Delta Electronics LCP-2488A4EDRxM User Manual

LCP-2488A4EDRxM

RoHS Compliant Multirate Small Form Factor Pluggable Transceiver
for SONET OC-48/SDH STM-16 with Digital Diagnostic Function

FEATURES

z Compliant with SFP Transceiver SFF-8472

MSA specification with internal calibration

z Compliant with the 2.125GBd Fiber Channel

FC-PI 200-M5-SN-I Rev.13

z Compliant with the 1.0625GBd Fiber Channel

FC-PI 100-M5-SN-I Rev.13

z Compliant with Specifications for IEEE

802.3z/Gigabit Ethernet

z Single +3.3V Power Supply and TTL Logic

Interface

z Laser Class 1 Product which comply with the

requirements of IEC 60825-1 and IEC 60825-2

z Duplex LC Connector interface

Description

The LCP-2488A4EDRxM is hot pluggable

3.3V Small-Form-Factor transceiver modules

designed expressly for high-speed communication

applications that require rates up to 2.5Gb/s. The

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-2488A4EDRxM is designed to be

compliant with SFF-8472 SFP Multi-source

Agreement (MSA) with five digital monitoring

functions: Temperature, V

laser bias current, and RX received optical power.

The post-amplifier of the LCP-2488A4EDRxM

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.

, TX optical power, TX

CC

Applications

z SONET OC-48/STM-1

z SONET OC-12/STM-4

z SONET OC-3/STM-16

z Gigabit Ethernet/ Fibre Channel

Performance

z LCP-2488A4EDRxM Data Link up to 300m in

50/125μm Multi-Mode Fiber

DELTA ELECTRONICS, INC.

1 Nov., 2006

Rev. 0A

www.deltaww.com

LCP-2488A4EDRxM

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
Case Operating Temperature TC -5 70 ºC 1
Supply Voltage VCC 3.135 3.465 V

Note 1: See order information

Electrical Characteristics

(VCC=3.3V ± 5%)

Parameter Symbol Min. Typ. Max. Unit Note
Total Supply Current ICCT 250 mA

Transmitter

Transmitter Differential Input Voltage VDT 0.5 2.4 V 1
Transmitter Disable Input-High V
Transmitter Disable Input-Low V
Transmitter Fault Pull up Resistor R
Transmitter Fault Output-High V
Transmitter Fault Output-Low V

Receiver

Receiver Differential Output Voltage VDR 0.35 0.7 2 V 3
Receiver LOS Load R
LOS Output Voltage-High V
LOS Output Voltage-Low V
Output Data Rise/Fall Time tr/ tf 200 psec 4

Notes:

1. Internally AC coupled and terminated to 100Ohm differential load.

2 VCC+0.3 V

DISH

0 0.8 V

DISL

TX_FAULT

TXFH

TXFL

RXLOS

LOSH

LOSL

4.7 10 k 2

2 VCC+0.3 V

0 0.8 V

4.7 10 k 2

2 VCC+0.3 V

0 0.8 V

2. Pull up to V

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. 0A

DELTA ELECTRONICS, INC.

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LCP-2488A4EDRxM

Optical Characteristics

(VCC=3.3V ± 5%, Data Rate=2.488Gb/sec, PRBS=223-1 NRZ)

Parameter Symbol Min. Typ. Max. Unit Note

Transmitter

Output Optical Power (Avg.) PO -9.5 -4 dBm
Optical Extinction Ratio ER 8.2 dB

C

Center Wavelength
Spectral Width (RMS)
Optical Rise/Fall Time
Relative Intensity Noise

Output Eye

λ

σ

/ tf 150/200 psec 1

t

r

RIN -117 dB/Hz

Complies with the IEEE 802.3z/D2 specification, and is class 1 laser
eye safety

Receiver

Sensitivity (Avg.)
@ OC-48
@ 2x Fibre Channel
@ Gigabit Ethernet

P

IN

@ OC-12
@ OC-3

Input Optical Wavelength

λ

LOS-De-asserted (Avg.) PA -17 dBm
LOS-Asserted (Avg.) PD -30 dBm
LOS-Hysteresis PA-PD 0.5 dB
Overload PO -3 dBm

Notes:

1. These are 20%~80% values

2. Measured with 9dB extinction ratio light source and PRBS 2

3. Measured with 9dB extinction ratio light source and PRBS 2

830 850 860 nm

0.85 nm

-17

-17

-17

-20

-21

dBm

2
3
3
2
2

850 nm

23

-1 test pattern.

7

-1 test pattern.

Amplitude

Amplitude

Optical Pulse Mask with Bessel Fil ter Specified in ITU-T G.957

Optical Pulse Mask with Bessel Fil ter Specified in ITU-T G.957

Mask of the eye diagram for the optical transmit signal

DELTA ELECTRONICS, INC.

