Telit Wireless Solutions GE865 Hardware User's Manual

GE865 Hardware User Guide

1vv0300799 Rev.17 – 2017-05-11

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APPLICABILITY TABLE

PRODUCT

GE865-QUAD

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SPECIFICATIONS 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 entirely 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

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.

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

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.

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.

Contents

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1. INTRODUCTION ......................................................................................................................................................... 7

1.1. SCOPE ....................................................................................................................................................................... 7

1.2. AUDIENCE ................................................................................................................................................................. 7

1.3. CONTACT INFORMATION, SUPPORT ........................................................................................................................... 7

1.4. DOCUMENT ORGANIZATION ..................................................................................................................................... 7

1.5. TEXT CONVENTIONS ................................................................................................................................................. 8

1.6. RELATED DOCUMENTS ............................................................................................................................................. 9

2. OVERVIEW ................................................................................................................................................................ 9

3. GE865 MECHANICAL DIMENSIONS .......................................................................................................................... 11

4. GE865 MODULE CONNECTIONS ............................................................................................................................... 12

4.1. PIN-OUT ................................................................................................................................................................ 12

4.1.1. BGA Balls Layout .......................................................................................................................................... 15

5. HARDWARE COMMANDS ........................................................................................................................................ 16

5.1. TURNING ON THE GE865 ....................................................................................................................................... 16

5.2. TURNING OFF THE GE865 ...................................................................................................................................... 20

5.3. RESETTING THE GE865 ........................................................................................................................................... 22

5.3.1. Hardware Unconditional restart ................................................................................................................... 22

6. POWER SUPPLY ....................................................................................................................................................... 25

6.1. POWER SUPPLY REQUIREMENTS ............................................................................................................................. 25

6.2. POWER CONSUMPTION ............................................................................................................................................ 26

6.2.1. Power consumption Plots .............................................................................................................................. 27

6.3. GENERAL DESIGN RULES ........................................................................................................................................ 31

6.3.1. Electrical Design Guidelines ......................................................................................................................... 31

6.3.2. Thermal Design Guidelines ........................................................................................................................... 34

6.3.3. Power Supply PCB layout Guidelines ........................................................................................................... 35

7. ANTENNA ................................................................................................................................................................ 36

7.1. GSM ANTENNA REQUIREMENTS ............................................................................................................................ 36

7.2. GSM ANTENNA - PCB LINE GUIDELINES ................................................................................................................ 37

7.3. PCB GUIDELINES IN CASE OF FCC CERTIFICATION ................................................................................................. 38

7.3.1. Transmission line design ............................................................................................................................... 38

7.3.2. Transmission line measurements ................................................................................................................... 39

7.4. GSM ANTENNA - INSTALLATION GUIDELINES ........................................................................................................ 41

8. LOGIC LEVEL SPECIFICATIONS .................................................................................................................................. 42

8.1. RESET SIGNAL ......................................................................................................................................................... 43

9. SERIAL PORTS .......................................................................................................................................................... 44

9.1. MODEM SERIAL PORT ....................................................................................................................................... 44

9.2. RS232 LEVEL TRANSLATION ................................................................................................................................... 45

9.3. UART BEHAVIOUR ................................................................................................................................................. 49

10. AUDIO SECTION OVERVIEW ................................................................................................................................ 50

10.1. ELECTRICAL CHARACTERISTICS ............................................................................................................................. 50

10.1.1. Input Lines ..................................................................................................................................................... 51

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10.1.2. Output Lines .................................................................................................................................................. 51

11. GENERAL PURPOSE I/O ....................................................................................................................................... 52

11.1. GPIO LOGIC LEVELS ............................................................................................................................................... 53

11.2. USING A GPIO PAD AS INPUT ............................................................................................................................... 55

11.3. USING A GPIO PAD AS OUTPUT ........................................................................................................................... 55

11.4. USING THE RF TRANSMISSION CONTROL GPIO4 .................................................................................................... 55

