Delta Electronics LCP-2488A4EDRxM Manuale utente

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

1 Nov., 2006

Rev. 0A

www.deltaww.com

RoHS Compliant Multirate Small Form Factor Pluggable Transceiver

for SONET OC-48/SDH STM-16 with Digital Diagnostic Function

FEATURES

zCompliant with SFP Transceiver SFF-8472

MSA specification with internal calibration

zCompliant with the 2.125GBd Fiber Channel

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

zCompliant with the 1.0625GBd Fiber Channel

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

zCompliant with Specifications for IEEE

802.3z/Gigabit Ethernet

zSingle +3.3V Power Supply and TTL Logic

Interface

zLaser Class 1 Product which comply with the

requirements of IEC 60825-1 and IEC 60825-2

zDuplex 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, VCC, TX optical power, TX

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.

Applications

zSONET OC-48/STM-1

zSONET OC-12/STM-4

zSONET OC-3/STM-16

zGigabit Ethernet/ Fibre Channel

Performance

zLCP-2488A4EDRxM Data Link up to 300m in

50/125μm Multi-Mode Fiber

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

2 Nov., 2006

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

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 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2

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 0.35 0.7 2 V 3

Receiver LOS Load RRXLOS 4.7 10 k2

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/ tf200 psec 4

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 100 Ohm differential termination at or internal to Serializer/

Deserializer.

4. These are 20%~80% values

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

3 Nov., 2006

Rev. 0A

www.deltaww.com

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

Center Wavelength λC830 850 860 nm

Spectral Width (RMS) σ0.85 nm

Optical Rise/Fall Time tr/ tf150/200 psec 1

Relative Intensity Noise RIN -117 dB/Hz

Output Eye 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

@ OC-12

@ OC-3

-17

-20

-21

dBm

Input Optical Wavelength λ850 nm

LOS-De-asserted (Avg.) PA-17 dBm

LOS-Asserted (Avg.) PD-30 dBm

LOS-Hysteresis PA-PD0.5 dB

Overload PO-3 dBm

Notes:

1. These are 20%~80% values

2. Measured with 9dB extinction ratio light source and PRBS 223-1 test pattern.

3. Measured with 9dB extinction ratio light source and PRBS 27-1 test pattern.

Mean level of logical “1”

Mean level of logical “0”

Amplitude

Time

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

1.25

1.00

0.75

0.25

0.00

-0.25

Mean level of logical “1”

Mean level of logical “0”

Amplitude

Time

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

1.25

1.00

0.75

0.25

0.00

-0.25

Mask of the eye diagram for the optical transmit signal

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

4 Nov., 2006

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-2488A4EDRxM

DELTA ELECTRONICS, INC.

5 Nov., 2006

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 – 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.

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

6 Nov., 2006

Rev. 0A

www.deltaww.com

Recommend Circuit Schematic

Laser Diode

Photo Diode

1uH

0.1uF10uF

0.1uF

0.01uF

0.1uF10uF

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

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-2488A4EDRxM

DELTA ELECTRONICS, INC.

7 Nov., 2006

Rev. 0A

www.deltaww.com

Package Outline Drawing

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

8 Nov., 2006

Rev. 0A

www.deltaww.com

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 t_init 300 msec 3

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.

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

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

9 Nov., 2006

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)

Serial ID Defined by SFP MSA

(96 bytes) 56

Cal Constants

(40 bytes)

96 96

119

Real Time Diagnostic Interface

(24 bytes)

127

Vender Specific

(32 bytes) 120

127

Vender Specific (Note)

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

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.

LCP-2488A4EDRxM

DELTA ELECTRONICS, INC.

10 Nov., 2006

Rev. 0A

www.deltaww.com

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

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