Telit Communications S p A LE920A4NA User Manual

LE920A4 Auto

HW User Guide

Doc#: 1VV0301261

Rev. 4.3 – 2017-12-07

LE920A4 HW User Guide Doc#: 1VV0301261

SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

NOTICE

While reasonable efforts have been made to assure the accuracy of this document, Telit assumes no liability resulting from any inaccuracies or omissions in this document, or from use of the information obtained herein. The information in this document has been carefully checked and is believed to be reliable. However, no responsibility is assumed for inaccuracies or omissions. Telit reserves the right to make changes to any products described herein and reserves the right to revise this document and to make changes from time to time in content hereof with no obligation to notify any person of revisions or changes. Telit does not assume any liability arising out of the application or use of any product, software, or circuit described herein; neither does it convey license under its patent rights or the rights of others.

It is possible that this publication may contain references to, or information about Telit products (machines and programs), programming, or services that are not announced in your country. Such references or information must not be construed to mean that Telit intends to announce such Telit products, programming, or services in your country.

COPYRIGHTS

This instruction manual and the Telit products described in this instruction manual may be, include or describe copyrighted Telit material, such as computer programs stored in semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit and its licensors certain exclusive rights for copyrighted material, including the exclusive right to copy, reproduce in any form, distribute and make derivative works of the copyrighted material. Accordingly, any copyrighted material of Telit and its licensors contained herein or in the Telit products described in this instruction manual may not be copied, reproduced, distributed, merged or modified in any manner without the express written permission of Telit. Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Telit, as arises by operation of law in the sale of a product.

COMPUTER SOFTWARE COPYRIGHTS

The Telit and 3rd Party supplied Software (SW) products described in this instruction manual may include copyrighted Telit and other 3rd Party supplied computer programs stored in semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit and other 3rd Party supplied SW certain exclusive rights for copyrighted computer programs, including the exclusive right to copy or reproduce in any form the copyrighted computer program. Accordingly, any copyrighted Telit or other 3rd Party supplied SW computer programs contained in the Telit products described in this instruction manual may not be copied (reverse engineered) or reproduced in any manner without the express written permission of Telit or the 3rd Party SW supplier. Furthermore, the purchase of Telit products shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents or patent applications of Telit or other 3rd Party supplied SW, except for the normal non-exclusive, royalty free license to use that arises by operation of law in the sale of a product.

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USAGE AND DISCLOSURE RESTRICTIONS

I. License Agreements

The software described in this document is the property of Telit and its licensors. It is furnished by express license agreement only and may be used only in accordance with the terms of such an agreement.

II. Copyrighted Materials

Software and documentation are copyrighted materials. Making unauthorized copies is prohibited by law. No part of the software or documentation may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language or computer language, in any form or by any means, without prior written permission of Telit

III. High Risk Materials

Components, units, or third-party products used in the product described herein are NOT fault-tolerant and are NOT designed, manufactured, or intended for use as on-line control equipment in the following hazardous environments requiring fail-safe controls: the operation of Nuclear Facilities, Aircraft Navigation or Aircraft Communication Systems, Air Traffic Control, Life Support, or Weapons Systems (High Risk Activities"). Telit and its supplier(s) specifically disclaim any expressed or implied warranty of fitness for such High Risk Activities.

IV. Trademarks

TELIT and the Stylized T Logo are registered in Trademark Office. All other product or service names are the property of their respective owners.

V. Third Party Rights

The software may include Third Party Right software. In this case you agree to comply with all terms and conditions imposed on you in respect of such separate software. In addition to Third Party Terms, the disclaimer of warranty and limitation of liability provisions in this License shall apply to the Third Party Right software.

TELIT HEREBY DISCLAIMS ANY AND ALL WARRANTIES EXPRESS OR IMPLIED FROM ANY THIRD PARTIES REGARDING ANY SEPARATE FILES, ANY THIRD PARTY MATERIALS INCLUDED IN THE SOFTWARE, ANY THIRD PARTY MATERIALS FROM WHICH THE SOFTWARE IS DERIVED (COLLECTIVELY “OTHER CODE”), AND THE USE OF ANY OR ALL THE OTHER CODE IN CONNECTION WITH THE SOFTWARE, INCLUDING (WITHOUT LIMITATION) ANY WARRANTIES OF SATISFACTORY QUALITY OR FITNESS FOR A PARTICULAR PURPOSE.

NO THIRD PARTY LICENSORS OF OTHER CODE SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND WHETHER MADE UNDER CONTRACT, TORT OR OTHER LEGAL THEORY, ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE OTHER CODE OR THE EXERCISE OF ANY RIGHTS GRANTED UNDER EITHER OR BOTH THIS LICENSE AND THE LEGAL TERMS APPLICABLE TO ANY SEPARATE FILES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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APPLICABILITY TABLE

This documentation applies to the following products:

Table 1: Applicability Table

Module Name Description

LE920A4-NA North America regional variant (AT&T, T-Mobile)

LE920A4-NV (*) North America regional variant (Verizon)

LE920A4-EU Europe regional variant

HE920A-EU (*) Non-LTE Europe variant

LE920A4-CN China variant

LE920A4-AP (*) APAC variant

(*) Variants which were not designed yet

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LE920A4 HW User Guide Doc#: 1VV0301261

CONTENTS

1. INTRODUCTION .............................................................................................9

Scope ............................................................................................................. 9

Audience......................................................................................................... 9

Contact Information, Support .......................................................................... 9

