LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
1 Oct, 2004
Rev. 0A
www.deltaww.com
Small Form Factor Pluggable Transceiver for
Fiber Channel with Internally-calibrated Digital Diagnostic Function
FEATURES
Compliant with SFP Transceiver SFF-8472
MSA specification with internal calibration
LCP-2125Bxxx compliant with the 2.125GBd
Fiber Channel 200-SM-LC-L FC-PI Rev.13
LCP-2125Bxxx compliant with the 1.0625GBd
Fiber Channel 100-SM-LC-L FC-PI Rev.13
LCP-2125Axxx compliant with the 2.125GBd
Fiber Channel FC-PI 200-M5-SN-I Rev.13
LCP-2125Axxx compliant with the 2.125GBd
Fiber Channel FC-PI 100-M5-SN-I Rev.13
Compliant with Specifications for IEEE
802.3z/ Gig abit Ethernet
EEPROM with Serial ID and Di
g
ital Dia
g
nostic
Functionality
Laser Class 1 Product which comply with the
requirements of IEC 60825-1 and IEC 60825-2
Description
The LCP-2125xxx series are hot pluggable
3.3V Small-Form-Factor transceiver modules
designed expressly for high-speed communication
applications that require rates up to 2.125Gb/s.
The transceiver is data rate transparent, which
means it can support 2x Fiber channel as well as
GbE (1.25Gb/s) and 1x Fiber channel (1.062Gb/s).
The LCP-2125 series are designed to be
compliant with SFF-8472 SFP Multi-source
Agreement (MSA) with five internally-calibrated
digital monitoring functions: Temperature, VCC, TX
optical power, TX laser bias current, and RX
received optical power.
The post-amplifier of the LCP-2125 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.
Applications
Switch to Switch interface
Switched backplane applications
File server interface
Performance
LCP-2125A4EDM Data Link up to 300m in
50/125µm Multi Mode Fiber
LCP-2125B4QDM Data Link up to 10km in
9/125µm Single Mode Fiber
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
2 Oct, 2004
Rev. 0A
www.deltaww.com
Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit Note
Storage Temperature Ts -40 85 ºC
Supply Voltage VCC 0 5 V
Recommended Operating Conditions
Parameter Symbol Min. Typ. Max. Unit Note
Ambient Operating Temperature TA 0 70 ºC 1
Supply Voltage VCC 3.135 3.465 V
Electrical Characteristics
(TA=0 ºC to 70 ºC, VCC=3.3V±5%)
Parameter Symbol Min. Typ. Max. Unit Note
Total Supply Current
LCP-2125A4EDM(H)
LCP-2125B4QSM(T)
ICCT
220
250
mA
Transmitter
Transmitter Differential Input Voltage VDT 0.5 2.4 V 2
Transmitter Disable Input-High VDISH 2 VCC+0.3 V
Transmitter Disable Input-Low VDISL 0 0.8 V
Transmitter Fault Pull up Resistor RTX_FAULT 4.7 10 k 3
Transmitter Fault Output-High VTXFH 2 VCC+0.3 V
Transmitter Fault Output-Low VTXFL 0 0.8 V
Receiver
Receiver Differential Output Voltage VDR 0.37 1.0 2.0 V 4
Receiver LOS Load RRXLOS 4.7 10 k 3
LOS Output Voltage-High VLOSH 2 VCC+0.3 V
LOS Output Voltage-Low VLOSL 0 0.8 V
Output Data Rise/Fall Time tr/ tf 250 psec 5
Notes:
1. Extended temperature range available.
2. Internally AC coupled and terminated to 100Ohm differential load.
3. Pull up to VCC 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
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
3 Oct, 2004
Rev. 0A
www.deltaww.com
Optical Characteristics of LCP-2125A4EDM(H)
(VCC=3.3V±5%, Data Rate=2.125Gb/sec, PRBS=27-1 NRZ, 50/125µm MMF)
Parameter Symbol Min. Typ. Max. Unit Note
Transmitter
Output Optical Power (Avg.) PO -9.5 -4 dBm
Optical Extinction Ratio 9 dB
Center Wavelength λC 830 850 860 nm
Spectral Width (RMS) σ 0.85 nm
Optical Rise/Fall Time tr/ tf 150/200 psec 1
Relative Intensity Noise RIN -117 dB/Hz
Output Eye Complies with the ANSI FC-PI Rev. 13 specification, and is class 1
laser eye safety
Receiver
Sensitivity (Avg.) PIN -17 dBm 2
Input Optical Wavelength λ 850 nm
LOS-De-asserted (Avg.) PA -17 dBm
LOS-Asserted (Avg.) PD -30 dBm
LOS-Hysteresis PA-PD 0.5 dB
Overload PO -4 dBm
Notes:
1. These are 20%~80% values
2. The sensitivity is provided at a BER of 1×10-10 or better with an input signal consisting of 2.125Gb/s,
27-1 PRBS.
