RoHS Compliant Small Form Factor Pluggable Transceiver for Gigabit
Ethernet and Fiber Channel
FEATURES
z Compliant with SFP Transceiver MSA
specification
z Compliant with Specifications for IEEE
802.3z/Gigabit Ethernet
z LCP-1250Bxxx compliant with the 1.0625GBd
Fiber Channel 100-SM-LC-L FC-PI Rev.13
z LCP-1250Axxx compliant with the 1.0625GBd
Fiber Channel FC-PI 100-M5-SN-I Rev.13
z Compliant with Industry Standard RFT
Electrical Connector and Cage
z Single + 3.3V Power Supply and TTL Logic
Interface
Description
The LCP-1250xxxx series are hot pluggable
3.3V Small-Form-Factor transceiver module
designed expressly for high-speed
communication applications that require rates of
up to 1.25Gbit/sec. It is compliant with the Gigabit
Ethernet standards, as well as the SFP
Multisource Agreement (MSA).
The LCP-1250xxxx transceivers provide with
the LC receptacle that is compatible with the
industry standard LC connector. The transceiver
is also compatible with industry standard RFT
connector and cage.
The post-amplifier of the LCP-1250xxxx also
includes a LOS (Loss Of Signal) circuit that
provides a TTL logic-high output when an
unusable optical signal level is detected.
The LCP-1250xxxx transceiver is a Class 1
eye safety product. The optical power levels,
under normal operation, are at eye safe level.
z EEPROM with Serial ID Functionality
z Laser Class 1 Product which comply with the
requirements of IEC 60825-1 and IEC 60825-2
z Duplex LC Connector interface
Applications
z Gigabit Ethernet
z Fibre channel
z Switch to Switch interface
z Switched backplane applications
z File server interface
Performance
z LCP-1250A4FSxx Data Link up to 550m in
50/125μm Multi Mode Fiber
z LCP-1250B4QSxx Data Link up to 10km in
9/125μm Single Mode Fiber
DELTA ELECTRONICS, INC.
1 Nov., 2006
Rev. 0C
www.deltaww.com
Absolute Maximum Ratings
Parameter SymbolMin. Typ. Max. Unit Note
Storage Temperature Ts -40 85 ºC
Supply Voltage VCC 0 5 V
Recommended Operating Conditions
Parameter SymbolMin. Typ. Max. Unit Note
Case Operating Temperature TC -5 70 ºC
See order
information
Supply Voltage VCC 3.135 3.465V
Electrical Characteristics
(VCC=3.135V to 3.465V)
Parameter SymbolMin. Typ. Max. Unit Note
Total Supply Current
LCP-1250Axxx
I
CCT
LCP-1250Bxxx
Transmitter
Transmitter Differential Input Voltage VDT 0.5 2.4 V 1
Transmitter Disable Input-High V
Transmitter Disable Input-Low V
Transmitter Fault Output-High V
Transmitter Fault Output-Low V
2 VCC+0.3V
DISH
0 0.8 V
DISL
2 VCC+0.3V 2
TXFH
0 0.8 V 2
TXFL
Receiver
Receiver Differential Output Voltage VDR 0.35 0.7 2 V 3
LOS Output Voltage-High V
LOS Output Voltage-Low V
2 VCC+0.3V 2
LOSH
0 0.8 V 2
LOSL
Output Data Rise/Fall Time tr / tf 400 psec 4
Total Jitter (pk-pk) TJRX 220 psec
Notes:
1. Internally AC coupled and terminated to 100Ohm differential load.
250
250
mA
2. Pull up to V
with a 4.7K – 10K Ohm resistor on host Board
CC
3. Internally AC coupled, but requires a 100 Ohm differential termination at or internal to Serializer/
Deserializer.
4. These are 20%~80% values
2 Nov., 2006
Rev. 0C
DELTA ELECTRONICS, INC.
www.deltaww.com
Optical Characteristics (LCP-1250A4FSR)
(VCC=3.135V to 3.465V, Data Rate=1.25Gb/sec, PRBS=27-1 NRZ, 50/125μm MMF)
Parameter Symbol Min. Typ. Max. Unit Note
Transmitter
Output Optical Power (Avg.) PO -9 -3 dBm
Optical Extinction Ratio ER 9 dB
Center Wavelength
Spectral Width (RMS)
Optical Rise/Fall Time
Total Jitter (pk-pk)
Relative Intensity Noise
Output Eye
λ
C
σ
/tf 260 psec 1
t
r
TJ
220 psec
TX
RIN -117 dB/Hz
Complies with the IEEE 802.3z/D2 specification, and is class 1 laser
eye safety
λ
LOS- De-Asserted (Avg.) PD -17 dBm
LOS- asserted (Avg.) PA -30 dBm
LOS-Hysteresis PD-PA 0.5 dB
Overload PO -3 dBm
Notes:
1. These are 20%~80% values
2. The sensitivity is provided at a BER of 1×10
7
-1 PRBS.
2
830 850 860 nm
0.85 nm
850 nm
-10
or better with an input signal consisting of 1250Mb/s,
Mask of the eye diagram for the optical transmit signal
DELTA ELECTRONICS, INC.
