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Intel^®TXN21125 4G FC 1310 nm SFP 4 km

Optical Transceiver - SFP* MSA Compatible

Datasheet

The Intel^®LC Small-Form Factor Pluggable (SFP) optical transceivers are high-performance

integrated modules for bi-directional communication over single-mode optical fiber.

The Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible (called

hereafter the TXN21125 4G Optical Transceiver) is specifically designed for high-speed Fibre Channel

data links at 4.25 Gbps (4x Fibre Channel rate). The TXN21125 4G Optical Transceiver is also

backwards compatible with 2x and 1x Fibre Channel and Gigabit Ethernet rates.

The TXN21125 4G Optical Transceiver has an LC receptacle that is compatible with the

industry-standard LC connector. The TXN21125 4G 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.

Compliant with the Fibre Channel FC- Transmitter Disable Input

PI Standard

AC-coupled CML Level Input/Output

Single +3.3 V Power Supply

Class 1 Laser Safety Product

IEC/UL 60950-1 Safety Certified

4.25/2.125/1.0625 Gbps Fibre

Channel and 1.25 Gbps Ethernet

Compatible

Compatible with the SFP Multisource

Designed and verified as RoHS

Agreement (MSA) Specification

compliant

Hot pluggable

1310 nm FP laser-based emitter

TTL Loss of Signal (LOS) Output

China RoHS compliant with 30-year

EFUP

Digital Diagnostics Support

Applications

Fibre Channel Switch

Fibre Channel Host Bus Adapter

Order Number: 311736, Revision: 004US

26-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^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible 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.

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

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26-April-2007

Order Number: 306089, Revision:004US

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Contents

1.0 Introduction..............................................................................................................7

2.0 Specifications and Characteristics .............................................................................8

2.1

2.2

2.3

Maximum Ratings and Recommended Operating Conditions ......................................8

Electrical Characteristics.......................................................................................9

Optical Specifications......................................................................................... 11

3.0 Electrical Interface.................................................................................................. 13

4.0 Termination............................................................................................................. 15

4.1

4.2

Types of I/O Interfaces ...................................................................................... 15

CML Termination............................................................................................... 15

5.0 SFP Timing Parameters ........................................................................................... 17

6.0 Digital Diagnostic Monitoring Interface ................................................................... 18

6.1

6.2

6.3

6.4

6.5

6.6

Overview of Digital Diagnostic Monitoring Interface................................................ 18

General Memory Map Descriptions....................................................................... 19

Alarm and Warning Fields for 2-Wire Interface Address A2h .................................... 20

A/D Fields for 2-Wire Interface Address A2h.......................................................... 22

Alarm and Warning Flags Fields for 2-Wire Interface Address A2h............................ 23

Masking Alarm and Warning Flag Fields for 2-Wire Interface Address A2h ................. 25

7.0 Mechanical Specifications........................................................................................ 26

8.0 Regulatory Compliance............................................................................................ 27

8.1

8.2

8.3

8.4

8.5

Electromagnetic Compatibility Compliance ............................................................ 27

Safety Compliance............................................................................................. 28

Lead-Free Conformance ..................................................................................... 29

Compliance with Restriction of Hazardous Substances ............................................ 29

Management Methods on Control of Pollution from Electronic Information Products

(a.k.a. China RoHS)........................................................................................... 30

Product Certification Markings and Compliance Statements ..................................... 31

8.6

9.0 Ordering Information ............................................................................................. 32

10.0 Acronyms ................................................................................................................ 33

Figures

1

2

3

4

Electrical Interface Pin Numbers and Names ................................................................ 13

Circuit Diagram for CML Termination on Receiver Output............................................... 15

Circuit Diagram for CML Termination on Transmitter Input............................................. 16

Mechanical Specifications .......................................................................................... 26

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

26-April-2007

Order Number: 311736, Revision: 004US

Datasheet

3

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Tables

1

2

3

4

5

6

7

8

9

Absolute Maximum Ratings......................................................................................... 8

Recommended Operating Conditions............................................................................ 8

Electrical Characteristics – Power and Current ............................................................... 9

Electrical Characteristics – Transmitter......................................................................... 9

Electrical Characteristics – Receiver ............................................................................10

Fiber Length Specifications ........................................................................................11

Optical Specifications – Transmitter ............................................................................11

Optical Specifications – Receiver.................................................................................12

Plug Sequence: Pin Engagement Sequence During Hot Plugging .....................................13