Mask of the eye diagram for the optical transmit signal
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
4 Oct, 2004
Rev. 0A
www.deltaww.com
Optical Characteristics of LCP-2125B4QDM(H、T)
(VCC=3.3V±5%, Data Rate=2.125Gb/sec, PRBS=27-1 NRZ, 9/125µm SMF)
Parameter Symbol Min. Typ. Max. Unit Note
Transmitter
Output Optical Power (Avg.) PO -10 -3 dBm
Optical Extinction Ratio 8.2 dB
Center Wavelength λC 1270 1310 1355 nm
Spectral Width σ 4 nm
Optical Rise/Fall Time tr/tf 150/200 psec 1
Relative Intensity Noise RIN -120 dB/Hz
Output Eye Complies with the ANSI FC-PI Rev. 13 specification, and is class 1
laser eye safety
Receiver
Sensitivity (Avg.) PIN -17 dBm 1
Input Optical Wavelength λ 1310 nm
LOS-Asserted (Avg.) PA -17 dBm 2
LOS-De-asserted (Avg.) PD -30 dBm 2
LOS-Hysteresis PA-PD 0.5 dB
Overload PO -3 dBm
Notes:
1. These are unfiltered 20%~80% values
2. The sensitivity is provided at a BER of 1×10-10 or better with an input signal consisting of 2.125Gb/s,
27-1 PRBS and ER=9dB.
Mask of the eye diagram for the optical transmit signal
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
5 Oct, 2004
Rev. 0A
www.deltaww.com
SFP Transceiver Electrical Pad Layout
Pin Function Definitions
Pin Num. Name Function Plug Seq. Notes
1 VeeT Transmitter Ground 1
2 TX Fault Transmitter Fault Indication 3 Note 1
3 TX Disable Transmitter Disable 3 Note 2
Module disables on high or open
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.
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
6 Oct, 2004
Rev. 0A
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=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.
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
7 Oct, 2004
Rev. 0A
www.deltaww.com
Recommend Circuit Schematic
Laser Diode
Photo Diode
1uH
1uH
0.1uF10uF
0.1uF
0.01uF
0.01uF
0.01uF
0.01uF
0.1uF10uF
RES1
RES1
100 Ohms*
RES1 RES1 RES1
10k Ohms
100 Ohms
VCC
Protocol Vcc
SerDes ICProtocol IC
PLD / PAL Mod_def 2
Mod_def 1
Mod_def 0
3.3V
3.3V
DELTA SFP Module
Preamp &
Tx_Disable
Quantizer
Tx_Fault
TD +
TD -
VeeT
RD +
RD -
Rx_LOS
VeeR
Tx_Disable
Tx_Fault
Rx_LOS
RES1 = 4.7k to 10k Ohms
VccT
VccR
Laser Driver
* Depands on SerDes IC used
EEPROM
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
8 Oct, 2004
Rev. 0A
www.deltaww.com
Package Outline Drawing
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
9 Oct, 2004
Rev. 0A
www.deltaww.com
SFP timing parameters for SFP management
Parameter Symbol Min. Max. Unit Unit Conditions
TX_DISABLE Assert
time t_off 10 µsec
Time from rising edge of TX_DISABLE to
when the optical output falls below 10% of
nominal
TX_DISABLE
Negate time t_on 1 msec
Time from falling edge of TX_DISABLE to
when the modulated optical output rises
above 90% of nominal
Time to initialize,
including reset of
TX_FAULT
t_init 300 msec From power on or negation of TX_Fault using
TX Disable.
TX Fault Assert
Time
t_fault
100 µsec Time from fault to TX fault on.
