FINISAR FCM-8521-3

Finisar
Product Specification
1000BASE-T Copper GBIC Transceivers
FCM-8520/8521-3
Product Features
•
•
•
•
•
•
Up to 1.25Gb/s bi-directional
data links
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 2wire serial bus
Applications
•
1.25 Gigabit Ethernet over Cat 5
cable
Finisar’s FCM-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 FCM-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 FCM-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
FCM-8520-3
FCM-8521-3
 Finisar Corporation
Rev A, Feb 2003
Link Indicator on RX_LOS Pin
Yes
No
Compatible with 1000BASE-X
Auto-negotiation
No
Yes
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F i n i s a r
FCM-8520/8521-3 1000BASE-T GBIC Product Specification
I.
GBIC to Host Connector Pin Out
Pin Name
Pin #
Sequence
RX_LOS*
1
2
GND
2
2
GND
3
2
MOD_DEF(0)
4
2
MOD_DEF(1)
5
2
MOD_DEF(2)
6
2
TX_DISABLE
7
2
GND
8
2
GND
9
2
GND
10
2
GND
11
1
-RX_DAT
12
1
+RX_DAT
13
1
GND
14
1
VCC
15
2
VCC
16
2
GND
17
1
+TX_DAT
18
1
-TX_DAT
19
1
GND
20
1
Note: RX_LOS is used for link indication on the FCM8520-3, and is internally grounded on the FCM-8521-3
Table 1. GBIC to host connector pin assignment
“Sequence” indicates the order in which pins make contact when the device is hot
plugged. For additional information, see “Table 3: Signal Definitions” in the GBIC
Specification Revision 5.5.1
 Finisar Corporation
Rev A, Feb 2003
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F i n i s a r
FCM-8520/8521-3 1000BASE-T GBIC Product Specification
II.
+5V Volt Electrical Power Interface
The FCM-8520/8521-3 has an extended input voltage range of 4.5 to 5.5 V, compared to
the GBIC standard of 4.25 to 5.25 V. The 6V maximum voltage is not allowed for
continuous operation.
+5 Volt Electrical Power
Interface
Parameter
Supply Current
Symbol
Is
Min
Typ
310
Max
375
Units
mA
Input Voltage
Vcc
4.5
5
5.5
V
Maximum Voltage
Vmax
6
V
Surge Current
Isurge
450
mA
Notes/Conditions
1.7W max power over
full range of voltage
and temperature.
See Note 1.
Referenced to GND.
Hot plug. See Note 1.
Table 2. +5 Volt electrical power interface
Note:
1.
Caution: Power consumption and inrush current are higher than the specified
values in the GBIC Specification Rev 5.51.
III. Low-Speed Signals
RX_LOS is a TTL signals as described in Table 3 and 4. 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. For more detailed information, see sections 5.3.1 – 5.3.8 in the GBIC
Specification Rev. 5.51.
Low-Speed Signals,
Electronic Characteristics
Parameter
GBIC Output LOW
GBIC Output HIGH
GBIC Input LOW
GBIC Input HIGH
 Finisar Corporation
Rev A, Feb 2003
Symbol
VOL
Min
0
Max
0.5
Units Notes/Conditions
V
4.7k to 10k pull-up to host_Vcc,
measured at host side of connector
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
VIL
0
0.8
V
4.7k to 10k pull-up to Vcc,
measured at GBIC side of
connector
VIH
2
Vcc + 0.3
V
4.7k to 10k pull-up to Vcc,
measured at GBIC side of
connector
Table 3. Low-speed signals, electronic characteristics
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F i n i s a r
FCM-8520/8521-3 1000BASE-T GBIC Product Specification
High-Speed Electrical
Interface,
Transmission Line-GBIC
Parameter
Line Frequency
Tx Output Impedance
Rx Input Impedance
Symbol
fL
Min
Typ
125
Max
Units
MHz
Notes/Conditions
5-level encoding, per
IEEE 802.3ab.
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-GBIC
IV. High-Speed Electrical Interface
All high-speed signals are AC-coupled internally.