11.5. USING THE RFTXMON OUTPUT GPIO5 ................................................................................................................ 56

11.6. USING THE ALARM OUTPUT GPIO6 ........................................................................................................................ 56

11.7. USING THE BUZZER OUTPUT GPIO7 ....................................................................................................................... 56

11.8. INDICATION OF NETWORK SERVICE AVAILABILITY .................................................................................................. 57

11.9. RTC BYPASS OUT ................................................................................................................................................... 58

11.10. EXTERNAL SIM HOLDER IMPLEMENTATION ...................................................................................................... 58

12. DAC AND ADC SECTION ....................................................................................................................................... 59

12.1. DAC CONVERTER ................................................................................................................................................... 59

12.1.1. Description .................................................................................................................................................... 59

12.1.2. Enabling DAC ............................................................................................................................................... 60

12.1.3. Low Pass Filter Example ............................................................................................................................... 60

12.2. ADC CONVERTER ................................................................................................................................................... 61

12.2.1. Description .................................................................................................................................................... 61

12.2.2. Using ADC Converter ................................................................................................................................... 61

13. MOUNTING THE GE865 ON YOUR BOARD ........................................................................................................... 62

13.1. GENERAL ................................................................................................................................................................ 62

13.2. MODULE FINISHING & DIMENSIONS ........................................................................................................................ 62

13.3. RECOMMENDED FOOT PRINT FOR THE APPLICATION ................................................................................................ 63

13.4. DEBUG OF THE GE865 IN PRODUCTION ................................................................................................................... 64

13.5. STENCIL .................................................................................................................................................................. 64

13.6. PCB PAD DESIGN .................................................................................................................................................... 65

13.7. SOLDER PASTE ........................................................................................................................................................ 66

13.7.1. GE865 Solder reflow ..................................................................................................................................... 67

14. PACKING SYSTEM ................................................................................................................................................ 69

14.1. PACKING ON TRAY .................................................................................................................................................. 69

14.1.1. Tray detail ..................................................................................................................................................... 70

14.2. PACKAGING ON REEL .............................................................................................................................................. 71

14.2.1. Carrier Tape detail ........................................................................................................................................ 71

14.2.2. Reel detail ...................................................................................................................................................... 72

14.2.3. Packaging detail ............................................................................................................................................ 73

14.3. MOISTURE SENSIBILITY ........................................................................................................................................... 73

15. SAFETY RECOMMANDATIONS ............................................................................................................................. 74

16. DOCUMENT HISTORY .......................................................................................................................................... 75

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1. Introduction

1.1. Scope

The aim of this document is the description of some hardware solutions useful for developing a

product with the Telit GE865 module.

1.2. Audience

This document is intended for Telit customers, who are integrators, about to implement their

applications using our GE865 modules.

1.3. Contact Information, Support

For general contact, technical support, to report documentation errors and to order manuals,

contact Telit’s Technical Support Center (TTSC) at:

TS-EMEA@telit.com

TS-NORTHAMERICA@telit.com

TS-LATINAMERICA@telit.com

TS-APAC@telit.com

Alternatively, use:

http://www.telit.com/en/products/technical-support-center/contact.php

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.

1.4. Document Organization

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This document contains the following chapters:

Chapter 1: “Introduction” provides a scope for this document, target audience, contact and

support information, and text conventions.

Chapter 2: “Overview” provides an overview of the document.

Chapter 3: “GE865 Mechanical Dimensions”

Chapter 4: “GE865 Module Connections” deals with the pin out configuration and layout.

Chapter 5: “Hardware Commands” How to operate on the module via hardware.

Chapter 6: “Power supply” Power supply requirements and general design rules.

Chapter 7: “Antenna” The antenna connection and board layout design are the most important

parts in the full product design.

Chapter 8: “Logic Level specifications” Specific values adopted in the implementation of logic

levels for this module.

Chapter 9: “Serial ports” The serial port on the Telit GE865 is the core of the interface between

the module and OEM hardware

Chapter 10: “Audio Section overview” Refers to the audio blocks of the Base Band Chip of the

GE865 Telit Modules.

