Multi-rate 10-Gigabit DWDM 80km XFP
Transceiver with Digital Diagnostics
TXD3XGHL2xx
Pb
Product Description
The TXD3XGHL2xx DWDM XFP multi-rate fiber optic transceivers with
digital diagnostics monitoring functionality provide a quick and reliable
interface for 10Gbps DWDM applications. The diagnostic functions, alarm
and warning features as described in the XFP Multi-Source Agreement
(MSA) are provided via standard I
2
C serial interface. The transceivers are
compliant with the XFP Multi-Source Agreement and are designed to
support SONET/SDH, 10G Ethernet, and 10G Fiber Channel data rates from
9.95Gb/s to 11.09Gb/s, and 8.5Gb/s through data rate selection feature.
Each transceiver utilizes an electro-absorption modulator integrated laser
with an operating wavelength in full compliance with 100GHz (0.8nm)
spacing per the ITU-grid. The transceivers satisfy Class I Laser Safety
requirements in accordance with the U.S. FDA/CDRH and international IEC-
60825 standards.
The transceivers connect to standard 30-pad XFP connectors for hot plug
capability. This allows the system designer to make configuration changes
or maintenance by simply plugging in different types of transceivers
without removing the power supply from the host system.
The transmitter and receiver DATA interfaces are AC coupled Current Mode
Logic (CML). LV-TTL Transmitter Disable control input and Loss of Signal
output interfaces are also provided.
The transceivers operate from +1.8V, +3.3V and +5.0V power supplies over
a operating case temperature range of -5°C to +70°C (Commercial), -5°C to
+85°C (Extended), or -40°C to +85°C (Industrial).
Features
Lead Free Design & Fully RoHS Compliant
Compliant with XFP MSA
Compliant with OC-192/STM-64
Compliant with IEEE802.3ae
Compliant with ITU-T G.709
Support 10G Fiber Channel Applications
Digital Diagnostics Monitoring
Temperature-stabilized EML Transmitter
Low Power Consumption
Wide Case Operating Temperature Range
Transmission Distance up to 80km
Absolute Maximum Ratings
Parameter
Storage Temperature
Commercial
Operating Case Temperature
1
Extended
Industrial
Supply Voltage
Operating Relative Humidity
2
Input Voltage
1
2
Symbol
T
ST
T
OP
V
CC
3
V
CC
5
RH
V
IN
Minimum
- 40
-5
-5
- 40
- 0.2
- 0.2
0
0
Maximum
+ 85
+ 70
+ 85
+ 85
+ 3.6
+ 6.0
85
V
CC
Units
°C
°C
V
%
V
Case temperature is measured on top side of XFP module.
Non condensing
S0321. Rev.04. (web) 2014-03-21
TXD3XGHL2xx
Transmitter Performance Characteristics
Parameter
Operating Data Rate
1
Average Optical Output Power (50% duty cycle)
Transmitter OFF Power
Extinction Ratio @ 9.95Gb/s to 10.7Gb/s
Center Wavelength
2
Spectral Width (-20dB)
Side Mode Suppression Ratio
Relative Intensity Noise
Reflectance Tolerance
Jitter Generation
3
(Over Operating Case Temperature Range)
Minimum
9.95
0
-
8.2
-
30
-
-
-
-
Typical
-
-
-
-
See Ordering Information Table
-
-
-
-
-
-
1.0
-
- 130
- 27
0.3
0.1
Maximum
11.09
+ 4.0
- 45.0
-
Units
Gb/s
dBm
dBm
dB
nm
nm
dB
dB/Hz
dB
UI
pp
UI
pp
Symbol
B
P
O
P
OFF
ER
λ
C
Δλ
20
SMSR
RIN
ref
T
20 kHz – 80 MHz
4 MHz – 80 MHz
JG
20K
JG
4M
Optical Output Eye
8.5Gb/s is supported through Data Rate Selection feature.
BOL: +/-0.05nm from ITU grid. EOL: +/-0.1nm from ITU grid.
3
Jitter generation is compliant with GR-253 and G.8251.
1
2
Compliant with GR253-CORE, IEEE 803.3ae , and ITU-T G.959
Receiver Performance Characteristics
(Over Operating Case Temperature Range)
Parameter
Operating Data Rate
1
Wavelength of Operation
Receiver Sensitivity
Receiver Sensitivity with
80km fiber
@ 9.95Gb/s (10
-12
BER)
@ 11.09Gb/s (10
-4
BER)
@ 9.95Gb/s (10
-12
BER)
@ 11.09Gb/s (10
-4
BER)
Symbol
B
λ
P
min_BB
P
min_Fiber
P
MAX
P
los+
P
los-
-
-
Minimum
9.95
1260
-
-
-
-
- 7.0
-
- 38.0
0.5
-
Typical
-
-
-
-
-
-
-
-
-
-
-
Maximum
11.09
1570
- 24.0
- 27.0
- 21.5
- 24.0
-
- 27.0
-
-
- 27
Units
Gb/s
nm
dBm
dBm
dBm
dBm
dB
dB
Maximum Input Power
(10
-12
BER)
LOS Thresholds
LOS Hysteresis
Receiver Reflectance
1
Increasing Light Input
Decreasing Light Input
8.5Gb/s is supported through Data Rate Selection feature.
