Finisar 10GBASE-LRM X2 User manual

©Finisar Corporation – October 2008 Rev B Page 1
Product Specification
RoHS-6 Compliant
10GBASE-LRM X2 Transponder
FTLX1341E2
PRODUCT FEATURES
Hot pluggable X2 MSA form factor
Total power consumption: 4.0 W maximum
RoHS-6 compliant (lead-free)
Temperature range 0°C to 70°C
Transmission distance up to 220m*
Uncooled 1310 nm directly modulated
Fabry-Perot (FP) laser
Built In Advanced Electronic Dispersion
Compensation (EDC)
SC connector, multimode fiber
Full duplex transmission mode
Digital Optics Monitoring (DOM)
Power supply: +5.0 V, +3.3 V
Adaptable Power Supply (APS: +1.2 V)
XAUI electrical interface
-4 x 3.125 Gb/s Ethernet
Management and control via MDIO
2-wire bus
70-pin connector
Separated signal/chassis ground
Mid Pak module variance for
front panel mounting
De-latch mechanism with low
extraction force
APPLICATIONS
IEEE 802.3aq-2006
10 Gb/s Ethernet transmission on
legacy multimode fiber.
The Finisar FTLX1341E2 transponder incorporates Electronic Dispersion Compensation (EDC)
which provides correction for the severe modal dispersion that may occur during propagation
through links up to 220m on legacy installed FDDI multimode fiber. The EDC device
incorporates a Feed Forward Equalizer (FFE) and a Decision Feedback Equalizer (DFE). The
EDC also contains sophisticated clock recovery architecture for extracting a robust clock from
extremely distorted signals.
PRODUCT SELECTION
FTLX1341E2
* Maximum reach as defined by IEEE. Longer reach possible depending upon link implementation.

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 2
I. Pin Description
Signal Name Level I/O Pin No. Description
Management and Monitoring Ports
MDIO Open Drain
(output)
1.2V CMOS
(input)
I/O 17 Management Data I/O. Requires
external 10 - 22 kΩpull-up to the
APS on host.
MDC 1.2 V
CMOS
I 18 Management Data Clock Input
PRTAD4 1.2 V
CMOS
1 19 Port Address Input bit 4
PRTAD3 1.2 V
CMOS
I 20 Port Address Input bit 3
PRTAD2 1.2 V
CMOS
I 21 Port Address Input bit 2
PRTAD1 1.2 V
CMOS
I 22 Port Address Input bit 1
PRTAD0 1.2 V
CMOS
I 23 Port Address Input bit 0
LASI Open Drain O 9 Link Alarm Status Interrupt Output.
Open Drain Compatible Output with
10 - 20 kΩpull-up on host.
Logic high = Normal Operation
Logic low = Status Flag Triggered
RESET 1.2 V
CMOS
I 10 Reset Input.
Open Drain Compatible Input with
22 kΩpull-up to APS internal to
transponder.
Logic high = Normal Operation
Logic low = RESET
Vendor Specific 11,15,16,24 Vendor Specific Pins.
Leave unconnected when not used.
TX ON/OFF 1.2 V
CMOS
I 12 TX ON/OFF Input.
Open Drain Compatible Input with
22 kΩpull-up to APS internal to
transponder.
Logic high = Transmitter On
Logic low = Transmitter Off
MOD DETECT O 14 Module Detect. Pulled low inside
transponder through a 1 kΩresistor
to Ground
Transmit Functions
Reserved
Reserved
I
I
68
67
Reserved For Future Use
Reserved For Future Use
TX LANE 3–
TX LANE 3+
I
I
65
64
Module XAUI Input Lane 3–
Module XAUI Input Lane 3+
TX LANE 2–
TX LANE 2+
I
I
62
61
Module XAUI Input Lane 2–
Module XAUI Input Lane 2+
TX LANE 1–
TX LANE 1+
I
I
59
58
Module XAUI Input Lane 1–
Module XAUI Input Lane 1+
TX LANE 0–
TX LANE 0+
AC-coupled,
Internally biased
differential
XAUI
I
I
56
55
Module XAUI Input Lane 0–
Module XAUI Input Lane 0+

