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TXN221200000000

型号：

TXN221200000000

品牌：

EMCORE[ EMCORE CORPORATION ]

页数：

28 页

PDF大小：

457 K

下载PDF手册
Intel® TXN22120 Gigabit Ethernet  
1310 nm Optical Transceiver  
Compliant with SFP* MSA  
Datasheet  
The LC Small-Form Factor Pluggable (SFP) optical transceivers are high-performance integrated  
modules for bi-directional communication over single-mode optical fiber.  
The Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver (called hereafter the TXN22120  
Optical Transceiver) is specifically designed for high-speed Gigabit Ethernet operation. The TXN22120  
Optical Transceiver is provided with an LC receptacle that is compatible with the industry-standard LC  
connector.  
The TXN22120 Optical Transceiver is Class 1 laser safety compliant with FDA Radiation Performance  
Standards, 21 CFR 1040.10, and international standards IEC 60825-1 and IEC 60825-2.  
Applications  
„ Gigabit Ethernet Stackable Switches  
„ Gigabit Ethernet Enterprise  
Switches  
Product Features  
„ Compliant with IEEE 802.3z* Ethernet  
„ TTL Loss of Signal (LOS) Output  
„ Transmitter Disable Input  
„ AC-coupled CML Level Input/Output  
„ Single +3.3V Power Supply  
„ Class 1 Laser Safety Product  
„ IEC/UL 60950-1 Safety Certified  
Standard  
„ 1.25 Gbps Ethernet performance  
„ Compliant with the SFP Multi-Source  
Agreement (MSA) Specification  
„ Hot pluggable  
„ 1310 nm FP laser-based emitter  
„ Designed and verified as RoHS  
compliant  
„ China RoHS compliant with 30-year  
EFUP  
Order Number: 304463, Revision: 005US  
18-April-2007  
Legal Lines and Disclaimers  
INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR  
OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS  
OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING  
TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE,  
MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.  
Intel products are not intended for use in medical, life saving, life sustaining, critical control or safety systems, or in nuclear facility applications.  
Intel may make changes to specifications and product descriptions at any time, without notice.  
Intel Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property rights that relate to the  
presented subject matter. The furnishing of documents and other materials and information does not provide any license, express or implied, by estoppel  
or otherwise, to any such patents, trademarks, copyrights, or other intellectual property rights.  
The Intel® TXN22120 Gigabit Ethernet Optical Transceiver may contain design defects or errors known as errata which may cause the product to deviate  
from published specifications. Current characterized errata are available on request.  
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.  
Copies of documents which have an order number and are referenced in this document, or other Intel literature may be obtained by calling  
1-800-548-4725 or by visiting Intel's website at http://www.intel.com.  
Intel and the Intel logo are trademarks of Intel Corporation in the U.S. and other countries.  
*Other names and brands may be claimed as the property of others.  
Copyright © 2005-2007, Intel Corporation. All Rights Reserved.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
2
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Contents  
1.0 Introduction..............................................................................................................8  
2.0 Specifications and Characteristics .............................................................................9  
2.1  
2.2  
2.3  
Maximum Ratings and Recommended Operating Conditions ......................................9  
Electrical Characteristics..................................................................................... 10  
Optical Specifications......................................................................................... 12  
3.0 Electrical Interface.................................................................................................. 14  
4.0 Termination............................................................................................................. 16  
4.1  
4.2  
Types of I/O Interfaces ...................................................................................... 16  
CML Termination............................................................................................... 16  
5.0 SFP Timing Parameters ........................................................................................... 18  
6.0 Mechanical Specification.......................................................................................... 19  
7.0 Regulatory Compliance............................................................................................ 20  
7.1  
7.2  
7.3  
7.4  
7.5  
Electromagnetic Compatibility Compliance ............................................................ 20  
Safety Compliance............................................................................................. 21  
Lead-Free Conformance ..................................................................................... 22  
Compliance with Restriction of Hazardous Substances ............................................ 23  
Management Methods on Control of Pollution from Electronic Information Products  
(a.k.a. China RoHS)........................................................................................... 24  
Product Certification Markings and Compliance Statements ..................................... 25  
7.6  
8.0 Ordering Information .............................................................................................. 26  
9.0 Acronyms ................................................................................................................ 27  
Figures  
1
2
3
4
Electrical Interface Pin Numbers and Names ................................................................ 14  
Circuit Diagram for CML Termination on Receiver Output............................................... 16  
Circuit Diagram for CML Termination on Transmitter Input............................................. 17  
SFP Mechanical Specifications.................................................................................... 19  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
3
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Tables  
1
2
3
4
5
6
7
8
9
Absolute Maximum Ratings......................................................................................... 9  