10 Timing Parameters for SFP Management......................................................................17

11 Memory Map – 2-Wire Address Range Descriptions .......................................................19

12 Alarm and Warning Fields – 2-Wire Address 1010001X (0XA2), Addresses 0-95................20

13 A/D Fields – 2-Wire Address 1010001X (0XA2), Addresses 96-109..................................22

14 A/D Status/Control Bits – 2-Wire Address 1010001X (0XA2), Address 110 .......................22

15 Alarm Flags Address – 2-Wire Address 1010001X (0XA2), Addresses 112 and 113 ............23

16 Warning Flags Address – 2-Wire Address 1010001X (0XA2) Addresses 116 and 117..........24

17 Masking Alarm and Warning Flags Address– 2-Wire Address A2h, Address 136 .................25

18 Regulatory Compatibility Compliance...........................................................................27

19 Safety Compliance....................................................................................................28

20 Lead-Free 2^nd-Level Interconnect Markings ..................................................................29

21 Hazardous Substances Table......................................................................................30

22 Product Certification Markings and Compliance Statements ............................................31

23 Ordering the Intel^®TXN21125 4G Optical Transceiver...................................................32

24 Acronyms................................................................................................................33

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

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26-April-2007

Order Number: 311736, Revision: 004US

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Revision History

Date

Revision

Description

Changes for datasheet for Intel® TXN21125 4G Optical Transceiver -

- Table 5, “Electrical Characteristics – Receiver” on page 10 - Text changed

- Table 18, “Regulatory Compatibility Compliance” on page 27 - Text changed

- Figure 4, “Mechanical Specifications” on page 26 - replaced

26-April-2007

004

- Table 8.2, “Safety Compliance” on page 28- Text changed

- Table 8.4, “Compliance with Restriction of Hazardous Substances” on page 29 - Text changed

-Table 8.5, “Management Methods on Control of Pollution from Electronic Information Products

(a.k.a. China RoHS)” on page 30 - New section added

Table 8.6, “Product Certification Markings and Compliance Statements” on page 31- Text changed

Changes for datasheet for Intel® TXN21125 4G Optical Transceiver -

- General edit for consistency (including standardizing document title and text that refers to RoHS

compliance)

- Front page - text changed

- Table 1, “Absolute Maximum Ratings” on page 8 - Text changed

- Table 6, “Fiber Length Specifications” on page 11 - Text changed

- Table 8, “Optical Specifications – Receiver” on page 12 - Row for Stressed Sensitivity changed

- Table 9, “Plug Sequence: Pin Engagement Sequence During Hot Plugging” on page 13 - Notes

changed

8-Aug-2006

003

- Table 13, “A/D Fields – 2-Wire Address 1010001X (0XA2), Addresses 96-109” on page 22 -

Changed table title and text

- Section 6.5, “Alarm and Warning Flags Fields for 2-Wire Interface Address A2h” on page 23 -

Added

- Section 6.6, “Masking Alarm and Warning Flag Fields for 2-Wire Interface Address A2h” on

page 25 - Added

- Section 8.0, “Regulatory Compliance” on page 27 - Updated this section

Initial release of datasheet for Intel® TXN21125 4G Optical Transceiver

Version number does not apply to datasheet for Intel® TXN21125 4G Optical Transceiver

28-Feb-2006

–

002

001

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

26-April-2007

Order Number: 311736, Revision: 004US

Datasheet

5

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

6

26-April-2007

Order Number: 311736, Revision: 004US

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

1.0

Introduction

The Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA

Compatible[called hereafter the TXN21125 4G Optical Transceiver or “the module(s)”]

is specifically designed for high-speed Fibre Channel data links at 4.25 Gbps (4x Fibre

Channel rate).

This document discusses the following topics:

• Chapter 2.0, “Specifications and Characteristics,” on page 8

• Chapter 3.0, “Electrical Interface,” on page 13

• Chapter 4.0, “Termination,” on page 15

• Chapter 5.0, “SFP Timing Parameters,” on page 17

• Chapter 6.0, “Digital Diagnostic Monitoring Interface,” on page 18

• Chapter 7.0, “Mechanical Specifications,” on page 26

• Chapter 8.0, “Regulatory Compliance,” on page 27

• Chapter 9.0, “Ordering Information,” on page 32

• Chapter 10.0, “Acronyms,” on page 33

For information on standards that apply to the TXN21125 4G 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

• IEEE Std 802.3z, 1998 Edition. Gigabit Interface Converter (GBIC) Ethernet

Standard.

• Small Form-factor Pluggable (SFP) Transceiver Multi-source Agreement (MSA)

• Telcordia Technologies* GR-63 Section 4.2

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

26-April-2007

Order Number: 311736, Revision: 004

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

2.0

Specifications and Characteristics

Specifications and characteristics include the following:

• Section 2.1, “Maximum Ratings and Recommended Operating Conditions” on

page 8

• Section 2.2, “Electrical Characteristics” on page 9

• Section 2.3, “Optical Specifications” on page 11

2.1

Maximum Ratings and Recommended Operating

Conditions

Table 1 lists the absolute maximum ratings for the TXN21125 4G Optical Transceiver.

