Product Specification
GPON Stick (GPON SFP ONU)
FTGN2117P2xxN
PRODUCT FEATURES
GPON ONU in MSA SFP footprint
Compliance with ITU-T G.984/G.988
Configurable ToD/1PPS output
Configurable Dying Gasp Trigger input
Configurable 1G or 2.5G UNI
Built-in digital diagnostics functions
Low power consumption: < 2W
C-temp and I-temp available
Single fiber bi-directional SC receptacle
Certified for BBF247 Interoperability test
APPLICATIONS
Providing pluggable GPON
ONU interface for Ethernet
switches, routers, DSLAMs,
home gateway and other
customer premises equipment
FTTx and wireless backhaul
Finisar’s GPON Sticks are SFP transceivers with built-in GPON ONU functions. They
comply with ITU-T G.984/G.988 GPON standard. Digital diagnostics functions are
available via the 2-wire serial bus specified in the SFP MSA.
The optical transceiver is compliant per the RoHS Directive 2011/65/EU. See Finisar
Application Note AN-2038 for more details.
Finisar Corporation – October 2015
Rev C1
Page 1
FTGN2117P2xxN Product Specification
I.
Absolute Maximum Ratings
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Power Supply Voltage
Storage Temperature
Vcc-Vee
T
S
-0.2
-40
+3.6
85
V
C
II.
Operating Environment
Symbol
Vcc
T
OP
RH
Min
+3.15
-20
-40
5
Typ
Max
+3.45
70
85
85
Unit
V
C
%
Ref.
FTGN2117P2CxN
FTGN2117P2TxN
Parameter
Power Supply Voltage
Operating Case Temperature
Relative Humidity
(Non-Condensing)
III.
Electrical Characteristics (Top, VCC = 3.15 to 3.45 Volts)
Symbol
Vcc
Icc
R
in
200
2.0
0
370
0
2.0
Min
3.15
Typ
3.3
450
100
1600
Vcc
0.8
1000
0.8
Vcc
mV
V
V
mV
Parameter
Supply Voltage
Supply Current
Transmitter
Input Differential Impedance
Differential Data Input Voltage
Transmit Disable Voltage
Transmit Enable Voltage
Receiver
Differential Data Output Voltage
LOS Low
LOS High
Max
3.45
640
Unit
V
mA
Ref.
Note 1
Note 2
-
-
V
V
IV.
Optical Characteristics (Top, VCC = 3.15 to 3.45 Volts)
Symbol
Min
Typ
Max
-40
Unit
dB
Mb/s
nm
nm
dB
dBm
bits
dBm
dB
Ref.
Parameter
Cross-talk 1310nm Tx to 1490nm Rx
Transmitter
Data Rate (Continuous Wave)
Center Wavelength (CW)
Spectral Width (-20dB)
Side Mode Suppression Ratio
Output Optical Power
Optical Burst on/off Time
Average launch power of OFF
transmitter
Transmitter eye
Optical Extinction Ratio
BR
1290
SMSR
P
OUT
P
OFF
ER
10
30
0.5
1244.16
1330
1
5
16
-39
Note 3
Compliant with ITU-T G.984.2
Finisar Corporation – October 2015
Rev C1
Page 2
FTGN2117P2xxN Product Specification
Receiver
Data Rate
Optical Center Wavelength
Average Rx Sensitivity
Receiver Overload
Receiver reflectance
SD Asserted/Link level
BR
λ
C
R
SENS
P
OVR
-
1480
-8
2488.32
1500
-27
-20
-27
Mb/s
nm
dBm
dBm
dB
dBm
Note 4
Note 4
Notes:
Note 1: Typical current measured under 0.5GBit upstream/0.5GBit downstream with randrom packet size at
ambient 25
C
Note 2: Internally AC coupled;
Note 3:
Measurement is made through a short patch cable;
Note 4:
Measured with FEC off, OLT Tx ER=10dB, at BER≤1×10
-10
;
V.