Recommended Operating Conditions............................................................................ 9  
Electrical Characteristics – Power and Current ..............................................................10  
Electrical Characteristics – Transmitter........................................................................10  
Electrical Characteristics – Receiver ............................................................................11  
Fiber Length Specifications ........................................................................................12  
Optical Specifications – Transmitter ............................................................................12  
Optical Specifications – Receiver.................................................................................13  
Plug Sequence: Pin Engagement Sequence During Hot Plugging .....................................14  
10 Timing Parameters for SFP Management......................................................................18  
11 Regulatory Compatibility Compliance...........................................................................20  
12 Safety Compliance....................................................................................................21  
13 Lead-Free 2nd-Level Interconnect Markings ..................................................................22  
14 Hazardous Substances Table......................................................................................24  
15 Product Certification Markings and Compliance Statements ............................................25  
16 Ordering Information ................................................................................................26  
17 Acronyms................................................................................................................27  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
4
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Revision History  
Revision History – Intel® TXN22120 Gigabit Ethernet Optical Transceiver (Sheet 1 of 3)  
Date  
Revision  
Description  
Changes for datasheet for Intel® TXN22120 Gigabit Ethernet 1310 nm Optical  
Transceiver  
•
•
Table 1, “Absolute Maximum Ratings” on page 9 - Text changed  
Table 3, “Electrical Characteristics – Power and Current” on page 10 - Table  
update  
•
•
•
Table 5, “Electrical Characteristics – Receiver” on page 11 - Text changed  
Table 6, “Fiber Length Specifications” on page 12 - Text changed  
Table 7, “Optical Specifications – Transmitter” on page 12 -update to remove  
FC OMA spec  
•
•
Table 8, “Optical Specifications – Receiver” on page 13 - Text changed  
Table 9, “Plug Sequence: Pin Engagement Sequence During Hot Plugging” on  
page 14 - Table text and table footnotes changed  
•
•
Section 4.0, “Termination” on page 16 - Text changed throughout section  
Figure 2, “Circuit Diagram for CML Termination on Receiver Output” on  
page 16 - Figure changed  
18 April 2007 005  
•
•
Figure 3, “Circuit Diagram for CML Termination on Transmitter Input” on  
page 17 - Figure changed  
Section 7.0, “Regulatory Compliance” on page 20 - Text changed throughout  
section  
•
•
•
Table 11, “Regulatory Compatibilty Compliance” on page 20 - Text changed  
Section 7.2, “Safety Compliance” on page 21 - Text changed  
Section 7.4, “Compliance with Restriction of Hazardous Substances” on  
page 23 - Text changed  
•
•
Section 7.4, “Compliance with Restriction of Hazardous Substances” on  
page 23 - New text  
Section 7.5, “Management Methods on Control of Pollution from Electronic  
Information Products (a.k.a. China RoHS)” on page 24 - New section with  
China RoHS information added  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
5
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Revision History – Intel® TXN22120 Gigabit Ethernet Optical Transceiver (Sheet 2 of 3)  
Date  
Revision  
Description  
Changes for datasheet for Intel® TXN22120 Gigabit Ethernet 1310 nm Optical  
Transceiver  
Removed iSCSI Host Bus Adapter from Application on page 1  
Removed Optional digital diagnostics feature available, from Product Features on  
page 1  
Updated Table 3, “Electrical Characteristics – Power and Current” on page 10  
•
Notes: -20° C < T < 85°C  
c
Modified Section 2.1, “Specifications - Electrical” on page 9  
Added description to section 1.1  
Updated Table 5, “Electrical Characteristics – Receiver” on page 11  
•
•
Added jitter P-P measurement note to Table 5, “Electrical Characteristics –  
Receiver” on page 11  
•
Added Deterministic Jitter to Table 5, “Electrical Characteristics – Receiver” on  
page 11  
Updated Table 7, “Optical Specifications – Transmitter” on page 12  
•
•
•
Optical Transmit Power  
Deterministic Jitter  
Total Jitter  
18 Jan 2006  
004  
Updated Table 8, “Optical Specifications – Receiver” on page 13  
•
•
•
•
•
•
•
Receiver Sensitivity  
Stressed Sensitivity  
Optical Return Loss  
LOS - Asserted  
LOS - De-asserted  
LOS - Hysteresis  
Removed Dj parameters from Table 8, “Optical Specifications – Receiver” on  
page 13  
•
Removed TJ parameters from Table 8, “Optical Specifications – Receiver” on  
page 13  
Removed Section 5.4  
Updated Figure 4, “SFP Mechanical Specifications” on page 19  
Added Section 7.4, “Compliance with Restriction of Hazardous Substances” on  
page 23  
Updated Table 16, “Ordering Information” on page 26.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
6
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Revision History – Intel® TXN22120 Gigabit Ethernet Optical Transceiver (Sheet 3 of 3)  
Date  
Revision  
Description  
Changes for datasheet for Intel® TXN22120 Gigabit Ethernet 1310 nm Optical  
Transceiver  
Updated Table 2, “Recommended Operating Conditions” on page 9  
•
•
Case temperature  
Module supply voltage  
Updated Table 5, “Electrical Characteristics – Receiver” on page 11  
CML Output rise/fall time  
Updated Table 6, “Fiber Length Specifications” on page 12  
9 µm/125 µm SMF  
Updated Table 7, “Optical Specifications – Transmitter” on page 12  
•
•
•
•
•
•
•
•
•
Optical Transmit Power  
Spectral Width  
Optical Modulation Amplitude  
Extinction ratio  
Total Jitter  
Output Rise/Fall Time  
Added TX Disable parameter  
25 Apr 2005  
003  
Updated Table 8, “Optical Specifications – Receiver” on page 13  
•
•
•
•
•
•
•
Optical Input Wavelength  
Receiver Sensitivity  
Total jitter  
Receiver Overload  
LOS - Asserted  
LOS - De-asserted  
LOS - Hysteresis  
Modified Section 6.0, “Mechanical Specification” on page 19: Added Note  
“Aqueous wash is not applicable for this product.”  