Table 1. Absolute Maximum Ratings

Parameter

Symbol

Min

Typ

Max

Units

Notes

Storage Temperature

Relative Humidity

Supply Voltage

T

-40

5

–

85

°C

%

–

s

RH

T, R

95

4

–

V

-0.5

–

V

–

cc

Data AC Voltage

TD+ and TD-

Vi

2.6

Vpp

V

Differential

–

Control Input Voltage

-0.5

Vcc + 0.3

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

Symbol

Min

Typ

Max

Units

Case Temperature

Supply Voltage

Data Rate

T

-30

2.97

–

3.3

–

85

°C

c

V

T, R

3.63

4.25

VDC

Gbps

cc

–

1.0625

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

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26-April-2007

Order Number: 311736, Revision: 004US

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

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 8).

-30 °C < Tc < 85 °C, 3.0 V < Vcc < 3.6 V

Table 3 lists the TXN21125 4G Optical Transceiver electrical characteristics for power

and current.

Table 3. Electrical Characteristics – Power and Current

Parameter

Symbol

Min

Typ

Max

Units Notes

170

200

mA

T = 25°C, V = 3.3 V

c cc

Supply Current

l

–

cc

-30° C <T < 85°C,

c

–

450

–

250

910

–

2.97 V< V <3.63 V

cc

-30° C < TC < 85° C,

2.97 V < Vcc < 3.63 V

Power Dissipation

Pdiss

–

mW

mV

10 kHz to 4 MHz

with supply filter

Supply Noise Rejection

100

Hot plugging of the TXN21125

4G Optical Transceiver results

in the inrush current of no

more than 30 mA greater than

the steady state value.

Inrush Current

–

30

mA

Table 4 lists the TXN21125 4G Optical Transceiver transmitter electrical characteristics.

Table 4. Electrical Characteristics – Transmitter

Parameter

Symbol

Min

Typ

Max

Units

Notes

CML Input (Single Ended)

CML Input (Differential)

–

250

500

–

1100

2200

mVpp

AC Coupled Inputs

Peak-to-peak voltage

Input Impedance

(Differential)

Z

V

85

2

100

–

115

Ω

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

IOH = 40 µA,

1 TTL Unit Load

V

2.0

0

–

Vcc + 0.3

0.8

OH

TX_Fault Output Voltage -

Low

IOL = -1.6 mA,

1 TTL Unit Load

V

–

OL

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

26-April-2007

Order Number: 311736, Revision: 004

Datasheet

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Table 5 lists the TXN21125 4G Optical Transceiver receiver electrical characteristics.

Table 5. Electrical Characteristics – Receiver

Parameter

Symbol

Min

Typ

Max

Units

Notes

CML Output (Single Ended)

CML Output (Differential)

CML Output (Rise/Fall Time)

–

250

500

–

300

600

–

500

1000

90

mVpp

ps

AC-coupled outputs

Peak-to-peak voltage

20% - 80%

Output Impedance

(Differential)

Zout

–

85

0

100

–

115

0.8

Ω

V

–

TTL Loss of Signal (LOS)

Output - Low

I

= -1.6 mA,

OL

1 TTL Unit Load

V

+

0.3

I

40 μA,

OL =

CC

TTL LOS Output - High

V

2.0

–

OH

1 TTL Unit Load

Deterministic Jitter

Total Jitter

DJ

TJ

25

62

ps

–

2.5

0

–

V

+

CC

0.3

V

Ω

With Serial ID

–

OH

MOD_DEF (0:2)

V

0.5

–

OL

Measured to RGND/

TGND

NC

100 k

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

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Order Number: 311736, Revision: 004US

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

2.3

Optical Specifications

Table 6 lists the TXN21125 4G Optical Transceiver fiber length specifications.

Table 6.

Fiber Length Specifications

Parameter

Symbol

Min

Typ

Max

Units

Notes

1.0625,

1.25,

2.125,

4.25

Data rate

BR

Gbps

1

5

Bit Error Rate

9 µm SMF

NOTES:

BER

L

10^-12

10,000

4,000

2

3

4

2

–

m

1. 1000BASE-LX compatible per IEEE802.3 and 1x, 2x, and 4x Fibre Channel compatible per FC-PI-2

2. Data rates at 1000BASE-LX Gigabit Ethernet and 1.0625 Gbps

3. Data rates at 2.125 Gbps Fibre Channel.

4. Data rate at 4.25 Gbps Fibre Channel.

5. Data rate at 4.25 Gbps with 2⁷- 1 PRBS pattern.

Table 7 lists the TXN21125 4G Optical Transceiver transmitter optical specifications.

