LCP-2488A4EDM(H)M
Multirate Small Form Factor Pluggable Transceiver for
SONET OC-48/SDH STM-16 with Internally-calibrated Digital Diagnostic Function
FEATURES
Compliant with SFP Transceiver SFF-8472 MSA
specification with internal calibration
Compliant with the 2.125GBd Fiber Channel FC-PI
200-M5-SN-I Rev.13
Compliant with the 1.0625GBd Fiber Channel
FC-PI 100-M5-SN-I Rev.13
Compliant with Specifications for IEEE
802.3z/Gigabit Ethernet
Compliant with Industry Standard RFT Electrical
Connector and Cage
Single +3.3V Power Supply and TTL Logic
Interface
Laser Class 1 Product which comply with the
requirements of IEC 60825-1 and IEC 60825-2
Duplex LC Connector interface
Description
The
designed
LCP-2488A4EDM(H)M
expressly
for
series
are
hot
pluggable 3.3V Small-Form-Factor transceiver modules
high-speed
communication
The
applications that require rates up to 2.5Gb/s.
Applications
SONET OC-48/STM-1
SONET OC-12/STM-4
SONET OC-3/STM-16
Gigabit Ethernet/Fibre Channel
Performance
LCP-2488A4EDM(H)M Data(2488Mbps) Link up to
300m in 50/125µm Multi Mode Fiber
SFP
Multi-source
transceiver is data rate transparent, which means it can
comply with
Gigabit Ethernet as specified in IEEE Std
802.3 and Fibre Channel FC-PI 13.0. They are
compatible with SONET OC-48, SONET OC-12 and
SONET OC-3 standards.
The LCP-2488A4EDM(H)M series are designed to
be
compliant
with
SFF-8472
Agreement (MSA) with five internally-calibrated digital
monitoring functions: Temperature, V
CC
, TX optical
power, TX laser bias current, and RX received optical
power.
The post-amplifier of the LCP-2488A4EDM(H)M
series also includes a Loss of Signal (LOS) circuit that
provides a TTL logic-high output when the received
optical level is below a preset LOS Assert threshold.
1
DELTA ELECTRONICS, INC.
Dec, 2004
Rev. 0A
www.deltaww.com
LCP-2488A4EDM(H)M
Absolute Maximum Ratings
Parameter
Storage Temperature
Supply Voltage
Symbol
Ts
V
CC
Min.
-40
0
Typ.
Max.
85
5
Unit
ºC
V
Note
Recommended Operating Conditions
Parameter
Ambient Operating Temperature
Supply Voltage
Symbol
T
A
V
CC
Min.
0
3.135
Typ.
Max.
70
3.465
Unit
ºC
V
Note
1
Electrical Characteristics
(T
A
=0 ºC to 70 ºC, V
CC
=3.135V to 3.465V)
Parameter
Total Supply Current
Transmitter
Transmitter Differential Input Voltage
Transmitter Disable Input-High
Transmitter Disable Input-Low
Transmitter Fault Pull up Resistor
Transmitter Fault Output-High
Transmitter Fault Output-Low
Receiver
Receiver Differential Output Voltage
Receiver LOS Load
LOS Output Voltage-High
LOS Output Voltage-Low
Output Data Rise/Fall Time
Symbol
I
CCT
V
DT
V
DISH
V
DISL
R
TX_FAULT
V
TXFH
V
TXFL
V
DR
R
RXLOS
V
LOSH
V
LOSL
t
r
/ t
f
Min.
0.5
2
0
4.7
2
0
0.37
4.7
2
0
0.7
Typ.
Max.
220
2.4
V
CC
+0.3
0.8
10
V
CC
+0.3
0.8
2
10
V
CC
+0.3
0.8
200
Unit
mA
V
V
V
kΩ
V
V
V
kΩ
V
V
psec
Note
2
3
4
3
5
Notes:
1. Extended temperature range available.
2. Internally AC coupled and terminated to 100Ohm differential load.
3. Pull up to V
CC
on host Board
4. Internally AC coupled, but requires a 100 Ohm differential termination at or internal to Serializer/
Deserializer.