3 Nov., 2006
Rev. 0C
www.deltaww.com
Optical Characteristics (LCP-1250B4QSR)
(VCC=3.135V to 3.465V, Data Rate=1.25Gb/sec, PRBS=27-1 NRZ, 9/125μm SMF)
Parameter Symbol Min. Typ. Max. Unit Note
Transmitter
Output Optical Power (Avg.) PO -9.5 -3 dBm
Optical Extinction Ratio ER 9 dB
Center Wavelength
Spectral Width
Optical Rise/ Fall Time
Total Jitter (pk-pk)
Relative Intensity Noise
Output Eye
λ
C
σ
260 psec 1
t
r/tf
TJ
TX
RIN -120 dB/Hz
Complies with the IEEE 802.3z/D2 specification, and is class 1 laser
eye safety
4 MOD-DEF2 Module Definition 2 3 Note 3, 2 wire serial ID interface
5 MOD-DEF1 Module Definition 1 3 Note 3, 2 wire serial ID interface
6 MOD-DEF0 Module Definition 0 3 Note 3, Grounded in Module
7 Rate Select Not Connect 3 Function not available
8 LOS Loss of Signal 3 Note 4
9 VeeR Receiver Ground 1 Note 5
10 VeeR Receiver Ground 1 Note 5
11 VeeR Receiver Ground 1 Note 5
12 RD- Inv. Received Data Out 3 Note 6
13 RD+ Received Data Out 3 Note 7
14 VeeR Receiver Ground 1 Note 5
15 VccR Receiver Power 2 3.3 ± 5%, Note 7
16 VccT Transmitter Power 2 3.3 ± 5%, Note 7
17 VeeT Transmitter Ground 1 Note 5
18 TD+ Transmit Data In 3 Note 8
19 TD- Inv. Transmit Data In 3 Note 8
20 VeeT Transmitter Ground 1 Note 5
Plug Seq.: Pin engagement sequence during hot plugging.
Note 2
Module disables on high or open
DELTA ELECTRONICS, INC.
5 Nov., 2006
Rev. 0C
www.deltaww.com
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. 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 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
3) Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10Kresistor on the
host board. The pull-up voltage shall be VccT or VccR (see Section IV for further details). Mod-Def 0 is grounded
by the module to indicate that the module is present Mod-Def 1 is the clock line of two wire serial interface for
serial ID Mod-Def 2 is the data line of two wire serial interface for serial ID
4) LOS (Loss of Signal) is an open collector/drain output, which should be pulled up with a 4.7K – 10K 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 100 differential lines which should be
terminated with 100 (differential) at 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 370 and 2000 mV differential
(185 – 1000 mV single ended) when properly terminated.
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 supply-filtering 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 100
differential termination inside the module. The AC coupling is done inside the module and is thus not
required on the host board. The inputs will accept differential swings of 500 – 2400 mV (250 – 1200
mV single-ended), though it is recommended that values between 500 and 1200 mV differential (250 –
600 mV single-ended) be used for best EMI performance.
DELTA ELECTRONICS, INC.
6 Nov., 2006
Rev. 0C
www.deltaww.com
Recommend Circuit Schematic
Protocol Vcc
Tx_Disable
Tx_Fault
Rx_LOS
VCC
SerDes ICProtocol IC
PLD / PAL
1uH
1uH
RES1
100 Ohms*
3.3V
0.1uF10uF
RES1
3.3V
RES1 RES1RES1
RES1 = 4.7k to 10k Ohms
* Depands on SerDes IC used
0.1uF
Tx_Disable
Tx_Fault
TD +
TD -
VeeT
0.1uF10uF
RD +
RD -
Rx_LOS
VeeR
Mod_def 2
Mod_def 1
Mod_def 0
DELTA SFP Module
VccT
10k Ohms
0.01uF
100 Ohms
0.01uF
VccR
0.01uF
0.01uF
Laser Driver
Preamp &
Quantizer
EEPROM
Laser Diode
Photo Diode
DELTA ELECTRONICS, INC.
7 Nov., 2006
Rev. 0C
www.deltaww.com
Package Outline Drawing for Metal Housing with Bail de-latch
DELTA ELECTRONICS, INC.
8 Nov., 2006
Rev. 0C
www.deltaww.com
SFP timing parameters for SFP management
Parameter Symbol Min.Max.UnitUnit Conditions
TX_DISABLE Assert
time
TX_DISABLE
Negate time
Time to initialize,
including reset of
TX_FAULT
TX Fault Assert
Time
TX_DISABLE to
reset
LOS Assert Time t_loss_on 100μsec Time from LOS state to Rx LOS assert
LOS Deassert Time t_loss_off 100μsec Time from non-LOS state to Rx LOS deassert
Serial ID Clock Rate f_serial_clock 100kHz
t_off 10 μsec
t_on 1 msec
t_init 300msec
t_fault
t_rest 10 μsec
100μsec Time from fault to TX fault on.
Time from rising edge of TX_DISABLE to
when the optical output falls below 10% of
nominal
Time from falling edge of TX_DISABLE to
when the modulated optical output rises
above 90% of nominal
From power on or negation of TX_Fault using
TX Disable.
Time TX Disable must be held high to reset
TX_Fault
DELTA ELECTRONICS, INC.
9 Nov., 2006
Rev. 0C
www.deltaww.com
SFP timing parameters
Power on initialization of SFP transceiver, TX_DISABLE
negated
Example of initialization during hot plugging, TX_DISABLE
negated.
Detection of transmitter safety fault condition Successful recovery from transient safety fault condition
Power on initialization of SFP, TX_DISABLE asserted
Initialization during hot plugging of SFP TRANSCEIVER.
SFP TX_DISABLE timing during normal operation.
Unsuccessful recovery from safety fault condition Timing of LOS detection
10 Nov., 2006
DELTA ELECTRONICS, INC.
Rev. 0C
www.deltaww.com
LCP-1250A4FSR EEPROM Serial ID Memory Contents (2-Wire Address A0h)
Address
Hex ASCII
00 03 25 20 50 46 F 75 SN 100 00 125 00
01 04 26 20 51 53 S 76 SN 101 00 126 00