LCP 1250B4MDRx 0A

RoHS Compliant Single Mode SFP Transceiver for GbE and Fiber
Channel
FEATURES
Compliant with SFP Transceiver SFF-8472
MSA specification with internal calibration
Compliant with Specifications for IEEE
802.3z/Gigabit Ethernet
Single + 3.3V Power Supply and TTL Logic
Interface
EEPROM with Serial ID Functionality
Laser Class 1 Product which comply with the
requirements of IEC 60825-1 and IEC 60825-2
Duplex LC Connector interface
Description
Applications
Gigabit Ethernet
The LCP-1250B4MDRx is hot pluggable 3.3V
Small-Form-Factor transceiver modules designed
expressly
for
high-speed
communication
applications that require rates up to 1.25Gb/s.
The transceiver is data rate transparent, which
means it can support GbE (1.25Gb/s) as well as
1x Fiber channel (1.062Gb/s) operations.
The LCP-1250B4MDRx is designed to be
compliant with SFP Multi-source Agreement
(MSA). Digital diagnostic monitoring functions
(Temperature, VCC, TX optical power, TX laser
bias current, and RX received optical power)
compliant with SFF-8472 are also available. See
order information for details.
The post-amplifier of the LCP-1250B4MDRx
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.
Switch to Switch interface
Switched backplane applications
File server interface
Performance
LCP-1250B4MDRx: 1310nm DFB laser, 19dB
link budget (40km)
1
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
Absolute Maximum Ratings
Parameter
Storage Temperature
Supply Voltage
Symbol
Ts
VCC
Min.
-40
0
Typ.
Max.
85
5
Unit
ºC
V
Note
Min.
-5
3.135
Typ.
Max.
70
3.465
Unit
ºC
V
Note
1
Unit
mA
Note
V
V
V
kΩ
V
V
1
2
2
2
V
kΩ
V
V
psec
3
2
2
2
4
Recommended Operating Conditions
Parameter
Case Operating Temperature
Supply Voltage
Symbol
TC
VCC
Note 1: See order information
Electrical Characteristics
(VCC=3.3V ± 5%)
Parameter
Symbol
Min.
Typ.
Max.
Total Supply Current
ICCT
300
Transmitter
Transmitter Differential Input Voltage
VDT
0.5
2.4
Transmitter Disable Input-High
VDISH
2
VCC+0.3
Transmitter Disable Input-Low
VDISL
0
0.8
Transmitter Fault Pull up Resistor
RTX_FAULT
4.7
10
Transmitter Fault Output-High
VTXFH
2
VCC+0.3
Transmitter Fault Output-Low
VTXFL
0
0.8
Receiver
Receiver Differential Output Voltage
VDR
0.35
2
Receiver LOS Load
RRXLOS
4.7
10
LOS Output Voltage-High
VLOSH
2
VCC+0.3
LOS Output Voltage-Low
VLOSL
0
0.8
Output Data Rise/Fall Time
tr / t f
220
Notes:
1. Internally AC coupled and terminated to 100Ohm differential load.
2. Pull up to VCC on host Board
3. Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/
Deserializer.
4. These are 20%~80% values
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DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
Optical Characteristics
(VCC=3.3V ± 5%, Data Rate=1250Mb/sec, PRBS=27-1 NRZ)
Parameter
Symbol
Min.
Typ.
Max.
Transmitter
Output Optical Power (Avg.)
PO
-4
1
Optical Extinction Ratio
ER
9
λC
Center Wavelength
1274
1310
1355
σ
Spectral Width (-20dB)
1
Side-mode Suppression Ratio
SMSR
30
Optical Rise/ Fall Time
tr/tf
260
Relative Intensity Noise
RIN
-120
Output Eye
Compliant with IEEE 802.3z
Receiver
Sensitivity (Avg.)
PIN
-23
λ
Input Optical Wavelength
1270
1570
LOS-Deasserted (Avg.)
PA
-23
LOS-Asserted (Avg.)
PD
-40
LOS-Hysteresis
PA-PD
0.5
Overload (Avg.)
PO
-1
Notes:
1. These are unfiltered 20%~80% values
Unit
dBm
dB
nm
nm
dB
psec
dB/Hz
dBm
nm
dBm
dBm
dB
dBm
Note
1
2
2. The sensitivity is provided at a BER of 1×10-12or better with an input signal consisting of 1250Mb/s,
27-1 PRBS and ER=9dB.
Mask of the eye diagram for the optical transmit signal
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DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
SFP Transceiver Electrical Pad Layout
Pin Function Definitions
Pin Num.
1
2
Name
VeeT
TX Fault
Function
Transmitter Ground
Transmitter Fault Indication
Plug Seq.
1
3
3
TX Disable
Transmitter Disable
3
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
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.
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DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
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):
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 –
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) 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. 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.