Updated Table 11, “Regulatory Compatibilty Compliance” on page 20  
Changes for datasheet for Intel® TXN22120 Gigabit Ethernet 1310 nm Optical  
Transceiver  
Modified Title Page: Changed title.  
Modified Table 6, “Fiber Length Specifications” on page 12: Removed the note  
BER < 1.0E-12 @ 1.0625 Gbps.  
Modified Table 7, “Optical Specifications – Transmitter” on page 12:  
•
•
Added Deterministic Jitter row  
Changed max for Total Jitter  
22 Feb 2005  
002  
Modified Table 8, “Optical Specifications – Receiver” on page 13:  
•
•
•
•
Added Stressed Sensitivity row  
Added Deterministic Jitter row  
Added Total Jitter row  
Removed “1.0625 and” from note  
Modified Table 9, “Plug Sequence: Pin Engagement Sequence During Hot  
Plugging” on page 14 (Note 4 of Rate Select for 1.25 Gbps only).  
Modified Table 16, “Ordering Information” on page 26.  
Initial release of datasheet for Intel® TXN22120 Gigabit Ethernet 1310 nm Optical  
Transceiver  
08 Oct 2004  
001  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
7
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
1.0  
Introduction  
The Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver (called hereafter  
the TXN22120 Optical Transceiver) is specifically designed for high-speed Gigabit  
Ethernet operation.  
This document discusses the following topics:  
• Section 2.0, “Specifications and Characteristics” on page 9  
• Section 3.0, “Electrical Interface” on page 14  
• Section 4.0, “Termination” on page 16  
• Section 5.0, “SFP Timing Parameters” on page 18  
• Section 6.0, “Mechanical Specification” on page 19  
• Section 7.0, “Regulatory Compliance” on page 20  
• Section 8.0, “Ordering Information” on page 26  
• Section 9.0, “Acronyms” on page 27  
For information on standards that apply to the TXN22120 Optical Transceiver, see the  
following references:  
• “Digital Diagnostics Monitoring Interface for Optical Transceivers”. SFF Document  
Number SFF-8472, Revision 9.3.  
• IEEE Standard 802.3, 2002 Edition, Clause 38, PMD Type 1000BASE-LX. IEEE  
Standards Department, 2002  
• Small Form-factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA)  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
8
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
2.0  
Specifications and Characteristics  
Specifications and characteristics include the following:  
• Section 2.1, “Maximum Ratings and Recommended Operating Conditions” on  
page 9  
• Section 2.2, “Electrical Characteristics” on page 10  
• Section 2.3, “Optical Specifications” on page 12  
2.1  
Maximum Ratings and Recommended Operating  
Conditions  
Table 1 lists the absolute maximum ratings for the TXN22120 Optical Transceiver.  
Table 1. Absolute Maximum Ratings  
Parameter  
Symbol  
Min.  
Max.  
Units  
Notes  
Storage Temperature  
Relative Humidity  
T
-40  
5
85  
85  
4
°C  
%
V
–
s
R
–
H
Module Supply Voltage  
Data AC Voltage  
V T, R  
cc  
-0.5  
–
–
Differential  
–
TD+, TD-  
2.6  
V
pp  
Control Input Voltage  
V
-0.5  
V +0.3  
V
i
cc  
Caution:  
Exceeding these values may cause permanent damage. Functional  
operation under these conditions is not implied.  
Table 2 lists the recommended operating conditions. (Minimum and maximum values  
listed in Table 3 through Table 8 apply over the recommended operating conditions  
specified in Table 2.)  
Table 2. Recommended Operating Conditions  
Parameter  
Case Temperature  
Symbol  
Min.  
Typ.  
Max.  
Units  
Notes  
T
-20  
3.0  
–
3.3  
–
85  
°C  
–
–
–
c
Module Supply Voltage  
Data Rate  
V T, R  
cc  
3.63  
1.25  
VDC  
Gbps  
–
1.0625  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
9
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
2.2  
Electrical Characteristics  
The minimum and maximum values in this section apply over the following  
recommended temperature and voltage range (from Table 2, “Recommended Operating  
Conditions” on page 9).  
-20 °C < Tc < 85 °C, 3.0 V < Vcc < 3.6 V  
Table 3 lists the TXN22120 Optical Transceiver electrical characteristics for power anad  
current.  
Table 3. Electrical Characteristics – Power and Current  
Parameter  
Symbol  
Min.  
Typ.  
Max.  
Units  
Notes  
T = 25°C, V = 3.3 V  
–
220  
mA  
c
cc  
Supply Current  
l
–
cc  
-20° C < T < 85°C,  
c
–
240  
mA  
2.97 V < V < 3.63 V  
cc  
10 kHz to 4 MHz  
with supply filter  
Supply Noise Rejection  
Inrush Current  
–
–
100  
–
–
–
–
mV  
mA  
30  
–
Table 4 lists the TXN22120 Optical Transceiver transmitter electrical specifications.  
