Telit Communications S p A GE866 User Manual

GE866-QUAD Hardware User Guide

1VV0301051 Rev. 2 – 2014-04-07

GE866-DUAL Hardware User Guide

1VV0301051 Rev. 2 – 2014-04-077

APPLICABILITY TABLE

PRODUCT

GE866-QUAD

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SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE

Notice

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

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

Copyrights

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

Computer Software Copyrights

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

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Usage and Disclosure Restrictions License Agreements

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

Copyrighted Materials

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

High Risk Materials

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

Trademarks

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

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Contents

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1. Introduction ................................................. 8

1.1. Scope ..................................................... 8

1.2. Audience .................................................. 8

1.3. Contact Information, Support .............................. 8

1.4. Document Organization ..................................... 9

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

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

2. Overview .................................................... 11

3. GE866-QUAD Mechanical Dimensions ............................ 12

4. GE866-QUAD module connections ............................... 13

4.1. PIN-OUT .................................................. 13

4.2. Pin Layout ............................................... 16

5. Hardware Commands ........................................... 17

5.1. Auto-Turning ON the GE866-QUAD ........................... 17

5.2. Turning OFF the GE866-QUAD ............................... 19

5.3. Resetting the GE866-QUAD ................................. 21

5.3.1. Hardware Unconditional restart ............................. 21

6. Power Supply ................................................ 24

6.1. Power Supply Requirements ................................ 24

6.2. Power Consumption ........................................ 26

6.3. General Design Rules ..................................... 27

6.3.1. Electrical Design Guidelines ............................... 27

6.3.2. Thermal Design Guidelines .................................. 30

6.3.3. Power Supply PCB layout Guidelines ......................... 32

7. Antenna ..................................................... 34

7.1. GSM Antenna Requirements ................................. 34

7.1.1. GE866-QUAD Antenna – PCB line Guidelines ................... 34

7.2. PCB Design Guidelines .................................... 37

7.2.1. Transmission line design ................................... 37

7.2.2. Transmission line measurements ............................. 38

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7.3. GSM Antenna - installation Guidelines .................... 39

8. Logic levels specifications ................................. 40

8.1. Reset signal ............................................. 41

9. Serial Ports ................................................ 43

9.1. Modem Serial Port ........................................ 43

9.2. RS232 levels translation ................................. 46

10. Audio Section Overview ...................................... 48

10.1. MIC Connection ......................................... 48

10.2. EAR Connection ......................................... 48

10.3. Electrical Characteristics ............................. 50

10.3.1. Input lines .............................................. 50

10.3.2. Output lines ............................................. 51

11. General Purpose I/O ......................................... 52

11.1. GPIO Logic Levels ...................................... 53

11.2. Using a GPIO Pad as INPUT .............................. 54

11.3. Using a GPIO Pad as OUTPUT ............................. 54

11.4. Using the RF Transmission Control GPIO4 ................ 54

11.5. Using the RFTXMON Output GPIO5 ......................... 55

11.6. Using the ALARM/BUZZER output GPIO6 .................... 55

11.7. Magnetic Buzzer Concepts ............................... 57

11.7.1. Short Description ........................................ 57

11.7.2. Frequency Behaviour ...................................... 58

11.7.3. Power Supply Influence ................................... 58

11.7.4. Working Current Influence ................................ 58

11.8. STAT LED Indication of network service availability .... 59

11.9. SIMIN detect function .................................. 60

11.10. RTC Bypass out ......................................... 60

11.11. SIM Holder Implementation .............................. 60

12. DAC and ADC section ......................................... 61

12.1. DAC Converter .......................................... 61

12.1.1. Description .............................................. 61

12.1.2. Enabling DAC ............................................. 61

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12.1.3. Low Pass Filter Example .................................. 62

12.2. ADC Converter .......................................... 62

12.2.1. Description .............................................. 62

12.2.2. Using ADC Converter ...................................... 63

13. Mounting the GE866 on your Board ............................ 64

13.1. General ................................................ 64

13.2. Module finishing & dimensions .......................... 64

13.3. Recommended foot print for the application (dimensions in mm): 65

13.4. Stencil ................................................ 66

13.5. PCB pad design ......................................... 66

13.6. Recommendations for PCB pad dimensions (mm): ........... 67

13.7. Solder paste ........................................... 69

13.8. GE866 Solder reflow .................................... 70

14. Packing system .............................................. 72

14.1. Packing on reel ........................................ 72

14.2. Packing on tray ........................................ 73

14.3. Moisture sensibility ................................... 74

15. Conformity Assessment Issues ...................................... 75

15.1. GE866-QUAD ............................................. 77

16. Safety Recommendations ...................................... 81

17. Document History ............................................ 82

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1. Introduction

1.1. Scope

The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GE866-QUAD module.