Table 7. Optical Specifications – Transmitter

Parameter

Symbol

Min

Typ

Max

Units

Notes

Optical Transmit Power

Optical Center

Popt

-8

1270

–

-4.5

-2.0

1355

2

dBm

nm

Average launch power

1310

–

Spectral Width

–

nm

RMS

pk-pk

–

Optical Modulation Amplitude

Relative Intensity Noise

OMA

RIN

200

–

µW

-118

dB/Hz

Deterministic Jitter

Total Jitter

DJ

TJ

30

65

ps

–

20 - 80% values,

measured unfiltered

Output Rise/Fall Time

tR/tF

90

ps

Eye Mask: Compliant with eye mask requirements of Fibre Channel – Physical Interfaces (FC-PI-2)

specifications. IEEE 802.3z* Gigabit Ethernet 1000 BASE-LX standard.

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

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Order Number: 311736, Revision: 004

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Table 8 lists the TXN21125 4G Optical Transceiver receiver optical specifications.

Table 8. Optical Specifications – Receiver

Parameter

Symbol

Min

Typ

Max

Units

Notes

Optical Input

Wavelength

–

1270

–

1355

nm

–

4.25 Gbps

Test conditions:

•

T = 25°C

c

Receiver Sensitivity

Pr

-16

-18

–

dBm

V

= 3.3 V

cc

10^-12BER

5.5 dB ER input

2⁷- 1 PRBS

Stressed Sensitivity

Receiver Overload

Optical Return Loss

Meets the minimum IEEE 802.3z Gigabit Ethernet 1000 BASE-LX standard.

–

0

–

dBm

dB

–

ORL

12

Measured on transition -

low to high

LOS - Asserted

Pa

-29

–

dB

Measured on transition -

high to low

LOS - De-asserted

LOS - Hysteresis

Pd

–

1

–

-18

5

dBm

dB

Pa - Pd

–

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

3.0

Electrical Interface

Figure 1 shows the TXN21125 4G 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)

Number

Plug

Sequence

Name

Function

Notes

1

2

V

T

Transmitter Ground

1

3

–

ee

Transmitter Fault

Indication

TX_FAULT

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

1

Note 3: Wire Serial ID interface

6

Note 3: Ground

7

Note 4

8

Loss of Signal

Note 5

9

V

R

Receiver Ground

–

ee

10

11

V

ee

V

ee

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

26-April-2007

Order Number: 311736, Revision: 004

Datasheet

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Table 9. Plug Sequence: Pin Engagement Sequence During Hot Plugging (Sheet 2 of 2)

Number

Plug

Sequence

Name

Function

Notes

Inverted Received Data

out

12

13

RD-

3

Note 6

Non-Inverted Received

Data out

RD+

14

15

V

R

T

Receiver Ground

Receiver Power

1

2

1

3

1

–

ee

V

Note 7

–

cc

16

V

Transmitter Power

Transmitter Ground

Non-inverted Data In

Inverted Data In

Transmitter Ground

17

V T

ee

18

TD+

Note 8

–

19

TD-

20

V T

ee

NOTES:

1. TX FAULT is an open collector/drain output that is pulled up with a 4.7 K - 10 kW 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

TXN21125 4G Optical Transceiver with a 4.7 K - 10 kW 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 TXN21125 4G Optical Transceiver. They are pulled

up with a 4.7 - 10 kW 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 TXN21125 4G Optical Transceiver to indicate that the TXN21125 4G

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 for serial ID.

4. RATE SELECT: This signal function is not implemented in the TXN21125 4G Optical Transceiver. The

TXN21125 4G Optical Transceiver is rate agile – that is, it meets the specifications for 1.0625 Gbps to

4 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 –

10kW 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. RD-/+ are the differential receiver outputs. They are AC-coupled 100W differential lines that are

terminated with 100W (differential) at the user SerDes. The AC coupling is performed inside the TXN21125

4G Optical Transceiver and is therefore not required on the host board.

7. VccR and VccT are the receiver and transmitter power supplies. Their values, which are listed in Table 2,

“Recommended Operating Conditions” on page 8, are defined at the SFP connector pin. Maximum supply

current is listed in Table 3, “Electrical Characteristics – Power and Current” on page 9. Hot plugging of the

TXN21125 4G Optical Transceiver results in the inrush current listed in Table 3, “Electrical Characteristics –

Power and Current” on page 9.

8. TD-/+ are the differential transmitter inputs. They are AC-coupled differential lines with 100 W differential

termination inside the TXN21125 4G Optical Transceiver. The AC coupling is performed inside the

TXN21125 4G Optical Transceiver and is therefore not required on the host board.