Table 4. Electrical Characteristics – Transmitter  
Parameter  
Symbol  
Min.  
Typ.  
Max.  
Units  
Notes  
CML Input (Single Ended)  
CML Input (Differential)  
–
–
250  
500  
–
–
1100  
2200  
mVpp  
mVpp  
AC coupled inputs  
Peak-to-peak voltage  
Input Impedance  
(Differential)  
Z
V
85  
2
100  
–
115  
Ω
V
V
V
V
–
–
–
IN  
IH  
TX_DISABLE input voltage -  
High  
V +0.3  
cc  
TX_DISABLE input voltage -  
Low  
V
0
–
0.8  
IL  
TX_Fault Output Voltage -  
High  
I
= 40 µA,  
OH  
V
2.0  
0
–
V +0.3  
cc  
OH  
1 TTL Unit Load  
TX_Fault Output Voltage -  
Low  
I
OL  
= -1.6 mA,  
V
–
0.8  
OL  
1 TTL Unit Load  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
10  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Table 5 lists the TXN22120 Optical Transceiver receiver electrical specifications.  
Table 5. Electrical Characteristics – Receiver  
Parameter  
Symbol  
Min.  
Typ.  
Max.  
Units  
Notes  
CML Output (Single Ended)  
CML Output (Differential)  
CML Output (Rise/Fall Time)  
–
–
–
300  
600  
–
400  
800  
–
800  
1600  
120  
mVpp  
mVpp  
ps  
AC-coupled outputs  
Peak-to-peak voltage  
20% - 80%  
Output Impedance  
(Differential)  
Zout  
–
85  
0
100  
–
115  
0.8  
Ω
V
V
–
I
= -1.6 mA,  
OL  
TTL LOS Output - Low  
TTL LOS Output - High  
1 TTL Unit Load  
I
= 40 μA,  
OL  
V
2.0  
–
V
+ 0.3  
CC  
OH  
1 TTL Unit Load  
Deterministic Jitter  
Total Jitter (pk-pk)  
DJ  
TJ  
–
–
–
70  
–
55  
ps  
Ps  
V
–
90  
See Note  
With Serial ID  
–
V
2.5  
0
V
+ 0.3  
CC  
OH  
V
–
0.5  
–
V
OL  
MOD_DEF (0:2)  
Measured to  
RGND/TGND  
NC  
100 k  
–
Ω
NOTE: Peak-to-peak jitter measured by Agilent Technologies* DCA with 2.7 GHz plug-in. 27-1 PRBS pattern.  
100 waveforms at -12 dBm optical input power.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
18-April-2007  
Order Number: 304463, Revision: 005US  
11  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
2.3  
Optical Specifications  
Table 6 lists the TXN22120 Optical Transceiver fiber length specifications.  
Table 6. Fiber Length Specifications  
Parameter  
9 µm/125 µm SMF  
Symbol  
Min.  
Typ.  
Max.  
Units  
Notes  
–
2
–
10,000  
m
BER < 1.0E-12 @ 1.25 Gbps  
Note: Dispersion limited per 802.3 1000BASE-LX. Attenuation of 0.16 dB/km is used for the link length  
calculations. Distance is indicative only.  
Table 7 lists the TXN22120 Optical Transceiver transmitter optical specifications.  
Table 7. Optical Specifications – Transmitter  
Parameter  
Symbol  
Min.  
Typ.  
Max.  
Units  
Notes  
Optical Transmit Power  
Optical Center  
Popt  
–
-9  
-5.5  
–
-3  
dBm  
nm  
Average launch power  
–
1270  
1360  
Spectral Width  
–
–
3
nm  
RMS  
Δλ  
Extinction Ratio  
ER  
RIN  
DJ  
10  
–
–
–
–
–
dB  
dB/Hz  
ps  
–
–
–
Relative Intensity Noise  
Deterministic Jitter  
-118  
50  
–
Peak-to-peak jitter  
measured by Agilent*  
DCA.  
Total Jitter  
TJ  
–
–
90  
ps  
500 waveforms. 27 - 1  
PRBS pattern.  
20 - 80% values,  
measured unfiltered  
Output Rise/Fall Time  
TX Disable  
tR, tF  
–
–
–
–
–
120  
-35  
ps  
When 2.0 Vdc applied to  
TX_disable input  
dBm  
Note: Eye Mask: Compliant with eye mask requirements of IEEE 802.3z.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
12  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Table 8 lists the TXN22120 Optical Transceiver receiver optical specifications.  
Table 8. Optical Specifications – Receiver  
Parameter  
Symbol  
Min.  
Typ.  
Max.  
