FTLX3812M317 Datasheet, PDF (3/12 Pages) Finisar Corporation. – Multiprotocol 10Gb/s DWDM XFP Optical Transceiver

FTLX3812M3xx Amplified DWDM XFP Product Specification – September 2007
Finisar
I. Pin Descriptions
Pin Logic
Symbol
Name/Description
Ref.
1
GND
Module Ground
1
2
VEE5
Optional –5.2 Power Supply – Not required
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
Interrupt
Interrupt (bar); Indicates presence of an important condition 2
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 Power Supply
7
GND
Module Ground
1
8
VCC3 +3.3V Power Supply
9
VCC3 +3.3V Power Supply
10 LVTTL-I
SCL
Serial 2-wire interface clock
2
11 LVTTL-
SDA
Serial 2-wire interface data line
2
I/O
12 LVTTL-O Mod_Abs Module Absent; Indicates module is not present. Grounded 2
in the module.
13 LVTTL-O Mod_NR Module Not Ready; Finisar defines it as a logical OR
2
between RX_LOS and Loss of Lock in TX/RX.
14 LVTTL-O RX_LOS Receiver Loss of Signal indicator
2
15
GND
Module Ground
1
16
GND
Module Ground
1
17 CML-O
RD-
Receiver inverted data output
18 CML-O
RD+
Receiver non-inverted data output
19
GND
Module Ground
1
20
VCC2 +1.8V Power Supply
21 LVTTL-I P_Down/RST Power Down; When high, places the module in the low
power stand-by mode and on the falling edge of P_Down
initiates a module reset
Reset; The falling edge initiates a complete reset of the
module including the 2-wire serial interface, equivalent to a
power cycle.
22
VCC2 +1.8V Power Supply
23
GND
Module Ground
1
24 PECL-I
RefCLK+ Reference Clock non-inverted input, AC coupled on the
host board – Not required
25 PECL-I
RefCLK- Reference Clock inverted input, AC coupled on the host
board – Not required
26
GND
Module Ground
1
27
GND
Module Ground
1
28
CML-I
TD-
Transmitter inverted data input
29
CML-I
TD+
Transmitter non-inverted data input
30
GND
Module Ground
1
Notes:
1. Module circuit ground is isolated from module chassis ground within the module.
2. Open collector; should be pulled up with 4.7k – 10kohms on host board to a voltage between 3.15V
and 3.6V.
© Finisar Corporation 28-September-2007
Rev B1
Page 3