TX_DISABLE to
reset t_rest 10
µsec Time TX Disable must be held high to reset
TX_Fault
LOS Assert Time t_loss_on 100 µsec Time from LOS state to Rx LOS assert
LOS Deassert Time t_loss_off 100 µsec Time from non-LOS state to Rx LOS deassert
Serial ID Clock Rate f_serial_clock 100 kHz
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
10 Oct, 2004
Rev. 0A
www.deltaww.com
SFP timing parameters:
Power on initialization of SFP transceiver, TX_DISABLE
negated
Power on initialization of SFP, TX_DISABLE asserted
Initialization during hot plugging of SFP TRANSCEIVER.
Example of initialization during hot plugging, TX_DISABLE
negated.
SFP TX_DISABLE timing during normal operation.
Detection of transmitter safety fault condition Successful recovery from transient safety fault condition
Unsuccessful recovery from safety fault condition Timing of LOS detection
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
11 Oct, 2004
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
55
Alarm and Warning Thresholds
(56 bytes)
95
Serial ID Defined by SFP MSA
(96 bytes) 56
95
Cal Constants
(40 bytes)
96 96
119
Real Time Diagnostic Interface
(24 bytes)
127
Vender Specific
(32 bytes) 120
127
Vender Specific
128 128
247
User Writable EEPROM
(120 bytes)
255
Reserved in SFP MSA
(128 bytes)
248
255
Vender Specific
(8 bytes)
Digital Diagnostic Memory Map Specific Data Field Descriptions
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
12 Oct, 2004
Rev. 0A
www.deltaww.com
LCP-2125A4EDM EEPROM Serial ID Memory Contents (2-Wire Address A0h)
Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII
00 03 25 20 50 45 E 75 SN 100 00 125 00
01 04 26 20 51 44 D 76 SN 101 00 126 00
02 07 27 20 52 4D M 77 SN 102 00 127 00
03 00 28 20 53 20 78 SN 103 00 128 00 Note5
04 00 29 20 54 20 79 SN 104 00
05 00 30 20 55 20 80 SN 105 00
06 01 31 20 56 30 81 SN 106 00
07 20 32 20 57 30 82 SN 107 00
08 40 33 20 58 30 83 SN 108 00
09 0C 34 20 59 30 84 DC Note 3 109 00
10 05 35 20 60 03 85 DC 110 00
11 01 36 00 61 52 86 DC 111 00
12 15 37 00 62 00 87 DC 112 00
13 00 38 00 63 CS1 Note1 88 DC 113 00
14 00 39 00 64 00 89 DC 114 00
15 00 40 4C L 65 1A 90 DC 115 00
16 1E 41 43 C 66 05 91 DC 116 00
17 0F 42 50 P 67 05 92 68 117 00
18 00 43 2D - 68 SN Note 2 93 B0 118 00
19 00 44 32 2 69 SN 94 01 119 00
20 44 D 45 31 1 70 SN 95 CS2 Note 4 120 00
21 45 E 46 32 2 71 SN 96 00 121 00
22 4C L 47 35 5 72 SN 97 00 122 00
23 54 T 48 41 A 73 SN 98 00 123 00
24 41 A 49 34 4 74 SN 99 00 124 00
LCP-2125B4QDM EEPROM Serial ID Memory Contents (2-Wire Address A0h)
Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII
00 03 25 20 50 51 Q 75 SN 100 00 125 00
01 04 26 20 51 44 D 76 SN 101 00 126 00
02 07 27 20 52 4D M 77 SN 102 00 127 00
03 00 28 20 53 20 78 SN 103 00 128 00 Note5
04 00 29 20 54 20 79 SN 104 00
05 00 30 20 55 20 80 SN 105 00
06 02 31 20 56 30 81 SN 106 00
07 12 32 20 57 30 82 SN 107 00
08 00 33 20 58 30 83 SN 108 00
09 01 34 20 59 30 84 DC Note 3 109 00
10 05 35 20 60 05 85 DC 110 00
11 01 36 00 61 1E 86 DC 111 00
12 15 37 00 62 00 87 DC 112 00
13 00 38 00 63 CS1 Note1 88 DC 113 00
14 0A 39 00 64 00 89 DC 114 00
15 64 40 4C L 65 1A 90 DC 115 00
16 00 41 43 C 66 05 91 DC 116 00
17 00 42 50 P 67 05 92 68 117 00
18 00 43 2D - 68 SN Note 2 93 B0 118 00
19 00 44 32 2 69 SN 94 01 119 00
20 44 D 45 31 1 70 SN 95 CS2 Note 4 120 00
21 45 E 46 32 2 71 SN 96 00 121 00
22 4C L 47 35 5 72 SN 97 00 122 00
23 54 T 48 42 B 73 SN 98 00 123 00
24 41 A 49 34 4 74 SN 99 00 124 00
Notes:
1) Byte 63: Check sum of bytes 0-62.