Units  
Notes  
Optical Input  
Wavelength  
–
1270  
–
1360  
nm  
–
1.25 Gbps  
Test conditions:  
•
•
•
10-12 BER,  
9dB ER input  
27 - 1 PRBS  
Receiver Sensitivity  
Pr  
-23  
-25  
–
dBm  
Stressed Sensitivity  
Receiver Overload  
Optical Return Loss  
Compliant with IEEE 802.3z Gigabit Ethernet 1000 BASE-LX standard  
–
–
–
–
0
–
dBm  
dB  
–
–
ORL  
12  
Measured on transition -  
low to high  
LOS - Asserted  
Pa  
-29  
–
-27  
dB  
Measured on transition -  
low to high  
LOS - De-asserted  
LOS - Hysteresis  
Pd  
–
-25  
3
-21  
5
dBm  
dB  
Pa - Pd  
0.5  
–
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
13  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
3.0  
Electrical Interface  
Figure 1 shows the TXN22120 Optical Transceiver electrical interface pin numbers and  
names.  
Figure 1. Electrical Interface Pin Numbers and Names  
B3242-01  
Table 9 lists the plug sequence to follow during hot plugging, as well as pin functions.  
Table 9. Plug Sequence: Pin Engagement Sequence During Hot Plugging (Sheet 1 of 2)  
Plug  
Sequence  
Pin No.  
Name  
Function  
Notes  
1
2
V T  
Transmitter Ground  
1
3
–
ee  
TX_FAULT  
Transmitter Fault Indication  
Note 1  
Note 2: Transmitter disables on high  
or open  
3
TX_DISABLE  
Transmitter Disable  
3
4
5
MOD_DEF (2)  
MOD_DEF (1)  
MOD_DEF (0)  
RATE SELECT  
LOS  
Module Definition 2  
Module Definition 1  
Module Definition 0  
–
3
3
3
3
3
1
1
1
3
Note 3: Wire Serial ID interface  
Note 3: Wire Serial ID interface  
6
Note 3: Ground  
7
4
5
6
6
6
7
8
Loss of Signal  
9
V
R
R
R
Receiver Ground  
Receiver Ground  
Receiver Ground  
Inverted Received Data out  
ee  
10  
11  
12  
V
ee  
V
ee  
RD-  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
14  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Table 9. Plug Sequence: Pin Engagement Sequence During Hot Plugging (Sheet 2 of 2)  
Plug  
Sequence  
Pin No.  
Name  
Function  
Notes  
Non-Inverted Received  
Data out  
13  
RD+  
3
7
6
14  
15  
V
R
Receiver Ground  
Receiver Power  
1
2
2
1
3
3
1
ee  
V R  
3.3 V +/- 10%, Note 8  
cc  
16  
V T  
Transmitter Power  
Transmitter Ground  
Non-inverted Data In  
Inverted Data In  
Transmitter Ground  
3.3 V +/- 10%, Note 8  
cc  
17  
V T  
ee  
6
9
9
6
18  
TD+  
TD-  
19  
20  
V T  
ee  
Note:  
1. TX FAULT is an open collector/drain output that is pulled up with a 4.7 - 10 kΩ resistor on the host board.  
Use a pull-up voltage between 2.0 V and VccT, R+0.3 V.  
•
•
Low: Indicates normal operation. In the low state, the output is pulled to < 0.8 V.  
High: Indicates a laser fault.  
2. TX DISABLE is an input used to shut down the transmitter optical output. It is pulled up within the  
TXN22120 Optical Transceiver with a 4.7 - 10 kΩ resistor. The states are as follows:  
•
•
•
Low (0 - 0.8 V): Transmitter Enabled  
(>0.8, <2.0 V): Undefined  
High (2.0 - 3.465 V): Transmitter Disabled  
3. MOD-DEF 0, 1, 2: These pins are definition pins for the TXN22120 Optical Transceiver. They are pulled up  
with a 4.7 - 10 kΩ resistor on the host board. Use a pull-up voltage between 2.0 V and VccT, R+0.3 V.  
•
MOD-DEF 0 is grounded by the TXN22120 Optical Transceiver to indicate that the TXN22120 Optical  
Transceiver is present.  
•
•
MOD-DEF 1 is the clock line of a two-wire serial interface for serial ID.  
MOD-DEF 2 is the data line of a: two-wire serial interface serial ID.  
4. RATE SELECT: This signal function is not implemented in the TXN22120 Optical Transceiver. The  
TXN22120 Optical Transceiver is rate agile – that is, it meets the specifications for 1.25 Gbps data rates  
without the use of a rate-select pin.  
5. LOS (Loss of Signal) is an open collector output that must be connected to VccR with an external 4.7K – 10K pull-up  
resistor.  
•
•
When low, this output indicates normal operation. In the low state, the output is pulled to < 0.8V.  
When high, this output indicates the received optical power is below the worst-case receiver sensitivity  
(as defined by the standard in use).  
6. V R and V T may be internally connected within the TXN22120 Optical Transceiver.  
ee  
ee  
7. RD-/+ are the differential receiver outputs. They are AC-coupled 100 Ω differential lines that are  
terminated with 100 Ω (differential) at the user SerDes. The AC coupling is done inside the TXN22120  
Optical Transceiver and is therefore not required on the host board.  