Chapter 11: “General Purpose I/O” How the general purpose I/O pads can be configured.

Chapter 12 “DAC and ADC Section” Deals with these two kind of converters.

Chapter 13: “Mounting the GE865 on the application board” Recommendations and specifics on

how to mount the module on the user’s board.

1.5. Text Conventions

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

injury may occur.

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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.

1.6. Related Documents

• Telit's GSM/GPRS Family Software User Guide, 1vv0300784

• Audio settings application note , 80000NT10007a

• Digital Voice Interface Application Note, 80000NT10004a

• GE865 Product description,

• SIM Holder Design Guides, 80000NT10001a

• AT Commands Reference Guide, 80000ST10025a

• Telit EVK2 User Guide, 1vv0300704

2. Overview

The aim of this document is the description of some hardware solutions useful for developing a

product with the Telit GE865 module.

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In this document all the basic functions of a mobile phone will be taken into account; for each

one of them a proper hardware solution will be suggested and eventually the wrong solutions

and common errors to be avoided will be evidenced. Obviously this document cannot embrace

the whole hardware solutions and products that may be designed. The wrong solutions to be

avoided shall be considered as mandatory, while the suggested hardware configurations shall not

be considered mandatory, instead the information given shall be used as a guide and a starting

point for properly developing your product with the Telit GE865 module. For further hardware

details that may not be explained in this document refer to the Telit GE865 Product Description

document where all the hardware information is reported.

NOTICE:

(The integration of the GSM/GPRS GE865 cellular module within user application shall be

done according to the design rules described in this manual.

The information presented in this document is believed to be accurate and reliable. However, no

responsibility is assumed by Telit Communications S.p.A. for its use, nor any infringement of

patents or other rights of third parties which may result from its use. No license is granted by

implication or otherwise under any patent rights of Telit Communications S.p.A. other than for

circuitry embodied in Telit products. This document is subject to change without notice.

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3. GE865 Mechanical Dimensions

The GE865-QUAD overall dimensions are:

• Length: 22 mm

• Width: 22 mm

• Thickness: 3.0 mm

• Weight: 3,2 g

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4. GE865 module connections

4.1. PIN-OUT

Ball Signal I/O Function Note Type

Audio

E8

EAR- AO Earphone signal output, phase - Audio

D8

EAR+ AO Earphone signal output, phase + Audio

B8

MIC+

AI

Mic.signal input; phase+

Audio

C8

MIC-

AI

Mic.signal input; phase-

Audio

SIM card interface

A5

SIMCLK O External SIM signal – Clock 1,8 / 3V

A8

SIMRST

O

External SIM signal – Reset

1,8 / 3V

A6

SIMIO

I/O

External SIM signal – Data I/O

4.7K Pull up

1,8 / 3V

B7

SIMIN I External SIM signal – Presence (active low) 1,8 / 3V

A7

SIMVCC - External SIM signal – Power supply for the SIM 1,8 / 3V

Trace

D1

TX_AUX

O

Auxiliary UART (TX Data to DTE)

CMOS 2.8V

E1

RX_AUX

I

Auxiliary UART (RX Data from DTE)