2) Byte 68-83 (SN): Serial number.
3) Byte 84-91 (DC): Date code.
4) Byte 95 (CS2): Check sum of bytes 64-94
5) Bytes 128-255 had been set hex. 00.
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
13 Oct, 2004
Rev. 0A
www.deltaww.com
Digital Diagnostic Monitoring Interface
LCP-2125A4EDM Series Alarm and W arning Thresholds (2-Wire Address A2h)
LCP-2125A4EDM LCP-2125A4EDMH
Address #
Bytes Name
HEX Real Value HEX Real Value
00-01 2 Temp High Alarm 5500 85℃ 6400 100℃
02-03 2 Temp Low Alarm 0000 0℃ F600 -10℃
04-05 2 Temp High Warning 5000 80℃ 5F00 95℃
06-07 2 Temp Low Warning 0A00 10℃ 0000 0℃
08-09 2 Voltage High Alarm 875A 3.465V 875A 3.465 V
10-11 2 Voltage Low Alarm 7A76 3.135V 7A76 3.135 V
12-13 2 Voltage High Warning 84D0 3.4V 84D0 3.4 V
14-15 2 Voltage Low Warning 7D00 3.2V 7D00 3.2 V
16-17 2 Bias High Alarm 1D4C 15mA 1D4C 15mA
18-19 2 Bias Low Alarm 0000 0mA 0000 0mA
20-21 2 Bias High Warning 1388 10mA 1388 10mA
22-23 2 Bias Low Warning 0000 0mA 0000 0mA
24-25 2 TX Power High Alarm 0F8D -4dBm 0F8D -4dBm
26-27 2 TX Power Low Alarm 0462 -9.5dBm 0462 -9.5dBm
28-29 2 TX Power High Warning 0C5A -5dBm 0C5A -5dBm
30-31 2 TX Power Low Warning 0585 -8.5dBm 0585 -8.5dBm
32-33 2 RX Power High Alarm 1394 -3dBm 1394 -3dBm
34-35 2 RX Power Low Alarm 009E -18dBm 009E -18dBm
36-37 2 RX Power High Warning 0C5A -5dBm 0C5A -5dBm
38-39 2 RX Power Low Warning 018E -14dBm 018E -14dBm
40-55 16 Reserved
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
14 Oct, 2004
Rev. 0A
www.deltaww.com
LCP-2125B4QDM Series Alarm and Warning Thresholds (2-Wire Address A2h)
Address LCP-2125B4QDM LCP-2125B4QDMH LCP-2125B4QDM
T
#
Bytes Name
HEX Real
Value HEX Real
Value HEX Real
Value
00-01 2 Temp High Alarm 5500 85℃ 6400 100℃ 6400 100℃
02-03 2 Temp Low Alarm 0000
0℃ F600 -10℃ D800 -40℃
04-05 2 Temp High Warning 5000
80℃ 5F00 95℃ 5F00 95℃
06-07 2 Temp Low Warning 0A00
10℃ 0000 0℃ E200 -30℃
08-09 2 Voltage High Alarm 875A 3.465V 875A 3.465 V 875A 3.465 V
10-11 2 Voltage Low Alarm 7A76 3.135V 7A76 3.135 V 7A76 3.135 V
12-13 2 Voltage High Warning 84D0 3.4V 84D0 3.4 V 84D0 3.4 V
14-15 2 Voltage Low Warning 7D00 3.2V 7D00 3.2 V 7D00 3.2 V
16-17 2 Bias High Alarm 7530 60mA 7530 60mA 7530 60mA
18-19 2 Bias Low Alarm 0000 0mA 0000 0mA 0000 0mA
20-21 2 Bias High Warning 61A8 50mA 61A8 50mA 61A8 50mA
22-23 2 Bias Low Warning 09C4 5mA 09C4 5mA 09C4 5mA
24-25 2 TX Power High Alarm 1394 -3dBm 1394 -3dBm 1394 -3dBm
26-27 2 TX Power Low Alarm 03E8 -10dBm 03E8 -10dBm 03E8 -10dBm
28-29 2 TX Power High Warning 0F8D -4dBm 0F8D -4dBm 0F8D -4dBm
30-31 2 TX Power Low Warning 04EB -9dBm 04EB -9dBm 04EB -9dBm
32-33 2 RX Power High Alarm 1394 -3dBm 1394 -3dBm 1394 -3dBm
34-35 2 RX Power Low Alarm 009E -18dBm 009E -18dBm 009E -18dBm
36-37 2 RX Power High Warning 0C5A -5dBm 0C5A -5dBm 0C5A -5dBm
38-39 2 RX Power Low Warning 018E -14dBm 018E -14dBm 018E -14dBm
40-55 16 Reserved
Calibration constants (2 Wire Address A2h)
Address # Byt e s Name Description
56-59 4 Rx_PWR (4) Rx_PWR (4) is set to zero for “internally calibrated” devices.
