Delta Electronics LCP-4250A4CDR Series User manual

DELTA ELECTRONICS, INC.

1 2008/3/18

Rev. 0A

www.deltaww.com

RoHS Compliant 4.25Gb/s Short Wavelength Tri-Rate SFP

Transceiver for Fiber Channel

FEATURES

 Compliant with SFP transceiver SFF-8472

MSA specification and Fiber Channel FC-PI-2

 850nm VCSEL laser

 Built-in digital diagnostic monitoring function

 Compliant with 4.25/2.125/1.0625 Gb/s Fiber

Channel (400/200/100-M5/M5E/M6-SN-I)

 Compliant with Industry Standard RFT

Electrical Connector and Cage

 Duplex LC connector

 Laser Class 1 Product which comply with the

requirements of IEC 60825-1 and IEC 60825-2

Description

The LCP-4250A4CDR series are hot pluggable

3.3V Small-Form-Factor transceiver modules

designed expressly for high-speed

communication applications that require rates of

up to 4.25Gb/s. It is compliant with the Fiber

Channel standards FC-PI-2, as well as MSA

SFF-8472.

The LCP-4250A4CDR transceivers provide with

the LC receptacle that is compatible with the

industry standard LCTM connector. The

transceiver is also compatible with industry

standard RFT connector and cage.

The post-amplifier of the LCP-4250A4CDR 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-4250A4CDR transceiver is a Class 1

eye safety product. The optical power levels,

under normal operation, are at eye safe level.

Applications



Tri-Rate 1.063/2.125/4.25 Gb/s Fiber Channel



Up to 400m link over OM3 MMF for 3.072Gbps

CPRI application

Transmission Distances

Data Rate OM3 MMF OM2 MMF OM1 MMF

4.25Gb/s 380m 150m 70m

2.125Gb/s 500m 300m 150m

1.0625Gb/s 860m 550m 300m

DELTA ELECTRONICS, INC.

2 2008/3/18

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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

Electrical Characteristics

(VCC=3.135V to 3.465V)

Parameter Symbol Min. Typ. Max. Unit Note

Total Supply Current ICC 180 300 mA

Transmitter

Transmitter Differential Input Voltage Vin,pp 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 Vout,pp 0.3 1 V 4

Receiver LOS Load RRXLOS 4.7 10 k3

LOS Output Voltage-Low VLOSH 2 VCC+0.3 V

LOS Output Voltage-High VLOSL 0 0.8 V

Output Data Rise/Fall Time tr/ tf120 psec 5

Notes:

1. See Ordering information for detail

2. Internally AC coupled and terminated to 100 Ohm 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. Unfiltered, 20 – 80%.

DELTA ELECTRONICS, INC.

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Optical Characteristics

(VCC=3.135V to 3.465V, Data Rate=4.25Gb/sec, PRBS=27-1 NRZ, 50/125µm MMF)

Parameter Symbol Min. Typ. Max. Unit Note

Transmitter

Output Optical Power (Avg.) PO-9 -3 dBm 1

Optical Modulation Amplitude

@ 4.25 Gb/s

@ 2.125 Gb/s

@ 1.0625 Gb/s

OMA

247

196

156

µW 2

Center Wavelength λ830 860 nm

Spectral Width (RMS) σ0.85 nm

Optical Rise/Fall Time (20% - 80%) tr/ tf90/90 psec 3

Relative Intensity Noise RIN -118 dB/Hz

Output Eye Complies with the ANSI FC-PI Rev. 13 specification, and is class 1

laser eye safety

Receiver

Average Receiver Power Px (MAX) -3 dBm

Sensitivity in OMA

@ 4.25 Gbit/s

@ 2.125 Gb/s

@ 1.062 Gb/s

uW 4

Input Optical Wavelength 830 870 nm

LOS-De-asserted (Avg.) PD-19 dBm

LOS-Asserted (Avg.) PA-30 dBm

LOS-Hysteresis PD-PA0.5 dB

Optical Return Loss ORL 12 dB

Notes:

1. Into multimode fiber, 62.5µm or 50µm diameter.

2. Equivalent extinction ratio specification for Fiber Channel. Allows smaller ER at higher average power.

3. Measured at nominal data rate. These are unfiltered 20%~80% values.

4. The sensitivity is tested at a BER of 1×10-12 or better with an input signal consisting of 27-1 NRZ PRBS.

Mask of the eye diagram for the optical transmit signal

DELTA ELECTRONICS, INC.

4 2008/3/18

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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 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 1&2 or 2&4 Gbit/s 3 Note 4, Open or Low = 1.063Gb/s, High

= 2.125Gb/s or 4.25Gb/s

8 LOS Loss of Signal 3 Note 5

9 VeeR Receiver Ground 1 Note 6

10 VeeR Receiver Ground 1 Note 6

11 VeeR Receiver Ground 1 Note 6

12 RD- Inv. Received Data Out 3 Note 7

13 RD+ Received Data Out 3 Note 8

14 VeeR Receiver Ground 1 Note 6

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 6

18 TD+ Transmit Data In 3 Note 9

19 TD- Inv. Transmit Data In 3 Note 9

20 VeeT Transmitter Ground 1 Note 6

Plug Seq.: Pin engagement sequence during hot plugging.

DELTA ELECTRONICS, INC.

5 2008/3/18

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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) In accordance to SFF Committee SFF-8079 Draft Rev. 1.6.

5) 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.

6) VeeR and VeeT may be internally connected within the SFP module.

7) 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.

8) 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 300 mA. 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 30 mA greater than the

steady state value. VccR and VccT may be internally connected within the SFP transceiver module.

9) 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.

6 2008/3/18

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Recommend Circuit Schematic

Laser Diode

Photo Diode

1uH

0.1uF

10uF

0.1uF

0.01uF

0.1uF

10uF

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

Rate Select Rate Select

30k Ohms

DELTA ELECTRONICS, INC.

7 2008/3/18

Rev. 0A

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Package Outline Drawing for Metal Housing with Bail de-latch

Complies with 21 CFR

1040.10 and 1040.11

Made in x FS

DELTA ELECTRONICS, INC.

8 2008/3/18

Rev. 0A

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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 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.

DELTA ELECTRONICS, INC.

9 2008/3/18

Rev. 0A

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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

(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.

DELTA ELECTRONICS, INC.

10 2008/3/18

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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 PN 86 DC

01 04 44 PN 87 DC

02 07 45 PN 88 DC

03 00 46 PN 89 DC

04 00 47 PN 90 DC

05 00 48 PN 91 DC

06 00 49 PN 92 68

07 40 50 PN 93 F8

08 40 51 PN 94 02

09 0C 52 PN 95 CS2 Note 8

10 15 53 PN 96 00

11 03 54 PN 97 00

12 2B 55 PN 98 00

13 00 56 30 99 00

14 00 57 30 100 00

15 00 58 30 101 00

16 0F Note 1 59 0A 102 00

17 07 Note 2 60 CW Note 4 103 00

18 00 61 CW Note 4 104 00

19 26 62 00 105 00

20 44 D 63 CS1 Note 5 106 00

21 45 E 64 00 107 00

22 4C L 65 3A 108 00

23 54 T 66 00 109 00

24 41 A 67 75 110 00

25 20 68 SN Note 6 111 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 Note3 83 SN 126 00

41 PN 84 DC Note 7 127 00

42 PN 85 DC 128 00 Note9

Notes:

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

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

3) Byte 40-55: Delta part number

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

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

6) Byte 68-83: Serial number.

7) Byte 84-91: Date code.

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

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