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 3
Receive Functions
Reserved
Reserved
O
O
38
39
Reserved For Future Use
Reserved For Future Use
RX LANE 0+
RX LANE 0–
O
O
41
42
Module XAUI Output Lane 0+
Module XAUI Output Lane 0–
RX LANE 1+
RX LANE 1–
O
O
44
45
Module XAUI Output Lane 1+
Module XAUI Output Lane 1–
RX LANE 2+
RX LANE 2–
O
O
47
48
Module XAUI Output Lane 2+
Module XAUI Output Lane 2–
RX LANE 3+
RX LANE 3–
AC-coupled,
Internally biased
differential
XAUI
O
O
50
51
Module XAUI Output Lane 3+
Module XAUI Output Lane 3–
DC Power
GND 0 V DC 1, 2, 3, 33, 34,
35, 36, 37, 40,
43, 46, 49, 52,
53, 54, 57, 60,
63, 66, 69, 70
Ground connection for signal ground
on the module
APS +1.2 V 7, 8, 28, 29 Input from Adaptive Power Supply
APS SENSE +1.2 V 27 APS Sense Output. Connected to the
APS input inside transponder.
APS SET 25 Feedback input from APS.
Connected to GND through a 1180Ω
resistor inside the transponder.
3.3 V +3.3 V DC 5, 6, 30, 31 DC Power Input, +3.3 V DC,
Nominal
5.0 V +5.0 V DC 4, 32 DC Power Input, +5.0 V DC,
Nominal
Reserved 26 Reserved for APD.
Reserved 13 Reserved.

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 4
Electrical Pad Layout
Figure 1- X2 Transponder Electrical Pad Layout
II. Absolute Maximum Ratings
Limit Values
Parameter Symbol
min. max. Unit
Storage Temperature1) TS-40 85 °C
Supply Voltage +5.0 V V50 6 V
Supply Voltage +3.3 V V30 4 V
Supply Voltage APS Vaps0 1.5 V
Static Discharge Voltage, All Pins2) STd500 V
Average Receive Optical Power RxPmax 1.5 dBm
Notes:
1) Non-condensing
2) HBM
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device.

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 5
III. Electrical Characteristics
Recommended Operating Conditions Values
Parameter Symbol
min. typ. max.
Unit
Operating Case Temperature1) TC0 70 °C
Transponder Total Power
Consumption P 4 W
Supply Voltage +5.0 V VCC5 4.75 5.0 5.25 V
Supply Current +5.0 V ICC5 10 mA
Supply Voltage +3.3 V VCC3 3.14 3.3 3.47 V
Supply Current +3.3 V ICC3 830 mA
Supply Voltage APS VCC aps 1.152 1.2 1.248 V
Supply Current APS ICC aps 850 mA
1) Measured at reference thermal location, see Figure 3.
See also Environmental Performance.
Electrical DC Characteristics
(VCC5 = 4.75 V to 5.25 V, VCC3 = 3.14 V to 3.47 V, VCC aps = 1.152 V to 1.248 V, TC= 0°C to 70°C)
Values
Parameter Symbol
min. typ. max. Unit
1.2 V CMOS (1.8 V CMOS Compatible1)) I/O DC Characteristics
(PRTAD; LASI; RESET; TX_ONOFF)
External Pull-up Resistor for Open Drain Rpullup 10 22 kΩ
Output High Voltage2) Voh 1 V
Output Low Voltage2) Vol 0.15 V
Input High Voltage Vih 0.84 1.5 V
Input Low Voltage Vil 0.36 V
Input Pull-down Current3) Ipd 20 120 µA
MDIO I/O Characteristics (MDIO; MDC)
MDIO Data Hold Time tHOLD 10 ns
MDIO Data Setup Time tSU 10 ns
Delay from MDC Rising Edge to MDIO
Data Change tDELAY 300 ns
MDC Clock Rate ƒMAX 2.5 MHz
Output Low Voltage5) VOL –0.3 0.2 V
Output Low Current IOL 20 mA
Input High Voltage VIH 0.84 1.2 1.5 V
Input Low Voltage VIL –0.3 0.36 V
Pull-up Supply Voltage VPU 0.84 1.2 1.5 V
Input Capacitance CIN 10 pF
Load Capacitance CLOAD 470 pF
External Pull-up Resistance RLOAD 200 Ω
Power-On Reset AC Characteristics
Power-On Reset and TX_ONOFF
Characteristics
According to XENPAK MSA Issue 3.0 Draft 4.0, 2002-9-9
1) For 1.8 V CMOS Voh = 1.65 V min., Vol = 0.15 V max., Vih = 1.17 V min., Vil = 0.63 V max.
2) Rpull-up = 10 kΩto 1.8 V.
3) Vin = 1.8 V.
4) AC coupled.
5) IOL = 100 µA.