60-63 4 Rx_PWR (3) Rx_PWR (3) is set to zero for “internally calibrated” devices.
64-67 4 Rx_PWR (2) Rx_PWR (2) is set to zero for “internally calibrated” devices.
68-71 4 Rx_PWR (1) Rx_PWR (1) is set to 1 for “internally calibrated” devices.
72-75 4 Rx_PWR (0) Rx_PWR (0) is set to zero for “internally calibrated” devices.
76-77 2 Tx_I (Slope) Tx_I (Slope) is set to 1 for “internally calibrated” devices.
78-79 2 Tx_I (Offset) Tx_I (Offset) is set to zero for “internally calibrated” devices.
80-81 2 Tx_PWR (Slope) Tx_PWR (Slope) is set to 1 for “internally calibrated” devices.
82-83 2 Tx_PWR (Offset) Tx_PWR (Offset) is set to zero for “internally calibrated” devices.
84-85 2 T (Slope) T (Slope) is set to 1 for “internally calibrated” devices.
86-87 2 T (Offset) T (Offset) is set to zero for “internally calibrated” devices.
88-89 2 V (Slope) V (Slope) is set to 1 for “internally calibrated” devices.
90-91 2 V (Offset) V (Offset) is set to zero for “internally calibrated” devices.
92-94 3 Reserved Reserved
95 1 Checksum Byte 95 contains the low order 8 bits of the sum of bytes 0 – 94.
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
15 Oct, 2004
Rev. 0A
www.deltaww.com
Digital Values (2 Wire Address A2h)
Temperature (Signed twos complement value)
A2h Byte 96 (Temperature MSB) A2h Byte 97 (Temperature LSB)
S 26 25 24 23 22 21 20 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8
Vcc, TX Bias, TX Power, RX Power (Unsigned v alues)
A2h Byte 98 (Vcc MSB) A2h Byte 99 (Vcc LSB)
A2h Byte 100 (TX Bias MSB) A2h Byte 101 (TX Bias LSB)
A2h Byte 102 (TX Power MSB) A2h Byte 103 (TX Power LSB)
A2h Byte 104 (RX Power MSB) A2h Byte 105 (RX Power LSB)
215 2
14 213 212 211 210 29 28 27 26 25 24 23 22 21 20
The digital value conversions are updated every 13ms (nominal) or 20ms (max) in rotation. After getting
digital value, each measurement could be obtained by multiplying digital value by corresponding LSB
value:
Temperature = Temp (Digital Value) × LSBTe m p = Temp (Digital Value) × 1
256 ; Temperature<128
Temperature = Temp (Digital Value) × LSBTe m p = [Temp (Digital Value) × 1
256]-256 ; Temperature≥128
Vcc = Vcc(Digital Value) × LSBVcc=VCC(Digital Value) × 100µV
TX Bias Current = TX Bias Current (Digital Value) × LSBTX,Bias = TX Bias Current (Digital Value) × 2µA
TX Power = TX Power (Digital Value) × LSBTXPower = TX Power (Digital Value) × 0.1µW
RX Power = RX Power (Digital Value) × LSBRXPower = RX Power (Digital Value) × 0.1µW
Digital Diagnostic Monitor A ccuracy
Parameter Typical Value Note
Transceiver Temperature ± 3℃ Note 1
Power Supply Voltage ± 3% Note 2
TX Bias Current ± 10%
TX Optical Power ± 3dB Note 3
RX Optical Power ± 3dB Note 4
Notes:
1) Temperature is measured internal to the transceiver.
2) Voltage is measured internal to the transceiver.
3) Valid from –10 to –3 dBm.
4) Valid from -21 to 0 dBm.
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
16 Oct, 2004
Rev. 0A
www.deltaww.com
Status Bits (2 Wire Address A2h)
Address Bit Name Description
110 7 TX Disable State Not implement.