Laser Safety:
All transceivers are Class 1 Laser products
per FDA/CDRH and IEC-60825 standards. They must be
operated under specified operating conditions.
Oplink Communications, Inc.
This product complies with
21 CFR 1040.10 and 1040.11
Meets Class 1 Laser Safety Requirements
Oplink Communications, Inc
2
S0321. Rev.04. (web) 2014-03-21
TXD3XGHL2xx
Electrical Interface
(Over Operating Case Temperature Range)
Parameter
Differential Impedance
Differential Input Voltage Swing
Differential Output Voltage Swing
Output Rise/Fall Time (20 to 80%)
TX_Dis, P_Down/RST
XFP Interrupt, Mod_NR, RX_LOS
Symbol
Z
d
V
pp, diff_in
V
pp, diff_out
T
r
/T
f
V
IL
V
IH
V
OL
V
OH
Minimum
-
120
340
24
- 0.3
2.0
0
host_V
CC
- 0.5
Typical
100
-
550
-
-
-
-
-
Maximum
-
820
850
-
0.8
V
CC
+ 0.3
0.4
host_V
CC
+ 0.3
Units
Ω
mV
mV
ps
V
V
Electrical Power Supply Characteristics
(Over Operating Case Temperature Range)
Parameter
Supply Voltage
Supply Current
Power Dissipation
P_Down Power Dissipation
Symbol
V
CC
3
V
CC
5
I
CC
3
I
CC
5
PW
PDW
Minimum
3.13
4.75
-
-
-
-
Typical
3.3
5.0
-
-
-
-
Maximum
3.47
5.25
750
500
3.5
1.5
Units
V
mA
W
W
XFP Transceiver Electrical Pad Layout
1
2
3
4
5
6
7
8
9
GND
VEE5
Mod_DeSel
Interrupt
TX_Dis
VCC5
GND
VCC3
VCC3
Host Board Connector Pad Layout
1
2
3
4
5
6
7
Toward
Bezel
8
9
10
11
12
13
14
15
GND
V
EE
30
GND
29
TD+
28
TD-
27
GND
26
GND
25
RefCLK-
24
RefCLK+
23
GND
22
VCC2
21
TP_Down/RS
20
VCC2
19
GND
18
RD+
17
RD-
16
GND
Top of XFP Board
GND
TD+
TD-
GND
GND
RefCLK-
RefCLK+
GND
Vcc2
P_Down/RST
Vcc2
GND
RD+
RD-
GND
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Toward
ASIC
5
Mod_DeSel
Interrupt
TX_Dis
Vcc5
GND
Vcc3
Vcc3
SCL
SDA
Mod_Abs
Mod_NR
RX_LOS
GND
10
SCL
11
SDA
12
Mod_Abs
13
Mod_NR
14
RX_LOS
15
GND
Bottom of XFP Board
(as viewed thru top of board)
Oplink Communications, Inc
3
S0321. Rev.04. (web) 2014-03-21
TXD3XGHL2xx
Module Pin Description
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Logic
-
-
LVTTL-I
LVTTL-O
LVTTL-I
-
-
-
-
LVTTL-I/O
LVTTL-I/O
LVTTL-O
LVTTL-O
LVTTL-O
-
-
CML-O
CML-O
-
-
LVTTL-I
-
-
PECL-I
PECL-I
-
-
CML-I
CML-I
-
Symbol
GND
V
EE
5
Mod_DeSel
Interrupt
TX_Dis
V
CC
5
GND
V
CC
3
V
CC
3
SCL
SDA
Mod_Abs
Mod_NR
RX_LOS
GND
GND
RD-
RD+
GND
V
CC
2
P_Down/RST
V
CC
2
GND
RefCLK+
RefCLK-
GND
GND
TD-
TD+
GND
Description
Module Ground
Optional -5.2V Power Supply (Not Required)
Module De-select; When held low allows module to respond to 2-wire serial interface
Interrupt; Indicates presence of an important condition which can be read over the 2-wire serial
Interface
Transmitter Disable; Turns off transmitter laser output
+5V Power Supply
Module Ground
+3.3V Power Supply
+3.3V Power Supply
2-Wire Serial Interface Clock
2-Wire Serial Interface Data Line
Indicates Module is not present. Grounded in the Module
Module Not Ready; Indicating Module Operational Fault
Receiver Loss Of Signal Indicator
Module Ground
Module Ground
Receiver Inverted Data Output
Receiver Non-Inverted Data Output
Module Ground
Not Used
Power down; When high, requires the module to limit power consumption to 1.5W or below. 2-Wire
serial interface must be functional in the low power mode.
