Telit Communications S p A GE864Q2B Quadband GSM/ GPRS Module User Manual 1vv0300875 GE864 V2 Hardware User Guide r1

GE

864

QUAD V2

and

GE864 DUAL V2

Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

APPLICABILITY TABLE

APPLICABILITY TABLEAPPLICABILITY TABLE

APPLICABILITY TABLE

PRODUCT

PRODUCTPRODUCT

PRODUCT

GE

GEGE

GE864

864864

864-

--

-QUAD

QUADQUAD

QUAD V2

V2 V2

V2

GE

GEGE

GE864

864864

864-

--

-DUAL V2

DUAL V2DUAL V2

DUAL V2

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

DISCLAIMER

DISCLAIMERDISCLAIMER

DISCLAIMER

The information contained in this document is the proprietary information of Telit

Communications S.p.A. and its affiliates (“TELIT”).

The contents are confidential and any disclosure to persons other than the officers,

employees, agents or subcontractors of the owner or licensee of this document,

without the prior written consent of Telit, is strictly prohibited.

Telit makes every effort to ensure the quality of the information it makes available.

Notwithstanding the foregoing, Telit does not make any warranty as to the

information contained herein, and does not accept any liability for any injury, loss or

damage of any kind incurred by use of or reliance upon the information.

Telit disclaims any and all responsibility for the application of the devices

characterized in this document, and notes that the application of the device must

comply with the safety standards of the applicable country, and where applicable,

with the relevant wiring rules.

Telit reserves the right to make modifications, additions and deletions to this

document due to typographical errors, inaccurate information, or improvements to

programs and/or equipment at any time and without notice.

Such changes will, nevertheless be incorporated into new editions of this document.

Copyright: Transmittal, reproduction, dissemination and/or editing of this document

as well as utilization of its contents and communication thereof to others without

express authorization are prohibited. Offenders will be held liable for payment of

damages. All rights are reserved.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

Contents

ContentsContents

Contents

APPLICABILITY

TABLE .............................................................................................................................................. 2

1.

1.1.

1.

INTRODUCTION

INTRODUCTIONINTRODUCTION

INTRODUCTION ................................

................................................................

.....................................

..........

.....6

66

6

1.1.

S

COPE

.................................................................................................................................................................. 6

1.2.

A

UDIENCE

............................................................................................................................................................. 6

1.3.

C

ONTACT

I

NFORMATION

,

S

UPPORT

........................................................................................................................ 6

1.4.

D

OCUMENT

O

RGANIZATION

.................................................................................................................................... 7

1.5.

T

EXT

C

ONVENTIONS

.............................................................................................................................................. 8

1.6.

R

ELATED

D

OCUMENTS

........................................................................................................................................... 8

1.7.

D

OCUMENT

H

ISTORY

............................................................................................................................................. 9

2.

2.2.

2.

OVERVIEW

OVERVIEWOVERVIEW

OVERVIEW ................................

................................................................

............................................

........................

............ 10

1010

10

3.

3.3.

3.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL MECHANICAL DIME

DUAL MECHANICAL DIMEDUAL MECHANICAL DIME

DUAL MECHANICAL DIMENSIONS

NSIONSNSIONS

NSIONS................................

................................................................

.............................................................

..........................................................

............................. 11

1111

11

4.

4.4.

4.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 MODULE CONNE

DUAL V2 MODULE CONNEDUAL V2 MODULE CONNE

DUAL V2 MODULE CONNECTIONS

CTIONSCTIONS

CTIONS................................

................................................................

.............................................................

..........................................................

............................. 12

1212

12

4.1.

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

4.1.1.

BGA Balls Layout..................................................................................................................................... 17

5.

5.5.

5.

HARDWARE COMMANDS

HARDWARE COMMANDSHARDWARE COMMANDS

HARDWARE COMMANDS................................

................................................................

.....................................................

..........................................

..................... 19

1919

19

5.1.

T

URNING

ON

THE

GE864-QUAD

V2

/

GE864-DUAL

V2 ................................................................................... 19

5.2.

T

URNING

OFF

THE

GE864-QUAD

V2

/

GE864-DUAL

V2 ................................................................................. 21

5.2.1.

Hardware Unconditional Restart

........................................................................................................ 22

6.

6.6.

6.

PO

POPO

POWER SUPPLY

WER SUPPLYWER SUPPLY

WER SUPPLY................................

................................................................

...................................

......

... 24

2424

24

6.1.

P

OWER

S

UPPLY

R

EQUIREMENTS

......................................................................................................................... 24

6.2.

G

ENERAL

D

ESIGN

R

ULES

.................................................................................................................................... 25

6.2.1.

Electrical Design Guidelines

............................................................................................................... 25

6.2.2.

Thermal Design Guidelines

................................................................................................................. 29

6.2.3.

Power Supply PCB Layout Guidelines

................................................................................................ 30

6.2.4.

Parameters for ATEX Applications

.................................................................................................... 31

7.

7.7.

7.

ANTENNA

ANTENNAANTENNA

ANTENNA ................................

................................................................

............................................

........................

............ 33

3333

33

7.1.

GSM

A

NTENNA

R

EQUIREMENTS

.......................................................................................................................... 33

7.2.

GSM

A

NTENNA

–

I

NSTALLATION

G

UIDELINES

...................................................................................................... 34

8.

8.8.

8.

LOGIC LEVEL SPECIFIC

LOGIC LEVEL SPECIFICLOGIC LEVEL SPECIFIC

LOGIC LEVEL SPECIFICATIONS

ATIONSATIONS

ATIONS ................................

................................................................

..........................................

....................

.......... 35

3535

35

8.1.

R

ESET

S

IGNAL

.................................................................................................................................................... 36

9.

9.9.

9.

SERIAL PORTS

SERIAL PORTSSERIAL PORTS

SERIAL PORTS................................

................................................................

.....................................

..........

..... 37

3737

37

9.1.

MODEM

SERIAL

PORT.................................................................................................................................... 37

9.2.

RS232

L

EVEL

T

RANSLATION

............................................................................................................................. 39

9.3.

5V

UART

L

EVEL

T

RANSLATION

........................................................................................................................... 41

10.

10.10.

10.

AUDIO SECT

AUDIO SECTAUDIO SECT

AUDIO SECTION OVERVIEW

ION OVERVIEWION OVERVIEW

ION OVERVIEW ................................

................................................................

.............................................

..........................

............. 44

4444

44

10.1.

S

ELECTION MODE

............................................................................................................................................... 44

10.2.

E

LECTRICAL

C

HARACTERISTICS

........................................................................................................................ 46

10.2.1.

Input Lines Characteristics ...................................................................................................................... 46

10.2.2.

Output Lines Characteristics.................................................................................................................... 47

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

11.

11.11.

11.

GENERAL PURPOSE I/O

GENERAL PURPOSE I/OGENERAL PURPOSE I/O

GENERAL PURPOSE I/O ................................

................................................................

..................................................

....................................

.................. 49

4949

49

11.1.

GPIO

L

OGIC

L

EVELS

......................................................................................................................................... 50

11.2.

U

SING A

GPIO

P

AD AS

INPUT........................................................................................................................ 51

11.3.

U

SING A

GPIO

P

AD AS

OUTPUT .................................................................................................................... 51

11.4.

U

SING THE

RF

T

RANSMISSION

C

ONTROL

GPIO4.............................................................................................. 51

11.5.

U

SING THE

RFTXMON

O

UTPUT

GPIO5 .......................................................................................................... 52

U

SING THE

A

LARM

O

UTPUT

GPIO6................................................................................................................................... 53

11.6.

U

SING THE

B

UZZER

O

UTPUT

GPIO7................................................................................................................ 53

11.7.

M

AGNETIC

B

UZZER

C

ONCEPTS

......................................................................................................................... 54

11.7.1.

Short Description

.................................................................................................................................. 54

11.8.1 Frequency Behavior

................................................................................................................................... 55

11.7.2.

Power Supply Influence

....................................................................................................................... 55

11.7.3.

Warning

.................................................................................................................................................. 55

11.7.4.

Working Current Influence

.................................................................................................................. 56

11.8.

U

SING THE

T

EMPERATURE

M

ONITOR

F

UNCTION

............................................................................................... 56

11.8.1.

Short Description

.................................................................................................................................. 56

11.8.2.

Allowed GPIO

......................................................................................................................................... 56

11.9.

I

NDICATION OF

N

ETWORK

S

ERVICE

A

VAILABILITY

............................................................................................. 57

11.10.

RTC

B

YPASS

O

UT

........................................................................................................................................... 58

11.11.

DAC

C

ONVERTER

............................................................................................................................................ 59

11.11.1.

Description

......................................................................................................................................... 59

11.11.2.

Enabling DAC

..................................................................................................................................... 59

11.11.3.

Low Pass Filter Example

................................................................................................................. 60

11.12.

ADC

C

ONVERTER

............................................................................................................................................ 60

11.12.1.

Description

......................................................................................................................................... 60

11.12.2.

Using ADC Converter

........................................................................................................................ 61

11.13.

D

EBUG OF THE

GE864-QUAD

V2

/

GE864-DUAL

V2

IN

P

RODUCTION

....................................................... 61

12.

12.12.

12.

ASSEMBLY THE GE864

ASSEMBLY THE GE864ASSEMBLY THE GE864

ASSEMBLY THE GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 ON THE BOARD

DUAL V2 ON THE BOARDDUAL V2 ON THE BOARD

DUAL V2 ON THE BOARD ................................

................................................................

.............................................

..........................

............. 62

6262

62

12.1.

R

ECOMMENDED FOOT PRINT FOR THE APPLICATION

.......................................................................................... 63

12.2.

S

TENCIL

............................................................................................................................................................. 63

12.3.

PCB

PAD DESIGN

............................................................................................................................................... 64

12.4.

S

OLDER PASTE

................................................................................................................................................... 65

12.4.1.

GE865 Solder reflow................................................................................................................................ 66

13.

13.13.

13.

PACKING SYSTEM

PACKING SYSTEMPACKING SYSTEM

PACKING SYSTEM................................

................................................................

............................................................

........................................................

............................ 68

6868

68

13.1.

M

OISTURE SENSIBILITY

...................................................................................................................................... 69

14.

14.14.

14.

CONFORMITY ASSESSMEN

CONFORMITY ASSESSMENCONFORMITY ASSESSMEN

CONFORMITY ASSESSMENT ISSUES

T ISSUEST ISSUES

T ISSUES ................................

................................................................

..............................................................

............................................................

..............................70

7070

70

15.

15.15.

15.

SAFETY RECOMMENDATIO

SAFETY RECOMMENDATIOSAFETY RECOMMENDATIO

SAFETY RECOMMENDATIONS

NSNS

NS ................................

................................................................

.........................................

..................

......... 72

7272

72

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

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 GE864-QUAD V2 / GE864-DUAL V2 module.

1.2. Audience

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

implement their applications using our GE864-QUAD V2 / GE864-DUAL V2 module.

1.3. Contact Information, Support

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

manuals, contact Telit 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.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

1.4. Document Organization

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: “GE864-QUAD V2 / GE864-DUAL V2 Mechanical Dimensions”

Chapter 4: “GE864-QUAD V2 / GE864-DUAL V2 Module Connections” deals with the

pin out configuration and layout.

