Telit Wireless Solutions JF2 Manuel d'installation

JF2

Hardware User Guide

1vv0300985 Rev.5

2018-05-04

JF2 Hardware User Guide Notices

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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE

NOTICES

While reasonable efforts have been made to ensure 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 manual and the Telit products described herein 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 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 Third Party supplied Software (SW) products described in this instruction manual

may include copyrighted Telit and other Third Party supplied computer programs stored in

semiconductor memories or other media. Laws in the Italy and other countries preserve for Telit

and other Third 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 Third Party supplied SW computer programs contained

in the Telit products described in this manual may not be copied (reverse engineered) or

reproduced in any manner without the express written permission of Telit or the Third 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 Third 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.

JF2 Hardware User Guide Notices

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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 the 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.

JF2 Hardware User Guide Product Applicability

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PRODUCT APPLICABILITY

PRODUCT

JF2

Table 0-1 Product Applicability Table

JF2 Hardware User Guide Contents

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CONTENTS

NOTICES...............................................................................................................................2

COPYRIGHTS .......................................................................................................................2

COMPUTER SOFTWARE COPYRIGHTS.............................................................................2

USAGE AND DISCLOSURE RESTRICTIONS ......................................................................3

PRODUCT APPLICABILITY..................................................................................................4

CONTENTS ...........................................................................................................................5

TABLES.................................................................................................................................8

FIGURES...............................................................................................................................8

INTRODUCTION........................................................................................................9

Purpose .................................................................................................................9

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

Contact and Support Information............................................................................9

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

Related Documents..............................................................................................10

1.5.1 Related Documents Requiring a Non-Disclosure Agreement...........................10

PRODUCT VARIANTS.............................................................................................11

FIRMWARE FEATURES AND CONFIGURATION ..................................................12

Low Power Modes................................................................................................12

3.1.1 Full Power .......................................................................................................12

3.1.2 TricklePowerTM ................................................................................................12

3.1.3 Push-To-Fix.....................................................................................................12

3.1.4 Micro Power Mode (MPM)...............................................................................12

Internal LNA.........................................................................................................13

Motion Dynamics..................................................................................................13

3.3.1 Static Navigation..............................................................................................13

3.3.2 Velocity Dead-Reckoning ................................................................................13

3.3.3 MEMS Static Detection....................................................................................13

3.3.4 MEMS Wake-up ..............................................................................................13

MEMS Configuration............................................................................................13

Advanced Features..............................................................................................14

3.5.1 CW Jamming Detection...................................................................................14

3.5.2 SBAS...............................................................................................................14

3.5.3 2-D Acquisition ................................................................................................14

3.5.4 MEMS Compass Heading ...............................................................................14

POWERING THE JF2...............................................................................................15

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1.8V Supply Voltage.............................................................................................15

4.1.1 EEPROM Powerdown .....................................................................................16

4.1.2 Capacitance ....................................................................................................16

Understanding ON-OFF and SYSTEM-ON ..........................................................17

4.2.1 Auto-ON Configuration (GPIO8 Control)..........................................................17

4.2.2 Powerup Sequence.........................................................................................18

4.2.3 Powerdown Sequence.....................................................................................19

Reset Design Details............................................................................................19

UPDATING THE FIRMWARE: FLASH MODULE (ONLY).......................................20

UPDATING PATCH CODE: EEPROM MODULES AND ROM MODULES WITH HOST

MEMORY.............................................................................................................................21

MAIN SERIAL PORT................................................................................................22

UART Mode.........................................................................................................22

I2C Mode .............................................................................................................23

SPI Mode.............................................................................................................23

Host Message Protocols ......................................................................................24

7.4.1 NMEA Protocol................................................................................................24

7.4.2 OSP Considerations........................................................................................24

MEMS SENSOR/EEPROM INTERFACE .................................................................25

RF FRONT END DESIGN ........................................................................................26

RF Signal Requirements......................................................................................26

GPS Antenna Polarization....................................................................................28

GPS Antenna Gain...............................................................................................28

Active versus Passive Antenna............................................................................29

System Noise Floor..............................................................................................29

External LNA Gain and Noise Figure....................................................................29

Powering an External LNA (active antenna).........................................................30

Implications of the Pre-select SAW Filter..............................................................30

RF Trace Losses..................................................................................................31

RF Interference....................................................................................................31

Shielding..............................................................................................................31

REFERENCE DESIGN.............................................................................................32

RF........................................................................................................................32

Serial Interface (UART)........................................................................................33

Power Control......................................................................................................33

ROM 9600 bps.....................................................................................................33

HANDLING AND SOLDERING................................................................................34

Moisture Sensitivity..............................................................................................34

ESD .....................................................................................................................35

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Reflow..................................................................................................................35

Assembly Issues..................................................................................................35

PCB LAYOUT DETAILS ..........................................................................................36

SAFETY RECOMMENDATIONS..............................................................................37

GLOSSARY AND ACRONYMS...............................................................................38

DOCUMENT HISTORY ............................................................................................42

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TABLES

Table 0-1 Product Applicability Table .......................................................................................... 4

Table 4-1 – Power State Timing..................................................................................................18

Table 7-1 – Operating Interface...................................................................................................22

Table 7-2 – I2C Pin Assignments................................................................................................23

Table 7-3 – SPI Mode Pin Assignments......................................................................................23

FIGURES

Figure 4-1 Initial Application of Power .........................................................................................18

Figure 10-1 JF2 Reference Design – Active Antenna..................................................................32

Figure 11-1 Label for Moisture Sensitive Devices........................................................................34

Figure 12-1 JF2 Pad Design.......................................................................................................36

JF2 Hardware User Guide Introduction

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INTRODUCTION

Purpose

The purpose of this document is to provide information regarding the function, features, and usage

of the Telit products listed in Section Product Applicability

Please refer to that section for details of the members of the product family.

Audience

This document is intended for customer personnel who are responsible for design and

implementation of a GNSS receiver system.

Contact and Support Information

For general contact, technical support services, technical questions, and to report documentation

errors contact Telit Technical Support at:

•TS-EMEA@telit.com

•TS-AMERICAS@telit.com

•TS-[email protected]

For detailed information about where you can buy the Telit modules or for recommendations on

accessories and components visit:

http://www.telit.com

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.

JF2 Hardware User Guide Introduction

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Text Conventions

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

Danger – This information MUST be followed or catastrophic equipment failure or bodily

injury may occur.

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.

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

the module.

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