1.2. Audience

This document is intended for Telit customers, who are integrators, about to implement their applications using our GE866-QUAD modules.

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-supportcenter/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 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.

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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: “GE866-QUAD Mechanical Dimensions” Chapter 4: “GE866-QUAD Module Connections” deals with the pin

out configuration and layout. Chapter 5: “Hardware Commands” How to operate on the module

via hardware. Chapter 6: “Power supply” Power supply requirements and

general design rules. Chapter 7: “Antenna” The antenna connection and board layout

design are the most important parts in the full product design.

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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 GE866QUAD 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 GE866-QUAD 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 GE866 on your Board” Recommendations and specifics on how to mount the module on the user’s board.

Chapter 14: “Packing system” Recommendations and specifics on how the system is packaged.

Chapter 15: “Safety Recommendations” Recommendations and specifics on how the system is packaged.

Chapter 16: “Document History” Holds all document changes

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1.5. Text Conventions

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

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

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

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

1.6. Related Documents

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

• Audio settings application note , 80000NT10007a

• Digital Voice Interface Application Note, 80000NT10004a

• GE866-QUAD Product description, 80416ST10122A

• SIM Holder Design Guides, 80000NT10001a

• AT Commands Reference Guide, 80000ST10025a

• Telit EVK2 User Guide, 1vv0300704

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2. Overview

The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GE866-QUAD module.

In this document all the basic functions of a mobile phone will be taken into account; for each one of them a proper hardware solution will be suggested and eventually the wrong solutions and common errors to be avoided will be evidenced. Obviously this document cannot embrace all hardware solutions and products that may be designed. Avoiding the wrong solutions shall be considered as mandatory. While the suggested hardware configurations shall not be considered mandatory, the information given shall be used as a guide and a starting point for properly developing your product with the Telit GE866-QUAD module. For further hardware details that may not be explained in this document refer to the Telit GE866QUAD Product Description document where all the hardware information is reported.

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NOTE:

The integration of the GSM/GPRS GE866-QUAD cellular module within user application shall be done according to the design rules described in this manual.

The information presented in this document is believed to be accurate and reliable. However, no responsibility is assumed by Telit Communications S.p.A. for its use, nor any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent rights of Telit Communications S.p.A. other than for circuitry embodied in Telit products. This document is subject to change without notice.

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3. GE866-QUAD Mechanical Dimensions

The GE866-QUAD overall dimensions are:

• Length: 17.2 mm

• Width: 13.2 mm

• Thickness: 2.1 mm

• Weight: 1.5 g

Figure 1

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med

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4. GE866-QUAD module connections

4.1. PIN-OUT

Pad Signal I/O

E7 D7 G7 F7 F6

C7 B7 A7 A6

All GPI0

can be

program

C2 C1

B1 A4

F4 E4

F5 G4

EAR- AO

EAR+ AO

MIC- AI Mic. signal input; phase- Audio

MIC+ AI Mic. signal input; phase+ Audio

AGND - Analog Ground Power

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

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

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

SIMIO I/O External SIM signal – Data I/O 4.7k Pull up

SIMIN I Presence SIM input CMOS 1.8V

RXD_AUX I Auxiliary UART (RX Data) CMOS 1.8V TXD_AUX O Auxiliary UART (TX Data) CMOS 1.8V

C109/DCD/GPO O

C125/RING/GPO O

C107/DSR/GPO O

C108/DTR/GPI I

C105/RTS/GPI I

C106/CTS/GPO O

C103/TXD I Serial data input (TXD) from DTE CMOS 1.8V C104/RXD O Serial data output to DTE CMOS 1.8V