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

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26-April-2007

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

4.0

Termination

4.1

Types of I/O Interfaces

The TXN21125 4G 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 TXN21125 4G Optical

Transceiver receiver output. The TXN21125 4G Optical Transceiver has built-in

AC-coupling capacitors, which help prevent a direct current path from the TXN21125 4G

Optical Transceiver power supply to the SerDes input. (A direct current path could

damage the ESD diodes on the SerDes.)

• Internal termination. For the TXN21125 4G 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

B3243-03

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

26-April-2007

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Figure 3 shows a circuit diagram for the CML termination for the TXN21125 4G Optical

Transceiver transmitter input.

Internal termination. The TXN21125 4G Optical Transceiver transmitter input has an

internal 100 Ω termination between two inputs. AC-coupling capacitors are also built

into the TXN21125 4G 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

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

5.0

SFP Timing Parameters

Table 10 lists the 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

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

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

–

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

6.0

Digital Diagnostic Monitoring Interface

This section includes the following topics:

• Section 6.1, “Overview of Digital Diagnostic Monitoring Interface” on page 18

• Section 6.2, “General Memory Map Descriptions” on page 19

• Section 6.3, “Alarm and Warning Fields for 2-Wire Interface Address A2h” on

page 20

• Section 6.4, “A/D Fields for 2-Wire Interface Address A2h” on page 22

6.1

Overview of Digital Diagnostic Monitoring Interface

The TXN21125 4G Optical Transceiver supports the 2-wire serial communication

protocol. The TXN21125 4G Optical Transceiver has a digital diagnostic monitoring

interface that is an extension of the serial ID interface defined in the Gigabit Interface

Converter (GBIC) specification and the SFP Transceiver MultiSource Agreement (MSA)

referenced in Section 1.0, “Introduction” on page 7.

Standard SFP serial ID interface. The standard SFP serial ID interface (the memory

map for which is in Table 11, “Memory Map – 2-Wire Address Range Descriptions” on

page 19) provides access to identification information using the 8-bit address

1010000X (A0h). The serial identification information describes information such as the

following for the TXN21125 4G Optical Transceiver: capabilities, standard interfaces,

and manufacturer information.

Digital diagnostic monitoring interface. The digital diagnostic monitor interface

(the memory map for which is in Table 11, “Memory Map – 2-Wire Address Range

Descriptions” on page 19) is an extension of the standard serial ID interface. This

interface, which uses the 8-bit address 1010001X (A2h) reserved for optical

transceivers, allows real-time access to device-operating parameters while leaving

unchanged the original serial ID memory map A0h. The digital diagnostic monitoring

interface is backward compatible with both the GBIC specification and the SFP MSA.

For details on the 2-wire addresses A0h and A2h, refer to the SFF-8472 document

referenced in Section 1.0, “Introduction” on page 7.

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

6.2

General Memory Map Descriptions

Table 11 lists descriptions of address ranges for the serial ID memory map.

• The 2-wire address A0h contains serial ID information defined by the SFP MSA.

• The 2-wire address A2h contains data related to the digital diagnostics, defined by

the SFF-8472 document referenced in Section 1.0, “Introduction” on page 7.

Table 11.

Memory Map – 2-Wire Address Range Descriptions

2-Wire Address 1010000X (A0h)

2-Wire Address 1010001X (A2h)

Address

Range

Address Range Description

(Standard Serial ID Information)

Address

Range

Address Range Description

(Digital Diagnostics Information)

Alarm and Warning (40 bytes)

For details, see Table 12, “Alarm and Warning

Fields – 2-Wire Address 1010001X (0XA2),

Addresses 0-95” on page 20.

0-39

0-95

Serial ID Defined SFP MSA (96 bytes)

Vendor Specific / Calibration Constants

(56 bytes)

For details, see Table 12, “Alarm and Warning

Fields – 2-Wire Address 1010001X (0XA2),

Addresses 0-95” on page 20.

40-95

Real Time Digital Diagnostics Interface

(24 bytes)

For details, see the following:

•

Table 13, “A/D Fields – 2-Wire Address

1010001X (0XA2), Addresses 96-109” on

page 22

Table 14, “A/D Status/Control Bits – 2-

Wire Address 1010001X (0XA2), Address

110” on page 22

Table 15, “Alarm Flags Address – 2-Wire

Address 1010001X (0XA2), Addresses

112 and 113” on page 23

96-119

96-127

Vendor Specific (32 bytes)

Table 16, “Warning Flags Address – 2-

Wire Address 1010001X (0XA2)

Addresses 116 and 117” on page 24

120-127

128-247

248-255

Vendor Specific (8 bytes)

User Writable EEPROM (120 bytes)

For details, see the following:

•

Table 17, “Masking Alarm and Warning

Flags Address– 2-Wire Address A2h,

Address 136” on page 25

128-255

Reserved in SFP MSA (128 bytes)

Vendor Specific (8 bytes)

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

6.3

Alarm and Warning Fields for 2-Wire Interface Address

A2h

Table 12 is a more detailed memory map of the 2-wire interface address A2h for the

Alarm and Warning fields, address range 0 to 95.

