FCM-8520-3 Finisar Corporation, FCM-8520-3 Datasheet

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FCM-8520-3

Manufacturer Part Number
FCM-8520-3
Description
TX/RX Optical Fiber 1250Mbps
Manufacturer
Finisar Corporation
Type
TX/RXr
Datasheet

Specifications of FCM-8520-3

Rise Time
0.25(Typ) ns
Operating Supply Voltage
4.5 to 5.5 V

Available stocks

Company
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Manufacturer
Quantity
Price
Part Number:
FCM-8520-3
Manufacturer:
OMRON
Quantity:
13 230
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FCM-8520-3
Manufacturer:
FINISAP
Quantity:
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F i n i s a r
Product Features
Applications
Finisar’s FCM-8520/8521-3 1000BASE-T Copper GBIC transceivers are based on the
GBIC Specification Revision 5.5
1000BASE-T standards as specified in IEEE Std 802.3z
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”
explanation on the differences between the two models.
PRODUCT SELECTION
FCM-8520-3
FCM-8521-3
 Finisar Corporation
Rev A, Feb 2003
• Up to 1.25Gb/s bi-directional
• Extended operating temperature
• Hot-pluggable
• Fully metallic enclosure for low
• Low power (1.5W typical)
• Access to physical layer IC via 2-
• 1.25 Gigabit Ethernet over Cat 5
data links
range (0°C to +75°C)
EMI
wire serial bus
cable
Part Number
1000BASE-T Copper GBIC Transceivers
Product Specification
Link Indicator on RX_LOS Pin
1
FCM-8520/8521-3
. They are compatible with the Gigabit Ethernet and
Yes
No
2
and IEEE Std 802.3ab
Compatible with 1000BASE-X
4
, for a more complete
Auto-negotiation
Yes
No
3
.
Page 1

Related parts for FCM-8520-3

FCM-8520-3 Summary of contents

Page 1

... GBIC Specification Revision 5.5 1000BASE-T standards as specified in IEEE Std 802.3z 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, “ ...

Page 2

... GND +TX_DAT -TX_DAT GND Note: RX_LOS is used for link indication on the FCM- 8520-3, 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 1 Specification Revision 5 ...

Page 3

... 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 Symbol Supply Current ...

Page 4

... Parameter Symbol Min Data Rate BR Cable Length L Notes: Clock tolerance is ±50 ppm 1. 2. The FCM-8520/8521 full-duplex device in the “Preferred Master” 3. Automatic crossover detection is enabled. External crossover cable is not required  Finisar Corporation Rev A, Feb 2003 Symbol Min Typ Max f 125 ...

Page 5

... 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 Symbol Operating Temperature T op Storage Temperature T sto Table 7. Environmental specifications VII. Serial Communication Protocol All Finisar GBICs are ‘Module Definition “4”’ and support the 2-wire serial ...

Page 6

... FCM-8520/8521-3 1000BASE-T GBIC Product Specification 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 6 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  ...

Page 7

... FCM-8520/8521-3 1000BASE-T GBIC Product Specification 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” ...

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