ADC_IN AI Analog/Digital converter input A/D

DAC_OUT AO

VRTC AO

RESET* I Reset input CMOS 1.8V

Function Note Type

Audio

Earphone signal output, phase - Audio

Earphone signal output, phase + Audio

SIM card interface

Trace

Prog. / Data + HW Flow Control

Output for Data carrier detect signal (DCD) to DTE

/ GP output

Output for Ring indicator signal (RI) to DTE

/ GP output

Output for Data set ready signal (DSR) to DTE

/ GP output

Input for Data terminal ready signal (DTR) from DTE

/ GP input

Input for Request to send signal (RTS) from DTE

/ GP input

Output for Clear to send signal (CTS) to DTE

/ GP output

DAC and ADC

Digital/Analog converter output D/A

Miscellaneous Functions

VRTC Backup 2.3V Power

1,8 / 3V

CMOS 1.8V

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Pad Signal I/O

G6 G2

E2 E1 F6 D1 F1

G1 D2 F2 C3 E3 F3 G3

D3 D4 E5 G5 B6 E6

V_AUX / PWRMON O

Antenna I/O Antenna pad – 50 Ω RF

GPIO_01 / DVI_WA0 I/O

GPIO_02 / JDR /

DVI_RX

GPIO_03 / DVI_TX I/O

GPIO_04 / TX Disable

/ DVI_CLK

GPIO_05 / RFTXMON I/O

GPIO_06 / ALARM /

BUZZER

GPIO_07 / STAT_LED I/O

VBATT - Main power supply (Baseband) Power

VBATT_PA - Main power supply (Radio PA) Power

AGND - AF Signal Ground (see audio section) AF Signal

GND - Ground Power GND - Ground Power GND - Ground Power GND - Ground Power GND - Ground Power GND - Ground Power GND - Ground Power GND - Ground Power GND - Ground Power

I/O

Function Note Type

1.8V stabilized output Imax=100mA / Power ON monitor

GPIO

GPIO01 Configurable GPIO

/ Digital Audio Interface (WA0)

GPIO02 I/O pin

/ Jammer Detect Report

/ Digital Audio Interface (RX)

GPIO03 GPIO I/O pin

/ Digital Audio Interface (TX)

GPIO04 Configurable GPIO

/ TX Disable input

/ Digital Audio Interface (CLK)

GPIO05 Configurable GPIO

/ Transmitter ON monitor

GPIO06 Configurable GPIO

/ ALARM

GPIO07 Configurable GPIO

/ Digital Audio Interface (CLK)

Power Supply

RESERVED

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Power Out 1.8V

CMOS 1.8V

WARNING:

Reserved pins must not be connected.

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WARNING:

VAUX output must not be used to supply any device on the customer application.

It is only provided as reference/supply voltage when voltage translation to 1V8 CMOS is needed.

When its use is necessary, it is strongly recommended to connect VAUX through a series resistor as closed as possible to the module in order to reduce the inrush current of the internal DC/DC supply. Use a low value resistor (e.g. 10 ohm, 1/3W) with a maximum power rating related to drained current.

NOTE:

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

Pin signal

E2, E1 VBATT & VBATT_PA

D1, F1, G1, D2, F2, C2,

E3, F3, G3

F6 AGND A4 TXD A5 RXD A1 RTS G6 V_AUX / PWRMON G4 RESET* C1 TXD_AUX C2 RXD_AUX

GND

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GPIO

4.2. Pin Layout

A B C D E F G

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TOP VIEW

C105/RTS C106/CTS TXD_AUX GND VABTT_PA

C108/DTR C109/DCD RXD_AUX GND VABTT GND ANT

C107/DSR C125/RING GND RESERVED

C103/TXD

C104/RXD

SIMIO RESERVED

GPIO_06/

ALRM/

BUZZER

GPIO_05/

RFTXMON

GPIO_07/ STAT_LED

GPIO_01/

DVI_WAO

GPIO_02/

JDR/

DVI_RX

RESERVED DAC_OUT ADC_IN RESET*

GPIO_04/

TX_DIS/ DVI_CLK

GPIO_03/

DVI_TX

GND GND GND

RESERVED VRTC RESERVED

RESERVED AGND

GND GND

V_AUX/ PWRMON

SIMCLK SIMRST SIMVCC EAR+ EAR- MIC+ MIC-

AUDIO ANTENNA

SIM RESERVED/FU

MISCELLANOUS POWER

SERIAL GND

NOTE:

The pins defined RESERVED must not be connected to any pin in the application.

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5. Hardware Commands

5.1. Auto-Turning ON the GE866-QUAD

To Auto-turn on the GE866-QUAD, the power supply must be applied on the power pins VBATT and VBATT_PA, after 1000 mseconds, the V_AUX / PWRMON pin will be at the high logic level and the module can be considered fully operating.

