当前位置：搜档网 › datasheet

datasheet

LCP-1250RJ3SR

1 Dec., 2006

Rev. 1.01

RoHS Compliant Copper Small Form-factor Pluggable (SFP)

Transceiver for Gigabit Ethernet

Features

z Compliant with specifications for IEEE 802.3z/Gigabit Ethernet z Hot-pluggable SFP footprint

z 10/100/1000 BASE-T operation in the host systems with SGMII interface z Compliant with industry standard RFT electrical connector and cage z EEPROM with serial ID functionality

z Auto-Negotiation follows IEEE 802.3u Clause 28 (1000BASE-T) and IEEE 802.3z Clause 37 (1000BASE-X) z Access to physical layer IC via 2-wire serial bus z Compact RJ-45 connector assembly

Description The LCP-1250RJ3SR is a 3.3V copper small form-factor pluggable (SFP) transceiver designed

for Gigabit Ethernet over standard category 5 unshielded twisted pair (CAT 5 UTP) and provided with RJ-45 connection. It is also compatible with

industry standard RFT electrical connector and cage.

Through LCP-1250RJ3SR, the 1000BASE-X

fiber Auto-negotiation on the host board side is transparently converted to 1000BASE-T Auto-negotiation on the copper side. The host systems used to work with fiber SFPs will also work with LCP-1250RJ3SR copper SFPs, so there is no need to change MAC software.

The LCP-1250RJ3SR copper SFP also provides with tri-speed mode, 10/100/1000 Mbps operation over 1.25 GHz serial interfaces, as long as the host system supports the SGMII interface with no clocks.

Applications

z Gigabit Ethernet over copper z Switch to switch interface

z Switched backplane applications z File server interface Performance

LCP-1250RJ3SR data link up to 100m on standard CAT 5 UTP

LCP-1250RJ3SR

2 Dec., 2006

Rev. 1.01

Product Selection

Part Number LCP-1250RJ3SR *note 1 LCP-1250RJ3SR-L *note 2 LCP-1250RJ3SR-S *note 3 Link Indicator on RX_LOS Pin

N/A Available N/A Auto-negotiation on MAC side

Enabled by default 1000Base-X

Yes

SGMII

MAC side Interface 1.25Gbps SerDes 1.25Gbps SerDes SGMII without clock

Auto-negotiation on copper side Enabled by default 1000Base-T 1000Base-T 1000Base-T Speed Mode 1000Mbps only

1000Mbps only

10/100/1000Mbps

Notes:

1. This part supports the 1000 Base-T with SerDes interface by default. It can operate in 10/100/1000

Base-T with SGMII interface by reconfiguration of the PHY within the SFP .

2. This part uses the SFP’s Rx-Los pin for link indication and 1000 Base-T auto-negotiation should be

disabling on the host system. It can operate in 10/100/1000 Base-T with SGMII interface by reconfiguration of the PHY within the SFP .

3. This part supports the 10/100/1000 Base-T with SGMII interface by default.

Absolute Maximum Ratings

Parameter Symbol Min. Typ. Max. Unit Note

Storage Temperature Ts ?40 85 oC Supply Voltage V CC 0 5 V

Recommended Operating Conditions

Parameter Symbol Min. Typ. Max. Unit Note Ambient Operating Temperature T A 0 70 oC Supply Voltage V CC 3.135 3.465V

Electrical Characteristics

(T A =0 oC to 70 oC, V CC =3.135V to 3.465V)

Parameter Symbol Min. Typ. Max. Unit Note Supply Current I CC 350 400 mA Transmitter

Transmitter Differential Input Voltage V D,TX 0.5 2.4 V 1 Differential Input Impedance Z TX 80 100 120 Ohm Transmitter Disable Input-High V DISH 2.0 V CC +0.3V Transmitter Disable Input-Low V DISL 0 0.8 V Receiver

Data Output Differential Voltage V D,RX 0.35 2 V 3 Differential Output Impedance Z RX 80 100 120 Ohm Data Output Rise/Fall Time t r,Rx / t f,Rx 180 ps 4

LCP-1250RJ3SR

3 Dec., 2006

Rev. 1.01

Notes:

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

2. Pull up to V CC with a 4.7K – 10K Ohm resistor on host Board.

3. Internally AC coupled, but requires a 100-Ohm differential termination at MAC side.

4. These are unfiltered 20%~80% values.

SFP Transceiver Electrical Pad Layout

LCP-1250RJ3SR

4 Dec., 2006

Rev. 1.01

Pin Function Definitions

Pin Num. Name Function

Plug Seq.Notes

1 VeeT Transmitter Ground 1 Note 5

2 TX Fault Transmitter Fault Indication

3 Note 1 - Function not available

TX Disable

Transmitter Disable

Note 2 - Module disables on high or

open

4 MOD-DEF2 Module Definition 2 3 Note 3 - Two-wire serial ID interface

5 MOD-DEF1 Module Definition 1 3 Note 3 - Two-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 - Function not available