8. V R and V T are the receiver and transmitter power supplies. They are defined as 3.3 V +/-10% at the  
cc  
cc  
TXN22120 Optical Transceiver connector pin. The maximum supply current is 200 mA. Hot plugging of the  
TXN22120 Optical Transceiver results in an inrush current of no more than 30 mA greater than the steady  
state value. VccR and VccT may be internally connected within the TXN22120 Optical Transceiver.  
9. TD-/+ are the differential transmitter inputs. They are AC-coupled differential lines with 100 Ω differential  
termination inside the TXN22120 Optical Transceiver. The AC coupling is done inside the  
TXN22120 Optical Transceiver and is therefore not required on the host board.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
18-April-2007  
Order Number: 304463, Revision: 005US  
15  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
4.0  
Termination  
4.1  
Types of I/O Interfaces  
The TXN22120 Optical Transceiver has the following types of I/O interfaces:  
• CML interface  
• TTL interface  
High-speed I/Os use the CML interface, while control signals use the TTL interface.  
Proper termination of I/Os is required for good signal integrity. If I/Os (particularly the  
CML I/Os) are not terminated properly, then jitter increases significantly due to  
reflection from impedance mismatches.  
4.2  
CML Termination  
Figure 2 shows a circuit diagram for the CML termination for the TXN22120 Optical  
Transceiver receiver output. The TXN22120 Optical Transceiver has built-in AC-coupling  
capacitors, which help prevent a direct current path from the TXN22120 Optical  
Transceiver power supply to the SerDes input. (A direct current path could damage the  
ESD diodes on the SerDes.)  
• Internal termination. For the TXN22120 Optical Transceiver receiver output, the  
SerDes interface provides an internal termination resistor.  
• External termination. For the proper external termination of the SerDes  
interface, refer to the SerDes specification.  
Figure 2. Circuit Diagram for CML Termination on Receiver Output  
3.3 V  
50 Ω  
AC-coupling  
capacitor  
100  
Ω
Receiver Output  
SerDes Input  
B3243-02  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
16  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Figure 3 shows a circuit diagram for the CML termination for the TXN22120 Optical  
Transceiver transmitter input.  
Internal termination. The TXN22120 Optical Transceiver transmitter input has an  
internal 100 Ω termination between two inputs. AC-coupling capacitors are also built into  
the TXN22120 Optical Transceiver.  
Figure 3. Circuit Diagram for CML Termination on Transmitter Input  
3.3 V  
AC-Coupling  
Capacitor  
100 Ω  
Transmitter Input  
SerDes Output  
B3244-02  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
17  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
5.0  
SFP Timing Parameters  
Table 10 lists timing parameters for SFP management.  
Table 10.Timing Parameters for SFP Management  
Parameter  
Symbol  
Min.  
Max.  
Unit  
Conditions  
Time from rising edge of  
TX_DISABLE to when the optical  
output falls below 10% of nominal  
TX_DISABLE assert time  
t_off  
–
10  
µs  
Time from falling edge of  
TX_DISABLE to when the modulated  
optical output rises above 90% of  
nominal  
TX_DISABLE negate time  
t_on  
–
1
ms  
Time to initialize includes  
reset of TX_FAULT  
Time from power on or negation of  
TX_FAULT using TX_DISABLE  
t_init  
t_fault  
t_reset  
–
–
300  
100  
–
ms  
µs  
µs  
TX_FAULT Assert Time  
TX Disable to reset  
Time from fault to TX_FAULT ON  
Time TX Disable must be held high to  
reset TX_FAULT  
10  
Time from LOS state to RX_LOS  
assert  
RX_LOS Assert time  
t_loss_on  
t_loss_off  
–
–
100  
100  
µs  
µs  
Time from non-LOS state to RX_LOS  
de-assert  
RX_LOS De-assert time  
Time from rising or falling edge of  
Rate Select input until receiver  
bandwidth is in conformance with  
appropriate specification  
Rate-Select Change time  
Serial ID Clock Rate  
t_ratesel  
–
–
10  
µs  
f_serial_clock  
100  
KHz  
–
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
18  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
6.0  
Mechanical Specification  
Figure 4 shows the TXN22120 Optical Transceiver SFP mechanical specifications. The  
dimensions comply with the SFP MSA.  
Note:  
Aqueous wash is not applicable for this product.  
Figure 4.  
SFP Mechanical Specifications  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
18-April-2007  
Order Number: 304463, Revision: 005US  
19  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
7.0  
Regulatory Compliance  
This section discusses the following topics:  
• Section 7.1, “Electromagnetic Compatibility Compliance” on page 20  
• Section 7.2, “Safety Compliance” on page 21  
• Section 7.3, “Lead-Free Conformance” on page 22  
• Section 7.4, “Compliance with Restriction of Hazardous Substances” on page 23  
• Section 7.5, “Management Methods on Control of Pollution from Electronic  
Information Products (a.k.a. China RoHS)” on page 24  
• Section 7.6, “Product Certification Markings and Compliance Statements” on  
page 25  
7.1  
Electromagnetic Compatibility Compliance  
Table 11 lists emissions and immunity regulations with which the TXN22120 Optical  
Transceiver complies when tested in a representative chassis.  