Text Conventions ...........................................................................................10

Related Documents .......................................................................................11

2. GENERAL PRODUCT DESCRIPTION ......................................................... 12

Overview........................................................................................................12

Applications ...................................................................................................12

General Functionality and Main Features.......................................................13

Block Diagram ...............................................................................................15

Environmental Requirements .........................................................................17

2.5.1. Temperature Range .......................................................................................17

2.5.2. RoHS Compliance .........................................................................................17

Frequency Bands ...........................................................................................18

2.6.1. RF Bands per Regional Variant .....................................................................18

2.6.2. Reference Table of RF Bands Characteristics ...............................................18

RF parameters ...............................................................................................21

2.7.1. Sensitivity ......................................................................................................21

2.7.2. Output power .................................................................................................21

Mechanical Dimensions .................................................................................22

Weight ...........................................................................................................22

3. MODULE CONNECTIONS ............................................................................ 23

Pin-out ...........................................................................................................23

Signals That Must Be Connected ...................................................................37

LE940A4 LGA Pads Layout ...........................................................................40

4. ELECTRICAL SPECIFICATIONS ................................................................. 41

Absolute Maximum Ratings – Not Operational ...............................................41

Recommended Operating Conditions ............................................................41

Logic Level Specifications ..............................................................................41

4.3.1. 1.8V Pads - Absolute Maximum Ratings ........................................................42

4.3.2. 1.8V Standard GPIOs ....................................................................................42

4.3.3. 1.8V SD Card Pads .......................................................................................43

4.3.4. 1.8V SIM Card Pads ......................................................................................43

4.3.5. Dual Voltage Pads - Absolute Maximum Ratings ...........................................44

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4.3.6. SD Card Pads @ 2.95V .................................................................................44

4.3.7. SIM Card Pads @2.95V.................................................................................44

5. HARDWARE COMMANDS ........................................................................... 46

Turning on the Module ...................................................................................46

Initialization and Activation State ...................................................................46

Turning off the Module ...................................................................................48

5.3.1. Shutdown by Software Command ..................................................................49

5.3.2. Hardware Shutdown ......................................................................................49

5.3.3. Unconditional Hardware Reset ......................................................................51

5.3.4. Unconditional Hardware Shutdown ................................................................52

6. POWER SUPPLY .......................................................................................... 54

Power Supply Requirements ..........................................................................54

General Design Rules ....................................................................................56

6.2.1. Electrical Design Guidelines ..........................................................................56

6.2.1.1. + 5V Input Source Power Supply Design Guidelines ......................................56

6.2.1.2. + 12V Input Source Power Supply Design Guidelines ....................................57

6.2.1.3. Battery Source Power Supply Design Guidelines ...........................................59

6.2.2. Thermal Design Guidelines ............................................................................59

6.2.3. Power Supply PCB Layout Guidelines ...........................................................60

7. ANTENNA(S) ................................................................................................ 62

GSM/WCDMA/TD-SCDMA/LTE Antenna Requirements ...............................62

GSM/WCDMA/TD-SCDMA/LTE Antenna – PCB Line Guidelines ..................63

GSM/WCDMA/TD-SCDMA/LTE Antenna – Installation Guidelines ................64

Antenna Diversity Requirements ....................................................................64

GPS/GNSS Antenna Requirements ...............................................................65

7.5.1. Combined GPS/GNSS Antenna .....................................................................65

7.5.2. Linear and Patch GPS/GNSS Antenna ..........................................................66

7.5.3. Front End Design Considerations ..................................................................66

7.5.4. GPS/GNSS Antenna – PCB Line Guidelines .................................................66

7.5.5. GPS/GNSS Antenna – Installation Guidelines ...............................................67

8. HARDWARE INTERFACES .......................................................................... 68

USB Port........................................................................................................69

8.1.1. USB OTG support ..........................................................................................70

HSIC Interface ...............................................................................................70

Ethernet Connectivity (optional) .....................................................................71

8.3.1. SGMII Interface..............................................................................................71

8.3.2. Ethernet Control Interface ..............................................................................71

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Serial Ports ....................................................................................................72

8.4.1. Modem Serial Port 1 ......................................................................................72

8.4.2. Modem Serial Port 2 ......................................................................................74

8.4.3. RS232 Level Translation ................................................................................75

Peripheral Ports .............................................................................................77

8.5.1. SPI – Serial Peripheral Interface ....................................................................77

8.5.2. I2C - Inter-integrated Circuit ...........................................................................78

8.5.3. SD/MMC Card Interface .................................................................................78

8.5.4. WiFi (SDIO) Control Interface ........................................................................80

Audio Interface ..............................................................................................81

8.6.1. Analog Audio .................................................................................................81

8.6.2. Analog Audio Characteristics .........................................................................82

8.6.2.1. Analog Inputs Characteristics ........................................................................82

8.6.2.2. Analog Output Characteristics .......................................................................84

8.6.3. Digital Audio ..................................................................................................85

8.6.3.1. Short Frame Timing Diagrams .......................................................................86

8.6.3.2. Long Frame Timing Diagrams ........................................................................88

General Purpose I/O ......................................................................................90

8.7.1. Using a GPIO Pad as Input ............................................................................91

8.7.2. Using a GPIO Pad as an Interrupt Source .....................................................92

8.7.3. Using a GPIO Pad as Output .........................................................................92

9. MISCELLANEOUS FUNCTIONS .................................................................. 93

Indication of Network Service Availability .......................................................93

