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TPP3XGDS0C000E2G Datasheet(PDF) 4 Page - OPLINK Communications Inc.

Part No. TPP3XGDS0C000E2G
Description  850nm SFP Transceiver
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Maker  OPLINK [OPLINK Communications Inc.]
Homepage  http://www.oplink.com
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 4 page
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46335 Landing Pkwy‧Fremont CA 94538-6407‧Tel: 510-933-7200‧Fax: 510-933-7300‧Email: info@oplink.com‧Web: www.oplink.com
Page 4 of 6
S0365. Rev.01. 2012-11-27
TPP3XGDS0x000E2G
850nm SFP+ Transceiver
Electrical Pin Definition
PIN
Logic
Symbol
Name / Description
1
-
VeeT
Module Transmitter Ground
2
LVTTL-O
TX_Fault
Module Transmitter Fault
3
LVTTL-I
TX_Disable
Transmitter Disable; Turns off transmitter laser output
4
LVTTL-I/O
SDA
2-Wire Serial Interface Data Line
5
LVTTL-I/O
SCL
2-Wire Serial Interface Clock
6
-
MOD-ABS
Module Definition, Grounded in the module
7
LVTTL-I
RS0
No function implemented
8
LVTTL-O
RX_LOS
Receiver Loss of Signal Indication
9
LVTTL-I
RS1
No function implemented
10
-
VeeR
Module Receiver Ground
11
-
VeeR
Module Receiver Ground
12
CML-O
RD-
Receiver Inverted Data Output
13
CML-O
RD+
Receiver Non-Inverted Data Output
14
-
VeeR
Module Receiver Ground
15
-
VccR
Module Receiver 3.3V Supply
16
-
VccT
Module Transmitter 3.3V Supply
17
-
VeeT
Module Transmitter Ground
18
CML-I
TD+
Transmitter Non-Inverted Data Input
19
CML-I
TD-
Transmitter Inverted Data Input
20
-
VeeT
Module Transmitter Ground
Application Notes
Electrical interface: All signal interfaces are compliant
with the SFP+ MSA specification. The high speed DATA
interface is differential AC-coupled internally and can be
directly connected to a 3.3V SERDES IC. All low speed
control and sense output signals are open collector TTL
compatible and should be pulled up with a 4.7 k
Ω - 10kΩ
resistor on the host board.
Loss of Signal (LOS): The Loss of Signal circuit monitors
the level of the incoming optical signal and generates logic
HIGH when an insufficient photocurrent is produced.
TX Fault: The output indicates LOW when the transmitter
is operating normally and HIGH with a laser fault including
laser end-of-life. TX Fault is an open collector/drain output
and should be pulled up with a 4.7 k
Ω - 10kΩ resistor on
the host board.
TX Disable: When the TX Disable pin is at logic HIGH, the
transmitter optical output is disabled. The laser is also
disabled if this line is left floating, as it is pulled high inside
the transceiver.
Serial
Identification
and
Monitoring:
The
module
definition of SFP is indicated by the MOD_ABS pin and the
2-wrie serial interface. Upon power up, the 2-wrie interface
appears as NC (no connection), and MOD_ABS is TTL
LOW. When the host system detects this condition, it
activates the serial protocol (standard two-wire I
2C serial
interface) and generates the serial clock signal (SCL). The
positive edge clocks data into the EEPROM segments of
the device that are not write protected, and the negative
edge clocks data from the device. The serial data signal
(SDA) is for serial data transfer. The host uses SDA in
conjunction with SCL to mark the start and end of serial
protocol activation. The supported monitoring functions are
temperature, voltage, bias current, transmitter power,
average receiver signal, all alarms and warnings, and
software monitoring of TX Fault/LOS. The device is
internally calibrated.
The data transfer protocol and the details of the mandatory
and vendor specific data structures are defined in the SFP
MSA, and SFF-8472, Rev. 10.4.
Power supply and grounding: The power supply line
should be well-filtered. All power supply bypass capacitors
should be as close to the transceiver module as possible.




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