Reset; The falling edge initiates a complete reset of the module including the 2-wire serial interface,
equivalent to a power cycle.
Not Used
Module Ground
Reference Clock Non-Inverted Input (Not Required)
Reference Clock Inverted Input (Not Required)
Module Ground
Module Ground
Transmitter Inverted Data Input
Transmitter Non-Inverted Data Input
Module Ground
Data Rate Selection
The transceivers support data rates 8.5Gb/s and 9.95-11.09Gb/s. The data rate selection between 8.5Gb/s and 9.95-11.09Gb/s can be set by A0H
byte 60 bit 0.
Rate Select Setting
A0H byte 60 bit 0
1
0
Rate
8.5Gb/s
9.95Gb/s to 11.09Gb/s
Factory default setting = 0; can be customized upon request.
Oplink Communications, Inc
4
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TXD3XGHL2xx
Host Board Termination & Coupling
TD+
CML
INPUTS
50Ω line
50Ω line
50Ω line
50Ω line
ASIC/
SerDes
+3.3V
+3.3V
R
+3.3V
R
TD-
RD+
+3.3V
1µH coil or
ferrite inductor
0.1
1µH coil or
ferrite inductor
0.1
+
+
CML
OUTPUTS
10
0.1
8, 9
RD-
XFP
+5.0V
10
0.1
6
SCL, SDA,
Mod_Abs, Mod_NR,
Interrupt, RX_LOS
R
R: 4.7 to 10kΩ
All caps are in units of µF
Application Notes
Electrical Interface:
All signal interfaces are compliant with
the XFP MSA specification. The high speed DATA interface is
differential AC-coupled internally and can be directly connected
to a 3.3V SERDES IC.
RX_LOS:
The Loss of Signal circuit monitors the level of the
incoming optical signal and generates a logic HIGH when an
insufficient photocurrent is produced.
TX_Dis:
When the TX Disable pin is at logic HIGH, the transmitter
optical output is disabled. (less than -45dBm).
P_Down:
The Power Down Function pin, when held High by
the host, places the module in the standby (Low Power) mode
with a maximum power dissipation of 1.5W. This protects hosts
which are not capable of cooling higher power modules which
may be accidentally inserted. The module’s 2-wire serial interface
and all laser safety functions must be fully functional in this low
power mode. During P_Down, the module shall still support the
completion of reset Interrupt, as well as maintain functionality
of the variable power supply.
Mod_NR:
The Mod_NR is an output pin that when High, indicates
that the module has detected a condition that renders transmitter
and or receiver data invalid, shall consist of logical OR of the
following signals:
• Transmit Signal Conditioner Loss of Lock
• Transmitter Laser Fault
• Receiver Signal Conditioner Loss of Lock
Other conditions deemed valuable to the detection of fault may
be added to the Mod_NR. The Mod_NR output pin is an open
collector and must be pulled to Host_Vcc on the host board.
P_Down/RST:
The negative edge of Reset Function signal
initiates a complete module reset.
Module Behavior During P_Down and RST:
During execution
of a reset (t_init) or while held in Power Down mode, a module
may be unable to determine the correct value for Mod_NR and
RX_LOS. These outputs as well as all interrupt related flags,
except completion of Reset flag, shall be disregarded by the
host. When the module completes a Reset and is not in Power
Down mode, the module must represent the correct value of
both signals on its outputs before posting a completion of reset
interrupt to the host.
At no time shall a module cause spurious assertion of the
Interrupt pin. When a host initially applies power to a module
with the P_Down/RST signal asserted, a module comes up in
power down mode. The module shall only assert the Interrupt
signal pin to inform the host it has completed a reset. The
completion of reset flag shall be the only interrupt source flag
set during power down mode. The host is expected to clear this
interrupt before releasing the module from the power down
mode. The transition from power down mode to normal mode
will trigger a reset of the module and result in a 2nd module reset
and a 2nd reset completion interrupt to the host.
Power Supply and Grounding:
The power supply line should
be well-filtered. All 0.1μF power supply bypass capacitors should
be as close to the transceiver module as possible.
Oplink Communications, Inc
5
S0321. Rev.04. (web) 2014-03-21
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