High-Speed Electrical Interface,
Host-GBIC
Parameter
Differential Input
Voltage
Differential Output
Voltage
Rise/Fall Time
Tx Input Impedance
Rx Output Impedance
Symbol
Vindiff
Min
0.50
Voutdiff
0.37
Typ
Max
2.00
Units
V
Notes/Conditions
Differential peak - peak
2.00
V
Differential peak - peak
Tr,Tf
Zin
250
75
psec
Ohm
Zout
75
Ohm
20%-80% Differential
Table 5. High-speed electrical interface, host-GBIC
V.
General Specifications
General
Parameter
Data Rate
Cable Length
Symbol Min
BR
L
Typ
Max
1.25
Units Notes/Conditions
Gb/sec IEEE 802.3 compatible.
See Notes 1 and 2 below.
100
m
Category 5 UTP. BER <10-10
Table 6. General specifications
Notes:
1.
Clock tolerance is ±50 ppm
2.
The FCM-8520/8521-3 is a full-duplex device in the “Preferred Master” mode.
3.
Automatic crossover detection is enabled. External crossover cable is not required
 Finisar Corporation
Rev A, Feb 2003
Page 4
F i n i s a r
FCM-8520/8521-3 1000BASE-T GBIC Product Specification
VI. Environmental Specifications
The FCM-8520-3 has an extended range from 0°C to +75°C case temperature as
specified in Table 8.
Environmental
Specifications
Parameter
Operating Temperature
Storage Temperature
Symbol
Top
Tsto
Min
0
-40
Typ
Max
75
85
Units
°C
°C
Notes/Conditions
Case temperature
Ambient temperature
Table 7. Environmental specifications
VII. Serial Communication Protocol
All Finisar GBICs are ‘Module Definition “4”’ and support the 2-wire serial
communication protocol outlined in the GBIC Specification1. These GBICs 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.”5
The 1000BASE-T physical layer IC can also be accessed via the 2-wire serial bus at
address A4h. For details interfacing with the PHY IC, see Marvell data sheet titled
“Alaska Ultra 88E1011/88E1001S Integrated Gigabit Ethernet Transceiver”6 (Marvell
document number MV-5100281-00).
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
 Finisar Corporation
Rev A, Feb 2003
Page 5
FCM-8520/8521-3 1000BASE-T GBIC Product Specification
F i n i s a r
VIII. Mechanical Specifications
The host-side of the FCM-8520-3 conforms to the mechanical specifications outlined in
the GBIC Specification Revision 5.5, Section 61. The front portion of the GBIC (part
extending beyond the face plate of the host) is larger to accommodate the RJ-45
connector. See Figure 1 below for details.
Figure 1. FCM-8520/8521-3 mechanical dimensions
 Finisar Corporation
Rev A, Feb 2003
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FCM-8520/8521-3 1000BASE-T GBIC Product Specification
F i n i s a r
IX. References
1. “Gigabit Interface Converter (GBIC) Revision 5.5”. Sun Microsystems Computer
Company et. al., September 27, 2000. http://playground.sun.com/pub/OEmod/
2. IEEE Std 802.3z. IEEE Standards Department, 2000.
3. “IEEE Std 802.3ab-1999 ‘Physical Layer Parameters and Specifications for 1000
Mb/s Operation Over 4-Pair of Category 5 Balanced Copper Cabling, Type
1000BASE-T”. IEEE Standards Department, 1999.
4. “Application Note AN-XXXX: Commonly Asked Questions Regarding Autonegotiation on Finisar’s 1000BASE-T GBICs”, Finisar Corporation, February 2003
5. “AT24C01A/02/04/08/16 2-Wire Serial CMOS E2PROM”. Atmel Corporation.
www.Atmel.com
6. “Alaska Ultra 88E1011/88E1001S Integrated 10/100/1000 Gigabit Ethernet
Transceiver”. Marvell Corporation. www.marvell.com
X.
For More Information
Finisar Corporation
1308 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
[email protected]
www.finisar.com
 Finisar Corporation
Rev A, Feb 2003
Page 7