Pin

Logic

Symbol

Name/Description

Plug Sequnece

Note

1

GND

Module Ground

1

2

Reserved

No Connect

3

LVTTL-I

Mod_DeSel

Module Deselect; when held LOW allows module to respond to serial interface

3

1

4

LVTTL-O

Interrupt

Indicates presence of an important condition which can be read over the I2C serial interface

3

2

5

LVTTL-I

FLS

Forced  Laser  Shutdown. When pin is asserted  to HIGH, the pump laser is shutdown to eliminate any gain.

3

1

6

Reserved

No connect

2

7

GND

Module Ground

1

8

VCC3

+3.3V Power Supply

2

9

VCC3

+3.3V Power Supply

2

10

LVTTL-I/O

SCL

I2C Serial Interface Clock

3

2

11

LVTTL-I/O

SDA

I2C Serial Interface Data Line

3

2

12

LVTTL-O

Mod_Abs

Indicates module is not present

，Grounded in the module

3

2

13

LVTTL-O

Mod_NR

Module Not Ready。Indicates module operational fault when pin is HIGH。

3

2

14

LVTTL-O

Reserved

Not used。Grounded in module。

3

15

GND

Module Ground

1

16

GND

Module Ground

2

17

CML-O

RD-

This pin  is connected in series with a capacitor（0.1uF） and resistor（51Ω）to GND.

3

18

CML-O

RD+

This pin  is connected in series with a capacitor（0.1uF） and resistor（51Ω）to GND.

2

19

GND

Module Ground

1

20

Reserved

3

21

LVTTL-I

NC

No Connect

3

1

22

Reserved

1

23

GND

Module Ground

1

24

PECL-I

Reserved

Two pins are connected to each other with resistor(100Ω)

3

25

PECL-I

Reserved

3

26

GND

Module Ground

1

27

GND

Module Ground

1

28

CML-I

Reserved

This pin is connected in series with a capacitor(0.1uF) and resistor(51Ω) to GND.

3

29

CML-I

Reserved

This pin is connected in series with a capacitor(0.1uF) and resistor(51Ω) to GND.

3

30

GND

Module Ground

1