Chapter 5: “Hardware Commands” How to control 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 GE864-QUAD V2 / GE864-DUAL

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 GE864-QUAD V2 / GE864-DUAL 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 GE864-QUAD V2 / GE864-DUAL V2 on the application

board” Recommendations and specifics on how to mount the module on the user’s

board.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

1.5. Text Conventions

Danger

Danger Danger

Danger

–

This information MUST be followed or catastrophic equipment failure

This information MUST be followed or catastrophic equipment failure This information MUST be followed or catastrophic equipment failure

This information MUST be followed or catastrophic equipment failure

or bodily injury may occur.

or bodily injury may occur.or bodily injury may occur.

or bodily injury may occur.

Caution or Warning

Caution or Warning Caution or Warning

Caution or Warning

–

Alerts the user to important points about integratin

Alerts the user to important points about integratin Alerts the user to important points about integratin

Alerts the user to important points about integrating the

g the g the

g the

module, if these points are not followed, the module and end user equipment

module, if these points are not followed, the module and end user equipment module, if these points are not followed, the module and end user equipment

module, if these points are not followed, the module and end user equipment

may fail or malfunction.

may fail or malfunction.may fail or malfunction.

may fail or malfunction.

Tip or Information

Tip or Information Tip or Information

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

Provides advice and suggestions that may be useful when Provides advice and suggestions that may be useful when

Provides advice and suggestions that may be useful when

integrating the module.

integrating the module.integrating the module.

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

• Product description, 80331ST10074a

• SIM Holder Design Guides, 80000NT10001a

• AT Commands Reference Guide, 80000ST10025a

• Telit EVK2 User Guide, 1vv0300704

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

1.7. Document History

R

RR

R

RR

Re

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e

ee

ev

vv

v

vv

vi

ii

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ii

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oo

o

oo

on

nn

n

nn

n

D

DD

D

DD

Da

aa

a

aa

at

tt

t

tt

te

ee

e

ee

e

C

CC

C

CC

Ch

hh

h

hh

ha

aa

a

aa

an

nn

n

nn

ng

gg

g

gg

ge

ee

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es

ss

s

ss

s

ISSUE#0 2010-02-03 Release First ISSUE# 0

ISSUE#1 2010-03-29 Updated Par. 5.1, Par.6.1, Par.7.1, Par.9.2,

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

2. Overview

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

each one of them a proper hardware solution is suggested and eventually the wrong

solutions and common errors to be avoided are 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 GE864-QUAD V2 / GE864-DUAL V2 module. For

further hardware details that may not be explained in this document refer to the Telit

GE864-QUAD V2 / GE864-DUAL V2 Product Description document where all the

hardware information is reported.

NOTICE

NOTICENOTICE

NOTICE:

::

:

(EN) The integration of the GSM/GPRS GE864-QUAD V2 / GE864-DUAL V2 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, or

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.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

3. GE864-QUAD V2 / GE864-DUAL Mechanical

Dimensions

The Telit GE864-QUAD V2 / GE864-DUAL V2 module overall dimensions are:

• Length: 30 mm

• Width: 30 mm

• Thickness: 2,9 mm

• Weight: 4.2g

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

4. GE864-QUAD V2 / GE864-DUAL V2 Module Connections

4.1. PIN-OUT

The GE864-QUAD V2 / GE864-DUAL V2 uses 11x11 array BGA technology connection

Ball

BallBall

Ball

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

Internal Internal

Internal

PULL UP

PULL UPPULL UP

PULL UP

Type

TypeType

Type

Audio

AudioAudio

Audio

F9

F9F9

F9

AXE I Handsfree switching 100K CMOS 2.8V

G8

G8G8

G8

MIC_HF+ AI Handsfree mic. input; phase +, nom. level 3mVrms Audio

G9

G9G9

G9

MIC_MT- AI Handset mic.signal input; phase-, nom. level 50mVrms

Audio

G10

G10G10

G10

EAR_MT+ AO Handset earphone signal output, phase + Audio

J8

J8J8

J8

MIC_MT+ AI Handset mic.signal input; phase+, nom. level 50mVrms

Audio

J9

J9J9

J9

MIC_HF- AI Handsfree mic.input; phase -, nom. level 3mVrms Audio

J10

J10J10

J10

EAR_HF- AO Handsfree ear output, phase - Audio

H9

H9H9

H9

EAR_MT- AO Handset earphone signal output, phase - Audio

H10

H10H10

H10

EAR_HF+ AO Handsfree ear output, phase + Audio

SIM card interface

SIM card interfaceSIM card interface

SIM card interface

C10

C10C10

C10

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

C11

C11C11

C11

SIMIN I External SIM signal - Presence (active low)

Pull up 47K

1,8 / 3V

D4

D4D4

D4

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

D10

D10D10

D10

SIMIO I/O External SIM signal - Data I/O Pull up

4.7K 1,8 / 3V

E9

E9E9

E9

SIMRST O External SIM signal – Reset 1,8 / 3V

Trace

TraceTrace

Trace

D11

D11D11

D11

TX_TRACE O TX Data for debug monitor CMOS 2.8V

F10

F10F10

F10

RX_TRACE I RX Data for debug monitor CMOS 2.8V

H4

H4H4

H4

SERVICE I

Service pin shall be used to upgrade the module

from ASC1 (RX_TRACE, TX_TRACE). The pin

shall be tied low to enable the feature only in

case of a SW Update activity. It is required, for

debug purpose, to be connected

to a test pad on the final application.

CMOS 2.8V

Prog. / Data + HW Flow Control

Prog. / Data + HW Flow ControlProg. / Data + HW Flow Control

Prog. / Data + HW Flow Control

B6

B6B6

B6

C125/RING O Output for Ring indicator signal (RI) to DTE CMOS 2.8V

B7

B7B7

B7

C108/DTR I Input for Data terminal ready signal (DTR) from DTE CMOS 2.8V

D9

D9D9

D9

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

E7

E7E7

E7

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

E11

E11E11

E11

C107/DSR O Output for Data set ready signal (DSR) to DTE CMOS 2.8V

F7

F7F7

F7

C105/RTS I Input for Request to send signal (RTS) from DTE CMOS 2.8V

F6

F6F6

F6

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

H8

H8H8

H8

C104/RXD O Serial data output to DTE CMOS 2.8V

DA

DADA

DAC and ADC

C and ADCC and ADC

C and ADC

C7

C7C7

C7

DAC_OUT AO Digital/Analog converter output D/A

J11

J11J11

J11

ADC_IN1 AI Analog/Digital converter input A/D

H11

H11H11

H11

ADC_IN2 AI Analog/Digital converter input A/D

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

Ball

BallBall

Ball

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

Internal Internal

Internal

PULL UP

PULL UPPULL UP

PULL UP

Type

TypeType

Type

Miscellaneous Functions

Miscellaneous FunctionsMiscellaneous Functions

Miscellaneous Functions

A2

A2A2

A2

RESET* I Reset input

D8

D8D8

D8

STAT_LED O Status indicator led CMOS 1.8V

E2

E2E2

E2

VRTC AO VRTC Power

J5

J5J5

J5

ON_OFF* I

Input command for switching power ON or OFF (toggle

command). The pulse to be sent to the GE864-QUAD V2

must be equal or greater than 1 second.

Pull up 47K

Pull up to VBATT

L8

L8L8

L8

PWRMON I/O PWRMON CMOS 2.8V

L4

L4L4

L4

GSM Antenna O Antenna output – 50 ohm RF

Telit GPIO

Telit GPIOTelit GPIO

Telit GPIO / DVI

/ DVI / DVI

/ DVI

C1

C1C1

C1

GPIO_01 I/O GPIO_01 CMOS 2.8V

E6

E6E6

E6

GPIO_02 / JDR I/O GPIO_02 / JDR CMOS 2.8V

C2

C2C2

C2

GPIO_03 I/O GPIO_03 CMOS 2.8V

B3

B3B3

B3

GPIO_04 / TX_DISABLE I/O GPIO_04 / TX_DISABLE CMOS 2.8V

K8

K8K8

K8

GPIO_05 / RFTXMON I/O Telit GPIO05 Configurable GPIO / Transmitter ON

monitor CMOS 2.8V

B5

B5B5

B5

GPIO_06 / ALARM I/O Telit GPIO06 Configurable GPIO / ALARM CMOS 2.8V

L9

L9L9

L9

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

K11

K11K11

K11

GPIO_08 I/O GPIO_08 CMOS 2.8V

C9

C9C9

C9

GPIO_09 I/O GPIO_09 CMOS 2.8V

H3

H3H3

H3

GPIO_10 / DVI_TX I/O GPIO_10 / DVI_TX CMOS 2.8V

K7

K7K7

K7

DVI_RX I/O DVI_RX CMOS 2.8V

D7

D7D7

D7

DVI_CLK I/O DVI_CLK CMOS 2.8V

H5

H5H5

H5

DVI_WA0 I/O DVI_WA0 CMOS 2.8V

Power Supply

Power SupplyPower Supply

Power Supply

J1

J1J1

J1

VBATT - Main power supply Power

K1

K1K1

K1

VBATT - Main power supply Power

J2

J2J2

J2

VBATT - Main power supply Power

K2

K2K2

K2

VBATT - Main power supply Power

A1

A1A1

A1

GND - Ground Power

A11

A11A11

A11

GND - Ground Power

D6

D6D6

D6

GND - Ground Power

F1

F1F1

F1

GND - Ground Power

F11

F11F11

F11

GND - Ground Power

H

HH

H1

11

1

GND - Ground Power

H2

H2H2

H2

GND - Ground Power

J3

J3J3

J3

GND - Ground Power

K3

K3K3

K3

GND - Ground Power

K4

K4K4

K4

GND - Ground Power

K5

K5K5

K5

GND - Ground Power

K6

K6K6

K6

GND - Ground Power

L1

L1L1

L1

GND - Ground Power

L2

L2L2

L2

GND - Ground Power

L3

L3L3

L3

GND - Ground Power

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

Ball

BallBall

Ball

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

Internal Internal

Internal

PULL UP

PULL UPPULL UP

PULL UP

Type

TypeType

Type

L6

L6L6

L6

GND - Ground Power

L11

L11L11

L11

GND - Ground Power

RESERVED

RESERVEDRESERVED

RESERVED

A3

A3A3

A3

- - Reserved

A4

A4A4

A4

- - Reserved

A5

A5A5

A5

- - Reserved

A6

A6A6

A6

- - Reserved

A7

A7A7

A7

- - Reserved

A8

A8A8

A8

- - Reserved

A9

A9A9

A9

- - Reserved

A10

A10A10

A10

- - Reserved

B1

B1B1

B1

- - Reserved

B2

B2B2

B2

- - Reserved

B4

B4B4

B4

- - Reserved

B8

B8B8

B8

- - Reserved

B9

B9B9

B9

- - Reserved

B10

B10B10

B10

- - Reserved

B11

B11B11

B11

- - Reserved

C3

C3C3

C3

- - Reserved

C4

C4C4

C4

- - Reserved

C5

C5C5

C5

- - Reserved

C6

C6C6

C6

- - Reserved

C8

C8C8

C8

- - Reserved

D1

D1D1

D1

- - Reserved

D2

D2D2

D2

- - Reserved

D3

D3D3

D3

- - Reserved

D5

D5D5

D5

- - Reserved

E1

E1E1

E1

- - Reserved

E3

E3E3

E3

- - Reserved

E4

E4E4

E4

- - Reserved

E5

E5E5

E5

- - Reserved

E8

E8E8

E8

- - Reserved

E10

E10E10

E10

- - Reserved

F2

F2F2

F2

- - Reserved

F3

F3F3

F3

- - Reserved

F4

F4F4

F4

- - Reserved

F5

F5F5

F5

- - Reserved

F8

F8F8

F8

- - Reserved

G1

G1G1

G1

- - Reserved

G2

G2G2

G2

- - Reserved

G3

G3G3

G3

- - Reserved

G4

G4G4

G4

- - Reserved

G5

G5G5

G5

- - Reserved

G6

G6G6

G6

- - Reserved

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

Ball

BallBall

Ball

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

Internal Internal

Internal

PULL UP

PULL UPPULL UP

PULL UP

Type

TypeType

Type

G7

G7G7

G7

- - Reserved

G11

G11G11

G11

- - Reserved

H6

H6H6

H6

- - Reserved

H7

H7H7

H7

- - Reserved

J4

J4J4

J4

- - Reserved

J6

J6J6

J6

- - Reserved

J7

J7J7

J7

- - Reserved

K9

K9K9

K9

- - Reserved

K10

K10K10

K10

- - Reserved

L5

L5L5

L5

- - Reserved

L7

L7L7

L7

- - Reserved

L10

L10L10

L10

- - Reserved

NOTE:

NOTE:NOTE:

NOTE:

The GE864-QUAD V2 / GE864-DUAL V2 Modules has only one DVI ports on the system

interface.

