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參數(shù)資料
| 型號： | TR857FA-0D50M |
| 英文描述： | Optoelectronic |
| 中文描述： | 光電 |
| 文件頁數(shù)： | 2/19頁 |
| 文件大?。?/td> | 201K |
| 代理商： | TR857FA-0D50M |
2
Description
The SAMSUNG TR857FA Small Form Factor Pluggable transceiver is designed for use in
Gigabit Ethernet and Fibre Channel. TR857FA transceivers provide the LC receptacle is
compatible with the industry standard LC connector. Transceiver also conforms to the
industry SFP MultiSource agreement. For the good EMI performance, this transceiver uses
the metal case.
The transmitter converts LVPECL compatible electrical serial data into optical serial data.
The transmitter contains the automatic power control (APC) circuit for the constant optical
power over temperature. For the power control, monitoring PD is built into the TO-46 unit.
Also, for the guaranteed Eye safety, automatic shut down function is contained. The receiver
converts the optical serial data into LVPECL compatible electrical serial data. The loss of
signal (LOS) is TTL high when the received optical power is below the worst-case receiver
sensitivity. Low indicates normal operation.
Pin Information
Pin
1
2
3
4
5
6
Symbol
VeeT
TX Fault
TX Disable
MOD_DEF2
MOD_DEF1
MOD_DEF0
Sequence
1
3
3
3
3
3
Type
Functional Description
Ground
Signal Out
Signal In
Input/Output
Input/Output
Input/Output
Not
Connected
Signal Out
Ground
Ground
Ground
Data Out
Data Out
Ground
Power
Power
Ground
Data In
Data In
Ground
Transmitter signal ground
Transmitter fault indication
Transmitter disable
Module definition 2
Module definition 1
Module definition 0
Select
between
bandwidth
Loss of signal
Receiver ground
Receiver ground
Receiver ground
Received data inverted output
Received data non-inverted output
Receiver ground
+3.3V Receiver power supply
+3.3V Transmitter power supply
Transmitter ground
Transmitter data non-inverted output
Transmitter data inverted output
Transmitter ground
7
Rate Select
3
full
or
reduced
receiver
8
9
10
11
12
13
14
15
16
17
18
19
20
Los
VeeR
VeeR
VeeR
RD-
RD+
VeeR
VccR
VccT
VeeT
TD+
TD-
VeeT
3
1
1
1
3
3
1
2
2
1
3
3
1
Notes:
1) TX Fault is an open collector/drain output, which should be pulled up with a 4.7k – 10k
resistor on
the host board. When high, output indicates a laser fault of some kind. Low indicates normal operation.
In the low state, the output will be pulled to < 0.8V.
2) TX disable is an input that is used to shut down the transmitter optical output. It is pulled up within
the module with a 4.7 k – 10 k
resistor. Its states are:
Low (0 – 0.8V): Transmitter on
(>0.8, < 2.0V): Undefined
High (2.0 – 3.465V): Transmitter Disabled
Open: Transmitter Disabled
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