FWDM-1629-XX DWDM SFP Preliminary Product Specification – February 2005
F i n i s a r
Finisar Corporation
PRELIMINARY and Confidential
Page 3
Rev C, February 2005
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.
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
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