NOTE:

NOTE:NOTE:

NOTE:

Reserved pins must not be connected.

NOTE:

NOTE:NOTE:

NOTE:

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

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

NOTE

NOTENOTE

NOTE:

::

:

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

following pins:

Ball

BallBall

Ball

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

J

JJ

J1

11

1, J

, J, J

, J2

22

2, K1, K2

, K1, K2, K1, K2

, K1, K2

VBATT Main power supply

A1, A11, D6, F1, F11, H1,

A1, A11, D6, F1, F11, H1, A1, A11, D6, F1, F11, H1,

A1, A11, D6, F1, F11, H1,

H2, J3, K3, K4, K5

H2, J3, K3, K4, K5H2, J3, K3, K4, K5

H2, J3, K3, K4, K5, K6, L1,

, K6, L1, , K6, L1,

, K6, L1,

L2, L3, L6, L11

L2, L3, L6, L11L2, L3, L6, L11

L2, L3, L6, L11

GND Ground

E7

E7E7

E7

C103/TXD Serial data input (TXD) from DTE

H8

H8H8

H8

C104/RXD Serial data output to DTE

F7

F7F7

F7

C105/RTS Input for Request to send signal (RTS) from DTE

J5

J5J5

J5

ON/OFF* Input command for switching power ON or OFF (toggle command).

A2

A2A2

A2

RESET* Reset input

F10

F10F10

F10

RX_TRACE RX Data for debug monitor

D11

D11D11

D11

TX_TRACE TX Data for debug monitor

H4

H4H4

H4

SERVICE SERVICE connection

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

4.1.1.

4.1.1.4.1.1.

4.1.1. BGA Balls Layout

BGA Balls LayoutBGA Balls Layout

BGA Balls Layout

TOP VIEW

TOP VIEWTOP VIEW

TOP VIEW

A

AA

A

B

BB

B

C

CC

C

D

DD

D

E

EE

E

F

FF

F

G

GG

G

H

HH

H

J

JJ

J

K

KK

K

L

LL

L

1

11

1

GND - GPIO_01 - - GND - GND VBATT VBATT GND

2

22

2

RESET* - GPIO_03 - VRTC - - GND VBATT VBATT GND

3

33

3

-

GPIO_04 /

TX_DISABL

E

- - - _ - GPIO_10 /

DVI_TX GND GND GND

4

44

4

-- - - SIMVCC - - - SERVICE - GND GSM

Antenna

5

55

5

- GPIO_06 /

ALARM - - - - -

DVI_WA0

ON_OFF* GND -

6

66

6

-

C125/RING

- GND GPIO_02 /

JDR C106 / CTS

- - - GND GND

7

77

7

- C108 / DTR

DAC_OUT DVI_CLK C103 / TXD

C105 / RTS

- - - DVI_RX -

8

88

8

- - - STAD_ LED

- - MIC_HF+ C104 / RXD

MIC_MT+ GPIO_05 /

RFTXMON PWRMON

9

99

9

- - GPIO_09 C109 / DCD

SIMRST AXE MIC_MT- EAR_MT- MIC_HF- - GPIO_07 /

BUZZER

10

1010

10

- - SIMCLK SIMIO

- RX_TRACE

EAR_MT+ EAR_HF+ EAR_HF- - -

11

1111

11

GND - SIMIN

TX_TRACE

C107 / DSR

GND - ADC_IN2 ADC_IN1 GPIO_08 GND

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

AUDIO Signals balls

SIM CARD interface balls

TRACE Signals balls

Prog. / data + Hw Flow Control signals balls

ADC signals balls

MISCELLANEOUS functions signals balls

TELIT GPIO balls

POWER SUPPLY VBATT balls

POWER SUPPLY GND balls

RESERVED

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

5. Hardware Commands

5.1. Turning ON the GE864-QUAD V2 / GE864-DUAL V2

To turn the GE864-QUAD V2 / GE864-DUAL V2 on, the pad ON# must be tied low for

at least 1000ms and then released. A pulse duration less than 1000ms should also

start the power on procedure, but this is not guaranteed.

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

A simple circuit to do it is:

TIP:

TIP:TIP:

TIP:

To check if the device has powered on, the hardware line PWRMON must be

monitored. After 1000ms the line raised up the device could be considered powered

on.

NOTE:

NOTE:NOTE:

NOTE:

Do not 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 GE864-QUAD V2 / GE864-DUAL V2

power regulator and improper power on/off of the module. The line ON# must be

connected only in open collector configuration.

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

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

NOTE

NOTENOTE

NOTE: When the power supply voltage is lower than 3.4V, to turn ON the module, the

pad ON# must be tied low for at least 3 seconds.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

For example:

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

microcontroller (uP_OUT1):

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

A flow chart with proper turn on procedure is detailed below:

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

5.2. Turning OFF the GE864-QUAD V2 / GE864-DUAL V2

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

• by software command (see GE864-QUAD V2 / GE864-DUAL V2 Software

User Guide)

• 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 GE864-QUAD V2 / GE864-DUAL via pin ON#, this

must be tied low for at least 1000ms and then released.The same circuitry and timing for the

power on shall be used.The device shuts down after the release of the ON# pin.

The following flow chart shows the proper turnoff procedure:

TIP:

TIP:TIP:

TIP:

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

monitored. When PWRMON goes low, then the device has powered off.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

5.2.1. Hardware Unconditional Restart

WARNING:

The hardware unconditional Restart must not be used during normal operation of the

device since it does not detach the device from the network. It shall be kept as an

emergency exit procedure to be done in the rare case that the device gets stacked

waiting for some network or SIM responses.

To unconditionally Restart the GE864-QUAD V2 / GE864-DUAL V2, the pad RESET#

must be tied low for at least 200 ms and then released.

The maximum current that can be drained from the RESET# pad is 0,15 mA.

A simple circuit to do it is:

NOTE:

NOTE:NOTE:

NOTE:

Do not use any pull up resistor on the RESET* line nor any totem pole digital output.

Using pull up resistor may cause latch up problems on the GE864-QUAD V2 / GE864-

DUAL V2 power regulator and improper functioning of the module. The line RESET*

must be connected only in open collector configuration.

TIP:

TIP:TIP:

TIP:

The unconditional hardware reboot must always be implemented on the boards and

the software must use it as an emergency exit procedure.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

In the following flow chart is detailed the proper restart procedure:

For example:

1- Let us assume you need to drive the RESET# pad with a totem pole output of a

+3/5 V microcontroller (uP_OUT2):

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

6. Power Supply

The power supply circuitry and board layout are a very important part in the full

product design and they strongly reflect on the product overall performances, hence

read carefully the following requirements and guidelines for a proper design.

6.1. Power Supply Requirements

Condition

ConditionCondition

Condition

Value

ValueValue

Value

Nominal Supply Voltage

3.80 V

Normal operating Voltage Range

3.40 V - 4.20 V

Extended operating Voltage Range

3.22 V – 4.50 V

The GE864-QUAD V2 / GE864-DUAL V2 power consumptions are:

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2

DUAL V2DUAL V2

DUAL V2

Mode

ModeMode

Mode

Average (mA)

Average (mA)Average (mA)

Average (mA)

Mode description

Mode descriptionMode description

Mode description

SWITCHED OFF

SWITCHED OFFSWITCHED OFF

SWITCHED OFF

Switched Off <62 uA Module supplied but Switched Off

IDLE mode

IDLE modeIDLE mode

IDLE mode

AT+CFUN=1 19.0 Normal mode: full functionality of the module

AT+CFUN=4 18.0 Disabled TX and RX; module is not registered on the network

3.9 Paging Multiframe 2

2.9 Paging Multiframe 4

2.1 Paging Multiframe 6

1.9 Paging Multiframe 8

AT+CFUN=0 or =5

1.6 Paging Multiframe 9

CSD TX and RX mode

CSD TX and RX modeCSD TX and RX mode

CSD TX and RX mode

GSM900 CSD PL5 300

DCS1800 CSD PL0 200

GSM VOICE CALL

GPRS (class 10) 1TX

GPRS (class 10) 1TXGPRS (class 10) 1TX

GPRS (class 10) 1TX

GSM900 PL5 260

DCS1800 PL0 170

GPRS Sending data mode

GPRS

GPRSGPRS

GPRS (class 10) 2TX

(class 10) 2TX (class 10) 2TX

(class 10) 2TX

GSM900 PL5 470

DCS1800 PL0 300

GPRS Sending data mode

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

The GSM system is made in a way that the RF transmission is not continuous but it is

packed into bursts at a base frequency of about 216 Hz. The relative current peaks

can be as high as about 2A. Therefore the power supply has to be designed in order

to withstand with these current peaks without big voltage drops; this means that both

the electrical design and the board layout must be designed for this current flow.

If the layout of the PCB is not well designed, then a strong noise floor is generated on

the ground and the supply; this will reflect on all the audio paths producing an

audible and annoying noise at 216 Hz; if the voltage drop during the peak current

absorption is too much, then the device may even shutdown as a consequence of the

supply voltage drop.

TIP

TIPTIP

TIP:

::

:

The power supply must be designed so that it is capable of a peak current output of

at least 2 A.

TIP

TIPTIP

TIP: the supply voltage is directly measured between VBATT and GND balls. It must

stay within the Wide Supply Voltage tolerant range including any drop voltage and

overshoot voltage (during the slot tx, for example).

NOTE

NOTENOTE

NOTE: The Operating Voltage Range MUST never be exceeded also in power off

condition; care must be taken in order to fulfill min/max voltage requirement

NOTE

NOTENOTE

NOTE: When the power supply voltage is lower than 3.4V, to turn ON the module, the

pad ON# must be tied low for at least 3 seconds.

6.2. General Design Rules

The principal guidelines for the Power Supply Design embrace three different design

steps:

• the electrical design

• the thermal design

• the PCB layout.

6.2.1. Electrical Design Guidelines

The electrical design of the power supply depends strongly from the power source

where this power is drained. We will distinguish them into three categories:

• +5V input (typically PC internal regulator output)

• +12V input (typically automotive)

• Battery

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

6.2.1.1.

6.2.1.1.6.2.1.1.