Table 12.

Alarm and Warning Fields – 2-Wire Address 1010001X (0XA2), Addresses

0-95 (Sheet 1 of 2)

Field

Data

Size

Field Name

Field Description

Address

(Bytes)

Base ID Fields

0

1

Temperature High Alarm

MSB at low address

1

LSB

2

Temperature Low Alarm

3

LSB

4

Temperature High Warning

5

LSB

6

Temperature Low Warning

7

LSB

8

Vcc High Alarm

9

LSB

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Vcc Low Alarm

LSB

Vcc High Warning

LSB

Vcc Low Warning

LSB

Bias High Alarm

LSB

Bias Low Alarm

LSB

Tx Bias High Warning

LSB

Tx Bias Low Warning

LSB

Tx Power High Alarm

LSB

Tx Power Low Alarm

LSB

Tx Power High Warning

LSB

Tx Power Low Warning

LSB

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Table 12.

Alarm and Warning Fields – 2-Wire Address 1010001X (0XA2), Addresses

0-95 (Sheet 2 of 2)

Field

Data

Size

Field Name

Field Description

Address

(Bytes)

32

33

1

Rx Power High Alarm

MSB at low address

–

LSB

34

1

Rx Power Low Alarm

LSB

35

1

36

1

Rx Power High Warning

LSB

37

1

38

1

Rx Power Low Warning

LSB

39

1

40-55

56-95

16

40

Vendor-Specific

Calibration Constants

–

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

6.4

A/D Fields for 2-Wire Interface Address A2h

Table 13 lists descriptions of the analog-to-digital (A/D) fields for the 2-wire interface

address A2h, data addresses 96 to 109.

Table 13.

A/D Fields – 2-Wire Address 1010001X (0XA2), Addresses 96-109

Field

Data

Size

Field Name

Field Description

Address

(Bytes)

Signed 2's complement integer ºC (-40 ºC to +125 ºC).

Based on internal temperature measurement.

96

1

Temperature MSB

97

98

1

Temperature LSB

Vcc MSB

Fractional part of temperature (count/256)

Internally measured supply voltage in transceiver.

Voltage reading is full 16-bit value × 100 µVolt, which

99

100

1

4

Vcc LSB

yields a range of 0 to 6.55 V.

TX Bias MSB

TX Bias LSB

TX power MSB

TX power LSB

RX Power MSB

RX Power LSB

Reserved

Measured Laser Bias Current is in mA.

Bias current is full 16-bit value × 2 µA, which yields a

range of 0 to +131 mA.

101

102

Measured TX output power is in mW.

TX power is full 16-bit value × 0.1 µW, which yields a

range of -40 to +8.2 dBm.

103

104

Measured RX input power is in mW.

RX power is full 16-bit value × 0.1 µW, which yields a

range of -40 to +8.2 dBm.

105

106-109

–

Table 14 lists descriptions of the A/D status/control bits for the 2-wire interface address

A2h, data address 110.

Table 14.

A/D Status/Control Bits – 2-Wire Address 1010001X (0XA2), Address 110

Data

Address

Bit

Bit Name

Bit Description

110

7

6

TX Disable State

Soft TX Disable

Soft TX Disable status

Read/write bit that allows software disable of laser.

Writing ‘1’disables laser.

110

5

4

3

2

1

Reserved

–

RX Rate Select State

Soft RX Rate Select

Tx Fault

Not implemented

Digital State of Tx Fault Output

Digital State of LOS

LOS

Indicates the TXN21125 4G Optical Transceiver has

achieved power up and is ready.

Note: Ready = ‘0’.

110

0

Data Ready Bar

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

6.5

Alarm and Warning Flags Fields for 2-Wire Interface

Address A2h

Table 15 lists descriptions of the Alarm Flag bits for the 2-wire interface address A2h,

data address 112 and 113.

Table 15.

Alarm Flags Address – 2-Wire Address 1010001X (0XA2), Addresses 112 and

113

Data

Address

Bit

Bit Name

Bit Description

112

113

7

6

5

4

3

2

1

0

7

6

5

4

3

2

1

0

Temperature High Alarm

Temperature Low Alarm

Vcc High Alarm

Vcc Low Alarm

TX Bias High Alarm

TX Bias Low Alarm

TX Power High Alarm

TX Power Low Alarm

RX Power High Alarm

RX Power Low Alarm

Reserved

Set when internal temperature exceeds high alarm level.

