Finisar FTLF8528P2BNV User Manual
FTLF8528P2BNV Pluggable SFP+ Product Specification – November 2007
© Finisar Corporation November 21, 2007 Rev. B
Page 2
I.
Pin Descriptions
Pin Symbol
Name/Description
Ref.
1 V
EET
Transmitter Ground (Common with Receiver Ground)
1
2 T
FAULT
Transmitter
Fault.
2
3 T
DIS
Transmitter Disable. Laser output disabled on high or open.
3
4
SDA
2-wire Serial Interface Data Line (MOD-DEF2)
4
5
SCA
2-wire Serial Interface Clock (MOD-DEF1)
4
6
MOD_ABS
Module Absent, connected to V
EET
or V
EER
4
7
RS0
Rx Rate Select:
Open or Low =
High =
2.125 or 4.25 Gb/s Fibre Channel (Low Bandwidth)
8.5 Gb/s Fibre Channel (High Bandwidth)
5
8
LOS
Loss of Signal indication. Logic 0 indicates normal operation.
6
9 RS1
Tx Rate Select:
Open or Low =
Open or Low =
High =
2.125 or 4.25 Gb/s Fibre Channel (Low Bandwidth)
8.5 Gb/s Fibre Channel (High Bandwidth)
5
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. AC Coupled.
19 TD-
Transmitter Inverted DATA in. AC Coupled.
20 V
EET
Transmitter Ground (Common with Receiver Ground)
1
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. T
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.
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. 10.1
3
. 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.
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.