6.2.1.1. +

++

+5V input Source Power Supply Design Guidelines

5V input Source Power Supply Design Guidelines5V input Source Power Supply Design Guidelines

5V input Source Power Supply Design Guidelines

• The desired output for the power supply is 3.8V, hence there is no big

difference between the input source and the desired output. A linear

regulator can be used. A switching power supply will not be suited

because of the low drop out requirements.

• When using a linear regulator, a proper heat sink shall be provided in

order to dissipate the power generated.

• A Bypass low ESR capacitor of adequate capacity must be provided in

order to cut the current absorption peaks close to the GE864-QUAD V2 /

GE864-DUAL V2, a 100µF tantalum capacitor is usually suited.

• Make sure the low ESR capacitor on the power supply output (usually a

tantalum one) is rated at least 10V.

• A protection diode can be inserted close to the power input, in order to

save the GE864-QUAD V2 / GE864-DUAL V2 from power polarity inversion.

An example of linear regulator with 5V input is:

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

6.2.1.2.

6.2.1.2.6.2.1.2.

6.2.1.2. +

++

+12V input Source Power Supply Design Guidelines

12V input Source Power Supply Design Guidelines12V input Source Power Supply Design Guidelines

12V input Source Power Supply Design Guidelines

• The desired output for the power supply is 3.8V, hence, due to the big

difference between the input source and the desired output, a linear

regulator is not suited and shall not be used. A switching power supply

will be preferable because of its better efficiency especially with the 2A

peak current load represented by the GE864-QUAD V2 / GE864-DUAL V2.

• When using a switching regulator, a 500kHz (or more) switching

frequency regulator is preferable, because of its smaller inductor size and

its faster transient response. This allows the regulator to respond quickly

to the current peaks absorption.

• In any case the frequency and switching design selection is related to the

application to be developed, due to the fact that the switching frequency

could also generate EMC interferences.

• As far as car PB battery, the input voltage can rise up to 15.8V. This must

be kept in mind when choosing components: all components in the power

supply must withstand this voltage.

• A Bypass low ESR capacitor of adequate capacity must be provided, in

order to cut the current absorption peaks. A 100µF tantalum capacitor is

typically used.

• Make sure the low ESR capacitor on the power supply output (usually a

tantalum one) is rated at least 10V.

• As far as car applications, a spike protection diode must be inserted close

to the power input, in order to clean the supply from spikes.

• A protection diode can be inserted close to the power input, in order to

save the GE864-QUAD V2 / GE864-DUAL V2 from power polarity inversion.

This can be the same diode used for spike protection.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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An example of switching regulator with 12V input is in the schematic below (split in 2

parts):

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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6.2.1.3.

6.2.1.3.6.2.1.3.

6.2.1.3. Battery Source Power Supply Design Guidelines

Battery Source Power Supply Design GuidelinesBattery Source Power Supply Design Guidelines

Battery Source Power Supply Design Guidelines

The desired nominal output for the power supply is 3.8V and the maximum voltage

allowed is 4.5V. A single 3.7V Li-Ion cell battery type is suited for supplying the power

to the Telit GE864-QUAD V2 / GE864-DUAL V2 module.

CAUTION:

CAUTION:CAUTION:

CAUTION:

The three cells Ni/Cd or Ni/MH 3,6 V Nom. Battery types or 4V PB types MUST NOT

BE USED DIRECTLY since their maximum voltage can rise over the absolute

maximum voltage for the GE864-QUAD V2 / GE864-DUAL V2 and damage it.

CAUTION:

CAUTION:CAUTION:

CAUTION:

DO NOT USE any Ni-Cd, Ni-MH, and Pb battery types directly connected with GE864-

QUAD V2 / GE864-DUAL V2. Their use can lead to overvoltage on the GE864-QUAD V2

/ GE864-DUAL V2 and damage it. USE ONLY Li-Ion battery types.

A Bypass low ESR capacitor of adequate capacity must be provided, in order to cut

the current absorption peaks. A 100µF tantalum capacitor is typically used.

Make sure the low ESR capacitor (usually a tantalum one) is rated at least 10V.

A protection diode can be inserted close to the power input, in order to save the

GE864-QUAD V2 / GE864-DUAL V2 from power polarity inversion. Otherwise the

battery connector must be done in a way to avoid polarity inversions when connecting

the battery.

The battery capacity must be at least 500mAh in order to withstand the current peaks

of 2A; the suggested capacity is from 500mAh to 1000mAh.

6.2.2. Thermal Design Guidelines

The thermal design for the power supply heat sink must be done with the following

specifications:

• Average current consumption during transmission @PWR level max:

500mA

• Average current consumption during transmission @ PWR level min:

100mA

• Average current during Power Saving (CFUN=5): from 1.6 to 3.9mA

• Average current during idle (Power Saving disabled): 19mA

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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NOTE

NOTENOTE

NOTE:

::

:

The average consumption during transmissions depends on the power level at which

the device is requested to transmit by the network. The average current consumption

hence varies significantly.

Considering the very low current during idle, especially if Power Saving function is

enabled, it is possible to consider from the thermal point of view that the device

absorbs current significantly only during calls.

If we assume that the device stays into transmission for short periods of time (let us

say few minutes) and then remains for a quite long time in idle (let us say one hour),

then the power supply has always the time to cool down between the calls, and the

heat sink could be smaller than the calculated one for 500mA maximum RMS

current, or even could be the simple chip package (no heat sink).

Moreover, in the average network conditions, the device is requested to transmit at a

lower power level than the maximum, hence the current consumption will be less

than 500mA, usually around 150mA.

For these reasons the thermal design is rarely a concern and the simple ground

plane where the power supply chip is placed grants a good thermal condition to avoid

overheating as well.

As far as the heat generated by the GE864-QUAD V2 / GE864-DUAL V2, you can

consider it to be during transmissions of 1W max during CSD/VOICE calls and 2W

max during class10 GPRS upload.

This generated heat will be mostly conducted to the ground plane under the GE864-

QUAD V2 / GE864-DUAL V2; you must ensure that your application can dissipate it.

6.2.3. Power Supply PCB Layout Guidelines

As seen on the electrical design guidelines the power supply shall have a low ESR

capacitor on the output to cut the current peaks and a protection diode on the input

to protect the supply from spikes and polarity inversion. The placement of these

components is crucial for the correct working of the circuitry. A misplaced

component can be useless or can even decrease the power supply performances.

• The Bypass low ESR capacitor must be placed close to the Telit GE864-

QUAD V2 / GE864-DUAL V2 power input pads or in the case the power

supply is a switching type it can be placed close to the inductor to cut the

ripple provided the PCB trace from the capacitor to the GE864-QUAD V2 /

GE864-DUAL V2 is wide enough to ensure a dropless connection even

during the 2A current peaks.

• The protection diode must be placed close to the input connector where

the power source is drained.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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• The PCB traces from the input connector to the power regulator IC must

be wide enough to ensure no voltage drops occur when the 2A current

peaks are absorbed. Note that this is not made in order to save power

loss but especially to avoid the voltage drops on the power line at the

current peaks frequency of 216 Hz that will reflect on all the components

connected to that supply, introducing the noise floor at the burst base

frequency. For this reason while a voltage drop of 300-400 mV may be

acceptable from the power loss point of view, the same voltage drop may

not be acceptable from the noise point of view. If your application does not

have audio interface but only uses the data feature of the Telit GE864-

QUAD V2 / GE864-DUAL V2, then this noise is not so disturbing and power

supply layout design can be more forgiving.

• The PCB traces to the GE864-QUAD V2 / GE864-DUAL V2 and the Bypass

capacitor must be wide enough to ensure no significant voltage drops

occur when the 2A current peaks are absorbed. This is for the same

reason as previous point. Try to keep this trace as short as possible.

• The PCB traces connecting the Switching output to the inductor and the

switching diode must be kept as short as possible by placing the inductor

and the diode very close to the power switching IC (only for switching

power supply). This is done in order to reduce the radiated field (noise) at

the switching frequency (100-500 kHz usually).

• The use of a good common ground plane is suggested.

• The placement of the power supply on the board must be done in such a

way to guarantee that the high current return paths in the ground plane

are not overlapped to any noise sensitive circuitry as the microphone

amplifier/buffer or earphone amplifier.

• The power supply input cables must be kept separate from noise sensitive

lines such as microphone/earphone cables.

6.2.4. Parameters for ATEX Applications

In order to integrate the Telit’s GE864-QUAD V2 / GE864-DUAL V2 module into an

ATEX application, the appropriate reference standard IEC EN xx and integrations

shall be followed.

Below are listed parameters and useful information to integrate the module in your

application:

• Total capacity: 27.45 uF

• Total inductance: 55.20 nH

• No voltage upper than supply voltage is present in the module.

• No step-up converters are present in the module.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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• In abnormal conditions, the maximum RF output power may be up to 34

dBm.

For this particular application, we recommend the customer to involve TTSC (Telit

Technical Support Center) in the design phase of the application.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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7. Antenna

The antenna connection and board layout design are the most important part in the

full product design and they strongly reflect on the product overall performances,

hence read carefully and follow the requirements and the guidelines for a proper

design.

7.1. GSM Antenna Requirements

As suggested on the Product Description the antenna for a Telit GE864-QUAD V2 /

GE864-DUAL V2 device shall fulfill the following requirements:

ANTENNA REQUIREMENTS

ANTENNA REQUIREMENTSANTENNA REQUIREMENTS

ANTENNA REQUIREMENTS

Frequency range

Frequency rangeFrequency range

Frequency range

Depending by frequency band(s) provided by the network operator,

the customer shall use the most suitable antenna for that/those

band(s)

Bandwidth

BandwidthBandwidth

Bandwidth

for GE

for GEfor GE

for GE864

864864

864-

--

-QUAD V2

QUAD V2QUAD V2

QUAD V2

70 MHz in GSM850, 80 MHz in GSM900, 170 MHz in DCS and 140

MHz PCS band

Bandwidth

Bandwidth Bandwidth

Bandwidth

for GE

for GEfor GE

for GE8

88

864

6464

64-

--

-DUAL V2

DUAL V2DUAL V2

DUAL V2

80 MHz in GSM900 and 170 MHz in DCS

Gain

GainGain

Gain

Gain < 1,4dBi in GSM 850 & 900

and < 3,0dBi DCS & PCS

Impedance

ImpedanceImpedance

Impedance

50 •

Input power

Input powerInput power

Input power

> 2 W peak power

VSWR absolute max

VSWR absolute maxVSWR absolute max

VSWR absolute max

<= 10:1

VSWR recommended

VSWR recommendedVSWR recommended

VSWR recommended

<= 2:1

Furthermore if the device is developed for the US market and/or Canada market, it

shall comply to the FCC and/or IC approval requirements:

This device is to be used only for mobile and fixed application. The antenna(s) used

for this transmitter must be installed to provide a separation distance of at least 20

cm from all persons and must not be co-located or operating in conjunction with any

other antenna or transmitter. End-Users must be provided with transmitter

operation conditions for satisfying RF exposure compliance. OEM integrators must

ensure that the end user has no manual instructions to remove or install the GE864-

QUAD V2 / GE864-DUAL V2 module. Antennas used for this OEM module must not

exceed 3dBi gain for mobile and fixed operating configurations.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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7.2. GSM Antenna – Installation Guidelines

• Install the antenna in a place covered by the GSM signal.