2007/11/29
Rev. 0A
www.deltaww.com
Recommend Circuit Schematic
VCC
1uH
3.3V
DELTA SFP Module
Protocol Vcc
1uH
RES1
10uF
0.1uF
0.1uF
VccT
10k Ohms
Tx_Disable
Tx_Disable
Tx_Fault
Tx_Fault
TD +
0.01uF
100 Ohms
Laser Driver
Laser Diode
TD -
Protocol IC
0.01uF
VeeT
SerDes IC
VccR
RES1
10uF
0.1uF
RD +
0.01uF
RD -
0.01uF
100 Ohms*
Preamp &
Quantizer
Photo Diode
Rx_LOS
Rx_LOS
3.3V
VeeR
RES1
RES1
RES1
PLD / PAL
Mod_def 2
EEPROM
Mod_def 1
Mod_def 0
RES1 = 4.7k to 10k Ohms
* Depands on SerDes IC used
6
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
Package Outline Drawing
7
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
SFP timing parameters for SFP management
Parameter
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
LOS Deassert Time
Serial ID Clock Rate
Symbol
t_off
t_on
Min.
t_init
t_fault
t_rest
t_loss_on
t_loss_off
f_serial_clock
Max.
10
1
Unit
µsec
msec
Note
1
2
300
msec
3
100
µsec
µsec
µsec
µsec
kHz
4
5
6
7
10
100
100
100
Notes:
1) Time from rising edge of TX_DISABLE to when the optical output falls below 10% of nominal
2) Time from falling edge of TX_DISABLE to when the modulated optical output rises above 90% of
nominal
3) From power on or negation of TX_Fault using TX Disable
4) Time from fault to TX fault on.
5) Time TX Disable must be held high to reset TX_Fault
6) Time from LOS state to Rx LOS assert
7) Time from non-LOS state to Rx LOS deassert
8
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
Enhanced Digital Diagnostic Interface
The memory map in the following describes an extension to the memory map defined in SFP MSA. The enhanced
interface uses the two wire serial bus address 1010001X(A2h) to provide diagnostic information about the module’s
present operating conditions.
2 wire address 1010000 X (A0h)
2 wire address 1010001 X (A2h)
0
0
Alarm and Warning Thresholds
(56 bytes)
55
Serial ID Defined by SFP MSA
(96 bytes)
56
Cal Constants
(40 bytes)
95
96
95
96
Real Time Diagnostic Interface
(24 bytes)
119
Vender Specific
(32 bytes)
120
Vender Specific
127
127
128
128
Reserved in SFP MSA
(128 bytes)
247
248
255
255
User Writable EEPROM
(120 bytes)
Vender Specific
(8 bytes)
Digital Diagnostic Memory Map Specific Data Field Descriptions
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DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
EEPROM Serial ID Memory Contents (2-Wire Address A0h)
Address
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Hex
03
04
07
00
00
00
02
00
00
00
00
01
0D
00
28
FF
00
00
00
00
44
45
4C
54
41
20
20
20
20
20
20
20
20
20
20
20
00
00
00
00
4C
43
50
ASCII
D
E
L
T
A
L
C
P
Address
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
Hex
2D
31
32
35
30
42
34
4D
44
52
20
20
20
41
20
20
20
05
1E
00
CS1
00
1A
00
00
SN
SN
SN
SN
SN
SN
SN
SN
SN
SN
SN
SN
SN
SN
SN
SN
DC
DC
ASCII
1
2
5
0
B
4
M
D
R
Note 1
Note 2
Note 3
Address
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
Hex
DC
DC
DC
DC
DC
DC
68
B0
02
CS2
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
ASCII
Note 4
Note 5
Notes:
1)
Byte 63: Check sum of bytes 0-62.
2)
Byte 68-83: Serial number.
3)
Byte 84-91: Date code.
4)
Byte 95: Check sum of bytes 64-94.
5)
Byte 128 to 255 had been set hex 00.
10
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
Digital Diagnostic Monitoring Interface
Alarm and Warning Thresholds (2-Wire Address A2h)
Address
#
Bytes
00-01
02-03
04-05
06-07
08-09
10-11
12-13
14-15
16-17
18-19
20-21
22-23
24-25
26-27
28-29
30-31
32-33
34-35
36-37
38-39
40-45
56-91
92-94
95
96-97
98-99
100-101
102-103
104-105
106-109
110
111
112-119
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
16
36
3
1
2
2
2
2
2
4
1
1
8
Name
Temp High Alarm
Temp Low Alarm
Temp High Warning
Temp Low Warning
Voltage High Alarm
Voltage Low Alarm
Voltage High Warning
Voltage Low Warning
Bias High Alarm
Bias Low Alarm
Bias High Warning
Bias Low Warning
TX Power High Alarm
TX Power Low Alarm
TX Power High Warning
TX Power Low Warning
RX Power High Alarm
RX Power Low Alarm
RX Power High Warning
RX Power Low Warning
Reversed
External Calibration Constants
Reversed
Checksum
Real Time Temperature
Real Time Supply Voltage
Real Time Tx Bias Current
Real Time Tx Optical Power
Real Time Rx Received Power
Reserved
Optional Status/ Control Bits
Reserved
Optional Set of Alarm and Warning
Value (Dec.)