Table 11.Regulatory Compatibilty Compliance  
Regulatory Requirement  
Applicable Standards  
Performance  
•
•
FCC rules, Part 15, subpart B  
EN 55022  
Meets Class B limits with a  
minimum 6 dB margin  
Electromagnetic interference (EMI)  
± 2 kV contact discharge to  
connector electrical pins with no  
degradation in performance or  
loss of function  
JEDEC JESD22-A114-B  
Human Body Model  
•
•
±15 kV air discharge  
±8 kV contact discharge to  
face plate  
Electro-Static Discharge (ESD)  
Meets Level B test criteria (that  
is, no degradation of performance  
or loss of function occurs).  
EN 61000-4-2  
Actual ESD may vary, depending  
on system configuration.  
10 V/m from 80 MHz to 1 GHz  
with no degradation of  
performance or loss of function  
EN 61000-4-3  
Level A test criteria  
Radio Frequency Electro-Magnetic  
field (Radiated immunity)  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
20  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
7.2  
Safety Compliance  
Table 12 lists and describes the relevant safety standards and regulations with which  
the TXN22120 Optical Transceiver complies.  
Table 12.  
Safety Compliance  
Requirement  
Regulation  
Title  
UL 60950-1  
Information Technology Equipment – Safety - Part 1:  
General Requirements (USA and Canada)  
CSA C22.2 No. 60950-1  
EN 60950-1+A11  
Information Technology Equipment – Safety - Part 1:  
General Requirements (European Union)  
Product Safety  
Information Technology Equipment – Safety - Part 1:  
General Requirements (International)  
IEC 60950-1  
Compliant with the fire resistance requirements of  
Telcordia Technologies Generic Requirements GR-63-CORE  
document for discrete electronic components.  
GR-63-CORE Section 4.2,  
Clause 4.2.3.1  
Title 21 Chapter I Subchapter J –  
Radiological Health Part 1040:  
21CFR1040.10  
Performance Standards for Light-Emitting Products  
Safety of Laser Products - Part 1:  
EN 60825-1+A1 +A2  
IEC 60825-1+A1 +A2  
EN 60825-2  
Equipment Classification, Requirements and User's Guide  
Laser Safety  
Safety of Laser Products - Part 1:  
Equipment Classification, Requirements and User's Guide  
Safety of Laser Products - Part 2:  
Safety of Optical Fiber Communication Systems  
Safety of Laser Products - Part 2:  
Safety of Optical Fiber Communication Systems  
IEC 60825-2  
Caution:  
This device is a Class 1 laser product for use only under the recommended operating  
conditions and ratings specified in this document.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
18-April-2007  
Order Number: 304463, Revision: 005US  
21  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
7.3  
Lead-Free Conformance  
The TXN22120 Optical Transceiver uses a lead-free assembly, although certain discrete  
components within the assembly may contain lead, being necessary for either  
component performance or reliability. The TXN22120 Optical Transceiver is referred to  
as a “Lead-free 2nd Level Interconnect.” The enclosure, circuit board substrate, and the  
solder connections from the circuit board to the components (second-level connections)  
are all lead-free.  
Table 13 lists various forms of the “Lead-Free 2nd Level Interconnect” marking for the  
TXN22120 Optical Transceiver and accompanying collateral.  
Table 13.  
Lead-Free 2nd-Level Interconnect Markings  
Description  
Marking  
Lead-Free 2nd Level Interconnect:  
The Lead-Free 2nd Level Interconnect  
symbol is used to identify electrical and  
electronic assemblies and components  
in which the lead (Pb) concentration  
level in the circuit board substrate and  
the solder connections from the circuit  
board to the components (second-level  
interconnect) are not greater than 0.1%  
by weight (1000 ppm).  
or  
or  
Note: Any of the three symbols  
shown may be used, as space  
permits.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
22  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
7.4  
Compliance with Restriction of Hazardous Substances  
This product complies with the European Union directive for Restriction of Hazardous  
Substances (RoHS) – Restriction on the Use of Certain Hazardous Substances in  
Electrical and Electronic Equipment, Directive 2002/95/EC plus amendments.  
However, certain discrete components do contain lead (a RoHS-restricted substance) in  
amounts that exceed threshold concentration levels. This product uses the following  
applicable RoHS technology exemptions:  
• Lead in optical and filter glass  
• Lead in glass of electronic components  
• Lead in solders to complete a viable electrical connection between semiconductor  
die and carrier within integrated circuit Flip Chip packages  
Note: RoHS implementation details are subject to change.  
This product is RoHS 6 compliant, defined as complying with the restriction for all six  
listed substances by meeting strict threshold levels for those substances or through the  
use of the applicable exemptions listed above.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
18-April-2007  
Order Number: 304463, Revision: 005US  
23  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
7.5  
Management Methods on Control of Pollution from  
Electronic Information Products (a.k.a. China RoHS)  
关于符合中国《电子信息产品污染控制管理办法》的声明  
Table 14.  