RTC – Real Time Clock .................................................................................93

VAUX Power Output ......................................................................................93

ADC Converter ..............................................................................................95

9.4.1. Description .....................................................................................................95

9.4.2. Using ADC Converter ....................................................................................95

Using the Temperature Monitor Function .......................................................95

Fuel Gauge (optional) ....................................................................................95

GNSS Characteristics ....................................................................................97

10. MOUNTING THE MODULE ON YOUR BOARD ........................................... 98

General ..........................................................................................................98

Finishing & Dimensions .................................................................................98

Recommended Foot Print for the Application .................................................99

Stencil ............................................................................................................99

PCB Pad Design .......................................................................................... 100

Recommendations for PCB Pad Dimensions (mm) ...................................... 100

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Solder Paste ................................................................................................ 101

10.7.1. Solder Reflow .............................................................................................. 101

11. APPLICATION GUIDE ................................................................................ 103

Debug of the Module in Production .............................................................. 103

Bypass Capacitor on Power Supplies .......................................................... 104

SIM Interface ............................................................................................... 105

11.3.1. SIM Schematic Example .............................................................................. 105

EMC Recommendations .............................................................................. 105

Download and Debug Port ........................................................................... 106

11.5.1. Fast Boot Mode ........................................................................................... 106

11.5.2. Recovery Boot Mode ................................................................................... 106

Antenna Detection ....................................................................................... 107

12. PACKING SYSTEM .................................................................................... 108

Tray ............................................................................................................. 108

Tape & Reel ................................................................................................. 111

Moisture Sensitivity ...................................................................................... 112

13. SAFETY RECOMMENDATIONS................................................................. 113

14. CONFORMITY ASSESSMENT ISSUES ..................................................... 114

FCC/ISED Regulatory notices ...................................................................... 114

15. ACRONYMS ................................................................................................ 116

16. DOCUMENT HISTORY ............................................................................... 119

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LE920A4 HW User Guide Introduction Doc#: 1VV0301261 Scope

1. Introduction

Scope

This document introduces the Telit LE920A4 module and presents possible and recommended hardware solutions for developing a product based on this module. All the features and solutions detailed in this document are applicable to all module variants, where “module” refers to the variants listed in the applicability table.

If a specific feature is applicable to a specific product only, it will be clearly marked.

NOTE:

Module refers to all modules listed in the Applicability Table.

This document takes into account all the basic functions of a wireless module; a valid hardware solution is suggested for each function, and incorrect solutions and common errors to be avoided are pointed out.

Obviously, this document cannot embrace every hardware solution or every product that can be designed. Obviously, avoiding invalid solutions must be considered mandatory. Where the suggested hardware configurations need not be considered mandatory, the information given should be used as a guide and a starting point for properly developing your product with the Telit module.

NOTE:

The integration of the module within a user application must be done according to the design rules described in this manual.

Audience

This document is intended for Telit customers, especially system integrators, about to implement their applications using the Telit module.

Contact Information, Support

For general contact, technical support services, technical questions and report documentation errors, contact Telit Technical Support at:

• TS-EMEA@telit.com

• TS-AMERICAS@telit.com

• TS-APAC@telit.com

• TS-SRD@telit.com

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LE920A4 HW User Guide Introduction Doc#: 1VV0301261 Text Conventions

Alternatively, use:

http://www.telit.com/support

For detailed information about where you can buy the Telit modules or for recommendations on accessories and components visit:

http://www.telit.com

To register for product news and announcements or for product questions contact Telit’s Technical Support Center (TTSC).

Our aim is to make this guide as helpful as possible. Keep us informed of your comments and suggestions for improvements.

Telit appreciates feedback from the users of our information.

Text Conventions

The following conventions are used to emphasize specific types of information:

DANGER:

Danger – This information MUST be followed or catastrophic equipment failure or bodily injury may occur.

WARNING:

Caution or Warning – Alerts the user to important points about integrating the module, if these points are not followed, the module and end user equipment may fail or malfunction.

NOTE:

Tip or Information – Provides advice and suggestions that may be useful when integrating the module.

All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

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LE920A4 HW User Guide Introduction Doc#: 1VV0301261 Related Documents

Related Documents

Table 2: Related Documents

Document Title Document Number

Ref 1: LE920A4 AT Command User Guide 80490ST10778A

Ref 2: LE920A4 Software Guide 1VV0301332

Ref 3: Generic EVB HW User Guide 1VV0301249

Ref 4: LE920A4 Interface Board HW User Guide 1VV0301248

Ref 5: Digital Voice Interface_Application_Note 80000NT11246A

Ref 6: Telit_LE920A4_LE910Cx_WiFi_Interface_Application_Note_r1

Ref 7: Antenna Detection Application Note 80000NT10002A

Ref 8: High-Speed Inter-Chip USB Electrical Specification, version 1.0

(a supplement to the USB 2.0 specification, Section 3.8.2)

Ref 9: ETH_Expansion_board_Application Note

80490NT11511A

80490NT11622A

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LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Overview

2. General Product Description

Overview

The LE920A4 module is Telit’s platform for automotive telematics on-board units (OBU's) for applications, such as automotive telematics and eCall, based on the following technologies:

• 4G cellular for voice and data communication

• GNSS (optional) - GPS, GLONASS, BeiDou, Galileo, QZSS, for positioning

service

• Embedded security

o ARM Trust Zone services (optional)

• Designed for automotive markets1 quality needs

In its most basic use case, the module can be applied as a wireless communication frontend for telematics products, offering GNSS and mobile communication features to an external host CPU through its rich interfaces.