110 6 Soft TX Disable Not implement.
110 5 Reserved
110 4 RX Rate Select State Not implement.
110 3 Soft RX Rate Select Not implement.
110 2 TX Fault Digital state of the TX Fault Output Pin. Updated within 100msec of
change on pin.
110 1 LOS Digital state of the LOS Output Pin. Updated within 100msec of
change on pin.
110 0 Data_Ready_Bar
Indicates transceiver has achieved power up and data is ready. Bit
remains high until data is ready to be read at which time the device
sets the bit low.
Alarm and Warning Flag Bits (2 Wire Address A2h)
Address Bit Name Description
112 7 Temp High Alarm Set when internal temperature exceeds high alarm level.
112 6 Temp Low Alarm Set when internal temperature is below low alarm level.
112 5 Vcc High Alarm Set when internal supply voltage exceeds high alarm level.
112 4 Vcc Low Alarm Set when internal supply voltage is below low alarm level.
112 3 TX Bias High Alarm Set when TX Bias current exceeds high alarm level.
112 2 TX Bias Low Alarm Set when TX Bias current is below low alarm level.
112 1 TX Power High Alarm Set when TX output power exceeds high alarm level.
112 0 TX Power Low Alarm Set when TX output power is below low alarm level.
113 7 RX Power High Alarm Set when Received Power exceeds high alarm level.
113 6 RX Power Low Alarm Set when Received Power is below low alarm level.
113 5-0 Reserved Alarm
114 All Reserved
115 All Reserved
116 7 Temp High Warning Set when internal temperature exceeds high warning level.
116 6 Temp Low Warning Set when internal temperature is below low warning level.
116 5 Vcc High Warning Set when internal supply voltage exceeds high warning level.
116 4 Vcc Low Warning Set when internal supply voltage is below low warning level.
116 3 TX Bias High Warning Set when TX Bias current exceeds high warning level.
116 2 TX Bias Low Warning Set when TX Bias current is below low warning level.
116 1 TX Power High Warning Set when TX output power exceeds high warning level.
116 0 TX Power Low Warning Set when TX output power is below low warning level.
117 7 RX Power High Warning Set when Received Power exceeds high warning level.
117 6 RX Power Low Warning Set when Received Power is below low warning level.
117 5-0 Reserved Warning
118 All Reserved
119 All Reserved
.
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
17 Oct, 2004
Rev. 0A
www.deltaww.com
Regulatory Compliance
Test Item Reference Qty’ Evaluation
(#1)
Electromagnetic Interference
EMC
FCC Class B
EN 55022 Class B
CISPR 22
5
(#2) Immunity：
Radio Frequency
Electromagnetic Field
EN 61000-4-3
IEC 1000-4-3
5
(#3) Immunity：
Electrostatic Discharge to the
Duplex SC Receptacle
EN 61000-4-2
IEC 1000-4-2
IEC 801.2
5
(#4) Electrostatic Discharge to
the Electrical Pins
MIL-STD-883C
Method 3015.4
EIAJ#1988.3.2B
Version 2,
Machine model
5
(1) Satisfied with electrical characteristics of
product spec.
(2) No physical damage
Ordering information
Part Number Description
LCP-2125A4EDM VCSEL based Multi-mode 850nm transceiver. Operating temperature: 0 to +70 oC
LCP-2125A4EDMH VCSEL based Multi-mode 850nm transceiver. Operating temperature: -10 to +85 oC
LCP-2125B4QDM FP laser based Single-mode 1310nm transceiver. Operating temperature: 0 to +70
oC
LCP-2125B4QDMH FP laser based Single-mode 1310nm transceiver. Operating temperature: -10 to +85
oC
LCP-2125B4QDMT FP laser based Single-mode 1310nm transceiver. Operating temperature: -40 to +85
oC
LCP-2125A4EDM(H), LCP-2125B4QDM(T)
DELTA ELECTRONICS, INC.
18 Oct, 2004
Rev. 0A
www.deltaww.com
Related Product
LCP-155xxxx: 155Mb/s, Multimode and single mode transceiver from 2km to 40km
LCP-622xxxx: 622Mb/s, Single mode transceiver from 15km to 40km.
LCP-1250xxxx: 1.25Gb/s, Multimode and single mode transceiver from 550m to 10km
LCP-2488xxxx: 2.5Gb/s, multimode and single mode transceiver from 300m to 15km