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 6
Electrical AC Characteristics
(VCC5 = 4.75 V to 5.25 V, VCC3 = 3.14 V to 3.47 V, VCC aps = 1.152 V to 1.248 V, TC= 0°C to 70°C)
Values
Parameter Symbol
min. typ. max.
Unit
XAUI Input AC Characteristics (TXLANE[0..3])
Baud Rate
Ethernet RXAUIIN 3.125
Gbit/s
Baud Rate Tolerance RTOLXAUI –100 100 ppm
Differential Input Impedance ZINXAUI 80 100 120 Ω
Differential Return Loss1) |S11| 10 dB
Input Differential Skew2) tSKEWIN 75 ps
Jitter Amplitude Tolerance3) JXAUITOL 0.65 UIp-p
XAUI Output AC Characteristics (RXLANE[0..3])
Baud Rate
Ethernet RXAUIOUT 3.125
Gbit/s
Baud Rate Variation RXAUIVAR –100 100 ppm
XAUI Eye Mask (far-end) According to IEEE 802.3ae
Output Differential Impedance ZOUTXAUI 80 100 120 Ω
Differential Output Return Loss1) |S22| 10 dB
1) 100 MHz to 2.5 GHz.
2) At crossing point.
3) Per IEEE Std 802.3ae.
IV. Optical Characteristics
RMS Spectral Width Mask
Figure 2-Transmitter Maximum RMS Spectral Width

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 7
Optical Specifications
Parameter Symbol Min Typ Max Unit Ref.
Transmitter
Optical Modulation Amplitude (OMA) POMA -4.5 +1.5 dBm
Average Launch Power PAVE -6.5 +0.5 dBm
Peak Launch Power PMAX +3 dBm
Optical Wavelength λ 1260 1355
nm
λrms
@1260nm
2.4 1
λrms @
1260nm-
1300nm
See Figure
2
Spectral Width
λrms @
1300nm-
1355nm
4
nm
Optical Extinction Ratio ER 3.5 dB
Optical Eye Mask Margin 0 % 2
Transmitter Waveform Dispersion
Penalty TWDP 4.7
dB 3
Average Launch Power of OFF
Transmitter POFF -30
dBm
Uncorrelated Jitter [rms] Txj 0.033
UI
Relative Intensity Noise RIN20OMA -128 dB/Hz
<5μm 30
Encircled Flux <11μm 81 %
Tramsmitter Reflectance -12 dB
Receiver
Overload in OMA +1.5 dBm 4
Precursor -6.5
Symmetrical -6.0
Comprehensive Stressed Receiver
Sensitivity (OMA) @ 10.3125Gb/s Postcursor
-6.5
dBm
Optical Center Wavelength λC 1260 1355
nm
Receiver Reflectance Rrx -12 dB
Signal Detect Deassert Level PSDD -14.4 dBm
Signal Detect Assert Level PSDA -25.0 dBm
Signal Detect Hysteresis PSDH 0.5 1.5 dB
Notes:
1) Maximum RMS spectral width as specified by Figure 68-3 in IEEE802.3aq -2006
2) Optical eye mask per IEEE802.3aq -2006.
3) TWDP is calculated using the Matlab code provided in clause 68.6.6.2 of IEEE802.3aq -2006
4) Receiver overload specified in OMA and under the worst comprehensive stressed condition.
V. General Specifications
Optical Interface Standard Specifications
Fiber Type 850nm OFL Bandwidth Symbol Distance
[1] Units
“FDDI” 160MHz/km 220
62.5μm OM1 200MHz/km Lmax 220 m
400MHz/km 100
OM2 500MHz/km 220
50μm
OM3 2000MHz/km
Lmax
220
m
Notes:
1) Operating range as defined by IEEE standards. Longer reach possible depending upon link implementation.

