SFP-1.25G-BiDi3.40-DI Особенности: - Industrial

SFP-1.25G-BiDi3.40-DI
Особенности:
- Industrial:-40°C ~ +85°C
- 1310nm DFB лазер + PIN фотоприемник
- возможность горячей замены
- LC разъем
- Digital diagnostic monitor interface (DDMI)
- соответствие спецификации SFP MSA и SFF-8472
Области применения:
- Gigabit Ethernet 10000Base-LX
- ATM
- SONT/SDH/PDH
- FDDI
- Fiber Channel
Normal operating condition
Parameter
Operating Case Temperature
Supply Voltage
Symbol
Top
Vcc
Min
-40
3.15
Typ
3.3
Max
85
3.45
Units
°C
V
Ref.
Industrial
Функциональная схема:
RD
Post AMP
TIA
photodiode
LOS
TD
LD driver circuit
Laser diode
Tx_Disable
Tx_Fault
SDA
SCL
Extended ID
Memory
Diagnostic
Monitoring
Interface
стр.1/6
SFP-1.25G-BiDi3.40-DI
Performance Specifications - Electrical
Parameter
Symbol
Min.
Transmitter
LVPECL Inputs(Differential)
Vin
400
Input Impedance (Differential)
Zin
85
TX_Dis
TX_FAULT
Disable
Enable
Fault
Normal
Typ.
100
2
0
2
0
Receiver
LVPECL Outputs (Differential)
Vout
Max
Unit
2000
mVpp
115
ohm
Notes
AC coupled
inputs*(note5)
Rin > 100
kohm @ DC
Vcc+0.3
0.8
Vcc+0.3
0.5
400
V
V
2000
mVpp
AC coupled
outputs*(note5
)
Output Impedance
(Differential)
LOS
RX_LOS
Normal
MOD_DEF ( 0:2 )
Zout
85
VoH
VoL
2
0
2.5
0
Optical and Electrical Characteristics
Parameter
9µm Core Diameter SMF
Data Rate
100
ohm
Vcc+0.3
0.8
Transmitter
λC
Δλ
Pout
ER
tr/tf
TJ
V
V
With Serial
ID
V
V
0.5
Symbol
L
Center Wavelength
Spectral Width (RMS)
Average Output Power*(note3)
Extinction Ratio @ 1250Mbps
Rise/Fall Time(20%~80%)
Total Jitter
Output Optical
Eye*(note4)
TX_Disable Assert Time
Pout@TX Disable Asserted
115
Min.
Typical
40
1063/1250
Max.
Unit
km
Mbps
1290
1310
-2
6
1330
3.5
3
9
0.26
260
nm
nm
dBm
dB
ns
ps
10
-45
us
dBm
1570
-23
nm
dBm
dBm
dBm
dBm
dB
Compliant with IEEE 802.3z*(note7)
Center Wavelength
Receiver Sensitivity*(note6)@1250Mbps
Receiver Overload
LOS De-Assert@1250Mbps
LOS Assert
LOS Hysteresis*(note8)
t_off
Pout
Receiver
λC
Pmin
Pmax
LOSD
LOSA
1530
1550
-3
-24
-42
0.5
Pin Function Definitions
Pin NO.
Name
Function
1
2
3
VeeT
TX Fault
TX Disable
Transmitter Ground
Transmitter Fault Indication
Transmitter Disable
Plug
Seq.
1
3
3
Notes
5)
1)
2) Module disables on high or open
стр.2/6
SFP-1.25G-BiDi3.40-DI
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
MOD-DEF2
MOD-DEF1
MOD-DEF0
Rate Select
LOS
VeeR
VeeR
VeeR
RDRD+
VeeR
VccR
VccT
VeeT
TD+
TDVeeT
Module Definition 2
Module Definition 1
Module Definition 0
Not Connect
Loss of Signal
Receiver Ground
Receiver Ground
Receiver Ground
Inv. Received Data Out
Received Data Out
Receiver Ground
Receiver Power
Transmitter Power
Transmitter Ground
Transmit Data In
Inv. Transmit Data In
Transmitter Ground
3
3
3
3
3
1
1
1
3
3
1
2
2
1
3
3
1
3) Data line for Serial ID.
3) Clock line for Serial ID.
3) Grounded within the module.
Function not available
4)
5)
5)
5)
6)
6)
5)
7) 3.3 ± 5%
7) 3.3 ± 5%
5)
8)
8)
5)
1) TX Fault is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor on the host board. Pull up voltage
between 2.0V and VccT, R+0.3V. 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 – 10 KΩ 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
3) Modulation Absent, connected to VEET or VEER in the module.
4) LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10KΩ resistor. Pull up voltage between
2.0V and VccT, R+0.3V. 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) VeeR and VeeT may be internally connected within the SFP module.
6) RD-/+: These are the differential receiver outputs. They are AC coupled 100Ω differential lines which should be terminated with 100Ω
(differential) at the user SERDES. The AC coupling is done inside the module and is thus not required on the host board.
7) VccR and VccT are the receiver and transmitter power supplies. They are defined as 3.3V ±5% at the SFP connector pin. Maximum
supply current is 300mA. Recommended host board power supply filtering is shown below. Inductors with DC resistance of less than 1 ohm
should be used in order to maintain the required voltage at the SFP input pin with 3.3V supply voltage. When the recommended supplyfiltering network is used, hot plugging of the SFP transceiver module will result in an inrush current of no more than 30mA greater than the
steady state value. VccR and VccT may be internally connected within the SFP transceiver module.