Set when internal temperature is below low alarm level.

Set when internal supply voltage exceeds high alarm level.

Set when internal supply voltage is below low alarm level.

Set when TX Bias current exceeds high alarm level.

Set when TX Bias current is below low alarm level.

Set when TX output power exceeds high alarm level.

Set when TX output power is below low alarm level.

Set when Received Power exceeds high alarm level.

Set when Received Power is below low alarm level.

–

Reserved

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Table 16 lists descriptions of the Warning Flag bits for the 2-wire interface address A2h,

data address 116 and 117.

Table 16.

Warning Flags Address – 2-Wire Address 1010001X (0XA2) Addresses 116

and 117

Data

Address

Bit

Bit Name

Bit Description

116

7

6

Temperature High Warning Set when internal temperature exceeds high warning level.

Temperature Low Warning

Vcc High Warning

Set when internal temperature is below low warning level.

Set when internal supply voltage exceeds high warning

level.

116

5

116

117

4

3

2

1

0

7

6

5

4

3

2

1

0

Vcc Low Warning

TX Bias High Warning

TX Bias Low Warning

TX Power High Warning

TX Power Low Warning

RX Power High Warning

RX Power Low Warning

Reserved

Set when internal supply voltage is below low warning level.

Set when TX Bias current exceeds high warning level.

Set when TX Bias current is below low warning level.

Set when TX output power exceeds high warning level.

Set when TX output power is below low warning level.

Set when Received Power exceeds high warning level.

Set when Received Power is below low warning level.

–

Reserved

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

6.6

Masking Alarm and Warning Flag Fields for 2-Wire

Interface Address A2h

Table 17 lists descriptions of the Masking Alarm and Warning Flag bits for the 2-wire

interface address A2h, data address 136.

Table 17.

Masking Alarm and Warning Flags Address– 2-Wire Address A2h, Address 136

Data

Address

Bit

Bit Name

Bit Description

Masking bit for Temp High/Low Alarm/Warning

interrupt source.

0 = Enable

1 = Disable

136

7

Temp High/Low Alarm/Warning

Masking bit for Vcc High/Low Alarm/Warning

interrupt source.

0 = Enable

1 = Disable

136

6

5

4

3

Vcc High/Low Alarm/Warning

Masking bit for TX Bias High/Low Alarm/Warning

interrupt source.

0 = Enable

1 = Disable

TX Bias High/Low Alarm/Warning

TX Power High/Low Alarm/Warning

RX Power High/Low Alarm/Warning

Masking bit for TX Power High/Low Alarm/Warning

interrupt source.

0 = Enable

1 = Disable

Masking bit for RX Power High/Low Alarm/Warning

interrupt source.

0 = Enable

1 = Disable

136

2

1

0

Reserved

–

136

Note:

•

To configure the masking bits at data address location 136 (88h), first set byte 127 (7Fh) of A2h to the

value 03h, and then program data address 136 (88h) bits 7 to 3 as needed. (Each of the address 136 bits

7:3 is used to mask out all high/low Alarm and high/low Warning flags.)

•

By default, all Alarm and Warning flags bits are set to ‘0’ (masked out).

To unmask an Alarm/Warning flag for any of bits 7:3, use setting ‘1’.

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

7.0

Mechanical Specifications

Figure 4 shows the TXN21125 4G Optical Transceiver mechanical specifications. The

dimensions comply with the SFP MSA.

Note:

Aqueous wash is not applicable for the TXN21125 4G Optical Transceiver.

Figure 4. Mechanical Specifications

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

8.0

Regulatory Compliance

This section discusses the following topics:

• Section 8.1, “Electromagnetic Compatibility Compliance” on page 27

• Section 8.2, “Safety Compliance” on page 28

• Section 8.3, “Lead-Free Conformance” on page 29

• Section 8.4, “Compliance with Restriction of Hazardous Substances” on page 29

• Section 8.5, “Management Methods on Control of Pollution from Electronic

Information Products (a.k.a. China RoHS)” on page 30

• Section 8.6, “Product Certification Markings and Compliance Statements” on

page 31

8.1

Electromagnetic Compatibility Compliance

Table 18 lists emissions and immunity regulations with which the TXN21125 4G Optical

Transceiver complies when tested in a representative chassis.

Table 18.Regulatory Compatibility Compliance

Regulatory Requirement

Applicable Standards

Performance

•

FCC rules, Part 15,

subpart B

EN 55022

Meets Class B limits with a minimum

6 dB margin

Electro-Magnetic 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).

Note: Actual ESD may vary,

depending on system

EN 61000-4-2

configuration.