• The Antenna must be installed to provide a separation distance of at least

20 cm from all persons and must not be co-located or operating in

conjunction with any other antenna or transmitter;

• Antenna shall not be installed inside metal cases

• Antenna shall be installed also according Antenna manufacturer

instructions.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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8. Logic Level Specifications

Where not specifically stated, all the interface circuits work at 2.8V CMOS logic

levels. The following table shows the logic level specifications used in the Telit

GE864-QUAD V2 / GE864-DUAL V2 interface circuits:

Absolute Maximum R

Absolute Maximum RAbsolute Maximum R

Absolute Maximum Ratings

atings atings

atings –

Not Functional

Not FunctionalNot Functional

Not Functional

Parameter

ParameterParameter

Parameter

Min

MinMin

Min

Max

MaxMax

Max

Input level on any

digital pin when on

-0.3V +3.1V

Input voltage on

analog pins when on

-0.3V +3.0 V

Operating Range

Operating Range Operating Range

Operating Range – Interface L

Interface L Interface L

Interface Levels (2.8V CMOS)

evels (2.8V CMOS)evels (2.8V CMOS)

evels (2.8V CMOS)

Level

LevelLevel

Level

Min

MinMin

Min

Max

MaxMax

Max

Input high level 2.1V 3.1V

Input low level 0V 0.5V

Output high level 2.2V 3.0V

Output low level 0V 0.35V

For 1,8V signals:

Operating Range

Operating Range Operating Range

Operating Range – Interface Levels (1.8V CMOS)

Interface Levels (1.8V CMOS) Interface Levels (1.8V CMOS)

Interface Levels (1.8V CMOS)

Level

LevelLevel

Level

Min

MinMin

Min

Max

MaxMax

Max

Input high level 1.6V 2.2V

Input low level 0V 0.4V

Output high level 1,65V 2.2V

Output low level 0V 0.35V

C

CC

Current characteristics

urrent characteristicsurrent characteristics

urrent characteristics

Level

LevelLevel

Level

Typical

TypicalTypical

Typical

Output Current 1mA

Input Current 1uA

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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8.1. Reset Signal

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

I/O

I/OI/O

I/O

Ball

BallBall

Ball Number

Number Number

Number

RESET Reset I A2

RESET is used to reset the GE864-QUAD V2 / GE864-DUAL V2 modules. Whenever

this signal is pulled low, the GE864-QUAD V2 / GE864-DUAL V2 is reset. When the

device is reset it stops any operation. After the release of the reset GE864-QUAD V2 /

GE864-DUAL V2 is unconditionally shut down, without doing any detach operation

from the network where it is registered. This behavior is not a proper shut down

because any GSM device is requested to issue a detach request on turn off. For this

reason the Reset signal must not be used to normally shutting down the device, but

only as an emergency exit in the rare case the device remains stuck waiting for some

network response.

The RESET is internally controlled on start-up to achieve always a proper power-on

reset sequence, so there is no need to control this pin on start-up. It may only be

used to reset a device already on that is not responding to any command.

NOTE:

NOTE:NOTE:

NOTE:

Do not use this signal to power off the GE864-QUAD V2 / GE864-DUAL V2. Use the

ON/OFF signal to perform this function or the AT#SHDN command.

Reset Signal Operating

Reset Signal Operating Reset Signal Operating

Reset Signal Operating L

LL

Levels:

evels:evels:

evels:

Signal

SignalSignal

Signal

Min

MinMin

Min

Max

MaxMax

Max

RESET Input high 2.0V* 2.2V

RESET Input low 0V 0.2V

* this signal is internally pulled up so the pin can be left floating if not used.

If unused, this signal may be left unconnected. If used, then it must always be

must always be must always be

must always be

connected with an open collector transistor

connected with an open collector transistorconnected with an open collector transistor

connected with an open collector transistor, to permit to the internal circuitry the

power on reset and under voltage lockout functions.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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9. Serial Ports

The serial port on the Telit GE864-QUAD V2 / GE864-DUAL V2 is the core of the

interface between the module and OEM hardware.

2 serial ports are available on the module:

• MODEM SERIAL PORT

• MODEM SERIAL PORT 2 (TRACE for debug)

9.1. MODEM SERIAL PORT

Several configurations can be designed for the serial port on the OEM hardware, but

the most common are:

• RS232 PC com port

• microcontroller UART @ 2.8V – 3V (Universal Asynchronous Receive

Transmit)

• microcontroller UART@ 5V or other voltages different from 2.8V

Depending from the type of serial port on the OEM hardware a level translator circuit

may be needed to make the system work. The only configuration that does not need a

level translation is the 2.8V UART.

The serial port on the GE864-QUAD V2 / GE864-DUAL V2 is a +2.8V UART with all the

7 RS232 signals. It differs from the PC-RS232 in the signal polarity (RS232 is

reversed) and levels. The levels for the GE864-QUAD V2 / GE864-DUAL V2 UART are

the CMOS levels:

Absolute Maximum Ratings

Absolute Maximum Ratings Absolute Maximum Ratings

Absolute Maximum Ratings –Not Functional

Not FunctionalNot Functional

Not Functional

Parameter

ParameterParameter

Parameter

Min

MinMin

Min

Max

MaxMax

Max

Input level on any

digital pad when on

-0.3V +3.1V

Input voltage on

analog pads when on

-0.3V +3.0 V

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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Operating Range

Operating Range Operating Range

Operating Range – Interface levels (2.8V CMOS)

Interface levels (2.8V CMOS) Interface levels (2.8V CMOS)

Interface levels (2.8V CMOS)

Level

LevelLevel

Level

Min

MinMin

Min

Max

MaxMax

Max

Input high level VIH 2.1V 3.1V

Input low level VIL 0V 0.5V

Output high level VOH 2.2V 3.0V

Output low level VOL 0V 0.35V

The table below shows the signals of the GE864-QUAD V2 / GE864-DUAL V2 serial

port:

RS232 Pin

RS232 Pin RS232 Pin

RS232 Pin

Number

NumberNumber

Number

Signa

SignaSigna

Signal

ll

l

GE864

GE864GE864

GE864-

--

-

QUAD V2 /

QUAD V2 / QUAD V2 /

QUAD V2 /

GE864

GE864GE864

GE864-

--

-

DUAL V2

DUAL V2DUAL V2

DUAL V2

Pad

Pad Pad

Pad

Number

NumberNumber

Number

Name

NameName

Name

Usage

UsageUsage

Usage

1 DCD –

dcd_uart D9 Data Carrier Detect Output from the GE864-QUAD V2 / GE864-DUAL V2 that

indicates the carrier presence

2 RXD –

tx_uart H8 Transmit line *see Note Output transmit line of GE864-QUAD V2 / GE864-DUAL V2

UART

3 TXD –

rx_uart E7 Receive line *see Note Input receive of the GE864-QUAD V2 / GE864-DUAL V2

UART

4 DTR –

dtr_uart B7 Data Terminal Ready Input to the GE864-QUAD V2 / GE864-DUAL V2 that

controls the DTE READY condition

5

GND A1,F1, H1 L1,

H2, L2, J3,

K3….

Ground

ground

6 DSR –

dsr_uart E11 Data Set Ready Output from the GE864-QUAD V2 / GE864-DUAL V2 that

indicates the module is ready

7 RTS –rts_uart F7 Request to Send Input to the GE864-QUAD V2 / GE864-DUAL V2 that

controls the Hardware flow control

8 CTS – cts_uart

F6 Clear to Send Output from the GE864-QUAD V2 / GE864-DUAL V2 that

controls the Hardware flow control

9 RI – ri_uart B6 Ring Indicator Output from the GE864-QUAD V2 / GE864-DUAL V2 that

indicates the incoming call condition

*

**

*NOTE:

NOTE:NOTE:

NOTE:

According to V.24, RX/TX signal names are referred to the application side, therefore

on the GE864-QUAD V2 / GE864-DUAL V2 side these signal are on the opposite

direction: TXD on the application side will be connected to the receive line (here

named TXD/ rx_uart ) of the GE864-QUAD V2 / GE864-DUAL V2 serial port and

viceversa for RX.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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TIP:

TIP:TIP:

TIP:

For a minimum implementation, only the TXD and RXD lines can be connected, the

other lines can be left open provided a software flow control is implemented.

9.2.

9.2.9.2.

9.2. RS232 L

RS232 LRS232 L

RS232 Level

evel evel

evel T

TT

Translation

ranslationranslation

ranslation

In order to interface the Telit GE864-QUAD V2 / GE864-DUAL V2 with a PC com port

or a RS232 (EIA/TIA-232) application a level translator is required. This level

translator must

• invert the electrical signal in both directions

• change the level from 0/+3V to +15/-15V

Actually, the RS232 UART 16450, 16550, 16650 & 16750 chipsets accept signals with

lower levels on the RS232 side (EIA/TIA-562), allowing for a lower voltage-multiplying

ratio on the level translator. Note that the negative signal voltage must be less than

0V and hence some sort of level translation is always required.

The simplest way to translate the levels and invert the signal is by using a single chip

level translator. There are a multitude of them, differing in the number of driver and

receiver and in the levels (be sure to get a true RS232 level translator not a RS485 or

other standards).

By convention the driver is the level translator from the 0/+3V UART level to the

RS232 level, while the receiver is the translator from RS232 level to 0/+3V UART.

In order to translate the whole set of control lines of the UART you will need:

• 5 driver

• 3 receiver

NOTE:

NOTE:NOTE:

NOTE:

The digital input lines working at 2.8VCMOS have an absolute maximum input voltage

of 3,1V; therefore the level translator IC shall not be powered by the +3.8V supply of

the module. Instead it shall be powered from a +2.8V / +3.0V (dedicated) power

supply.

This is because in this way the level translator IC outputs on the module side (i.e.

GE864-QUAD V2 / GE864-DUAL V2 inputs) will work at +3.8V interface levels,

stressing the module inputs at its maximum input voltage.

This can be acceptable for evaluation purposes, but not on production devices.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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NOTE:

NOTE:NOTE:

NOTE:

In order to be able to do in circuit reprogramming of the GE864-QUAD V2 / GE864-

DUAL V2 firmware, the serial port on the Telit GE864-QUAD V2 / GE864-DUAL V2

shall be available for translation into RS232 and either it is controlling device shall be

placed into tristate, disconnected or as a gateway for the serial data when module

reprogramming occurs.

Only RXD, TXD, GND, SERVICE and the On/off module turn on pad are required to the

reprogramming of the module, the other lines are unused.

All applicator shall include in their design such a way of reprogramming the GE864-

QUAD V2 / GE864-DUAL V2.

An example of level translation circuitry of this kind is:

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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The RS232 serial port lines are usually connected to a DB9 connector with the

following layout:

9.3. 5V UART Level Translation

If the OEM application uses a microcontroller with a serial port (UART) that works at

a voltage different from 2.8 – 3V, then a circuitry has to be provided to adapt the

different levels of the two set of signals. As for the RS232 translation there are a

multitude of single chip translators. For example a possible translator circuit for a 5V

TRANSMITTER/RECEIVER can be:

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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TIP:

TIP:TIP:

TIP:

Note that the TC7SZ07AE has open drain output; therefore the resistor R2 is

mandatory.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

NOTE:

NOTE:NOTE:

NOTE:

The UART input line TXD (rx_uart) of the GE864-QUAD V2 / GE864-DUAL V2 is NOT

internally pulled up with a resistor, so there may be the need to place an external

47KΩ pull-up resistor, either the DTR (dtr_uart) and RTS (rts_uart) input lines are

not pulled up internally, so an external pull-up resistor of 47KΩ may be required.