1.25

1.25

1.00

1.00

0.75

0.75

0.25

0.25

0.00

0.00

-0.25

-0.25

Mean level of logical “1”

Mean level of logical “1”

Mean level of logical “0”

Mean level of logical “0”

Time

Time

3 Nov., 2006

www.deltaww.com

Rev. 0A

SFP Transceiver Electrical Pad Layout

LCP-2488A4EDRxM

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

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.

4 Nov., 2006

Rev. 0A

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LCP-2488A4EDRxM

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 – 10Kresistor 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.

5 Nov., 2006

Rev. 0A

www.deltaww.com

Recommend Circuit Schematic

LCP-2488A4EDRxM

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 RES1 RES1

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.

6 Nov., 2006

Rev. 0A

www.deltaww.com

Package Outline Drawing

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

7 Nov., 2006

Rev. 0A

www.deltaww.com

LCP-2488A4EDRxM

SFP timing parameters for SFP management

Parameter Symbol Min. Max. Unit Note

TX_DISABLE Assert time t_off 10 μsec 1
TX_DISABLE Negate time t_on 1 msec 2
Time to initialize, including
reset of TX_FAULT
TX Fault Assert Time t_fault 100 μsec 4
TX_DISABLE to reset t_rest 10 μsec 5
LOS Assert Time t_loss_on 100 μsec 6
LOS Deassert Time t_loss_off 100 μsec 7
Serial ID Clock Rate f_serial_clock 100 kHz

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.

Time TX Disable must be held high to reset TX_Fault

5)

6)

Time from LOS state to Rx LOS assert

t_init 300 msec 3

7) Time from non-LOS state to Rx LOS deassert

DELTA ELECTRONICS, INC.

8 Nov., 2006

Rev. 0A

www.deltaww.com

LCP-2488A4EDRxM

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)

Serial ID Defined by SFP MSA

95
96 96

127

128 128

(96 bytes)

Vender Specific

(32 bytes)

Reserved in SFP MSA

(128 bytes)

55
56

Cal Constants

(40 bytes)

95

Real Time Diagnostic Interface

(24 bytes)

119
120

Vender Specific (Note)

127

User Writable EEPROM

(120 bytes)

247

255

Digital Diagnostic Memory Map Specific Data Field Descriptions

Note:

1) Write the password (11h, 11h, 11h, 11h) on the bytes of 123-126 of address A2h then the address of

bytes 128-255 (User Writable) can be read and written.

DELTA ELECTRONICS, INC.

248

255

9 Nov., 2006

Vender Spe cific

(8 bytes)

www.deltaww.com

Rev. 0A

LCP-2488A4EDRxM

EEPROM Serial ID Memory Contents (2-Wire Address A0h)

Address Hex ASCII Address Hex ASCII Address Hex ASCII

00 03 43 PN 86 DC
01 04 44 PN 87 DC
02 07 45 PN 88 DC
03 00 Note 1 46 PN 89 DC
04 00 47 PN 90 DC
05 00 48 PN 91 DC
06 xx 49 PN 92 68
07 xx 50 PN 93 B0
08 xx 51 PN 94 02
09 xx 52 PN 95 CS2 Note 9
10 xx 53 PN 96 00
11 05 54 PN 97 00
12 19 55 PN 98 00
13 00 56 30 99 00
14 00 57 30 100 00
15 00 58 30 101 00
16 xx Note 2 59 0A 102 00
17 xx Note 3 60 CW Note 5 103 00
18 00 61 CW Note 5 104 00
19 00 62 00 105 00
20 44 D 63 CS1 Note 6 106 00
21 45 E 64 00 107 00
22 4C L 65 1A 108 00
23 54 T 66 05 109 00
24 41 A 67 05 110 00
25 20 68 SN Note 7 111 00
26 20 69 SN 112 00
27 20 70 SN 113 00
28 20 71 SN 114 00
29 20 72 SN 115 00
30 20 73 SN 116 00
31 20 74 SN 117 00
32 20 75 SN 118 00
33 20 76 SN 119 00
34 20 77 SN 120 00
35 20 78 SN 121 00
36 00 79 SN 122 00
37 00 80 SN 123 00
38 00 81 SN 124 00
39 00 82 SN 125 00
40 PN Note4 83 SN 126 00
41 PN 84 DC Note 8 127 00
42 PN 85 DC 128 00 Note 10

Notes:

1) Byte 3~10: Code for electronic compatibility or optical compatibility.

2) Byte 16: Link length supported for 50/125μm MM fiber, units of 10 m.

3) Byte 17: Link length supported for 62.5/125μm MM fiber, units of 10 m.

4) Byte 40-55: Delta part number

5) Byte 60-61: The center wavelength of transmitter

6) Byte 63: Check sum of bytes 0-62

7) Byte 68-83: Serial number

10 Nov., 2006

DELTA ELECTRONICS, INC.

