Datasheet
FWLF-1631-xx DWDM SFP – June 2009
F i n i s a r
Finisar Corporation Page 3 June 2009 Rev E2
I. Pin Descriptions
Pin Symbol Name/Description Ref.
1 V
EET
Transmitter Ground (Common with Receiver Ground) 1
2 T
FAULT
Transmitter Fault
3 T
DIS
Transmitter Disable. Laser output disabled on high or open 2
4 MOD_DEF(2) Module Definition 2. Data line for Serial ID 3
5 MOD_DEF(1) Module Definition 1. Clock line for Serial ID 3
6 MOD_DEF(0) Module Definition 0. Grounded within the module 3
7 Rate Select No connection required 4
8 LOS Loss of Signal indication. Logic 0 indicates normal operation 5
9 V
EER
Receiver Ground (Common with Transmitter Ground) 1
10 V
EER
Receiver Ground (Common with Transmitter Ground) 1
11 V
EER
Receiver Ground (Common with Transmitter Ground) 1
12 RD-
Receiver Inverted DATA out. AC Coupled
13 RD+ Receiver Non-inverted DATA out. AC Coupled
14 V
EER
Receiver Ground (Common with Transmitter Ground) 1
15 V
CCR
Receiver Power Supply
16 V
CCT
Transmitter Power Supply
17 V
EET
Transmitter Ground (Common with Receiver Ground) 1
18 TD+ Transmitter Non-Inverted DATA in. 100 ohm termination between TD+
and TD-, AC Coupled thereafter
19 TD-
Transmitter Inverted DATA in. See TD+
20 V
EET
Transmitter Ground (Common with Receiver Ground) 1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. Laser output disabled on T
DIS
>2.0V or open, enabled on T
DIS
<0.8V.
3. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 5.5V.
MOD_DEF(0) pulls line low to indicate module is plugged in.
4. Receiver achieves multi-rate operation without active control.
5. LOS is open collector output. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V
and 5.5V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
VeeT
VeeT
VeeR
VeeR
TD-
TD+
RD+
RD-
VccT
VccR
VeeT
VeeR
TXFault
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
Rate Select
LOS
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Towards
ASIC
Towards
Bezel
TX Disable
VeeR
Diagram of Host Board Connector Block Pin Numbers and Names