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 8
Environmental Performance
Operating case temperature: 0°C to +70°C
Operating humidity: 0% -95% RH non-condensing
Fibers and Connectors
The transponder has SC receptacles for both Tx and Rx. The transponder is designed for multimode
SC cables, 0° polished endface (PC).
70-pin Connector
The module interface connector is a 70-pin, printed circuit board edge connection with a 0.5 mm
pitch. The appropriate mating connector for the customer PCB is a 70-pin SMT, dual row, right
angled, edge connector, 0.5 mm pitch (Tyco Electronics part number 1367337-1, Molex part number
74441-0003 or equivalent).
Rail Requirement
The X2 rail system required to mount the X2 module is fully defined by the MSA.
(Tyco Electronics part number 1367608-1: designed for belly to belly applications;
and 1367610-1, designed for single sided board mount to fit into the standard host PCB
footprint; or equivalent). For further details please refer to vendor-supplied information.
Aqueous Wash
Finisar X2 transponders are neither solderable nor aqueous washable and are not
intended for these processes.
VI. Regulatory Compliance
Feature Standard Comments
ESD:
Electrostatic Discharge to the
Electrical Pins (HBM)
EIA/JESD22-A114-B
(MIL-STD 883D
Method 3015.7)
Class 1a (> 500 V)
Immunity:
Against Electrostatic Discharge
(ESD) to the Module Receptacle
EN 61000-4-2
IEC 61000-4-2 Discharges ranging from ±2 kV to ±25 kV to the
front end / faceplate / receptacle cause no damage
to module (under recommended conditions).
Immunity:
Against Radio Frequency
Electromagnetic Field
EN 61000-4-3
IEC 61000-4-3
With field strength of 10 V/m, noise frequency
ranges from 10 MHz to 2 GHz. No effect on
module performance between the specification
limits.
Emission:
Electromagnetic Interference
(EMI)
FCC 47 CFR
Part 15, Class B
EN 55022 Class B
CISPR 22
Noise frequency range:
30 MHz to 40 GHz
Radiated emission does not exceed specified
limits when measured with module inside a
shielding enclosure with a MSA conforming
cutout.

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 9
Eye Safety
Finisar FTLX1341E2 transponders are Class 1 Laser Products. They are certified per the following
standards:
Feature Agency Standard Certificate
Number
Laser Eye
Safety FDA/CDRH CDRH 21 CFR 1040 and Laser Notice 50 9210176-77
Laser Eye
Safety TÜV
EN 60825-1: 1994+A11:1996+A2:2001
IEC 60825-1: 1993+A1:1997+A2:2001
IEC 60825-2: 2000, Edition 2
R 72082131
Electrical
Safety TÜV EN 60950 R 72082131
Electrical
Safety UL/CSA CLASS 3862.07 CLASS 3862.87 1439230
Copies of the referenced certificates are available from Finisar Corporation upon request.
VII. DOM Parameters
VIII. Mechanical Specifications
ValuesParameter Symbol
min. typ. max.
Unit
Module Retention Force (latch strength) FRET 200 N
Module Insertion Force FIN 40 N
Module Extraction Force (with kick-out) FEXT-K 16 N
Module Extraction Force (without kick-out) FEXT 25 N
Pull Sleeve front face color is orange.
Values
Parameter min. typ. max. Unit
Transponder Temperature Monitor Accuracy1) -5 +5 °C
Laser Bias Current Monitor Accuracy2) -10 +10 %
Transmit Power Monitor Accuracy3) -3 +3 dB
Receive Power Monitor Accuracy3) -3 +3 dB
1) 0 to 70°C case temperature.
2) 0 to 12.5 mA.
3) -8.2 dBm to +0.5 dBm.

FTLX1341E2 Product Specification – October 2008
©Finisar Corporation – October 2008 Rev B Page 10
Package Outline
Figure 3-X2 Mechanical Dimensions
IX. References
The following references are provided for informational purposes only. The parameters and
operational behavior outlined in this specification describe the complete functionality of the 10G
Transponder. Contact Finisar for any items concerning the operational characteristics of this device.
1. IEEE 802.3ae-2002, August 30, 2002.
2. IEEE Std 802.3aq™-2006
3. X2 MSA Rev 2.0b, January 30, 2003
X. For More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. [phone]
Fax [phone]
[email protected]
www.finisar.com