Telit Wireless Solutions GE310-GNSS Guida

[01.2017]

Mod.0818 2017-01 Rev.0

GE310-GNSS

Hardware Design Guide

1VV0301564 Rev. 5 –2019-01-23

GE310-GNSS Hardware Design Guide

1VV0301564 Rev. 5 Page 2of 89 2019-01-23

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 obligationto notify anyperson 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 inthis 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 theexpresswritten

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.

GE310-GNSS Hardware Design Guide

1VV0301564 Rev. 5 Page 3of 89 2019-01-23

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.

GE310-GNSS Hardware Design Guide

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APPLICABILITY TABLE

PRODUCTS

GE310-GNSS

GE310-GNSS Hardware Design Guide 
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Contents 
NOTICE 2 
COPYRIGHTS................................................................................................ 2 
COMPUTER SOFTWARE COPYRIGHTS...................................................... 2 
USAGE AND DISCLOSURE RESTRICTIONS............................................... 3 
I. License Agreements..................................................................... 3 
II. Copyrighted Materials................................................................... 3 
III. High Risk Materials....................................................................... 3 
IV. Trademarks .................................................................................. 3 
V. Third Party Rights......................................................................... 3 
APPLICABILITY TABLE................................................................................ 4 
CONTENTS.................................................................................................... 5 
1. INTRODUCTION.......................................................................... 9 
 Scope........................................................................................... 9 
 Audience....................................................................................... 9 
 Contact Information, Support........................................................ 9 
 Text Conventions........................................................................ 10 
 Related Documents.................................................................... 11 
2. GENERAL PRODUCT DESCRIPTION ...................................... 12 
 Overview..................................................................................... 12 
 Product Variants and Frequency Bands...................................... 12 
 Target market............................................................................. 13 
 Main features.............................................................................. 13 
 TX Output Power........................................................................ 14 
 Mechanical specifications........................................................... 15 
2.6.1. Dimensions................................................................................. 15 
3. PINS ALLOCATION................................................................... 16 
 Pin-out........................................................................................ 16 
 LGA Pads Layout........................................................................ 24 
4. POWER SUPPLY....................................................................... 25 
 Power Supply Requirements....................................................... 25 
 Power Consumption ................................................................... 26 

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 General Design Rules................................................................. 27 
4.3.1. Electrical Design Guidelines ....................................................... 27 
4.3.1.1. +5V Source Power Supply Design Guidelines ............................ 27 
4.3.2. +12V Source Power Supply Design Guidelines .......................... 28 
4.3.2.1. Battery Source Power Supply Design Guidelines........................ 29 
4.3.3. Thermal Design Guidelines......................................................... 30 
4.3.4. Power Supply PCB layout Guidelines......................................... 31 
 RTC Bypass out.......................................................................... 32 
 VAUX Power Output................................................................... 33 
5. DIGITAL SECTION .................................................................... 34 
 Logic Levels................................................................................ 34 
 Power On.................................................................................... 35 
 Power Off.................................................................................... 39 
 Unconditional Restart.................................................................. 41 
5.4.1. PIN DESCRIPTION.................................................................... 41 
5.4.2. Operating levels.......................................................................... 42 
 Communication ports.................................................................. 44 
5.5.1. Serial Ports................................................................................. 44 
5.5.1.1. MODEM SERIAL PORT 0 (USIF0)............................................. 44 
5.5.1.2. MODEM SERIAL PORT 1 (USIF1)............................................. 46 
5.5.1.3. RS232 LEVEL TRANSLATION................................................... 48 
5.5.1.4. 5V UART level translation........................................................... 51 
 General purpose I/O................................................................... 52 
5.6.1. Using a GPIO as INPUT............................................................. 53 
5.6.2. Using a GPIO as OUTPUT......................................................... 54 
5.6.3. Indication of network service availability ..................................... 54 
 External SIM Holder.................................................................... 55 
6. GSM RF SECTION..................................................................... 56 
 Antenna requirements................................................................. 56 
6.1.1. Main Antenna ............................................................................. 56 
6.1.2. PCB Design guidelines............................................................... 57 
6.1.2.1. Transmission line design ............................................................ 58 
6.1.2.2. Transmission Line Measurements .............................................. 59 
6.1.2.3. Antenna Installation Guidelines................................................... 60 
7. GNSS RECEIVER SECTION...................................................... 61 
 Signals Description..................................................................... 61 