CMOS 2.8V

Prog. / Data + HW Flow Control

A3

C103/TXD I Serial data input (TXD) from DTE CMOS 2.8V

A4

C104/RXD

O

Serial data output to DTE

CMOS 2.8V

B3

C108/DTR I

Input for Data terminal ready signal (DTR) from

DTE

CMOS 2.8V

A1

C105/RTS

I

Input for Request to send signal (RTS) from DTE

CMOS 2.8V

A2

C106/CTS O Output for Clear to send signal (CTS) to DTE CMOS 2.8V

B5

C109/DCD O Output for Data carrier detect signal (DCD) to DTE CMOS 2.8V

B2

C107/DSR

O

Output for Data set ready signal (DSR) to DTE

CMOS 2.8V

B4

C125/RING

O

Output for Ring indicator signal (RI) to DTE

CMOS 2.8V

DAC and ADC

G7

DAC_OUT AO Digital/Analog converter output D/A

F5

ADC_IN1 AI Analog/Digital converter input A/D

F6

ADC_IN2

AI

Analog/Digital converter input

A/D

Miscellaneous Functions

C1

RESET* I Reset input Internal pull-up

H2

VRTC AI/O VRTC Backup capacitor Power

G8

STAT_LED

O

Status indicator led

CMOS 1.8V

B1

ON_OFF* I

Input command for switching power ON or OFF

(toggle command).

47K Pull Up Pull up to VRTC

E2

PWRMON O Power ON Monitor CMOS 2.8V

H5

Antenna

O

Antenna output – 50 Ω

RF

H1

Service I

Service pin can be used to upgrade the

module from ASC1 as a alternative to default

upgrading procedure using ASC0

Any pull-up/down

are required

CMOS 2.8V

GPIO

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Ball Signal I/O Function Note Type

D3

GPIO_01 / DVI_WA0 I/O

GPIO01 Configurable GPIO / Digital Audio

Interface (WA0)

CMOS 2.8V

D2

GPIO_02 / JDR /

DVI_RX

I/O

GPIO02 I/O pin / Jammer Detect Report / Digital

Audio Interface (RX)

CMOS 2.8V

E4

GPIO_03 / DVI_TX I/O

GPIO03 GPIO I/O pin // Digital Audio Interface

(TX)

CMOS 2.8V

H7

GPIO_04 / TX_DISAB

I/O

GPIO04 Configurable GPIO / TX Disable input

CMOS 2.8V

G2

GPIO_05 / RFTXMON I/O

GPIO05 Configurable GPIO / Transmitter ON

monitor

CMOS 2.8V

H8

GPIO_06 / ALARM

I/O

GPIO06 Configurable GPIO / ALARM

CMOS 2.8V

G6

GPIO_07 / BUZZER I/O GPIO07 Configurable GPIO / Buzzer CMOS 2.8V

D4

GPIO_08 / DVI_CLK I/O

GPIO08 Configurable GPIO / Digital Audio

Interface (CLK)

CMOS 2.8V

F4

GPIO_09 I/O GPIO09 4.7 K Pull Up Open Drain

E3

GPIO_10

I/O

GPIO10

4.7 K Pull Up

Open Drain

Power Supply

F1

VBATT - Main power supply (Baseband) Power

F2

VBATT_PA - Main power supply (Radio PA) Power

F3

VBATT_PA - Main power supply (Radio PA) Power

G1

GND - Ground Power

C2

GND - Ground Power

C7

GND - Ground Power

E5

GND - Ground Power

E7

GND - Ground Power

G5

GND

-

Ground

Power

G4

GND

-

Ground

Power

G3

GND - Ground Power

H3

GND - Ground Power

H6

GND

-

Ground

Power

RESERVED

B6

-

C3

-

C4

-

C5

-

C6

-

D5

-

D6

-

D7

-

E6

-

F7

-

F8

-

WARNING:Reserved pins must not be connected.

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NOTE:

If not used, almost all pins should be left disconnected. The only exceptions are the following

pins:

RTS pin should be connected to the GND (on the module side) if flow control is not used