ToD/1PPS and Dying gasp
Finisar GPON Sticks support ToD/1PPS output. Based on SFP MSA, ToD output share the
PIN2 with TxFault and 1PPS output share the PIN8 with LOS. Either TxFault/LOS or
ToD/1PPS can be selected and two functions are also switchable via software configuration.
Finisar GPON sticks also support Dying gasp with shared PIN7 as input pin which is
defined as Rate Select in MSA. Dying gasp is disabled by default but can be enabled via
software configuration.
Finisar Corporation – October 2015
Rev C1
Page 3
FTGN2117P2xxN Product Specification
VI. Digital Diagnostic Functions
Finisar GPON Stick support the 2-wire serial communication protocol as defined in the SFP
MSA
3
.
Additionally, Finisar GPON Stick (SFP-ONU) provide a unique enhanced digital diagnostic
monitoring interface, which allows real-time access to device operating parameters such as
transceiver temperature, laser bias current, transmitted optical power, received optical power
and transceiver supply voltage. It also defines a sophisticated system of alarm and warning
flags, which alerts end-users when particular operating parameters are outside of a factory-
set normal range.
The SFP MSA defines a 256-byte memory map in EEPROM that is accessible over a
2-wire serial interface at the 8 bit address 1010000X (A0h). The digital diagnostic
monitoring interface makes use of the 8 bit address 1010001X (A2h), A0h stores static
information including product and vendor IDs while A2h contains real-time diagnostic data.
The operating and diagnostics information is monitored and reported by a Digital
Diagnostics Transceiver Controller (DDTC) inside the transceiver, which is accessed
through a 2-wire serial interface. When the serial protocol is activated, the serial clock
signal (SCL) is generated by the host. The positive edge clocks data into the SFP
transceiver into those segments of the EEPROM that are not write-protected. The negative
edge clocks data from the SFP transceiver. The serial data signal (SDA) is bi-directional for
serial data transfer. The host uses SDA in conjunction with SCL to mark the start and end of
serial protocol activation. The memories are organized as a series of 8-bit data words that
can be addressed individually or sequentially.
For more information, please contact Finisar.
Digital diagnostics for the GPON Stick (SFP-ONU) are internally calibrated by default.
Finisar Corporation – October 2015
Rev C1
Page 4
FTGN2117P2xxN Product Specification
VII. Pin Descriptions
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Symbol
VEET
TFAULT/ToD
TDIS
MOD_DEF(2)
(SDA)
MOD_DEF(1)
(SCL)
MOD_DEF(0)
Rate Select/
Dying gasp
LOS/1PPS
VEER
VEER
VEER
RD-
RD+
VEER
VCCR
VCCT
VEET
TD+
TD-
VEET
Name/Description
Transmitter Ground (Common with
Receiver Ground)
Transmitter Fault/Time of Date
Transmitter Disable.
Module Definition 2.
Module Definition 1.
Module Definition 0.
Rate Select/Dying gasp
LOS of Signal/1PPS
Receiver Ground (Common with
Transmitter Ground)
Receiver Ground (Common with
Transmitter Ground)
Receiver Ground (Common with
Transmitter Ground)
Receiver Inverted DATA out.
Receiver Non-inverted DATA out.
Receiver Ground (Common with
Transmitter Ground)
Receiver Power Supply
Transmitter Power Supply
Transmitter Ground (Common with
Receiver Ground)
Transmitter Non-Inverted DATA in.
Transmitter Inverted DATA in.
Transmitter Ground (Common with
Receiver Ground)
Notes
PIN2 can be software configured to ToD, Note 1
Module disables on high or open, Note 2
2 wire serial ID interface, Note 3
2 wire serial ID interface, Note 3
Grounded within the Module, Note 3
PIN 7 can be software configured to
Dying gasp Trigger
PIN 8 can be software configured to 1PPS output
Note 5
Note 5
Note 5
Note 6
Note 6
Note 5
Note 7, 3.3V±5%
Note 7, 3.3V±5%
Note 5
Note 8
Note 8
Note 5
Finisar Corporation – October 2015
Rev C1
Page 5
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