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 Power Consumption ................................................................... 61 
 GNSS Hosted configuration........................................................ 62 
 GNSS Stand Alone configuration................................................ 63 
 GNSS RF Front End Design....................................................... 63 
7.5.1. RF Signal Requirements............................................................. 63 
7.5.2. GPS Antenna Polarization.......................................................... 65 
7.5.3. GPS Antenna Gain ..................................................................... 65 
7.5.4. System Noise Floor .................................................................... 66 
7.5.5. Active versus Passive Antenna................................................... 66 
7.5.6. GPS Antenna - PCB Line Guidelines.......................................... 66 
7.5.7. RF Trace Losses ........................................................................ 67 
7.5.8. Implications of the Pre-select SAW Filter.................................... 67 
7.5.9. External LNA Gain and Noise Figure.......................................... 67 
7.5.10. Powering the External LNA......................................................... 68 
7.5.11. External LNA Enable .................................................................. 69 
7.5.12. Shielding..................................................................................... 69 
7.5.13. GPS Antenna –Installation......................................................... 69 
8. BLUETOOTH SECTION............................................................. 70 
 Main Features............................................................................. 70 
 Bluetooth Profiles........................................................................ 70 
8.2.1. Hands Free Gateway (HFG)....................................................... 70 
8.2.2. Phone Book Access Profile (PBAP)............................................ 70 
8.2.3. Phone Book Access Profile Client (PBAPC) ............................... 70 
8.2.4. Serial Port Profile (SPP) ............................................................. 71 
 BLUETOOTH RF SECTION ....................................................... 71 
8.3.1. Antenna requirements................................................................. 71 
8.3.2. PCB Design guidelines............................................................... 71 
8.3.3. External Antenna........................................................................ 72 
8.3.4. Bluetooth Power Consumption.................................................... 73 
9. AUDIO SECTION ....................................................................... 74 
 Analog Audio.............................................................................. 74 
9.1.1. Signals Description..................................................................... 74 
10. MECHANICAL DESIGN............................................................. 75 
11. APPLICATION PCB DESIGN .................................................... 76 
 PCB pad design.......................................................................... 77 
 PCB pads ................................................................................... 77 

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 Stencil......................................................................................... 78 
 Solder paste ............................................................................... 78 
 Solder Reflow............................................................................. 78 
12. PACKAGING.............................................................................. 80 
 Tray............................................................................................ 80 
 Moisture sensitivity ..................................................................... 82 
13. CONFORMITY ASSESSMENT ISSUES .................................... 83 
 Approvals.................................................................................... 83 
 Declaration of Conformity ........................................................... 83 
14. SAFETY RECOMMENDATIONS................................................ 84 
 READ CAREFULLY.................................................................... 84 
15. REFERENCE TABLE OF RF BANDS CHARACTERISTICS..... 85 
16. ACRONYMS............................................................................... 86 
17. DOCUMENT HISTORY .............................................................. 88 
 
 

GE310-GNSS Hardware Design Guide

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1. INTRODUCTION

Scope

This document introduces the Telit GE310 modules 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 GE310-GNSS

variants, where GE310-GNSS refers to the variants listed in the applicability table.

Obviously, this document cannot embrace every hardware solution or every product that

can be designed. 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.

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

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

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.

GE310-GNSS Hardware Design Guide

1VV0301564 Rev. 5 Page 10 of 89 2019-01-23

Text Conventions

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.

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

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