7

MUlTIPROTOCOl XFP OPTICAl TRANSCEIvER

—1550 NM FOR UP TO 40 KM REACH

Pin Number

Type

Name

Description

1

Module Ground

2

VEE5

Not used; may be left unconnected (Optional -5.2 V Power Supply)

3

LVTTL-I

Mod_Desel

ModuleDe-select;Whenheldlowallowsthemoduleto

respond to 2-wire serial interface commands

4

LVTTL-O

Interrupt; Indicates presence of an important condition which

can be read over the serial 2-wire interface

5

LVTTL-I

TX_DIS

Transmitter Disable; Transmitter Laser Source Turned Off

6

VCC5

+5 V Power Supply

7

Module Ground

8

VCC3

+3.3 V Power Supply

9

VCC3

+3.3 V Power Supply

10

LVTTL-I

Two-wire Interface Clock

11

LVTTL-I/O

Two-wire Interface Data Line

12

LVTTL-O

Indicates Module is not present. Grounded in the Module

13

LVTTL-O

Module Not Ready; Indicating Module Operational Fault

14

LVTTL-O

Receiver Loss Of Signal Indicator

15

Module Ground

16

Module Ground

17

CML-O

RD-

Receiver Inverted Data Output

18

CML-O

RD+

Receiver Noninverted Data Output

19

Module Ground

20

VCC2

+1.8 V Power Supply (not used)

21

LVTTL-I

P_Down/RST

Powerdown;Whenhigh,themodulelimitspowerconsumption

to1.5Worbelow.Serialinterfaceisfunctionalinthelowpowermode.

Reset; The falling edge initiates a complete reset of the module

including the serial interface, equivalent to a power cycle.

22

VCC2

+1.8 V Power Supply (not used)

23

Module Ground

24

PECL-I

RefCLK+

Reference Clock Noninverted Input (not used)

25

PECL-I

RefCLK-

Reference Clock Inverted Input (not used)

26

Module Ground

27

Module Ground

28

CML-I

TD-

Transmitter Inverted Data Input

29

CML-I

TD+

Transmitter Non-inverted Data Input

30

Module Ground

1. Module ground pins (GND) are isolated from the module case and chassis ground within the module

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

Table 1 XFP Optical Transceiver Pin Descriptions