Hazardous Substances Table  
产品中有毒有害物质的名称及含量  
有毒有害物质或元素 (Hazardous Substance)  
多溴二苯醚  
(PBDE)  
铅
(Pb)  
汞
(Hg)  
镉
(Cd)  
多溴联苯  
(PBB)  
部件名称  
(Parts)  
六价铬  
(Cr(VI))  
集成光电器件  
Integrated optical circuit board  
×
○
○
○
○
○
○
○
○
○
○
assembly  
金属盒件  
Metal enclosure  
○
○：表示该有毒有害物质在该部件所有均质材料中的含量均在SJ/T 11363-  
2006标准规定的限量要求以下。  
○：Indicates that this hazardous substance contained in all homogeneous materials of this part is below the  
limit requirement in SJ/T 11363-2006.  
×：表示该有毒有害物质至少在该部件的某一均质材料中的含量超出SJ/T 11363-  
2006标准规定的限量要求。  
×：Indicates that this hazardous substance contained in at least one of the homogeneous materials of this  
part is above the limit requirement in SJ/T 11363-2006.  
对销售之日的所售产品,本表显示我公司供应链的电子信息产品可能包含这些物质。注意：在所售产  
品中可能会也可能不会含有所有所列的部件。  
This table shows where these substances may be found in the supply chain of our electronic information  
products, as of the date of sale of the enclosed product. Note that some of the component types listed above  
may or may not be a part of the enclosed product.  
除非另外特别的标注,此标志为针对所涉及产品的环保使用期限标志.此环保使用  
期限只适用于产品在产品手册中所规定的条件下工作.  
The Environment-Friendly Use Period (EFUP) for all enclosed products and their parts are per  
the symbol shown here, unless otherwise marked. The Environment-Friendly Use Period is  
valid only when the product is operated under the conditions defined in the product manual.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
24  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
7.6  
Product Certification Markings and Compliance  
Statements  
Table 15 lists the TXN22120 Optical Transceiver product certification markings and  
compliance statements.  
Table 15.  
Product Certification Markings and Compliance Statements  
Origin and Description  
Markings and Compliance Statements  
Markings  
CE mark.  
The CE (Conformité Européene*) mark indicates compliance  
to the European Union Low Voltage directive (2006/95/EC,  
formerly 73/23/EEC).  
TÜV Rheinland type approval mark for components and  
subassemblies for the European Union.  
The Technischer Überwachungsverein* (TÜV – German for  
“Technical Inspection Association”) Rheinland type approval  
mark is for components and subassemblies for the European  
Union.  
Where space does not permit, the smaller alternate TÜV  
mark (see the next row in this table) may be used.  
Alternate TÜV mark:  
TÜV Rheinland type approval mark for components and  
subassemblies for the European Union – Alternate.  
This alternate mark may be used where space constraints  
exist that do not permit use of the TUV Rheinland mark in  
the previous row of this table.  
UL Recognized Component mark for the USA and Canada.  
China Environmental Friendly Use Period (EFUP) mark,  
where 30 in the marking denotes 30 years.  
Compliance Statements  
Complies with 21CFR 1040.10 except for  
deviations pursuant to Laser Notice No. 50,  
dated July 26, 2001.  
USA Food and Drug Administration (FDA), Center for  
Devices and Radiological Health compliance statement.  
Alternate FDA compliance statement:  
USA FDA, Center for Devices and Radiological Health  
Complies with FDA performance standards for  
laser products except for deviations pursuant  
to Laser Notice No. 50, dated July 26, 2001.  
compliance statement – Alternate.  
Use the alternate statement listed, as needed.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
25  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
8.0  
Ordering Information  
Table 16 lists ordering information for the TXN22120 Optical Transceiver.  
Table 16.Ordering Information  
MM  
Number  
Part Number  
Description  
1 GbE SFP LX, 10 Km, 1310 nm Optical Transceiver Compliant  
with RoHS 6  
TXN221200000xxx1  
867465  
NOTE:  
1. The last 3 characters of the part number ("xxx") are used to designate customer-specific customizations.  
A standard Intel device has "000" as the last three characters.  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
26  
18-April-2007  
Order Number: 304463, Revision: 005US  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
9.0  
Acronyms  
Table 17.  
Acronyms  
Acronym  
Meaning  
BER  
CFR  
CML  
EMI  
ESD  
EU  
Bit Error Rate  
Code of Federal Relations  
Current Mode Logic  
Electro-Magnetic Interference  
Electro-Static Discharge  
European Union  
FCC  
FDA  
FP  
Federal Communications Commission  
Food and Drug Administration  
Fabry Perot  
Gbps  
IEC  
Gigabits per second  
International Electrotechnical Commission  
Institute of Electrical and Electronics Engineers  
Loss of Signal  
IEEE  
LOS  
MSA  
PRBS  
RoHS  
SerDes  
SFF  
Multi-Source Agreement  
Pseudo Random Bit Sequence  
Restriction of Hazardous Substances  
Serializer/Deserializer  
Small Form-Factor  
SFP  
Small Form-Factor Pluggable  
Single-Mode Fiber  
SMF  
TTL  
Transistor-Transistor Logic  
Underwriter Laboratories  
UL  
§ §  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
18-April-2007  
Order Number: 304463, Revision: 005US  
Datasheet  
27  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Intel® TXN22120 Gigabit Ethernet 1310 nm Optical Transceiver  
Datasheet  
28  
18-April-2007  
Order Number: 304463, Revision: 005US  
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