9 VeeR Receiver Ground 1 Note 5 10 VeeR Receiver Ground 1 Note 5 11 VeeR Receiver Ground 1 Note 5 12 RD- Inverse Received Data Out 3 Note 6 13 RD+ Received Data Out 3 Note 6 14 VeeR Receiver Ground 1 Note 5 15 VccR Receiver Power 2 Note 7 - 3.3V ± 5% 16 VccT Transmitter Power 2 Note 7 - 3.3V ± 5% 17 VeeT Transmitter Ground 1 Note 5 18 TD+ Transmitter Data In 3 Note 8 19 TD- Inverse Transmitter Data In 3 Note 8 20 VeeT Transmitter Ground

1 Note 5

Plug Seq.: Pin engagement sequence during hot plugging. Notes:

1) TX Fault is not supported and tied to ground.

2) TX disable is an input that is used to reset the chip of Gigabit Ethernet PHY inside the copper SFP. It is pulled

up within the module with a 4.7 – 10 K ? resistor. Low (0 – 0.8V): Transmitter on (>0.8, < 2.0V):

Undefined

High (2.0 – 3.465V):

Transmitter Disabled

Open: Transmitter Disabled

3) 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. MOD-DEF 0 is grounded in the module to indicate that the module is present. MOD-DEF 1 and MOD-DEF 2 are the clock and data lines of the two-wire serial interface, respectively. 4) LOS (Loss of Signal) is not available and tied to ground. 5) VeeR and VeeT are internally connected within the copper SFP.

6) RD+ and RD- are the received differential outputs, and they are AC-coupled 100? differential lines that should be

terminated with 100? (differential) at user’s SERDES. The AC coupling is done inside the copper SFP and thus not required on the host board. The differential voltage swing will be between 250mV and 625 mV, while properly terminated.

7) VccR and VccT are the receiver and transmitter power supplies, and they are internally connected within the

copper SFP. The power rail is defined as 3.3V ±5% at the SFP connector pin.

LCP-1250RJ3SR

5 Dec., 2006

Rev. 1.01

8) TD+ and TD- are the transmitted differential inputs, and they are terminated with 100? differential load

inside the module. The AC coupling is done inside the module, and thus not required on the host board.

Recommend Circuit Schematic

LCP-1250RJ3SR

6 Dec., 2006

Rev. 1.01

Package Outline Drawing for Metal Housing

LCP-1250RJ3SR

7 Dec., 2006

Rev. 1.01

LCP-1250RJ3SR EEPROM Serial ID Memory Contents (Two-Wire Address A0h)

Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII Address Hex ASCII 00 03 25 20 50 33 3 75 SN 100 00 125 00 01 04 26 20 51 53S 76 SN 101 00 126 00 02 00 27 20 52 52R 77 SN 102 00 127 00 03 00 28 20 53 20 78 SN 103 00 04 00 29 20 54 20 79 SN 104 00 05 00 30 20 55 20 80 SN 105 00 06 08 31 20 56 30 81 SN 106 00 07 00 32 20 57 30 82 SN 107 00 08 00 33 20 58 30 83 SN 108 00 09 00 34 20 59 30 84 DC Note 3109 00 10 00 35 20 60 00 85 DC 110 00 11 01 36 00 61 00 86 DC 111 00 12 0D 37 00 62 00 87 DC 112 00 13 00 38 00 63 CS1Note 188 DC 113 00 14 00 39 00 64 00 89 DC 114 00 15 00 40 4C L 65 01 90 DC 115 00 16 00 41 43 C 66 00 91 DC 116 00 17 00 42 50 P 67 00 92 00 117 00 18 64 43 2D - 68 SN Note 293 00 118 00 19 00 44 31 1 69 SN 94 00 119 00 20 44 D 45 32 2 70 SN 95 CS2Note 4120 00 21 45 E 46 35 5 71 SN 96 00 121 00 22 4C L 47 30 0 72 SN 97 00 122 00 23 54 T 48 52 R 73 SN 98 00 123 00 24 41 A 49 4A J 74 SN 99 00 124 00

Notes:

1) Byte 63: Check sum of bytes 0-62. 2) Byte 68-83 (SN): Serial number. 3) Byte 84-91 (DC): Date code.

4) Byte 95 (CS2): Check sum of bytes 64-94. 5) Byte 128--255 had been set hex. 00.

LCP-1250RJ3SR Internal PHY Register (Two-Wire Address 0xA6)

LCP-1250RJ3SR is internally designed of physical layer IC (Marvell 88E1111), which can be programmed via two-wire interface with the device address 0xA6. For details of PHY IC registers in 88E1111, see Marvell document “Alaska Ultra 88E1111 Integrated Gigabit Ethernet Transceiver”.

Electromagnetic Emission

FCC Class A, CE Class A, VCCI Class A, C-Tick

LCP-1250RJ3SR

8 Dec., 2006

Rev. 1.01

datasheet

相关文档

最新文档