7
ROHS COMPLIANT XFP OPTICAL TRANSCEIVER – 850NM
FOR UP TO 300M REACH
Pin Number
Symbol
Name
Description
1
GND1
Module Ground
2
VEE5
Not Used; may be left unconnected (Optional -5.2 V Power Supply)
3
LVTTL-I
Mod_Desel
Module De-select; When held low allows the module to respond to
2-wire serial interface commands
4
LVTTL-O
Interrupt2
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 (not used)
7
GND1
Module Ground
8
VCC3
+3.3 V Power Supply
9
VCC3
+3.3 V Power Supply
10
LVTTL-I
SCL2
Two Wire Interface Clock
11
LVTTL-I/O
SDA2
Two Wire Interface Data Line
12
LVTTL-O
Mod_Abs2
Indicates Module is not present. Grounded in the Module
13
LVTTL-O
Mod_NR2
Module Not Ready; Indicating Module Operational Fault
14
LVTTL-O
RX_LOS2
Receiver Loss Of Signal Indicator
15
GND1
Module Ground
16
GND1
Module Ground
17
CML-O
RD-
Receiver Inverted Data Output
18
CML-O
RD+
Receiver Non-Inverted Data Output
19
GND1
Module Ground
20
VCC2
+1.8 V Power Supply.
21
LVTTL-I
P_Down/RST
Power down; When high, the module limits power consumption to
1.5 W or below. Serial interface is functional in the low power mode.
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
23
GND1
Module Ground
24
PECL-I
RefCLK+
Reference Clock Non-Inverted Input, AC coupled on the host board
25
PECL-I
RefCLK-
Reference Clock Inverted Input, AC coupled on the host board
26
GND1
Module Ground
27
GND1
Module Ground
28
CML-I
TD-
Transmitter Inverted Data Input
29
CML-I
TD+
Transmitter Non-Inverted Data Input
30
GND1
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 k
Ω – 10 kΩ to a voltage between 3.15 V and 3.45 V on the host board
Table 1 XFP optical transceiver pin descriptions