The module can further support customer software applications and security features. The module provides a software application development environment with sufficient system resources for creating rich on-board applications. Thanks to a dedicated application processor and embedded security resources, product developers and manufacturers can create products that guarantee fraud prevention and tamper evidence without extra effort for additional security precautions.

The module can be self-sufficient and serve as a fully integrated solution for applications, such as location-based cellular telematics, navigation, road pricing and eCall. In such a case, the customer would simply complement the module with a power supply, speaker amplifier, microphone, antennas, and an HMI (if applicable).

The module is available in hardware variants as listed in Table 1: Applicability Table. The designated RF band sets per each variant are detailed in Section 2.6, Frequency Bands.

Applications

The module can be used for telematics applications where tamper-resistance, confidentiality, integrity, and authenticity of end-user information are required, for example:

• Emergency call

• Telematics services

• Road pricing

• Pay-as-you-drive insurance

• Stolen vehicles tracking

• Internet connectivity

In accordance with Telit’s Robustness Validation, using AEC-Q100-defined qualification tests

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LE920A4 HW User Guide General Product Description

•

Up to 48

kHz sample rate, 16 bit words

•

Data rates up to 4 MHz

4 Gbit DDR.

Doc#: 1VV0301261 General Functionality and Main Features

General Functionality and Main Features

The LE920A4 family of automotive cellular modules features an advanced LTE and multiRAT modem together with a powerful on-chip application processor and a rich set of interfaces.

The major functions and features are listed below:

Table 3: Main Features

Function Features

Modem

Audio subsystem

Two USIM ports – dual voltage

• Multi-RAT cellular modem for voice and data communication

o LTE FDD/TDD Cat4 (150/50 Mbps DL/UL) o GSM/GPRS/EDGE o WCDMA up to DC HSPA+, Rel.9 o TD-SCDMA (China variant only)

• Support for European eCall , US E911, and ERA Glonass

• Support for SIM profile switching

• Regional variants with optimal choice of RF bands for

worldwide coverage of countries and MNOs

• State-of-the-art GNSS solution with

GPS/GLONASS/BeiDou/Galileo/QZSS receiver

• Embedded analog codec with two microphone inputs

• Embedded analog codec with one stereo or two mono

outputs

• PCM/I2S digital audio interface

• Class B and Class C support

• Hot-swap support

Application processor

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Application processor to run customer application code

• 32 bit ARM Cortex-A7 up to 1.2 GHz running the Linux

operating system

• Flash + DDR are large enough to allow for customer’s own

software applications

• Default memory configuration is 4 Gb (512 MB) Flash + 2 Gb

(256 MB) RAM

• Other memory configurations can be supported upon request,

for example: 2 Gbit Flash + 2 Gbit DDR or 4 Gbit Flash +

LE920A4 HW User Guide General Product Description

•

Antenna ports

Doc#: 1VV0301261 General Functionality and Main Features

Function Features

Interfaces Rich set of interfaces, including:

• SD/MMC Card Interface supporting SD3.0 standard

• SDIO for external WiFi transceiver supporting SDIO3.0

standard

• SGMII for external Ethernet transceiver (optional)

o Compliant with IEEE802.3 o Full duplex operation at 1 Gbps o Half/full duplex operation at 10/100 Mbps o Support for VLAN tagging o Support for IEEE1588, PTP (Precision Time Protocol)

• USB2.0 – USB port is typically used for:

o Flashing of firmware and module configuration o Production testing o Accessing the Application Processor’s file system o AT command access o High-speed WWAN access to external host o Diagnostic monitoring and debugging o Communication between Java application environment

and an external host CPU

o NMEA data to an external host CPU

• HSIC

o High-speed 480 Mbps (240 MHz DDR) USB transfers are

100% host driver compatible with traditional USB cable connected topologies

o Bidirectional data strobe signal (STROBE) o Bidirectional data signal (DATA) o No power consumption unless a transfer is in progress o Maximum trace length 10 cm o Signals driven at 1.2V standard LVCMOS levels

• Peripheral Ports – SPI, I2C, UART

• GPIOs

• Analog audio I/F

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LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Block Diagram

Function Features

Major software features

• Advanced security features

o Boot integrity of firmware up to customer applications o Disable/secure re-enable of debug o Embedded security

• FOTA (optional)

• Telit Unified AT command set

• Java VM (optional) with the following features:

o Rich and standardized application environment for

customer applications

o State-of-the-art and high performance Java SE8

embedded Virtual Machine

o Oracle Java SE8 Embedded, Compact Profile 1 o JIT-enabled

Form factor Form factor (40x34mm), accommodating the multiple RF bands in

each region variant

Environment and quality requirements

The entire module is designed and qualified by Telit for satisfying the environment and quality requirements for use in automotive applications2.

Single supply

The module generates all its internal supply voltages.

module RTC RTC is maintained as long as VBATT is supplied Operating

temperature

Range -40 °C to +85 °C (conditions as defined in Section 2.5.1,Temperature Range)

Block Diagram

Figure 1 shows an overview of the internal architecture of the module. It includes the following sub-functions:

• Application processor, Modem subsystem and Location processing with their

external interfaces. These three functions are contained in a single SOC.

