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参数资料
| 型号： | TRF5426ANLT |
| 厂商： | OPNEXT INC |
| 元件分类： | 光收发 |
| 英文描述： | FIBER OPTIC TRANSCEIVER, 1261-1360nm, 155Mbps(Tx), 155Mbps(Rx), SURFACE MOUNT, LC CONNECTOR |
| 文件页数： | 31/35页 |
| 文件大小： | 902K |
| 代理商： | TRF5426ANLT |
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Technical Data for SFP Transceiver Series (Rev. 2.2 March 17, 2006)
Opnext, Inc.
- 5 -
Overview of Internal Interface Signal Definition
Pin Name
Pin #
Name/Function
Signal Specification
Receiver Signals
VeeR
9,10,11,
14
Receiver Ground
Ground, to SFP
Note: VeeR and VeeT are not connected internally within the SFP module
VccR
15
Receiver Power
Power, to SFP
Note: VccR and VccT are the receiver and transmitter power supplies. The recommended
host board power supply filtering is described below. When the recommended power
supply filtering network is used, hot plugging the SFP transceiver module will result in an
inrush current of no more than 30mA greater than the steady-state value. VccR and VccT
are not connected internally within the SFP module
RD+
RD-
13
12
Receive Data Out
Inv. Receive Data Out
High speed serial, from SFP
Note: These are the differential receiver outputs. They are AC-coupled 100
differential
lines, which should be terminated with 100
(differential) at the user SERDES. The AC
coupling is done inside the module and thus is not required on the host board
LOS
8
Receiver Loss of Signal Low speed, from SFP
Note: This is an open collector/drain output, which should be pulled up with a 4.7 k
–
10 k
resistor. Pull-up voltage between 2.0V and VccT,R + 0.3V. When high, this output
indicates the received power is below the worst-case receiver sensitivity (as defined by the
standard in use). Low indicates normal operation. In the low state, the output will be
pulled to <0.8V
Transmitter Signals
VeeT
1,17,20 Transmitter Ground
Ground, to SFP
Note: VeeR and VeeT are not connected internally within the SFP module
VccT
16
Transmitter Power
Power, to SFP
Note: VccR and VccT are the receiver and transmitter power supplies. The recommended
host board power supply filtering is described below. When the recommended power
supply filtering network is used, hot plugging the SFP transceiver module will result in an
inrush current of no more than 30mA greater than the steady-state value. VccR and VccT
are not connected internally within the SFP module
TD+
TD-
18
19
Transmit Data In
Inv.Transmit Data In
High speed serial, to SFP
Note: These are the differential transmitter inputs. They are AC-coupled, differential lines,
with 100
differential termination inside the module. The AC coupling is done inside the
module and thus is not required on the host board
TX DISABLE 3
Transmitter Disable
(Module disables on
high or open)
Low speed, to SFP
Note: 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 as follows:
-
Low (0 – 0.8V): Transmitter on
-
(>0.8V, <2.0V) undefined
-
High (2.0 – 3.465V): Transmitter disabled
-
Open: Transmitter disabled
TX FAULT
2
Transmitter Fault
Low speed, from SFP
Note: This is an open collector/drain output, which should be pulled up with a 4.7 k
–
10 k
resistor on the host board. Pull-up voltage between 2.0V and VccT,R + 0.3V.
When high, this output indicates a laser fault of some kind. Low indicates normal
operation. In the low state, the output will be pulled to <0.8V
Control Signals
MOD_DEF(0) 6
Module definition 0
MOD_DEF(1) 5
Module definition 1
MOD_DEF(2) 4
Module definition 2
These pins should be pulled up to VccT,R with a 4.7 k
– 10 k resistor.
- MOD_DEF(0) is grounded by the module to indicate that the module is present
- MOD_DEF(1) is the clock line of the two-wire serial interface for serial ID
- MOD_DEF(2) is the data line of the two-wire serial interface for serial ID
Rate Select
7
Select between full or
reduced receiver
bandwidth
N/C (not implemented, should be left open on host board)
Table 2: Overview of Internal Interface Signal Definition
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