Unit
Note
TC (MAX.)+15
TC (MIN.)
TC (MAX.)+10
TC (MIN.)+10
Vcc+5%
Vcc-5%
Vcc+3%
Vcc-3%
IOP*2+35
IOP-13
IOP *2+30
IOP –8
P+3
P-3
P+2
P-2
P0+3
PS-2
P0+2
PS
℃
1
Volt
mA
2
dBm
3
dBm
4
5
6
7
Notes:
1) TC: Case Operating temperature
2) IOP: Operating current at room temperature. The min. setting current is 0 mA.
3) P: Operating optical power of transmitter at room temperature.
4) P0: Overload optical power of receiver
PS: Sensitivity optical power of receiver
5) Byte 95 contains the low order 8bits of sum of bytes 0-94
6)
11
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
State/ Control Bits
Byte
110
110
110
110
110
110
110
110
Bit
7
6
5
4
3
2
1
0
Name
Tx Disable State
Soft Tx Disable
Reserved
Rate Select tate
Soft Rate Select
Tx Fault
LOS
Data_Ready_Bar
Description
Digital state of the Tx disable input pin
Read/ Write bit that allow software disable of laser
NA
NA
Digital state of the Tx fault output pin
Digital state of the LOS output pin.
NA
7)
Optional Set of Alarm and Warning
Byte
112
112
112
112
112
112
112
112
113
113
113
116
116
116
116
116
116
116
116
117
117
117
Bit
7
6
5
4
3
2
1
0
7
6
5-0
7
6
5
4
3
2
1
0
7
6
5-0
Name
Temp High Alarm
Temp Low Alarm
Vcc High Alarm
Vcc Low Alarm
Tx Bias High Alarm
Tx Bias Low Alarm
Tx Power High Alarm
Tx Power Low Alarm
Rx Power High Alarm
Rx Power Low Alarm
Reserved
Temp High Warning
Temp Low Warning
Vcc High Warning
Vcc Low Warning
Tx Bias High Warning
Tx Bias Low Warning
Tx Power High Warning
Tx Power Low Warning
Rx Power High Warning
Rx Power Low Warning
Reserved
Description
Set when internal temperature exceeds high alarm level
Set when internal temperature is below low alarm level
Set when internal supply voltage exceeds high alarm level
Set when internal supply voltage is below low alarm level
Set when Tx Bias current exceeds high alarm level
Set when Tx Bias current is below low alarm level
Set when Tx output power exceeds high alarm level
Set when Tx output power is below low alarm level
Set when received power exceeds high alarm level
Set when received power is below low alarm level
Set when internal temperature exceeds high warning level
Set when internal temperature is below low warning level
Set when internal supply voltage exceeds high warning level
Set when internal supply voltage is below low warning level
Set when Tx Bias current exceeds high warning level
Set when Tx Bias current is below low warning level
Set when Tx output power exceeds high warning level
Set when Tx output power is below low warning level
Set when received power exceeds high warning level
Set when received power is below low warning level
Digital Diagnostic Monitor Accuracy
Parameter
Typical Value
Note
± 3℃
± 3%
± 10%
± 1.5dB
± 3dB
1
2
Transceiver Temperature
Power Supply Voltage
TX Bias Current
TX Optical Power
RX Optical Power
Notes:
1)
2)
Temperature is measured internal to the transceiver.
Voltage is measured internal to the transceiver.
12
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
Regulatory Compliance
Test Item
(#1)
Electromagnetic Interference
EMC
(#2) Immunity：
Radio Frequency
Electromagnetic Field
(#3) Immunity：
Electrostatic Discharge to the
Duplex SC Receptacle
(#4) Electrostatic Discharge to
the Electrical Pins
Reference
Qty’
FCC Class B
EN 55022 Class B
CISPR 22
5
EN 61000-4-3
IEC 1000-4-3
5
Evaluation
(1) Satisfied with electrical characteristics of
product spec.
EN 61000-4-2
IEC 1000-4-2
IEC 801.2
5
(2) No physical damage
MIL-STD-883C
Method 3015.4
EIAJ#1988.3.2B
Version 2,
Machine model
5
Ordering information for SFP modules
LCP-1250B4MDRX1
X1: Temperature
Blank: -5 to +70 degree C
H: -10 to +85 degree C
T: -40 to +85 degree C
13
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com
Revision History
Rev
0A
Date
Contents
Sep., 2007 First release
14
DELTA ELECTRONICS, INC.
2007/11/29
Rev. 0A
www.deltaww.com