Delta Electronics LCP-2488B4HDRx User Manual

RoHS Compliant SFP Transceiver for SONET OC-48/SDH STM-16 with Digital Diagnostic Monitoring Function

FEATURES

z Compliant with SFP Transceiver SFF-8472

MSA specification with internal calibration

z LCP-2488B4HDR compliant with Intra-office

SONET OC-48 / SDH STM-16 (I-16.1)

z Single + 3.3V Power Supply and TTL Logic

Interface

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

Description

The LCP-2488B4HDRx series are 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 LCP-2488B4HDRx series are designed

to be compliant with SFF-8472 SFP Multi-source

Agreement (MSA) with digital diagnostic

monitoring functions: Temperature, V

optical power, TX laser bias current, and RX

received optical power.

The post-amplifier of the LCP-2488B4HDRx

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.

, TX

CC

Performance

Part number Link

budget

LCP-2488B4HDR 8dB 2km

Distance in

SMF

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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 300 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 1 2 V 3 Receiver LOS Load R LOS Output Voltage-High V LOS Output Voltage-Low V

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 100Ohm differential termination at or internal to Serializer/

Deserializer.

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Optical Characteristics

Transmitter

=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=2

(V

CC

Parameter Symbol Min. Typ. Max. Unit Note

Output Optical Power (Avg.) P Optical Extinction Ratio ER 8.2 dB Center Wavelength

Spectral Width

Optical Rise/ Fall Time Relative Intensity Noise Total Jitter (Peak to Peak)

λ

σ

t

r/tf

RIN -120 dB/Hz

TJ

Output Eye Compliant with GR-253 and ITU recommendation G.957

Receiver

=3.3V ± 5%, Data Rate=2488Mb/sec, PRBS=2

(V

CC

Parameter Symbol Min. Typ. Max. Unit Note

Sensitivity (Avg.) PS Input Optical Wavelength

λ

LOS-Deasserted (Avg.) PA LOS-Asserted (Avg.) PD -45 dBm LOS-Hysteresis PA-PD 0.5 dB Overload P0 -3 dBm Reflectance r -12 dB

Notes:

1. These are unfiltered 20%~80% values

2. The sensitivity is provided at a BER of 1×10

23

2

-1 PRBS and ER=9dB.

23

-1 NRZ)

-10 -3

C

1266 1310 1360 nm

dBm

4 nm

150/200 psec 1

50 ps

PP

23

-1 NRZ)

-18

dBm 2

1266 1310 1360 nm

-20

-12

or better with an input signal consisting of 2488Mb/s,

dBm

Mask of the eye diagram for the optical transmit signal

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1.25

1.00

0.75

0.25

Amplitude

0.00

-0.25

Time

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

Mean level of logical “1”

Mean level of logical “0”

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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

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

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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.

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Recommend Circuit Schematic

Protocol Vcc

Tx_Disable

Tx_Fault

Rx_LOS

VCC

SerDes ICProtocol IC

PLD / PAL

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

Laser Driver

Preamp & Quantizer

EEPROM

Laser Diode

Photo Diode

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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

Time from falling edge of TX_DISABLE to when the modulated optical output rises above 90% of

2)

nominal

From power on or negation of TX_Fault using TX Disable

3)

Time from fault to TX fault on.

4)

Time TX Disable must be held high to reset TX_Fault

5)

6) Time from LOS state to Rx LOS assert

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

t_init 300 msec 3

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Package Outline Drawing

FS

Made in x

1040.10 and 1040.11

Complies with 21 CFR

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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

127

User Writable EEPROM

(120 bytes)

247

255

Digital Diagnostic Memory Map Specific Data Field Descriptions

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248

255

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Vender Specific

(8 bytes)

Rev. 0B

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

Address Hex ASCII Address Hex ASCII Address Hex ASCII

00 03 43 2D - 86 DC 01 04 44 32 2 87 DC 02 07 45 34 4 88 DC 03 00 46 38 8 89 DC 04 11 47 38 8 90 DC 05 00 48 42 B 91 DC 06 00 49 34 4 92 68 07 00 50 48 H 93 B0 08 00 51 44 D 94 02 09 00 52 52 R 95 CS2 Note 5 10 00 53 20 Note 1 96 VS Note 6

11 03 54 20 97 VS 12 19 55 20 98 VS 13 00 56 41 99 VS 14 02 57 20 100 VS 15 14 58 20 101 VS 16 00 59 20 102 VS 17 00 60 05 103 VS 18 00 61 1E 104 VS 19 00 62 00 105 VS 20 44 D 63 CS1 Note 2 106 VS 21 45 E 64 00 107 VS 22 4C L 65 1A 108 VS 23 54 T 66 00 109 VS 24 41 A 67 00 110 VS 25 20 68 SN Note 3 111 VS 26 20 69 SN 112 VS 27 20 70 SN 113 VS 28 20 71 SN 114 VS 29 20 72 SN 115 VS 30 20 73 SN 116 VS 31 20 74 SN 117 VS 32 20 75 SN 118 VS 33 20 76 SN 119 VS 34 20 77 SN 120 VS 35 20 78 SN 121 VS 36 00 79 SN 122 VS 37 00 80 SN 123 VS 38 00 81 SN 124 VS 39 00 82 SN 125 VS 40 4C L 83 SN 126 VS 41 43 C 84 DC Note 4 127 VS 42 50 P 85 DC 128 00 Note 7

Notes:

1) Byte 40-55: Delta part number.

2) Byte 63: Check sum of bytes 0-62.

3) Byte 68-83: Serial number.

4) Byte 84-91: Date code.

5) Byte 95: Check sum of bytes 64-94.

6) Byte 96 to 127 are vendor specific contents.

7) Byte 128 to 255 had been set hex 00.

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Digital Diagnostic Monitoring Interface

Alarm and Warning Thresholds (2-Wire Address A2h)

Address

00-01 2 Temp High Alarm TC (MAX.)+8

#

Bytes

Name Value (Dec.) Unit Note

℃

02-03 2 Temp Low Alarm TC (MIN.)-8 04-05 2 Temp High Warning T 06-07 2 Temp Low Warning T 08-09 2 Voltage High Alarm Vcc+0.5

(MAX.)+3

C

(MIN.)-3

C

Volt 10-11 2 Voltage Low Alarm Vcc-0.5 12-13 2 Voltage High Warning Vcc+0.2 14-15 2 Voltage Low Warning Vcc-0.2 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 24-25 2 TX Power High Alarm Ph+2

*2+20

OP

*2+10

OP

mA 2

-20

-10 dBm 3

26-27 2 TX Power Low Alarm Pl -2 28-29 2 TX Power High Warning Ph+1 30-31 2 TX Power Low Warning Pl -1 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

S

+2

-2

+1

-1

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

: Case Operating temperature

1) T

C

2) I

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

OP

3) P

: Maximum value of transmitter optical power

h

Pl: Minimum value of transmitter optical power

4) P

: Overload optical power of receiver

0

P

: Sensitivity optical power of receiver

S

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

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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 Typical Value Note

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

Notes:

1) Temperature is measured internal to the transceiver

2) Voltage is measured internal to the transceiver

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± 3℃

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Rev. 0B

Regulatory Compliance

Test Item Reference

(#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

FCC Class B EN 55022 Class B CISPR 22

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

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

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

Ordering information for SFP modules

Qty’ Evaluation

5

(1) Satisfied with electrical characteristics of

product spec.

5

(2) No physical damage

5

LCP-2488B4HDRX1

X

: Temperature

1

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

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