When the power supply voltage is between 3.22V and 3.4V, after 5000 m-seconds, the V_AUX / PWRMON pin will be at the high logic level and the module can be considered fully operating.

The following flow chart shows the proper turn on procedure:

Modem ON Proc.

PWR supply = ON?

Delay 300mS

Enter AT<CR>

PWMON = ON?

AT answer in

AT init sequence.

1second ?

Delay 1s - 5s for Low

Voltage Operating

PWMON = ON?

Modem Reset Proc.

Delay 1s

Start AT CMD.

NOTE:

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The power supply must be applied either at the same time on pins VBATT and VBATT_PA, or first applied on VBATT_PA and then on VBATT. The opposite sequence shall be avoided. The reverse procedure applies for powering down the module: first disconnect VBATT, then VBATT_PA, or both at once.

NOTE:

In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the GE866-QUAD when the module is powered OFF or during an ON/OFF transition.

A flow chart showing the AT commands managing procedure is

displayed below:

Start AT CMD.

Delay 300mS

Enter AT<CR>

AT answer in

AT init sequence.

1second?

Disconnect PWR

supply

Modem ON Proc.

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5.2. Turning OFF the GE866-QUAD

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

• General turn OFF

• Processor turn OFF

General turn OFF – disconnect the power supply from the both power pins VBATT and VBATT_PA at the same time. In this case all parts of the module are in OFF condition, no power consumption is present.

Processor turn OFF – disconnect the power supply only from the power pin VBATT, the power pin VBATT_PA can be connected to power supply, in this case a low, about 30uA, power consumption is present

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Before either of both OFF procedures is applied, the AT#SYSHALT AT command must be sent (see AT Commands Reference Guide, 80000ST10025a), after the OK response message, wait for 10 seconds, then the module can be consider fully not operating and at this moment is possible disconnect the Power Supply.

The following flow chart shows the proper turnoff procedure:

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Modem OFF

Proc.

AT#SYSHALT

10s timeout

Disconnect PWR

supply

Delay 1.5s

WARNING:

PWRMON can be used to monitor only the power on but it cannot be used to monitor the power off because it remains high

NOTE:

In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the GE866-QUAD when the module is powered off or during an ON/OFF transition.

Modem ON Proc.

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5.3. Resetting the GE866-QUAD

5.3.1. 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 stuck waiting for some network or SIM responses.

To unconditionally reboot the GE866-QUAD, the pad RESET* must be tied low for at least 200 milliseconds and then released.

The maximum current that can be drained from the ON* pad is

0.15 mA.

NOTE:

Do not use any pull up resistor on the RESET* line nor any totem pole digital output. Using pull up resistor may bring to latch up problems on the GE866-QUAD power regulator and improper functioning of the module. The line RESET* must be connected only in open collector configuration; the transistor must be connected as close as possible to the RESET* pin.

TIP:

The unconditional hardware restart must always be implemented on the boards and the software must use it as an emergency exit procedure.

A simple circuit to do it is:

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Reset = LOW

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

Modem Reset

Proc.

Delay 200ms

Reset = HIGH

Delay 1s

Start AT CMD.

NOTE:

In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the

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digital pins of the GE866-QUAD when the module is powered OFF or during an ON/OFF transition.

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Extended Operating Voltage Range

3.10 V÷ 4.50 V

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 performance, hence read the requirements carefully and the guidelines that will follow for a proper design.

6.1. Power Supply Requirements

The external power supply must be connected to VBATT & VBATT_PA signals and must fulfill the following requirements:

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POWER SUPPLY

Nominal Supply Voltage Normal Operating Voltage Range

3.8 V

3.40 V÷ 4.20 V

NOTE:

The Operating Voltage Range MUST never be exceeded; care must be taken when designing the application’s power supply section to avoid having an excessive voltage drop.

If the voltage drop is exceeding the limits it could cause a Power Off of the module.

The Power supply must be higher than 3.22 V to power on the module.

NOTE:

Overshoot voltage (regarding MAX Extended Operating Voltage) and drop in voltage (regarding MIN Extended Operating Voltage) MUST never be exceeded;

The “Extended Operating Voltage Range” can be used only with complete assumption and application of the HW User guide suggestions.

NOTE:

When the power supply voltage is between 3.22V and 3.4V, after 5000 m-seconds, the V_AUX / PWRMON pin will be at the high

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logic level and the module can be consider fully operating. See Par. 5.1.

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Telit Communications S p A GE866 User Manual

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