TPP1XGDS0E000E2G datasheet(4/6 Pages) OPLINK

Il numero della parte	TPP1XGDS0E000E2G

Spiegazioni elettronici	850nm SFP Transceiver

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Produttore elettronici	OPLINK [OPLINK Communications Inc.]

Homepage	http://www.oplink.com

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4 / 6 page

Oplink Communications, Inc

Module Pin Description

Application Notes

Electrical Interface: All signal interfaces are compliant with

the SFP+ MSA specification. The high speed DATA interface

is differential AC-coupled internally and can be directly

connected to a 3.3V SERDES IC. All low speed control and

sense output signals are open collector TTL compatible and

should be pulled up with a 4.7kΩ - 10kΩ resistor on the host

board.

Loss of Signal (LOS): The Loss of Signal circuit monitors the

level of the incoming optical signal and generates logic HIGH

when an insufficient photocurrent is produced.

TX_Fault: The output indicates LOW when the transmitter

is operating normally and HIGH with a laser fault including

laser end-of-life. TX Fault is an open collector/drain output

and should be pulled up with a 4.7kΩ - 10kΩ resistor on the

host board.

TX_Disable: When the TX Disable pin is at logic HIGH,

the transmitter optical output is disabled. The laser is also

disabled if this line is left floating, as it is pulled high inside

the transceiver.

Serial Identification and Monitoring: The module

definition of SFP is indicated by the MOD_ABS pin and the

2-wrie serial interface. Upon power up, the 2-wrie interface

appears as NC (no connection), and MOD_ABS is TTL LOW.

When the host system detects this condition, it activates the

serial protocol (standard two-wire I2C serial interface) and

generates the serial clock signal (SCL). The positive edge

clocks data into the EEPROM segments of the device that

are not write protected, and the negative edge clocks data

from the device. The serial data signal (SDA) is for serial data

transfer. The host uses SDA in conjunction with SCL to mark

the start and end of serial protocol activation.The supported

monitoring functions are temperature, voltage, bias current,

transmitter power, average receiver signal, all alarms and

warnings, and software monitoring of TX Fault/LOS. The

device is internally calibrated.

The data transfer protocol and the details of the mandatory

and vendor specific data structures are defined in the SFP

MSA, and SFF-8472, Rev. 10.4.

Power Supply and Grounding: The power supply line

should be well-filtered. All power supply bypass capacitors

should be as close to the transceiver module as possible.

TPP1XGDS0xG

4

21737-0983. Rev.05. 2011-02-23

Logic

Symbol

Description

1

-

VeeT

Module Transmitter Ground

2

LVTTL-O

TX_Fault

Module Transmitter Fault

3

LVTTL-I

TX_Disable

Transmitter Disable; Turns off transmitter laser output

4

LVTTL-I/O

SDA

2-Wire Serial Interface Data Line

5

LVTTL-I /O

SCL

2-Wire Serial Interface Clock

6

-

MOD-ABS

Module Definition, Grounded in the module

7

LVTTL-I

RS0

No function implemented

8

LVTTL-O

RX_LOS

Receiver Loss of Signal Indication

9

LVTTL-I

RS1

No function implemented

10

-

VeeR

Module Receiver Ground

11

-

VeeR

Module Receiver Ground

12

CML-O

RD-

Receiver Inverted Data Output

13

CML-O

RD+

Receiver Non-Inverted Data Output

14

-

VeeR

Module Receiver Ground

15

-

VccR

Module Receiver 3.3V Supply

16

-

VccT

Module Transmitter 3.3V Supply

17

-

VeeT

Module Transmitter Ground

18

CML-I

TD+

Transmitter Non-Inverted Data Input

19

CML-I

TD-

Transmitter Inverted Data Input

20

-

VeeT

Module Transmitter Ground

1

Module ground pins GND are isolated from the module case

2

Shall be pulled up with 4.7kΩ-10kΩ to a voltage between 3.15V and 3.45V on the host board

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