Care must be taken to avoid latch-up on the GE864-QUAD V2 / GE864-DUAL V2 and

the use of this output line to power electronic devices shall be avoided, especially for

devices that generate spikes and noise such as switching level translators, micro

controllers, failure in any of these condition can severely compromise the GE864-

QUAD V2 / GE864-DUAL V2 functionality.

NOTE:

NOTE:NOTE:

NOTE:

In case of reprogramming of the module has to be considered the use of the RESET

line to start correctly the activity.

The preferable configuration is having an external supply for the buffer level

translator.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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1vv0300875 Rev.1 – 2010-03-29

10. Audio Section Overview

The first Baseband chip was developed for the cellular phones, which needed two

separated amplifiers both in RX and in TX section.

A couple of amplifiers had to be used with internal audio transducers while the other

couple of amplifiers had to be used with external audio transducers.

To distinguish the schematic signals and the Software identifiers, two different

definitions were introduced, with the following meaning:

• internal audio transducers 

HS

HSHS

HS/MT

(from

H

HH

HandS

SS

Set

or

M

MM

MicroT

TT

Telephone

)

• external audio transducers 

HF

HFHF

HF

(from H

HH

HandsF

FF

Free )

Actually the acronyms have not the original importance.

In other words this distinction is not necessary, being the performances between the

two blocks like the same.

Only if the customer needs higher output power to drive the speaker, he needs to

adopt the Aduio2 Section (

HF

) . Otherwise the choice could be done in order to

overcome the PCB design difficulties.

For these reasons we have not changed the

HS

and

HF

acronyms, keeping them in

the Software and on the schematics.

The Base Band Chip of the GE864-QUAD V2 / GE864-DUAL V2 Telit Modules

maintains the same architecture.

For more information and suggestions refer to Telit document:

• Audio settings application note , 80000NT10007a

10.1.

10.1.10.1.

10.1. Selection mode

Selection mode Selection mode

Selection mode

Only one block can be active at a time, and the activation of the requested audio

path is done via hardware ,by

AXE

AXEAXE

AXE

line, or via software ,by

AT#CAP

AT#CAPAT#CAP

AT#CAP

command .

Moreover the

Sidetone

SidetoneSidetone

Sidetone

functionality could be implemented by the amplifier fitted

between the transmit path and the receive path, enabled at request in both modes.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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1vv0300875 Rev.1 – 2010-03-29

MICN2

100nF

Single ended

Balanced

Single ended

Bias

MICP2

100nF

Single ended

16

Balanced

xgaffull.skd

Ear MT+

Ear MT-

MICP1

MICN1

Mic MT-

Mic MT+

Ear HF+

Mic HF+

Mic HF-

LOUD1

Ear HF-

LOUD2

HS

Earpiece

HF

Speaker Fully Differential

Audio Amplifier

Fully Differential

Audio Amplifier

HS

Microphone

HF

Microphone

AUDIO 2

SECTION

AUDIO 1

SECTION

Baseband

Audio Front End

EP P1

EP N1

Single ended

Bias

Balanced

8

Balanced

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2

DUAL V2 DUAL V2

DUAL V2 Audio Front End Block Diagram

Audio Front End Block DiagramAudio Front End Block Diagram

Audio Front End Block Diagram

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

DUAL V2 Hardware User GuideDUAL V2 Hardware User Guide

DUAL V2 Hardware User Guide

1vv0300875 Rev.1 – 2010-03-29

10.2.

10.2.10.2.

10.2. Electrical Characteristics

Electrical CharacteristicsElectrical Characteristics

Electrical Characteristics

TIP:

TIP: TIP:

TIP: Being the microphone circuitry the more noise sensitive, its design and layout

must be done with particular care. Both microphone paths are balanced and the OEM

circuitry must be balanced designed to reduce the common mode noise typically

generated on the ground plane. However the customer can use the unbalanced

circuitry for its particular application.

10.2.1.

10.2.1.10.2.1.

10.2.1. Input Lines Characteristics

Input Lines CharacteristicsInput Lines Characteristics

Input Lines Characteristics

“MIC_MT” and “MIC_HF” differential microphone paths

“MIC_MT” and “MIC_HF” differential microphone paths“MIC_MT” and “MIC_HF” differential microphone paths

“MIC_MT” and “MIC_HF” differential microphone paths

Line Coupling AC*

Line Type Balanced

Differential input voltage ≤ 1,03Vpp @

Mic G=0dB

Gain steps 7

Gain increment 6dB per step

Coupling capacitor ≥ 100nF

Differential input resistance

50KΩ

Input capacitance • 10pF

(*) WARNING :

(*) WARNING : (*) WARNING :

(*) WARNING : AC means that the signals from the microphone have to be

connected to input lines of the module through capacitors which value has to

be ≥ 100nF. Not respecting this constraint, the input stages will be damaged.

WARNING:

WARNING: WARNING:

WARNING: when

particular OEM application needs a

Single Ended Input

configuration, it is forbidden connecting the unused input directly to Ground,

but only through a 100nF capacitor. Don’t forget that the useful input signal will be

halved in

Single Ended

Input

configuration.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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1vv0300875 Rev.1 – 2010-03-29

10.2.2.

10.2.2.10.2.2.

10.2.2. Output Lines Characteristics

Output Lines CharacteristicsOutput Lines Characteristics

Output Lines Characteristics

TIP

TIPTIP

TIP:

We suggest driving the load differentially from both output drivers, thus the output

swing will double and the need for the output coupling capacitor avoided. However if

particular OEM application needs also a

Single Ended circuitry

can be implemented,

but the output power will be reduced four times .

The OEM circuitry shall be designed to reduce the common mode noise typically

generated on the ground plane and to get the maximum power output from the

device (low resistance tracks).

WARNING:

WARNING: WARNING:

WARNING:

The loads are directly connected to the amplifier outputs when in

Differential

configuration, through a capacitor when in

Single Ended

configuration.

Using a

Single Ended configuration

, the unused output line must be left open .

Not respecting this constraint, the output stage will be damaged.

TIP :

TIP : TIP :

TIP :

Remember that there are slightly different electrical performances between the two

internal audio amplifiers:

• the

“Ear_MT

Ear_MTEar_MT

Ear_MT”

lines

can directly drive a

16

1616

16

Ω

load

load load

load

at –12dBFS (**)

(**)(**)

(**)

in

Differential

configuration

• the “

Ear_HF

Ear_HFEar_HF

Ear_HF”

lines can directly drive a

4

44

4

Ω

load

load load

load

in

Differential

configurations

• There is no difference if the amplifiers drive an external amplifier

(**)

(**) (**)

(**)

0dBFS

is the normalized overall Analog Gain for each Output channel equal to

3,7Vpp

differential

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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1vv0300875 Rev.1 – 2010-03-29

“EAR_MT

EAR_MTEAR_MT

EAR_MT” Output Lines

Output Lines Output Lines

Output Lines

line coupling

AC single-ended

DC differential

0dBFS normalized gain 3,7 Vpp differential

output load resistance ≥ 16 Ω

@ -12dBFS

internal output resistance 4Ω (

typical

)

signal bandwidth 150 - 4000 Hz @ -3 dB

maximal full scale

differential output voltage

3,7 Vpp

(

typical

)

R

load

=

open circuit

differential output voltage

925mVpp / R

load

=16Ω

@ -12dBFS

volume increment 2 dB per step

volume steps 10

“EAR_HF

EAR_HFEAR_HF

EAR_HF”

Output Lines

Output LinesOutput Lines

Output Lines

line coupling

AC single-ended

DC differential

output load resistance ≥ 8 Ω

signal bandwidth 150 - 4000 Hz @ -3 dB

maximal output power

@ battery voltage ≥ 3,6V

0.35 Wrms /8 Ω

volume increment 2 dB per step

volume steps 10

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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11. General Purpose I/O

The general-purpose I/O pads can be configured to act in three different ways:

• Input

• Output

• Alternate function (internally controlled)

Input pads can only be read and report the digital value (high or low) present on the

pad at the read time; output pads can only be written or queried and set the value of

the pad output; an alternate function pad is internally controlled by the GE864-QUAD

V2 / GE864-DUAL V2 firmware and acts depending on the function implemented.

The following GPIO are available on the GE864-QUAD V2 / GE864-DUAL V2:

Ball

BallBall

Ball

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Type

TypeType

Type

Input / output

Input / output Input / output

Input / output

current

currentcurrent

current

Default

DefaultDefault

Default

s

ss

state

tatetate

tate

ON_OFF

ON_OFF ON_OFF

ON_OFF

state

statestate

state

During

During During

During

Reset

ResetReset

Reset

state

statestate

state

Note

NoteNote

Note

C1

C1C1

C1

TGPIO_01 I/O GPIO01

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

E6

E6E6

E6

TGPIO_02 /

JDR I/O GPIO02

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

Alternate

function

(JDR)

C2

C2C2

C2

TGPIO_03 I/O GPIO03

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

B3

B3B3

B3

TGPIO_04 /

TXCNTRL I/O GPIO04

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

Alternate

function (RF

Transmission

Control)

K8

K8K8

K8

TGPIO_05 /

RFTXMON I/O GPIO05

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

Alternate

function

(RFTXMON)

B5

B5B5

B5

TGPIO_06 /

ALARM I/O GPIO06

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

Alternate

function

(ALARM)

L9

L9L9

L9

TGPIO_07 /

BUZZER I/O GPIO07

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

Alternate

function

(BUZZER)

K11

K11K11

K11

TGPIO_08 I/O GPIO08

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

C9

C9C9

C9

TGPIO_09 I/O GPIO09

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

H3

H3H3

H3

TGPIO_10 /

DVI_TX I/O GPIO10

Configurable GPIO CMOS 2.8V

1uA / 1mA INPUT 0 0

Alternate

function

(DVI_TX)

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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1vv0300875 Rev.1 – 2010-03-29

Not all GPIO pads support all these three modes:

• GPIO2 supports all three modes and can be input, output, Jamming Detect

Output (Alternate function)

• GPIO4 supports all three modes and can be input, output, RF

Transmission Control (Alternate function)

• GPIO5 supports all three modes and can be input, output, RFTX monitor

output (Alternate function)

• GPIO6 supports all three modes and can be input, output, alarm output

(Alternate function)

• GPIO7 supports all three modes and can be input, output, buzzer output

(Alternate function)

11.1.

11.1.11.1.

11.1. GPIO Logic

GPIO Logic GPIO Logic

GPIO Logic L

LL

Levels

evelsevels

evels

Where not specifically stated, all the interface circuits work at 2.8V CMOS logic

levels.

The following tables show the logic level specifications used in the GE864-QUAD V2 /

GE864-DUAL V2 interface circuits:

Absolute Maximum Ratings

Absolute Maximum Ratings Absolute Maximum Ratings

Absolute Maximum Ratings –Not Functional

Not FunctionalNot Functional

Not Functional

Parameter

ParameterParameter

Parameter

Min

MinMin

Min

Max

MaxMax

Max

Input level on any

digital pin when on

-0.3V +3.1V

Input voltage on

analog pins when on

-0.3V +3.0 V

Operating Range

Operating Range Operating Range

Operating Range – Interface L

Interface L Interface L

Interface Levels (2.8V CMOS)

evels (2.8V CMOS)evels (2.8V CMOS)

evels (2.8V CMOS)

Level

LevelLevel

Level

Min

MinMin

Min

Max

MaxMax

Max

Input high level 2.1V 3.1V

Input low level 0V 0.5V

Output high level 2.2V 3.0V

Output low level 0V 0.35V

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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11.2. Using a GPIO Pad as INPUT

The GPIO pads, when used as inputs, can be connected to a digital output of another

device and report its status, provided this device has interface levels compatible with

the 2.8V CMOS levels of the GPIO.