• RF front end, including antenna diagnosis circuitry

• Analog Audio codec for attaching external speaker amplifier and microphone

• Rich IO interfaces. Depending on which of the module’s software features are

enabled, some of its interfaces that are exported through multiplexing may be used internally and thus may not be usable by the application.

• PMIC with the RTC function inside

In accordance with Telit’s Robustness Validation, using AEC-Q100-defined qualification tests

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LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Block Diagram

Figure 1: High-level Block Diagram

GNSS_Sync

GNSS Antennna

ANT

DIAG

Location

JTAG

HSICI2C

Memories

Modem

Application

Processor

UART

GPIO

USB2.0SGMIISPI

Frontend

2xSDIO

RTC

PMIC

Audio

CODEC

ANT

DIAG

Ear / Line out

Microphone

SIM PCM In/out

VBATT_PA

Cellular Antenna 1

Cellular Antenna 2

VBATT ADC

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LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Environmental Requirements

Environmental Requirements

2.5.1. Temperature Range

Table 4: Temperature Range

Operating temperature range

Storage and nonoperating temperature range

-20 ~ +55°C This range is defined by 3GPP (the global standard for

wireless mobile communication). Telit guarantees its modules to comply with all the 3GPP requirements and to have full functionality of the module with in this range.

-40 ~ +85°C Telit guarantees full functionality within this range as well.

However, there may possibly be some performance deviations in this extended range relative to 3GPP requirements, which means that some RF parameters may deviate from the 3GPP specification in the order of a few dB. For example: receiver sensitivity or maximum output power may be slightly degraded.

Even so, all the functionalities, such as call connection, SMS, USB communication, UART activation etc., will be maintained, and the effect of such degradations will not lead to malfunction.

–40°C ~ +95°C eCall must be functional (until the module is broken)

–40°C ~ +105°C

2.5.2. RoHS Compliance

As a part of Telit corporate policy of environmental protection, the module complies with the RoHS (Restriction of Hazardous Substances) directive of the European Union (EU directive 2011/65/EU).

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LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Frequency Bands

Frequency Bands

The operating frequencies in GSM850, EGSM900, DCS1800, PCS1900, WCDMA & LTE modes conform to the 3GPP specifications.

2.6.1. RF Bands per Regional Variant

Table 5 summarizes of all region variants within the module family, showing the supported band sets in each variant.

Table 5: RF Bands per Regional Variant

Region Variant

LE920A4-NA 2, 4, 5, 7, 12 - 2, 4, 5 - 2, 5 LE920A4-NV

(TBD)

LE920A4-EU 1, 3, 5(*), 7, 8, 20, 28(*) - 1, 3, 5(*), 8 - 3, 8 HE920A-EU

(Non-LTE,

TBD)

LE920A4-CN 1, 3, 5, 8, 26 38, 39, 40, 41M 1, 5, 8 34, 39 3, 8 LE920A4-AP

(TBD)

2, 4, 5, 7(*), 13 - 2, 5 - -

- - 1, 3, 5, 8 - 2, 3, 5,

1, 3, 5, 7, 8, 19, 21, 26, 28

LTE FDD LTE TDD HSPA+

- 1, 3, 5, 6, 8, 19

TD-

SCDMA

- 2, 3, 5, 8

NOTE:

(*) Optional bands with a different schedule than the standard configuration,

can be removed if not required Band 41M for China: 2,555-2,655 MHz

2.6.2. Reference Table of RF Bands Characteristics

Table 6: RF Bands Characteristics

Mode

Freq. Tx

(MHz)

PCS 1900 1850.2 ~

1909.8 DCS 1800 1710 ~ 1785 1805 ~ 1880 512 ~ 885 95 MHz

GSM 850 824.2 ~ 848.8 869.2 ~ 893.8 128 ~ 251 45 MHz

EGSM 900 890 ~ 915 935 ~ 960 0 ~ 124 45 MHz

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Freq. Rx

(MHz)

1930.2 ~

1989.8

Channels

Tx-Rx

Offset

512 ~ 810 80 MHz

LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Frequency Bands

Mode

Freq. Tx

(MHz)

Freq. Rx

(MHz)