8) TD-/+: These are the differential transmitter inputs. They are AC-coupled, differential lines with 100Ω differential termination inside the
module. The AC coupling is done inside the module and is thus not required on the host board.
The serial interface uses the 2-wire serial CMOS EEPROM protocol defined for the ATMEL AT24C02/04 family of components. When the
serial protocol is activated, the host generates the serial clock signal (SCL). The positive edge clocks data into those segments of the
EEPROM that are not write protected within the SFP transceiver. The negative edge clocks data from the SFP transceiver. The serial data
signal (SDA) is bi-directional for serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of serial protocol
activation. The memories are organized as a series of 8-bit data words that can be addressed individually or sequentially.
The Module provides diagnostic information about the present operating conditions. The transceiver generates this diagnostic data by
digitization of internal analog signals. Calibration and alarm/warning threshold data is written during device manufacture. Received power
monitoring, transmitted power monitoring, bias current monitoring, supply voltage monitoring and temperature monitoring all are
implemented. If the module is defined as external calibrated, the diagnostic data are raw A/D values and must be converted to real world
units using calibration constants stored in EEPROM locations 56 – 95 at wire serial bus address A2H. The digital diagnostic memory map
specific data field define as following .For detail EEPROM information, please refer to the related document of SFF 8472 Rev 9.3.
стр.3/6
SFP-1.25G-BiDi3.40-DI
Рекомендованная схема включения:
Описание контактов (PIN):
Pin Name
PIN
GNDR
9, 10, 11, 14
Name/Function
Receiver Ground
Receiver Supply Voltage. They are defined as +3.3V±5% at the SFP
connector pin. Recommended host board power supply filtering is shown
VCCR
15
RD-
12
below. The DC resistance of inductor is less than 1Ω,which result in
maintaining the required voltage at the SFP input pin with +3.3V supply
voltage.
Receiver Data, Differential Output. They are AC coupled 100Ωdifferential
стр.4/6
SFP-1.25G-BiDi3.40-DI
lines which should be terminated with 100Ωat the user SERDES. The AC
coupling is done inside the module and is thus not required on the host board.
The voltage swing on these lines will be between 370mV and 2000mV
differential when properly terminated.
Receiver Data, Differential Output. They are AC coupled 100Ωdifferential
RD+
13
LOS
8
Rate Select
GNDT
7
1, 17, 20
lines which should be terminated with 100Ωat the user SERDES. The AC
coupling is done inside the module and is thus not required on the host board.
The voltage swing on these lines will be between 370mV and 2000mV
differential when properly terminated.
Receiver Loss of Signal, logic high, open collector compatible, 4.7K to 10K
Ohm pull up to VCCR on host
NC.
Transmitter Ground
Transmitter Supply Voltage. They are defined as +3.3V±5% at the SFP
connector pin. Recommended host board power supply filtering is shown
VCCT
16
TD+
18
TD-
19
TX_Disable
3
TX_Fault
2
MOD_DEF0
6
MOD_DEF1
5
MOD_DER
2
4
below. The DC resistance of inductor is less than 1Ω,which result in
maintaining the required voltage at the SFP input pin with +3.3V supply
voltage.
Transmit Data, Differential Input. They are AC coupled 100Ωdifferential lines
which should be terminated with 100Ωinside the module. The AC coupling is
done inside the module and is thus not required on the host board.
Transmit Data, Differential Input. They are AC coupled 100Ωdifferential lines
which should be terminated with 100Ωinside the module. The AC coupling is
done inside the module and is thus not required on the host board.
Transmitter Disable, logic high, open collector compatible, 4.7K to 10K Ohm
pull up to VCCT on SFP. The pin is used to shut down the transmitter optical
output. High is transmitter Disabled, Low is transmitter on.
Transmitter Fault, logic high, open collector compatible, 4.7K to 10K Ohm pull
up to VCCT on host. When high, output indicates a laser fault of some kind.
Low indicates normal operation.
SFP module definition and presence, bit 0, 4.7K to 10K Ohm pull up to VCCT
on host. The pin is grounded by the module to indicate that the module is
present.
SFP module definition and presence, bit 1, 4.7K to 10K Ohm pull up to VCCT
on host. The pin is the clock line of two wire serial interface for serial ID
SFP module definition and presence, bit 2, 4.7K to 10K Ohm pull up to VCCT
on host. The pin is the data line of two wire serial interface for serial ID.
Описание EEPROM:
WDM SFP модуль содержит EEPROM. Это обеспечивает доступ к информации о
идентификации, которая описывает способности модуля, стандарты интерфейса,
наименование производителя и код модели. Последовательный интерфейс использует
2-х проводной последовательный CMOS EEPROM протокол, определенный для ATMEL
AT24C01A/02/04 семейства микросхем. Когда последовательный протокол
активизирован, Host производит последовательный сигнал Clock (SCL MOD_DEF1).
Положительный сигнал clock data позволяет выбрать сегмент не защищенного от
записи EEPROM в пределах памяти SFP модуля. Отрицательный сигнал позволяет
считывать данные с SFP модуля. Последовательный сигнал данных (SDA MOD_DEF2)
двунаправленный для последовательного протокола. Организация памяти –
стр.5/6
SFP-1.25G-BiDi3.40-DI
последовательные 8-и битовые слова, которые могут быть адресованы индивидуально
или последовательно.
Mechanical Specifications
стр.6/6
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