If the digital output of the device to be connected with the GPIO input pad has

interface levels different from the 2.8V CMOS, then it can be buffered with an open

collector transistor with a 47K pull up to 2.8V, this pull up must be switched off when

the module is in off condition.

11.3. Using a GPIO Pad as OUTPUT

The GPIO pads, when used as outputs, can drive 2.8V CMOS digital devices or

compatible hardware. When set as outputs, the pads have a push-pull output and

therefore the pull-up resistor may be omitted.

The illustration below shows the base circuit of a push-pull stage:

11.4. Using the RF Transmission Control GPIO4

The GPIO4 pin, when configured as RF Transmission Control Input, permits to disable

the Transmitter when the GPIO is set to Low by the application.

In the design is necessary to add a resistor 47K pull up to 2.8V, this pull up must be

switched off when the module is in off condition.

Q1

Q2

VDD

GPIO7

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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11.5. Using the RFTXMON Output GPIO5

The GPIO5 pin, when configured as RFTXMON Output, is controlled by the module and

will rise when the transmitter is active and fall after the transmitter activity is

completed.

For example, if a call is started, the line will be HIGH during all the conversation and it

will be again LOW after hanged up.

The line rises up 300ms before first TX burst and will became again LOW from 500ms to

1sec after last TX burst.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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Using the Alarm Output GPIO6

The GPIO6 pad, when configured as Alarm Output, is controlled by the module and

will rise when the alarm starts and fall after the issue of a dedicated AT command.

This output can be used to power up the module controlling micro controller or

application at the alarm time, giving you the possibility to program a timely system

wake-up to achieve some periodic actions and completely turn off either the

application and the module during sleep periods, dramatically reducing the sleep

consumption to few µA.

In battery-powered devices this feature will greatly improve the autonomy of the

device.

NOTE:

NOTE:NOTE:

NOTE:

During RESET the line is set to HIGH logic level.

11.6. Using the Buzzer Output GPIO7

As

Alternate Function

, the GPIO7 is controlled by the firmware that depends on the

function implemented internally.

This setup places always the GPIO7 pin in

OUTPUT

direction and the corresponding

function must be activated properly by AT#SRP

AT#SRPAT#SRP

AT#SRP command (refer to

AT commands

specification

).

Also in this case, the

dummy value

for the pin state can be both “

0

” or “

1

”.

• Send the command AT#GPIO=7, 1, 2<cr>:

• Wait for response OK

• Send the command AT#SRP=3

The GPIO7 pin will be set as

Alternate Function

pin with its

dummy

logic status set to

HIGH

value.

The “

Alternate Function

” permits your application to easily implement Buzzer

Buzzer Buzzer

Buzzer

feature

featurefeature

feature with some small hardware extension of your application as shown in the

sample figure below.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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1vv0300875 Rev.1 – 2010-03-29

Example of Buzzer

’

s driving circuit

NOTE:

NOTE:NOTE:

NOTE:

To correctly drive a buzzer, a driver must be provided; its characteristics depend on

the Buzzer and for them refer to your buzzer vendor.

11.7. Magnetic Buzzer Concepts

11.7.1. Short Description

A magnetic Buzzer is a sound-generating device with a coil located in the magnetic

circuit consisting of a permanent magnet, an iron core, a high permeable metal disk,

and a vibrating diaphragm.

Drawing of the Magnetic Buzzer

TR1

BCR141W

TR2

SMBT2907A

R1

4,7K

R2

1K

D1

D1N4148 C1

33pF +

-

+V buzzer

GPIO7

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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The disk and diaphragm are attracted to the core by the magnetic field. When an

oscillating signal is moved through the coil, it produces a fluctuating magnetic field,

which vibrates the diaphragm at a frequency of the drive signal. Thus the sound is

produced relative to the frequency applied.

Diaphragm movement

1.1.1 Frequency Behavior

The frequency behavior represents the effectiveness of the reproduction of the

applied signals.

Because its performance is related to a square driving waveform (whose amplitude

varies from 0V to Vpp), if you modify the waveform (e.g. from square to sinus) the

frequency response will change.

11.7.2. Power Supply Influence

Applying a signal whose amplitude is different from that suggested by manufacturer,

the performance change following the rule:

if resonance frequency

f

ff

f

o increases, amplitude decreases.

Because of resonance frequency depends from acoustic design, lowering the

amplitude of the driving signal the response bandwidth tends to become narrow, and

vice versa.

Summarizing: Vpp ↑ 

f

ff

f

o ↓ Vpp ↓ 

f

ff

f

o ↑

The risk is that the

f

ff

f

o

oo

o could easily fall outside of new bandwidth; consequently the

SPL could be much lower than the expected.

11.7.3. Warning

It is very important to respect the sense of the applied voltage: never apply to the “

-

“

a voltage more positive than the “

+

”

. If this happens, the diaphragm vibrates

in the opposite sense with a high probability to be expelled from its physical position,

damaging the device forever.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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1vv0300875 Rev.1 – 2010-03-29

11.7.4. Working Current Influence

In the component data sheet you will find the value of MAX CURRENT that represents

the maximum average current that can flow at nominal voltage without current

limitation.

In other words it is not the peak current, which could be twice or three times higher.

If driving circuitry does not support these peak values, the SPL will never reach the

declared level or the oscillations will stop.

11.8. Using the Temperature Monitor Function

11.8.1. Short Description

The Temperature Monitor is a function of the module that permits to control its

internal temperature and if properly set (see the #TEMPMON command on AT

Interface guide) it raise to High Logic level a GPIO when the maximum temperature

is reached.

11.8.2. Allowed GPIO

The AT#TEMPMON set command could be used with one of the following GPIO:

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

Type

TypeType

Type

Input /

Input / Input /

Input /

output

output output

output

current

currentcurrent

current

Note

NoteNote

Note

TGPIO_01 GPIO01 Configurable GPIO CMOS 2.8V 1µA / 1mA

TGPIO_03 GPIO03 Configurable GPIO CMOS 2.8V 1µA / 1mA

TGPIO_08 GPIO08 Configurable GPIO CMOS 2.8V 1µA / 1mA

TGPIO_09 GPIO09 Configurable GPIO CMOS 2.8V 1µA / 1mA

TGPIO_10 GPIO10 Configurable GPIO CMOS 2.8V 1µA / 1mA

The set command could be used also with one of the following GPIO but in that case

the alternate function is not usable:

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

Type

TypeType

Type

Input /

Input / Input /

Input /

output

output output

output

current

currentcurrent

current

Note

NoteNote

Note

TGPIO_02 GPIO02 Configurable GPIO CMOS 2.8V 1µA / 1mA Alternate function (JDR)

TGPIO_04 GPIO04 Configurable GPIO CMOS 2.8V 1µA / 1mA Alternate function (RF

Transmission Control)

TGPIO_05 GPIO05 Configurable GPIO CMOS 2.8V 1µA / 1mA Alternate function (RFTXMON)

TGPIO_07 GPIO07 Configurable GPIO CMOS 2.8V 1µA / 1mA Alternate function (BUZZER)

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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11.9. Indication of Network Service Availability

The STAT_LED pin status shows information on the network service availability and Call

status.

In the GE864-QUAD V2 / GE864-DUAL V2 modules, the STAT_LED usually needs an external

transistor to drive an external LED.

Therefore, the status indicated in the following table is reversed with respect to the pin

status.

LED st

LED stLED st

LED status

atusatus

atus

Device

DeviceDevice

Device Status

StatusStatus

Status

Permanently off Device off

Fast blinking

(Period 1s, Ton 0,5s)

Net search / Not registered /

turning off

Slow blinking

(Period 3s, Ton 0,3s) Registered full service

Permanently on a call is active

A schematic example could be:

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2 Hardware User Guide

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11.10. RTC Bypass Out

The VRTC pin brings out the Real Time Clock supply, which is separate from the rest

of the digital part, allowing having only RTC going on when all the other parts of the

device are off.

To this power output a backup capacitor can be added in order to increase the RTC

autonomy during power off of the battery. NO Devices must be powered from this pin.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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11.11. DAC Converter

11.11.1. Description

Ball

BallBall

Ball

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

InternalInternal

Internal

Pull up

Pull upPull up

Pull up

Type

TypeType

Type

DAC Converter

DAC ConverterDAC Converter

DAC Converter

C7

C7C7

C7

DAC_OUT AO Digital/Analog converter output D/A

The GE864-QUAD V2 / GE864-DUAL V2 module provides one Digital to Analog

Converter.

The on board DAC is a 10-bit converter, able to generate a analogue value based a

specific input in the range from 0 up to 1023. However, an external low-pass filter is

necessary.

Min

MinMin

Min

Max

MaxMax

Max

Units

UnitsUnits

Units

Voltage range (filtered) 0 2,6 Volt

Range 0 1023 Steps

The precision is 10 bits, so if we consider that the maximum voltage is 2V, the

integrated voltage could be calculated with the following formula:

Integrated output vo

Integrated output voIntegrated output vo

Integrated output voltage = 2 * value / 1023

ltage = 2 * value / 1023ltage = 2 * value / 1023

ltage = 2 * value / 1023

DAC_OUT line must be integrated (for example with a low band pass filter) in order to

obtain an analog voltage.

11.11.2. Enabling DAC

The AT command below is available to use the DAC function:

AT#DAC[=<enable>[,<value>]]

AT#DAC[=<enable>[,<value>]]AT#DAC[=<enable>[,<value>]]

AT#DAC[=<enable>[,<value>]]

<value>

<value> – scale factor of the integrated output voltage (0–1023, with 10 bit precision),

and it must be present if <enable>=1

<enable>=1<enable>=1

<enable>=1.

Refer to SW User Guide or AT Commands Reference Guide for the full description of

this function.

Refer to SW User Guide or AT Commands Reference Guide for the full description of

this function.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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NOTE:

NOTE:NOTE:

NOTE:

The DAC frequency is selected internally. D/A converter must not be used during

POWERSAVING.

11.11.3. Low Pass Filter Example

11.12. ADC Converter

11.12.1. Description

Ball

BallBall

Ball

Signal

SignalSignal

Signal

I/O

I/OI/O

I/O

Function

FunctionFunction

Function

Internal

InternalInternal

Internal

Pull up

Pull upPull up

Pull up

Type

TypeType

Type

ADC Conv

ADC ConvADC Conv

ADC Converters

erterserters

erters

J11

J11J11

J11

ADC_IN1 AI Analog/Digital converter input A/D

H11

H11H11

H11

ADC_IN2 AI Analog/Digital converter input A/D

The GE864-QUAD V2 / GE864-DUAL V2 module provides three Analog to Digital

Converter.

The on board A/D are 11-bit converter. They are able to read a voltage level in the

range of 0÷2 volts applied on the ADC pin input, store and convert it into 11 bit word.

Min

MinMin

Min

Max

MaxMax

Max

Units

UnitsUnits

Units

Input Voltage range 0 2 Volt

AD conversion - 11 bits

Resolution - < 1 mV

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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11.12.2. Using ADC Converter

The AT command below is available to use the ADC function:

AT#ADC=1,2

AT#ADC=1,2AT#ADC=1,2

AT#ADC=1,2

The read value is expressed in mV.

