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參數(shù)資料
| 型號(hào)： | FCMJ-8521-3 |
| 元件分類(lèi)： | 光收發(fā) |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 1250Mbps(Tx), 1250Mbps(Rx), PANEL MOUNT |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大?。?/td> | 198K |
| 代理商： | FCMJ-8521-3 |
F i n i sa r
Finisar Corporation March 16, 2005 Rev H
Page 1
Product Specification
1000BASE-T Copper SFP Transceiver
FCMJ-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
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 FCMJ-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 FCMJ-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 FCMJ-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
Link Indicator on RX_LOS Pin
1000BASE-X auto-negotiation
enabled by default
FCMJ-8520-3
Yes
No
FCMJ-8521-3
No
Yes
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