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參數(shù)資料
| 型號(hào)： | AFCT-57M5ATPZ |
| 元件分類： | 光發(fā)射 |
| 英文描述： | FIBER OPTIC TRANSMITTER, 1280-1345nm, 1593Mbps, LC CONNECTOR |
| 封裝： | PLASTIC |
| 文件頁數(shù)： | 18/20頁 |
| 文件大?。?/td> | 402K |
| 代理商： | AFCT-57M5ATPZ |
7
Notes:
. TX_FAULT is an open collector/drain output, which must be pulled up with a 4.7 k – 0 kΩresistor on the host board. 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.
2. TX_DISABLE is an input that is used to shut down the transmitter optical output. It is internally pulled up (within the transceiver) with a 6.8 kΩ
resistor.
Low (0 – 0.8V):
Transmitter on
Between (0.8V and 2.0V):
Undefined
High (2.0 – Vcc max) or OPEN:
Transmitter Disabled
3. The signals Mod-Def 0, , 2 designate the two wire serial interface pins. They must be pulled up with a 4.7 k – 0 kΩresistor on the host board.
Mod-Def 0 is grounded by the module to indicate the module is present
Mod-Def is serial clock line (SCL) of two wire serial interface
Mod-Def 2 is serial data line (SDA) of two wire serial interface
4. RX_LOS (Rx Loss of Signal) is an open collector/drain output that must be pulled up with a 4.7 k – 0 kΩresistor on the host board. When high,
this output indicates the received optical 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.
5. RD-/+ designate the differential receiver outputs. They are AC coupled 00 Ω differential lines which should be terminated with 00 Ωdiffer-
ential at the host SERDES input. AC coupling is done inside the transceiver and is not required on the host board. The voltage swing on these
lines will be between 600 and 600 mV differential (300 – 800 mV single ended) when properly terminated.
6. VccR and VccT are the receiver and transmitter power supplies. They are defined at the SFP connector pin. The maximum supply current is 300
mA and the associated in-rush current will typically be no more than 30 mA above steady state after 2 microseconds.
7. TD-/+ designate the differential transmitter inputs. They are AC coupled differential lines with 00 Ωdifferential termination inside the module.
The AC coupling is done inside the module and is not required on the host board. The inputs will accept differential swings of 400 – 2400 mV
(200 – 200 mV single ended), although it is recommended that values between 500 mV and 200 mV differential (250-600 mV single ended)
be used for best EMI performance.
Table2.PinDescription
Pin
Name
Function/Description
Notes
VeeT
Transmitter Ground
2
TX_FAULT
Transmitter Fault Indication – High indicates a fault condition
Note
3
TX_DISABLE
Transmitter Disable – Module optical output disables on high or open
Note 2
4
MOD-DEF2
Module Definition 2 – Two wire serial ID interface data line (SDA)
Note 3
5
MOD-DEF
Module Definition – Two wire serial ID interface clock line (SCL)
Note 3
6
MOD-DEF0
Module Definition 0 – Grounded in module (module present indicator)
Note 3
7
N.C.
8
RX_LOS
Loss of Signal – High indicates loss of received optical signal
Note 4
9
VeeR
Receiver Ground
0
VeeR
Receiver Ground
VeeR
Receiver Ground
2
RD-
Inverse Received Data Out
Note 5
3
RD+
Received Data Out
Note 5
4
VeeR
Receiver Ground
5
VccR
Receiver Power + 3.3 V
Note 6
6
VccT
Transmitter Power + 3.3 V
Note 6
7
VeeT
Transmitter Ground
8
TD+
Transmitter Data In
Note 7
9
TD-
Inverse Transmitter Data In
Note 7
20
VeeT
Transmitter Ground
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