Channels

880 ~ 890 925 ~ 935 975 ~ 1023 45 MHz

WCDMA 2100 – B1 1920 ~ 1980 2110 ~ 2170 Tx: 9612 ~ 9888

Rx: 10562 ~ 10838

WCDMA 1900 – B2 1850 ~ 1910 1930 ~ 1990 Tx: 9262 ~ 9538

Rx: 9662 ~ 9938

WCDMA 1800 – B3 1710 ~ 1785 1805 ~ 1880 Tx: 937 ~ 1288

Rx: 1162 ~ 1513

WCDMA AWS – B4 1710 ~ 1755 2110 ~ 2155 Tx: 1312 ~ 1513

Rx: 1537 ~ 1738

WCDMA 850 – B5 824 ~ 849 869 ~ 894 Tx: 4132 ~ 4233

Rx: 4357 ~ 4458

Tx-Rx

Offset

190 MHz

80 MHz

95 MHz

400 MHz

45 MHz

WCDMA 900 – B8 880 ~ 915 925 ~ 960 Tx: 2712 ~ 2863

Rx: 2937 ~ 3088

WCDMA 1800 – B9 1750 ~

1784.8

1845 ~ 1879.8 Tx: 8762 ~ 8912

Rx: 9237 ~ 9387

WCDMA 800 – B19 830 ~ 845 875 ~ 890 Tx: 312 ~ 363

Rx: 712 ~ 763

TDSCDMA 2000 – B34

TDSCDMA 1900 – B39

2010 ~ 2025 2010 ~ 2025 Tx: 10054 ~ 10121

Rx: 10054 ~ 10121

1880 ~ 1920 1880 ~ 1920 Tx: 9404 ~ 9596

Rx: 9404 ~ 9596

LTE 2100 – B1 1920 ~ 1980 2110 ~ 2170 Tx: 18000 ~ 18599

Rx: 0 ~ 599

LTE 1900 – B2 1850 ~ 1910 1930 ~ 1990 Tx: 18600 ~ 19199

45 MHz

95 MHz

45 MHz

0 MHz

190 MHz

80 MHz

Rx: 600 ~ 1199

LTE 1800 – B3 1710 ~ 1785 1805 ~ 1880 Tx: 19200 ~ 19949

95 MHz

Rx: 1200 ~ 1949

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LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Frequency Bands

Mode

Freq. Tx

(MHz)

Freq. Rx

(MHz)

Channels

LTE AWS – B4 1710 ~ 1755 2110 ~ 2155 Tx: 19950 ~ 20399

Rx: 1950 ~ 2399

LTE 850 – B5 824 ~ 849 869 ~ 894 Tx: 20400 ~ 20649

Rx: 2400 ~ 2649

LTE 2600 – B7 2500 ~ 2570 2620 ~ 2690 Tx: 20750 ~ 21449

Rx: 2750 ~ 3449

LTE 900 – B8 880 ~ 915 925 ~ 960 Tx: 21450 ~ 21799

Rx: 3450 ~ 3799

LTE 1800 – B9 1749.9 ~

1784.9

1844.9 ~

1879.9

Tx: 21800 ~ 2149 Rx: 3800 ~ 4149

LTE AWS+ – B10 1710 ~ 1770 2110 ~ 2170 Tx: 22150 ~ 22749

Tx-Rx

Offset

400 MHz

45 MHz

120 MHz

45 MHz

95 MHz

400 MHz

Rx: 4150 ~ 4749

LTE 700a – B12 699 ~ 716 729 ~ 746 Tx : 23010 ~ 23179

Rx : 5010 ~ 5179

LTE 700c – B13 777 ~ 787 746 ~ 756 Tx : 27210 ~ 27659

Rx : 9210 ~ 9659

LTE 700b – B17 704 ~ 716 734 ~ 746 Tx: 23730 ~ 23849

Rx: 5730 ~ 5849

LTE 800 – B19 830 ~ 845 875 ~ 890 Tx: 24000 ~ 24149

Rx: 6000 ~ 6149

LTE 800 – B20 832 ~ 862 791 ~ 821 Tx: 24150 ~ 24449

Rx: 6150 ~ 6449

LTE 1500 – B21 1447.9 ~

1462.9

1495.9 ~

1510.9

Tx: 24450 ~ 24599 Rx: 6450 ~ 6599

30 MHz

-31 MHz

30 MHz

45 MHz

-41 MHz

48 MHz

LTE 850+ – B26 814 ~ 849 859 ~ 894 Tx: 26690 ~ 27039

45 MHz

Rx: 8690 ~ 9039

Rev. 4.3 Page 20 of 123 2017-12-07

LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 RF parameters

Mode

LTE 700 – B28 703 ~ 748 758 ~ 803 Tx : 27210 ~ 27659

LTE TDD 2600 – B38

LTE TDD 1900 – B39

LTE TDD 2300 – B40

LTE TDD 2500 – B41M

Freq. Tx

(MHz)

2570 ~ 2620 2570 ~ 2620 Tx: 37750 ~ 38250

1880 ~ 1920 1880 ~ 1920 Tx: 38250 ~ 38650

2300 ~ 2400 2300 ~ 2400 Tx: 38650 ~ 39650

2555 ~ 2655 2555 ~ 2655 Tx: 40265 ~ 41215

Freq. Rx

(MHz)

Channels

Rx : 9210 ~ 9659

Rx: 37750 ~ 38250

Rx: 38250 ~ 38650

Rx: 38650 ~ 39650

Rx: 40265 ~ 41215

RF parameters

Tx-Rx

Offset

45 MHz

0 MHz

2.7.1. Sensitivity

The module’s maximum sensitivity levels are as follows:

• -108 dBm @ 2G

• -113 dBm @ 3G

• -102 dBm @ 4G FDD (BW=5 MHz)

2.7.2. Output power

LE920A4 typical values for Max output level are as follow:

• 2G:

- LB: 33dBm

- HB: 30dBm

• 3G/TD-SCDMA: 24dBm

• 4G (FDD & TDD):23dBm @1RB.

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LE920A4 HW User Guide General Product Description Doc#: 1VV0301261 Mechanical Dimensions

Mechanical Dimensions

The module’s overall dimensions are as follows:

• Length: 34 mm, +/- 0.15 mm tolerance

• Width: 40 mm, +/- 0.15 mm tolerance

• Thickness: 2.9 mm, +/- 0.15 mm tolerance

NOTE:

A typical label thickness of 0.11 mm should be considered in addition to the module thickness

Weight

The nominal weight of the module is 9.0 gram.

