz and 125MHz
Table 4. High-speed electrical interface, transmission line-SFP
Max
1200
Units
mV
800
mV
Single ended
High-Speed Electrical Interface,
Host-SFP
Parameter
Single ended data input
swing
Single ended data output
swing
Rise/Fall Time
Tx Input Impedance
Rx Output Impedance
Symbol
Vinsing
Min
250
Voutsing
350
Typ
Notes/Conditions
Single ended
Tr,Tf
Zin
175
50
psec
Ohm
20%-80%
Single ended
Zout
50
Ohm
Single ended
Table 5. High-speed electrical interface, host-SFP
© Finisar Corporation December 16, 2005 RevB
Page 4
FCLF-8520/8521-3 1000BASE-T SFP Product Specification
V.
F i n i s a r
General Specifications
General
Parameter
Data Rate
Cable Length
Symbol
BR
L
Min
10
Typ
Max Units Notes/Conditions
1,000 Mb/sec IEEE 802.3 compatible.
See Notes 2 through 4 below
100
m
Category 5 UTP. BER <10-12
Table 6. General specifications
Notes:
1. Clock tolerance is +/- 50 ppm
2. By default, the FCLF-8520/8521-3 is a 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.
With a SERDES that does not support SGMII, the module will operate at 1000BASE-T
only.
VI. Environmental Specifications
The FCLF-8520/8521-3 has an extended range from 0°C to +85°C case temperature as
specified in Table 8.
Environmental
Specifications
Parameter
Operating Temperature
Storage Temperature
Symbol
Min
Typ
Max
Units
Top
0
85
°C
Tsto
-40
85
°C
Table 7. Environmental specifications
Notes/Conditions
Case temperature
Ambient temperature
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.”3
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”4 (Marvell document
number MV-S100649-00).
© Finisar Corporation December 16, 2005 RevB
Page 5
F i n i s a r
FCLF-8520/8521-3 1000BASE-T SFP Product Specification
Serial Bus Timing
Requirements
Parameter
I2C Clock Rate
Symbol
Min
0
Typ
Max
100,000
Units Notes/Conditions
Hz
Table 8. Serial bus timing requirements
VIII. Mechanical Specifications
The host-side of the FCLF-8520/8521-3 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. FCLF-8520/8521-3 mechanical dimensions
© Finisar Corporation December 16, 2005 RevB
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FCLF-8520/8521-3 1000BASE-T SFP Product Specification
F i n i s a r
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 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
www.finisar.com
© Finisar Corporation December 16, 2005 RevB
Page 7
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