10 V/m from 80 MHz to 1 GHz with

no degradation of performance or

loss of function

Radio Frequency Electro-Magnetic

field (Radiated immunity)

EN 61000-4-3,

Level A test criteria

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

8.2

Safety Compliance

Table 19 lists and describes the relevant safety regulations with which the TXN21125

4G Optical Transceiver complies.

Table 19.

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.

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

8.3

Lead-Free Conformance

The TXN21125 4G 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 TXN21125 4G Optical Transceiver is referred

to as a “Lead-free 2^ndLevel 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 20 lists various forms of the “Lead-Free 2^ndLevel Interconnect” marking for the

TXN21125 4G Optical Transceiver and accompanying collateral.

Table 20.

Lead-Free 2^nd-Level Interconnect Markings

Description

Marking

Lead-Free 2^ndLevel Interconnect:

The Lead-Free 2^ndLevel 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

Note: Any of the three symbols

shown may be used, as space

permits.

8.4

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 (an 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^®TXN21125 4G FC 1310 nm Optical Transceiver

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

8.5

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 21.

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.

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Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

8.6

Product Certification Markings and Compliance

Statements

Table 22 lists the TXN21125 4G Optical Transceiver product certification markings and

compliance statements.

Table 22.

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.

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Datasheet

31

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

9.0

Ordering Information

Table 23 lists ordering information for the TXN21125 4G Optical Transceiver.

Table 23.Ordering the Intel^®TXN21125 4G Optical Transceiver

MM

Number

Part Number

Description

4 Gbps Fibre Channel Single mode 4km SFP module

with digital diagnostics feature with RoHS 6.

TXN21125D000xxx¹

881112

1. The last three characters of the part number ("xxx") are used to designate customer-specific

customizations. The Intel standard part has "000" as the last three characters.

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

32

26-April-2007

Order Number: 311736, Revision: 004US

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

10.0

Acronyms

Table 24.

Acronyms

Acronym

Meaning

ASCII

BER

BR

American Standard Code for Information Interchange

Bit Error Rate

Bit Rate

CFR

Code of Federal Relations

Current Mode Logic

CML

EEPROM

EMI

Electrically Erasable Programmable Read Only Memory

Electro-Magnetic Interference

Electro-Static Discharge

ESD

EU

European Union

FC-PI

FCC

Fibre Channel – Physical Interfaces

Federal Communications Commission

Food and Drug Administration

Fabry Perot

FDA

FP

GBIC

Gbps

IEC

GigaBit Interface Converter

Gigabits per second

International Electrotechnical Commission

Institute of Electrical and Electronics Engineers

Loss of Signal

IEEE

LOS

MSA

OUI

Multisource Agreement

Organizationally Unique Identifier

Pseudo Random Bit Sequence

Restriction of Hazardous Substances

Serializer/Deserializer

PRBS

RoHS

SerDes

SFF

Small-Form Factor

SFP

Small-Form Factor Pluggable

Single-Mode Fiber

SMF

TTL

Transistor-Transistor Logic

Underwriter Laboratories

UL

§ §

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

26-April-2007

Order Number: 311736, Revision: 004

Datasheet

33

Intel^®TXN21125 4G FC 1310 nm SFP 4 km Optical Transceiver - SFP* MSA Compatible

Intel^®TXN21125 4G FC 1310 nm Optical Transceiver

Datasheet

34

26-April-2007

Order Number: 311736, Revision: 004US

厂商	型号	描述	页数
STMICROELECTRONICS	TXN05	晶闸管[ THYRISTORS ]	4 页
STMICROELECTRONICS	TXN0510	[ SILICON CONTROLLED RECTIFIER,50V V(DRM),10A I(T),TO-220 ]	1 页
STMICROELECTRONICS	TXN0512	高浪涌能力高通态电流高稳定性和可靠性[ HIGH SURGE CAPABILITY HIGH ON-STATE CURRENT HIGH STABILITY AND RELIABILITY ]	5 页
STMICROELECTRONICS	TXN0512/F5	[ 12A, 50V, SCR, TO-220, TO-220, 3 PIN ]	5 页
STMICROELECTRONICS	TXN054	晶闸管[ THYRISTORS ]	4 页
STMICROELECTRONICS	TXN056	[ SILICON CONTROLLED RECTIFIER,50V V(DRM),5A I(T),TO-220 ]	5 页
STMICROELECTRONICS	TXN058	晶闸管[ THYRISTORS ]	4 页
STMICROELECTRONICS	TXN058/F2	[ 8A, 50V, SCR, TO-220, TO-220, 3 PIN ]	5 页
STMICROELECTRONICS	TXN058G	可控硅整流器器[ Silicon controlled rectifiers ]	5 页
STMICROELECTRONICS	TXN058G/F5	[ 8A, 50V, SCR, TO-220, TO-220, 3 PIN ]	5 页