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LE920A4 HW User Guide Module Connections Doc#: 1VV0301261 Pin-out

3. Module Connections

Pin-out

Table 7: Pin-out

PAD Signal I/O Function Type Comment

USB HS 2.0 Communication Port

D19 USB_D+ I/O USB differential data(+) F19 USB_D- I/O USB differential data(-) A18 USB_VBUS AI Power sense for the internal USB

transceiver

B19 USB_ID AI USB ID for supporting USB2.0

OTG

Asynchronous UART

AH19 C103/TXD I Serial data input (TXD) from DTE 1.8V AF19 C104/RXD O Serial data output to DTE 1.8V AA18 C105/RTS I

AK19 C106/CTS O Output for Clear To Send signal

AG18 C107/DSR O Output for Data Set Ready (DSR)

AC18 C108/DTR I Input for Data Terminal Ready

AE18 C109/DCD O Output for Data Carrier Detect

Input for Request To Send signal (RTS) from DTE

(CTS) to DTE

to DTE

(DTR) from DTE

(DCD) to DTE

Power

1.8V

1.8V Alternate Fn

GPIO_32

GPIO_34

GPIO_33

AJ18 C125/RING O

Asynchronous Auxiliary UART

AB19 TX_AUX O Auxiliary UART (Tx Data to DTE) 1.8V AD19 RX_AUX I Auxiliary UART (Rx Data from

SPI – Serial Peripheral Interface

P19 SPI_CLK O SPI clock output 1.8V

M19 SPI_MISO I

Output for Ring Indication (RI) to DTE

DTE)

SPI data Master Input Slave Output

1.8V

Alternate Fn GPIO_31

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PAD Signal I/O Function Type Comment

K19 SPI_MOSI O

N18 SPI_CS O SPI chip select output 1.8V

SD/MMC Card Interface

AH17

AD17 SD/MMC_CLK O SD card clock 1.8/2.95V

Y17

AF17

AB17

W17

U17 SD/MMC_CD I SD card detect input 1.8V Active Low

SD/MMC_CM D

SD/MMC_DAT A0

SD/MMC_DAT A1

SD/MMC_DAT A2

SD/MMC_DAT A3

SPI data Master Output Slave Input

I/O SD command 1.8/2.95V

I/O SD Serial Data 0 1.8/2.95V

I/O SD Serial Data 1 1.8/2.95V

I/O SD Serial Data 2 1.8/2.95V

I/O SD Serial Data 3 1.8/2.95V

1.8V

S17 VMMC -

WiFi (SDIO) Interface

AB3

AM3 WiFi_SD_CLK O WiFi SD clock 1.8V

AD3

AF3

AH3

AK3

Y3 WiFi_SDRST O WiFi Reset / Power enable control 1.8V Active Low

AA4

WiFi_SD_CM D

WiFi_SD_DAT A0

WiFi_SD_DAT A1

WiFi_SD_DAT A2

WiFi_SD_DAT A3

WLAN_SLEEP _CLK

Power supply for MMC card pullup resistors

I/O WiFi SD command 1.8V

I/O WiFi SD Serial Data 0 1.8V

I/O WiFi SD Serial Data 1 1.8V

I/O WiFi SD Serial Data 2 1.8V

I/O WiFi SD Serial Data 3 1.8V

O WiFi Sleep clock output 1.8V

1.8/2.95V

X4 RFCLK2_QCA O WiFi low-noise RF clock output 1.8V

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PAD Signal I/O Function Type Comment

LTE-WiFi Coexistence

AS3 WCI_TX O

AT2 WCI_RX

SIM Card Interface 1

A10 SIMCLK1 O External SIM 1 signal – Clock 1.8/2.85V B11 SIMRST1 O External SIM 1 signal – Reset 1.8/2.85V B9 SIMIO1 I/O External SIM 1 signal - Data I/O 1.8/2.85V

B7 SIMIN1 I External SIM1 signal - Presence 1.8V Active low A8 SIMVCC1 - External SIM1 signal – power

E8 Reserved for

ESIM_RST

SIM Card Interface 2

Wireless coexistence interface TXD

Wireless coexistence interface

RXD

supply for SIM1

I Reserved for eSIM signal – Reset 1.8/2.85V Reserved

1.8V

Internally PU 20 kΩ to SIMVCC1

1.8/2.85V

C16 SIMCLK2 O External SIM 2 signal – Clock 1.8/2.85V D17 SIMRST2 O External SIM 2 signal – Reset 1.8/2.85V E16 SIMIO2 I/O External SIM 2 signal – Data I/O 1.8/2.85V Internally PU

20kΩ to

SIMVCC2 C18 SIMIN2 I External SIM 2 signal – Presence 1.8V Active low D15 SIMVCC2 - External SIM2 signal – Power

supply for SIM2

Analog Audio interface

B5 EAR1_MT+ AO Earphone signal output1, phase + Audio A4 EAR1_MT- AO Earphone signal output1, phase - Audio B3 MIC1_MT+ AI Mic signal input1, phase + Audio A2 MIC1_MT- AI Mic signal input1, phase - Audio G6 MICBIAS AO Mic BIAS Audio

1.8/2.85V

E2 EAR2_MT+ AO Earphone signal output2, phase + Audio

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PAD Signal I/O Function Type Comment

D1 EAR2_MT- AO Earphone signal output2, phase - Audio C2 MIC2_MT+ AI Mic signal input2, phase + Audio B1 MIC2_MT- AI Mic signal input2, phase - Audio

Digital Voice Interface (DVI)