5. These are 20%~80% values
2
DELTA ELECTRONICS, INC.
Dec, 2004
Rev. 0A
www.deltaww.com
LCP-2488A4EDM(H)M
Optical Characteristics
(T
A
=0 ºC to 70 ºC, V
CC
=3.135V to 3.465V, Data Rate=2.488Gb/sec, PRBS=2
23
-1 NRZ, 50/125µm MMF)
Parameter
Transmitter
Output Optical Power (Avg.)
Optical Extinction Ratio
Center Wavelength
Spectral Width (RMS)
Optical Rise/Fall Time
Relative Intensity Noise
Output Eye
Receiver
Sensitivity (Avg.)
@ OC-48
@ 2x Fibre Channel
@ Gigabit Ethernet
@ OC-12
@ OC-3
Input Optical Wavelength
LOS-De-asserted (Avg.)
LOS-Asserted (Avg.)
LOS-Hysteresis
Overload
Notes:
1. These are 20%~80% values
2. With 9dB extinction ratio. Measured with PRBS 2
23
-1 test pattern.
3. Measured with PRBS 2
7
-1 test pattern.
1.25
1.00
Mean level of logical “1”
Symbol
Min.
Typ.
Max.
Unit
Note
P
O
-9.5
-4
dBm
ER
8.2
dB
λ
C
830
850
860
nm
σ
0.85
nm
150/200
psec
1
t
r
/ t
f
RIN
-117
dB/Hz
Complies with the IEEE 802.3z/D2 specification, and is class 1 laser
eye safety
-17
-17
-17
-20
-21
850
-17
-30
0.5
-4
2
3
3
2
2
P
IN
dBm
λ
P
A
P
D
P
A
-P
D
P
O
nm
dBm
dBm
dB
dBm
Amplitude
0.75
0.25
0.00
-0.25
Mean level of logical “0”
Time
Optical Pulse Mask with Bessel Filter Specified in ITU-T G.957
Mask of the eye diagram for the optical transmit signal
3
DELTA ELECTRONICS, INC.
Dec, 2004
Rev. 0A
www.deltaww.com
LCP-2488A4EDM(H)M
SFP Transceiver Electrical Pad Layout
Pin Function Definitions
Pin Num.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Name
VeeT
TX Fault
TX Disable
MOD-DEF2
MOD-DEF1
MOD-DEF0
Rate Select
LOS
VeeR
VeeR
VeeR
RD-
RD+
VeeR
VccR
VccT
VeeT
TD+
TD-
VeeT
Function
Transmitter Ground
Transmitter Fault Indication
Transmitter Disable
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
Plug Seq.
1
3
3
3
3
3
3
3
1
1
1
3
3
1
2
2
1
3
3
1
Notes
Note 1
Note 2
Module disables on high or open
Note 3, 2 wire serial ID interface
Note 3, 2 wire serial ID interface
Note 3, Grounded in Module
Function not available
Note 4
Note 5
Note 5
Note 5
Note 6
Note 7
Note 5
3.3 ± 5%, Note 7
3.3 ± 5%, Note 7
Note 5
Note 8
Note 8
Note 5
Plug Seq.: Pin engagement sequence during hot plugging.
4
DELTA ELECTRONICS, INC.
Dec, 2004
Rev. 0A
www.deltaww.com
LCP-2488A4EDM(H)M
Notes:
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 K
Ω
resistor. Its states are:
Low (0 – 0.8V):
(>0.8, < 2.0V):
High (2.0 – 3.465V):
Open:
3)
Transmitter on
Undefined
Transmitter Disabled
Transmitter Disabled
Mod-Def 0,1,2. These are the module definition pins. They should be pulled up with a 4.7K – 10KΩresistor 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 – 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)
6)
VeeR and VeeT may be internally connected within the SFP module.
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. 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 100Ω
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.
5
DELTA ELECTRONICS, INC.
Dec, 2004
Rev. 0A
www.deltaww.com
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