Refer to SW User Guide or AT Commands Reference Guide for the full description of

this function.

11.13.

11.13.11.13.

11.13. Debug of the

Debug of the Debug of the

Debug of the GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

-DUAL V2

DUAL V2DUAL V2

DUAL V2 in

in in

in

Production

ProductionProduction

Production

To test and debug the mounting of the GE864-QUAD V2 / GE864-DUAL, we strongly

recommend to foreseen test pads on the host PCB, in order to check the connection

between the GE864-QUAD V2 / GE864-DUAL V2 itself and the application and to test

the performance of the module connecting it with an external computer. Depending

by the customer application, these pads include, but are not limited to the following

signals:

Ball

BallBall

Ball

Signal

SignalSignal

Signal

Function

FunctionFunction

Function

J

JJ

J1

11

1, J

, J, J

, J2

22

2, K1, K2

, K1, K2, K1, K2

, K1, K2

VBATT Main power supply

A1, A11, D6, F1, F11,

A1, A11, D6, F1, F11, A1, A11, D6, F1, F11,

A1, A11, D6, F1, F11,

H1, H2, J3, K3, K4,

H1, H2, J3, K3, K4, H1, H2, J3, K3, K4,

H1, H2, J3, K3, K4,

K5, K6, L1,

K5, K6, L1,K5, K6, L1,

K5, K6, L1, L2, L3,

L2, L3, L2, L3,

L2, L3,

L6, L11

L6, L11L6, L11

L6, L11

GND Ground

E7

E7E7

E7

C103/TXD Serial data input (TXD) from DTE

H8

H8H8

H8

C104/RXD Serial data output (RXD) to DTE

L8

L8L8

L8

PRWMON Power ON Monitor

J5

J5J5

J5

ON/OFF* Input command for switching power ON or OFF (toggle command).

A2

A2A2

A2

RESET* Reset input

F10

F10F10

F10

RX_TRACE RX Data for debug monitor

D11

D11D11

D11

TX_TRACE TX Data for debug monitor

H4

H4H4

H4

SERVICE SERVICE connection

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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12. Assembly the GE864-QUAD V2 / GE864-DUAL V2 on the

Board

The Telit GE864-QUAD V2 / GE864-DUAL V2 have been designed in order to be

compliant with the standard lead-free SMT process.

Lead

LeadLead

Lead

-

--

-

free Alloy:

free Alloy:free Alloy:

free Alloy:

Surface finishing Sn/Ag/Cu for all solder pads

Pin A1

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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12.1.

12.1.12.1.

12.1. Recommended foot print for the application

Recommended foot print for the applicationRecommended foot print for the application

Recommended foot print for the application

N

NN

N

O

OO

O

T

TT

T

E

EE

E

:

::

:

In order to easily rework the GE864-QUAD V2 / GE864-DUAL V2 module is suggested

to consider on the application a 1.5mm inhibit area around the module.

It is also suggested, as common rule for a SMT component, to avoid having a

mechanical part of the application in direct contact with the module.

12.2.

12.2.12.2.

12.2. Stencil

StencilStencil

Stencil

Stencil’s apertures layout can be the same of the recommended footprint (1:1), we

suggest a thickness of stencil foil >120µm.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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12.3.

12.3.12.3.

12.3. PCB pad design

PCB pad designPCB pad design

PCB pad design

Non solder mask defined” (NSMD) type is recommended for the solder pads on the

PCB.

Recommendations for PCB pad dimensions

Ball pitch [mm] 2,4

Solder resist opening diameter A [mm] 1,150

Metal pad diameter B [mm] 1 ± 0.05

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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It is recommended no microvia without solder resist cover under the module and no

microvia around the pads (see following figure).

Holes in pad are allowed only for blind holes and not for through holes.

Recommendations for PCB pad surfaces:

Finish

FinishFinish

Finish

Layer thickness [µm]

Layer thickness [µm]Layer thickness [µm]

Layer thickness [µm]

Properties

PropertiesProperties

Properties

Electro-less Ni

/ Immersion Au

3 –7 /

0.05 – 0.15

good solder ability protection,

high shear force values

The PCB must be able to resist the higher temperatures which are occurring at the

lead-free process. This issue should be discussed with the PCB-supplier. Generally,

the wettability of tin-lead solder paste on the described surface plating is better

compared to lead-free solder paste.

12.4.

12.4.12.4.

12.4. Solder

SolderSolder

Solder paste

paste paste

paste

Lead free

Lead freeLead free

Lead free

Solder paste

Solder pasteSolder paste

Solder paste

Sn/Ag/Cu

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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12.4.1.

12.4.1.12.4.1.

12.4.1. GE865 Solder reflow

GE865 Solder reflowGE865 Solder reflow

GE865 Solder reflow

The following is the recommended solder reflow profile

Profile Feature

Profile FeatureProfile Feature

Profile Feature

Pb

PbPb

Pb-

--

-Free Assembly

Free AssemblyFree Assembly

Free Assembly

Average ramp-up rate (T

L

to T

P

) 3°C/second max

Preheat

– Temperature Min (Tsmin)

– Temperature Max (Tsmax)

– Time (min to max) (ts)

150°C

200°C

60-180 seconds

Tsmax to TL

– Ramp-up Rate

3°C/second max

Time maintained above:

– Temperature (TL)

– Time (tL)

217°C

60-150 seconds

Peak Temperature (Tp) 245 +0/-5°C

Time within 5°C of actual Peak

Temperature (tp)

10-30 seconds

Ramp-down Rate 6°C/second max.

Time 25°C to Peak Temperature 8 minutes max.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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NOTE:

NOTE:NOTE:

NOTE:

All temperatures refer to topside of the package, measured on the package body

surface

WARNING

WARNINGWARNING

WARNING:

::

:

The GE865 module withstands one reflow process only.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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13. Packing system

The GE864-QUAD V2 / GE864-DUAL V2 are packaged on trays of

20

2020

20

pieces each. This

is especially suitable for the GE864-QUAD V2 / GE864-DUAL V2 according to SMT

processes for pick & place movement requirements.

The size of the tray is: 329 x 176mm.

Section A

-

A

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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WARNING:

WARNING:WARNING:

WARNING:

These trays can withstand at the maximum temperature of 65° C.

NOTE:

NOTE:NOTE:

NOTE:

All temperatures refer to topside of the package, measured on the package body

surface

13.1.

13.1.13.1.

13.1. Moisture sensibility

Moisture sensibilityMoisture sensibility

Moisture sensibility

The level of moisture sensibility of GE864-QUAD V2 / GE864-DUAL V2 is “3”, in

according with standard IPC/JEDEC J-STD-020, take care all the relatives

requirements for using this kind of components.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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14. Conformity Assessment Issues

The Telit GE864-QUAD V2 has been assessed in order to satisfy the

essential requirements of the R&TTE Directive 1999/05/EC (Radio

Equipment & Telecommunications Terminal Equipments) to

demonstrate the conformity against the harmonized standards with

the final involvement of a Notified Body.

If the module is installed in conformance to the Telit installation manuals, no further

evaluation under Article 3.2

Article 3.2Article 3.2

Article 3.2 of the R&TTE Directive and do not require further involvement

of a R&TTE Directive Notified Body for the final product.

In all other cases, or if the manufacturer of the final product is in doubt, then the

equipment integrating the radio module must be assessed against Article 3.2

Article 3.2Article 3.2

Article 3.2 of the

R&TTE Directive.

In all cases the assessment of the final product must be made against the Essential

requirements of the R&TTE Directive Articles 3.1(a)

Articles 3.1(a)Articles 3.1(a)

Articles 3.1(a) and (b)

(b)(b)

(b), Safety and EMC respectively,

and any relevant Article 3.3 requirements.

This Hardware User Guide contains all the information you may need for developing a

product meeting the R&TTE Directive.

Furthermore the GE864-QUAD V2 module is FCC Approved as module to be installed in

other devices. This device is to be used only for fixed and mobile applications. If the final

product after integration is intended for portable use, a new application and FCC is

required.

The GE864-QUAD V2 is conforming to the following US Directives:

• Use of RF Spectrum. Standards: FCC 47 Part 24 (GSM 1900)

• EMC (Electromagnetic Compatibility). Standards: FCC47 Part 15

This device complies with Part 15 of the FCC Rules. Operation is subject to the following

two conditions:

(1) this device may not cause harmful interference, and

(2) this device must accept any interference received, including interference that may

cause undesired operation.

To meet the FCC's RF exposure rules and regulations:

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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• The system antenna(s) used for this transmitter must be installed to provide a separation

distance of at least 20 cm from all the persons and must not be co-located or operating in

conjunction with any other antenna or transmitter.

• The system antenna(s) used for this module must not exceed 1.4dBi (850MHz) and 3.0dBi

(1900MHz) for mobile and fixed or mobile operating configurations.

• Users and installers must be provided with antenna installation instructions and

transmitter operating conditions for satisfying RF exposure compliance.

Manufacturers of mobile, fixed or portable devices incorporating this module are advised to

clarify any regulatory questions and to have their complete product tested and approved for

FCC compliance.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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15. SAFETY RECOMMENDATIONS

NOTE:

NOTE:NOTE:

NOTE:

Read this section carefully to ensure the safe operation.

Be sure the use of this product is allowed in the country and in the environment

required. The use of this product may be dangerous and has to be avoided in the

following areas:

• Where it can interfere with other electronic devices in environments such

as hospitals, airports, aircrafts, etc

• Where there is risk of explosion such as gasoline stations, oil refineries,

etc

It is responsibility of the user to enforce the country regulation and the specific

environment regulation.

Do not disassemble the product; any mark of tampering will compromise the

warranty validity.

We recommend following the instructions of the hardware user guides for a correct

wiring of the product. The product has to be supplied with a stabilized voltage source

and the wiring has to be conforming to the security and fire prevention regulations.

The product has to be handled with care, avoiding any contact with the pins because

electrostatic discharges may damage the product itself. Same cautions have to be

taken for the SIM, checking carefully the instruction for its use. Do not insert or

remove the SIM when the product is in power saving mode.

The system integrator is responsible of the functioning of the final product;

therefore, care has to be taken to the external components of the module, as well as

of any project or installation issue, because the risk of disturbing the GSM network or

external devices or having impact on the security. Should there be any doubt, please

refer to the technical documentation and the regulations in force.

Every module has to be equipped with a proper antenna with specific characteristics.

The antenna has to be installed with care in order to avoid any interference with

other electronic devices and has to guarantee a minimum distance from the body (20

cm). In case of this requirement cannot be satisfied, the system integrator has to

assess the final product against the SAR regulation EN 50360.

GE864

GE864GE864

GE864-

--

-QUAD V2 / GE864

QUAD V2 / GE864QUAD V2 / GE864

QUAD V2 / GE864-

--

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The European Community provides some Directives for the electronic equipments

introduced on the market. All the relevant information are available on the European

Community website:

http://europa.eu.int/comm/enterprise/rtte/dir99-5.htm

The text of the Directive 99/05 regarding telecommunication equipments is available,

while the applicable Directives (Low Voltage and EMC) are available at:

http://europa.eu.int/comm/enterprise/electr_equipment/index_en.htm

Telit Communications S p A GE864Q2B Quadband GSM/ GPRS Module User Manual 1vv0300875 GE864 V2 Hardware User Guide r1

Telit Communications S.p.A. Quadband GSM/ GPRS Module 1vv0300875 GE864 V2 Hardware User Guide r1

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