signal

F1,F2,F3

VBATT & VBATT_PA

G1, C2, C7, E5, E7, G5,

G4, G3, H3, H6

GND

B1

ON/OFF*

A3

TXD

C1

RESET*

A4

RXD

A1

RTS

D1

TXD_AUX

E1

RXD_AUX

H1

Service

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4.1.1. BGA Balls Layout

TOP VIEW

A B C D E F G H

1

C105 / RTS ON_OFF RESET* TX_AUX RX_AUX VBATT GND SERVICE

2

C106/CTS C107/DSR GND

GPIO_02 /

DVI_RX

PWRMON

VBATT_P

A

GPIO_05 VRTC

3

C103_TXD C108/DTR -

GPIO_01 /

DVI_WA0

GPIO_10

VBATT_P

A

GND GND

4

C104/RXD C125/RING -

GPIO_08 /

DVI_CLK

GPIO_03 /

DVI_TX

GPIO_09 GND

5

SIMCLK C109/DCD - - GND ADC1 GND ANT

6

SIMIO - - - - ADC2 GPIO_07 GND

7

SIMVCC SIMIN GND - GND - DAC GPIO_04

8

SIMRST MIC+ MIC- EAR+ EAR- - STATLED GPIO_06

LEGENDA:

NOTE:

The pin defined as H4 has to be considered RESERVED and not connected on any pin in the

application. The related area on the application has to be kept empty.

AUDIO

SIM CARD

ANTENNA

UARTS

DAC and ADC

MISCELLANEOUS

GPIO

POWER SUPPLY VBATT

POWER SUPPLY GND

RESERVED

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5. Hardware Commands

5.1. Turning ON the GE865

To turn on the GE865 the pad ON# must be tied low for at least 1 second and then released.

When the power supply voltage is lower than 3.4V the pad ON# must be tied low at least 5

seconds.

The maximum current that can be drained from the ON# pad is 0,1 mA.

A simple circuit to do it is:

NOTE:

Don't use any pull up resistor on the ON# line, it is internally pulled up. Using pull up resistor

may bring to latch up problems on the GE865 power regulator and improper power on/off of the

module. The line ON# must be connected only in open collector configuration.

NOTE:

In this document all the lines that are inverted, hence have active low signals are labelled with a

name that ends with”#" or with a bar over the name.

TIP:

To check if the device has powered on, the hardware line PWRMON should be monitored. After

900ms the line raised up the device could be considered powered on.

NOTE:

It is mandatory to avoid sending data to the serial ports during the first 200mS of the module

start-up.

A flow chart showing the proper turn on procedure is displayed below:

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NOTE:

In order to avoid a back powering effect it is recommended to avoid having any HIGH logic

level signal applied to the digital pins of the GE865 when the module is powered off or during

an ON/OFF transition.

Modem ON Proc.

Y

Modem RESET

Proc.

AT init sequence.

Start AT CMD.

N

PWMON = ON?

AT answer in 1Sec ?

N

Y

N

Delay 1s

DELAY= 900mSec

ON_OFF = LOW

Delay = 5 Sec

ON_OFF = HIGH

Enter AT<CR>

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A flow chart showing the AT command managing procedure is displayed below:

For example:

AT answer in

1Sec ?

Y

N

Start AT CMD.

DELAY= 300mSec

Enter AT<CR>

AT init sequence.

Modem ON Proc.

Disconnect VBatt

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1- Let's assume you need to drive the ON# pad with a totem pole output of a +3/5 V

microcontroller (uP_OUT1):

2- Let's assume you need to drive the ON# pad directly with an ON/OFF button:

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5.2. Turning OFF the GE865

Turning off of the device can be done in two ways:

• via AT command (see GE865 Software User Guide, AT#SHDN)

• by tying low pin ON#

Either ways, the device issues a detach request to network informing that the device will not be

reachable any more.

To turn OFF the GE865 the pad ON# must be tied low for at least 2 seconds and then released.

A Pulse duration less than 2 seconds should also start the power off procedure, but this is not

guaranteed.

The same circuitry and timing for the power on must be used.

The device shuts down after the release of the ON# pad.

TIP:

To check if the device has been powered off, the hardware line PWRMON must be monitored.

The device is powered off when PWRMON goes low.

NOTE:

In order to avoid a back powering effect it is recommended to avoid having any HIGH logic

level signal applied to the digital pins of the GE865 when the module is powered off or during

an ON/OFF transition.

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Telit Wireless Solutions GE865 Hardware User's Manual

Telit Wireless Solutions GE865 Hardware User's Manual

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