Rev. 0A

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8) Byte 84-91: Date code

9) Byte 95: Check sum of bytes 64-94

10) Byte 128 to 255 had been set hex 00

Digital Diagnostic Monitoring Interface

Alarm and Warning Thresholds (2-Wire Address A2h)

LCP-2488A4EDRxM

Address

00-01 2 Temp High Alarm TC (MAX.)+15

#

Bytes

Name Value (Dec.) Unit Note

℃

02-03 2 Temp Low Alarm TC (MIN.)
04-05 2 Temp High Warning T
06-07 2 Temp Low Warning T
08-09 2 Voltage High Alarm Vcc+5%

(MAX.)+10

C

(MIN.)+10

C

Volt
10-11 2 Voltage Low Alarm Vcc-5%
12-13 2 Voltage High Warning Vcc+3%
14-15 2 Voltage Low Warning Vcc-3%
16-17 2 Bias High Alarm I
18-19 2 Bias Low Alarm I
20-21 2 Bias High Warning I
22-23 2 Bias Low Warning I

OP

OP

OP

OP

+10

-5

+7

-3

24-25 2 TX Power High Alarm P+3

mA 2

dBm 3
26-27 2 TX Power Low Alarm P-3
28-29 2 TX Power High Warning P+2
30-31 2 TX Power Low Warning P-2
32-33 2 RX Power High Alarm P
34-35 2 RX Power Low Alarm P
36-37 2 RX Power High Warning P
38-39 2 RX Power Low Warning P

0

S

0

+3

-2

+2

S

dBm 4

40-45 16 Reversed
56-91 36 External Calibration Constants
92-94 3 Reversed

95 1 Checksum 5
96-97 2 Real Time Temperature
98-99 2 Real Time Supply Voltage

100-101 2 Real Time Tx Bias Current
102-103 2 Real Time Tx Optical Power
104-105 2 Real Time Rx Received Power
106-109 4 Reserved

110 1 Optional Status/ Control Bits 6
111 1 Reserved

112- 119 8 Optional Set of Alarm and Warning 7

Notes:

1) T

: Case Operating temperature

C

: Operating current at room temperature. The min. setting current is 0 mA.

2) I

OP

3) P: Operating optical power of transmitter at room temperature.

: Overload optical power of receiver

4) P

0

1

DELTA ELECTRONICS, INC.

11 Nov., 2006

Rev. 0A

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LCP-2488A4EDRxM

P

: Sensitivity optical power of receiver

S

5) Byte 95 contains the low order 8bits of sum of bytes 0-94

6)

State/ Control Bits

Byte Bit Name Description

110 7 Tx Disable State Digital state of the Tx disable input pin
110 6 Soft Tx Disable Read/ Write bit that allow software disable of laser
110 5 Reserved
110 4 Rate Select tate NA
110 3 Soft Rate Select NA
110 2 Tx Fault Digital state of the Tx fault output pin
110 1 LOS Digital state of the LOS output pin.
110 0 Data_Ready_Bar NA

7)

Optional Set of Alarm and Warning

Byte 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
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

Digital Diagnostic Monitor Accuracy

Parameter Ty pical Value Note

Transceiver Temperature
Power Supply Voltage ± 3% 2
TX Bias Current ± 10%
TX Optical Power ± 1.5dB
RX Optical Power ± 3dB

Notes:

DELTA ELECTRONICS, INC.

± 3℃

12 Nov., 2006

www.deltaww.com

1

Rev. 0A

1) Temperature is measured internal to the transceiver.

2) Voltage is measured internal to the transceiver.

Regulatory Compliance

LCP-2488A4EDRxM

Test Item Reference Qty’

(#1)
Electromagnetic Interference
EMC

FCC Class B
EN 55022 Class B
CISPR 22

(#2) Immunity：
Radio Frequency

Electromagnetic Field

EN 61000-4-3
IEC 1000-4-3

(#3) Immunity：
Electrostatic Discharge to the

Duplex SC Receptacle

EN 61000-4-2
IEC 1000-4-2
IEC 801.2

(#4) Electrostatic Discharge to
the Electrical Pins

MIL-STD-883C
Method 3015.4
EIAJ#1988.3.2B
Version 2,
Machine model

Ordering information for SFP modules

Evaluation

5

5

(1) Satisfied with electrical characteristics of

product spec.

5

(2) No physical damage

5

LCP-2488X1X2X3X4X5X6X7

: Fiber

X

1

A: Multi-mode 850nm

X

: Power Supply Voltage and SD Level

2

4: 3.3V, TTL SD Level

Distance

X

:

3

E: 300m

X

:

4

Digital Diagnostic Function
D: DDM series, with digital diagnostic

function

DELTA ELECTRONICS, INC.

X5:

R: RoHS Compliant

X6: Temperature

Blank: -5 to +70 degree C
H: -10 to +85 degree C
T: -40 to +85 degree C

X

: Rate

7

Blank:

single-rate(2488Mbps)

M: Multi-rate

13 Nov., 2006

Rev. 0A

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