Delta Electronics LCP-1250A4FSR Manuale utente

DELTA ELECTRONICS, INC.

1 Nov.,2006

Rev. 0C

www.deltaww.com

RoHS Compliant Small Form Factor Pluggable Transceiver for Gigabit

Ethernet and Fiber Channel

FEATURES

zCompliant with SFP Transceiver MSA

specification

zCompliant with Specifications for IEEE

802.3z/Gigabit Ethernet

zLCP-1250Bxxx compliant with the 1.0625GBd

Fiber Channel 100-SM-LC-L FC-PI Rev.13

zLCP-1250Axxx compliant with the 1.0625GBd

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

zCompliant with Industry Standard RFT

Electrical Connector and Cage

zSingle + 3.3V Power Supply and TTL Logic

Interface

zEEPROM with Serial ID Functionality

zLaser Class 1 Product which comply with the

requirements of IEC 60825-1 and IEC 60825-2

zDuplex LC Connector interface

Description

The LCP-1250xxxx series are hot pluggable

3.3V Small-Form-Factor transceiver module

designed expressly for high-speed

communication applications that require rates of

up to 1.25Gbit/sec. It is compliant with the Gigabit

Ethernet standards, as well as the SFP

Multisource Agreement (MSA).

The LCP-1250xxxx transceivers provide with

the LC receptacle that is compatible with the

industry standard LC connector. The transceiver

is also compatible with industry standard RFT

connector and cage.

The post-amplifier of the LCP-1250xxxx also

includes a LOS (Loss Of Signal) circuit that

provides a TTL logic-high output when an

unusable optical signal level is detected.

The LCP-1250xxxx transceiver is a Class 1

eye safety product. The optical power levels,

under normal operation, are at eye safe level.

Applications

zGigabit Ethernet

zFibre channel

zSwitch to Switch interface

zSwitched backplane applications

zFile server interface

Performance

zLCP-1250A4FSxx Data Link up to 550m in

50/125μm Multi Mode Fiber

zLCP-1250B4QSxx Data Link up to 10km in

9/125μm Single Mode Fiber

DELTA ELECTRONICS, INC.

2 Nov.,2006

Rev. 0C

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

See order

information

Supply Voltage VCC 3.135 3.465 V

Electrical Characteristics

(VCC=3.135V to 3.465V)

Parameter Symbol Min. Typ. Max. Unit Note

Total Supply Current

LCP-1250Axxx

LCP-1250Bxxx

ICCT

250

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 Output-High VTXFH 2 VCC+0.3 V 2

Transmitter Fault Output-Low VTXFL 0 0.8 V 2

Receiver

Receiver Differential Output Voltage VDR 0.35 0.7 2 V 3

LOS Output Voltage-High VLOSH 2 VCC+0.3 V 2

LOS Output Voltage-Low VLOSL 0 0.8 V 2

Output Data Rise/Fall Time tr/ tf400 psec 4

Total Jitter (pk-pk) TJRX 220 psec

Notes:

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

2. Pull up to VCC with a 4.7K – 10K Ohm resistor 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

DELTA ELECTRONICS, INC.

3 Nov.,2006

Rev. 0C

www.deltaww.com

Optical Characteristics (LCP-1250A4FSR)

(VCC=3.135V to 3.465V, Data Rate=1.25Gb/sec, PRBS=27-1 NRZ, 50/125μm MMF)

Parameter Symbol Min. Typ. Max. Unit Note

Transmitter

Output Optical Power (Avg.) PO-9 -3 dBm

Optical Extinction Ratio ER 9 dB

Center Wavelength λC830 850 860 nm

Spectral Width (RMS) σ0.85 nm

Optical Rise/Fall Time tr/tf260 psec 1

Total Jitter (pk-pk) TJTX 220 psec

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.) PIN -17 dBm 2

Input Optical Wavelength λ850 nm

LOS- De-Asserted (Avg.) PD-17 dBm

LOS- asserted (Avg.) PA-30 dBm

LOS-Hysteresis PD-PA0.5 dB

Overload PO-3 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 1250Mb/s,

27-1 PRBS.

Mask of the eye diagram for the optical transmit signal

DELTA ELECTRONICS, INC.

4 Nov.,2006

Rev. 0C

www.deltaww.com

Optical Characteristics (LCP-1250B4QSR)

(VCC=3.135V to 3.465V, Data Rate=1.25Gb/sec, PRBS=27-1 NRZ, 9/125μm SMF)

Parameter Symbol Min. Typ. Max. Unit Note

Transmitter

Output Optical Power (Avg.) PO-9.5 -3 dBm

Optical Extinction Ratio ER 9 dB

Center Wavelength λC1270 1310 1355 nm

Spectral Width σ4 nm

Optical Rise/ Fall Time tr/tf260 psec 1

Total Jitter (pk-pk) TJTX 220 psec

Relative Intensity Noise RIN -120 dB/Hz

Output Eye Complies with the IEEE 802.3z/D2 specification, and is class 1 laser

eye safety

Receiver

Sensitivity (Avg.) PIN -19 dBm 1

Input Optical Wavelength λ1310 nm

LOS- De-Asserted (Avg.) PD-19 dBm 2

LOS- asserted (Avg.) PA-30 dBm 2

LOS-Hysteresis PD-PA0.5 dB

Overload PO-3 dBm

Notes:

1. These are unfiltered 20%~80% values

2. The sensitivity is provided at a BER of 1×10-12 or better with an input signal consisting of 1.25Gb/s,

27-1 PRBS and ER=9dB.

Mask of the eye diagram for the optical transmit signal

DELTA ELECTRONICS, INC.

5 Nov.,2006

Rev. 0C

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.

DELTA ELECTRONICS, INC.

6 Nov.,2006

Rev. 0C

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.

DELTA ELECTRONICS, INC.

7 Nov.,2006

Rev. 0C

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

DELTA ELECTRONICS, INC.

8 Nov.,2006

Rev. 0C

www.deltaww.com

Package Outline Drawing for Metal Housing with Bail de-latch

DELTA ELECTRONICS, INC.

9 Nov.,2006

Rev. 0C

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

DELTA ELECTRONICS, INC.

10 Nov.,2006

Rev. 0C

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

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