FTLF1328P2BNV Product Specification – October 2008
Finisar
I.
Pin
1
2
3
4
5
6
7
Pin Descriptions
Symbol
V
EET
T
FAULT
T
DIS
SDA
SCA
MOD_ABS
RS0
Name/Description
Transmitter Ground (Common with Receiver Ground)
Transmitter Fault.
Transmitter Disable. Laser output disabled on high or open.
2-wire Serial Interface Data Line (MOD-DEF2)
2-wire Serial Interface Clock (MOD-DEF1)
Module Absent, connected to V
EET
or V
EER
Rx Rate Select:
Open or Low = 2.125 or 4.25 Gb/s Fibre Channel (Low Bandwidth)
High = 8.5 Gb/s Fibre Channel (High Bandwidth)
Loss of Signal indication. Logic 0 indicates normal operation.
Tx Rate Select:
Open or Low = 2.125 or 4.25 Gb/s Fibre Channel (Low Bandwidth)
High = 8.5 Gb/s Fibre Channel (High Bandwidth)
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
Transmitter Power Supply
Transmitter Ground (Common with Receiver Ground)
Transmitter Non-Inverted DATA in. AC Coupled.
Transmitter Inverted DATA in. AC Coupled.
Transmitter Ground (Common with Receiver Ground)
Ref.
1
2
3
4
4
4
5
8
9
LOS
RS1
6
5
10
11
12
13
14
15
16
17
18
19
20
V
EER
V
EER
RD-
RD+
V
EER
V
CCR
V
CCT
V
EET
TD+
TD-
V
EET
1
1
1
1
1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. T
FAULT
is an open collector/drain output, which should be pulled up with a 4.7k – 10k Ohms resistor on
the host board if intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. A high
output indicates a transmitter fault caused by either the TX bias current or the TX output power
exceeding the preset alarm thresholds. A low output indicates normal operation. In the low state, the
output is pulled to <0.8V.
3. Laser output disabled on T
DIS
>2.0V or open, enabled on T
DIS
<0.8V.
4. Should be pulled up with 4.7k – 10kohms on host board to a voltage between 2.0V and 3.6V.
MOD_ABS pulls line low to indicate module is plugged in.
5. Rate select can also be set through the 2-wire bus in accordance with SFF-8472 v. 10.2. Rx Rate
Select is set at Bit 3, Byte 110, Address A2h. Tx Rate Select is set at Bit 3, Byte 118, Address A2h.
Note: writing a “1” selects maximum bandwidth operation. Rate select is the logic OR of the input
state of Rate Select Pin and 2-wire bus.
6. LOS is open collector output. Should be pulled up with 4.7k – 10kohms on host board to a voltage
between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
©
Finisar Corporation October 30, 2008 Rev. A1
Page 2
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