D11 DVI_WA0 O Digital Voice interface (WA0

master output) C8 DVI_RX I Digital Voice interface (Rx) 1.8V D9 DVI_TX O Digital Voice interface (Tx) 1.8V C10 DVI_CLK O Digital Voice interface (CLK master

output) C12 REF_CLK O Reference clock for external

Codec

General Purpose Digital I/O

F9 GPIO_01 I/O GPIO_01 1.8V Alternate Fn

E10 GPIO_02 I/O GPIO_02 1.8V Alternate Fn

F11 GPIO_03 I/O GPIO_03 1.8V Alternate Fn

E12 GPIO_04 I/O GPIO_04 1.8V Alternate Fn

1.8V

I2C

F13 GPIO_05 I/O GPIO_05 1.8V

E14 GPIO_06 I/O GPIO_06 1.8V Alternate Fn

W19 GPIO_10 I/O GPIO_10 1.8V Alternate Fn

AN4 GPIO_20 I/O GPIO_20 1.8V

RF Section

AD1 Antenna I/O GSM/EDGE/UMTS/LTE main

antenna (50 Ohm) AU9 ANT_DIV I UMTS/LTE antenna diversity input

(50 Ohm)

Alternate Fn I2C

I2C

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PAD Signal I/O Function Type Comment

GPS Section

S1 ANT_GPS I GPS antenna (50 Ohm) RF V2 GPS_LNA_EN O Enables the external regulator for

GPS LNA W3 GPS_SYNC O GPS sync signal for Dead

Reckoning

Miscellaneous Functions

AN8 RESET_N I Reset input Active low AS1 ON_OFF_N I Power ON / Power OFF input Active low AN12 SHDN_N I Unconditional Shutdown input Active low P17 VAUX/PWRM

ON D5 ADC_IN1 AI Analog/Digital Converter Input 1 Analog E6 ADC_IN2 AI Analog/Digital Converter Input 2 Analog F7 ADC_IN3 AI Analog/Digital Converter Input 3 Analog AU3 STAT_LED O Status Indicator LED 1.8V

O Supply output for external

accessories / Power ON monitor

1.8V

AN10 SW_RDY O Indicates that the boot sequence

has completed successfully

SGMII Interface

ZZ11 SGMII_RX_P AI SGMII receive - plus PHY ZZ13 SGMII_RX_M AI SGMII receive - minus PHY ZZ15 SGMII_TX_P AO SGMII transmit - plus PHY ZZ17 SGMII_TX_M AO SGMII transmit - minus PHY

Ethernet PHY Control Interface

G14 MAC_MDC O MAC to PHY Clock 2.85V G12 MAC_MDIO I/O MAC to PHY Data 2.85V G8 ETH_RST_N O Ethernet PHY Reset 2.85V G10 ETH_INT_N I Ethernet PHY Interrupt 1.8V

1.8V

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PAD Signal I/O Function Type Comment

HSIC Interface

A14 HSIC_DATA I/O High-speed inter-chip interface -

data

A16 HSIC_STB I/O High-speed inter-chip interface -

strobe

I2C Interface

C14 I2C_SCL I/O I2C clock 1.8V

D13 I2C_SDA I/O I2C Data 1.8V Internal PU

Power Supply

AP17 VBATT - Main Power Supply (Digital

Section)

AP19 VBATT -

AR18 VBATT - Main Power Supply (Digital

Main Power Supply (Digital Section)

Section)

1.2V

Internal PU

2.2 kΩ to

1.8V

2.2 kΩ to

1.8V

Power

AR20 VBATT - Main Power Supply (Digital

Section) AS17 VBATT_PA - Main Power Supply (RF Section) Power AS19 VBATT_PA - Main Power Supply (RF Section) Power AT18 VBATT_PA - Main Power Supply (RF Section) Power AU17 VBATT_PA - Main Power Supply (RF Section) Power AU19 VBATT_PA - Main Power Supply (RF Section) Power AT20 VBATT_PA - Main Power Supply (RF Section) Power A0 GND - Ground N0 GND Ground R0 GND - Ground T0 GND - Ground V0 GND - Ground

Power

X0 GND - Ground

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PAD Signal I/O Function Type Comment

AA0 GND - Ground AC0 GND - Ground AE0 GND - Ground AG0 GND - Ground AJ0 GND - Ground AL0 GND - Ground AN0 GND - Ground AR0 GND - Ground AV0 GND - Ground ZZ1 GND - Ground F1 GND - Ground M1 GND - Ground P1 GND - Ground U1 GND - Ground W1 GND - Ground Y1 GND - Ground AB1 GND - Ground AF1 GND - Ground AH1 GND - Ground AK1 GND - Ground AU1 GND - Ground N2 GND - Ground R2 GND - Ground T2 GND - Ground X2 GND - Ground AA2 GND - Ground AC2 GND - Ground AE2 GND - Ground

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PAD Signal I/O Function Type Comment

AG2 GND - Ground AJ2 GND - Ground AL2 GND - Ground AN2 GND - Ground AR2 GND - Ground D3 GND - Ground P3 GND - Ground AP3 GND - Ground C4 GND - Ground AR4 GND - Ground AT4 GND - Ground AP5 GND - Ground AS5 GND - Ground AU5 GND - Ground A6 GND - Ground C6 GND - Ground AR6 GND - Ground AT6 GND - Ground D7 GND - Ground AP7 GND - Ground AS7 GND - Ground AU7 GND - Ground T8 GND - Ground V8 GND - Ground X8 GND - Ground AA8 GND - Ground AR8 GND - Ground AT8 GND - Ground

Rev. 4.3 Page 30 of 123 2017-12-07

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Telit Communications S p A LE920A4NA User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual