FWLF1521P2Nxx SFP Product Specification – Jan 2008
F i n i s a r
I.
Pin Descriptions
Pin
Symbol
Name/Description
Ref.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
VEET
TFAULT
TDIS
Transmitter Ground (Common with Receiver Ground)
Transmitter Fault. Not supported.
Transmitter Disable. Laser output disabled on high or open.
1
2
3
3
3
4
5
1
1
1
MOD_DEF(2) Module Definition 2. Data line for Serial ID.
MOD_DEF(1) Module Definition 1. Clock line for Serial ID.
MOD_DEF(0) Module Definition 0. Grounded within the module.
Rate Select
LOS
No connection required
Loss of Signal indication. Logic 0 indicates normal operation.
Receiver Ground (Common with Transmitter Ground)
Receiver Ground (Common with Transmitter Ground)
Receiver Ground (Common with Transmitter Ground)
Receiver Inverted DATA out. AC Coupled
Receiver Non-inverted DATA out. AC Coupled
Receiver Ground (Common with Transmitter Ground)
Receiver Power Supply
VEER
VEER
VEER
RD-
RD+
VEER
VCCR
VCCT
VEET
1
1
Transmitter Power Supply
Transmitter Ground (Common with Receiver Ground)
Transmitter Non-Inverted DATA in. 100 ohm termination between TD+
and TD-, AC Coupled thereafter.
TD+
19
20
TD-
VEET
Transmitter Inverted DATA in. See TD+
Transmitter Ground (Common with Receiver Ground)
1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS <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. Finisar 2x receiver achieves simultaneous 1x and 2x 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
TD-
20
19
18
17
16
15
14
13
12
11
VeeT
1
2
TXFault
TD+
3
TX Disable
MOD-DEF(2)
MOD-DEF(1)
MOD-DEF(0)
Rate Select
LOS
VeeT
VccT
VccR
VeeR
RD+
RD-
4
5
Towards
Bezel
Towards
ASIC
6
7
8
9
VeeR
VeeR
VeeR
10
Diagram of Host Board Connector Block Pin Numbers and Names
Finisar Corporation Jan 2008 Rev.A Preliminary and Confidential
Page 2
FINISAR [ FINISAR CORPORATION. ]
