SONY Ericsson GR47, GR48 User Manual

GR47/GR48

Integrator’s Manual

The GR47 described in this manual conforms to the Radio and Telecommunications Terminal Equipment (R&TTE) directive 99/5/EC with requirements covering EMC directive 89/336/EEC and Low Voltage directive 73/23/EEC. The product fulfils the requirements according to 3GPP TS 51.010-1, EN 301 489-7 and EN60950.

FCC ID: PY76220511-BV

IC: 4170B-6220511

The GR48 described in this manual conforms to the Federal Communications Commission, FCC Rules Parts 22.901d and 24 E and PTCRB NAPRD.03_TC version: V.2.7.2, 3GPP TS 51.010 Version: 3GPP TS 51.010-1 V.5.6.0

SAR statement: This product is intended to be used with the antenna or other radiating element at least 20 cm away from any part of the human body.

The information contained in this document is the proprietary information of Sony Ericsson Mobile Communications International. 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 Sony Ericsson Mobile Communications International, is strictly prohibited. Further, no portion of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, without the prior written consent of Sony Ericsson Mobile Communications International, the copyright holder.

First edition (December 2004)

Sony Ericsson Mobile Communications International publishes this manual without making any warranty as to the content contained herein. Further Sony Ericsson Mobile Communications International reserves the right to make modifications, additions and deletions to this manual 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 manual.

Printed in UK

Contents

Contents.....................................................................................................3

1 Introduction ........................................................................................6

1.1 Target Users..............................................................................................6

1.2 Prerequisites .............................................................................................6

1.3 Manual Structure .......................................................................................6

2 GR47/GR48 Radio Devices..................................................................7

2.1 About the GR47/GR48 Family...................................................................7

2.2 Radio Devices in a Communication System..............................................7

2.3 Features ....................................................................................................9

2.3.1 Types of Mobile Station .................................................................9

2.3.2 Short Message Service................................................................10

2.3.3 Voice Calls...................................................................................10

2.3.4 Data .............................................................................................11

2.3.5 SIM Card......................................................................................11

2.3.6 Power Consumption.....................................................................11

2.3.7 Other Features.............................................................................12

2.4 Service and Support ................................................................................12

2.4.1 Web Pages ..................................................................................12

2.4.2 Extranet .......................................................................................12

2.4.3 Integrator’s Manual ......................................................................12

2.4.4 AT Commands Manual ................................................................12

2.4.5 M2mpower Application Guide ......................................................12

2.4.6 Developer’s Kit.............................................................................13

2.5 Precautions .............................................................................................13

2.6 Customer support contact details ............................................................13

3 Abbreviations ...................................................................................15

4 Mechanical Description .................................................................... 17

4.1 Interface Description................................................................................17

4.2 Physical Dimensions ...............................................................................18

5 System Connector Interface ............................................................. 20

5.1 Overview .................................................................................................20

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5.2 General Electrical and Logical Characteristics ........................................23

5.2.1 General Protection Requirements................................................24

5.3 Grounds...................................................................................................24

5.3.1 Analogue Ground - AGND ...........................................................24

5.3.2 Digital Ground - DGND ................................................................25

5.4 VCC - Regulated Power Supply Input .....................................................25

5.5 Battery Charging Input (CHG_IN)(Reserved for future use) ....................26

5.6 Turning the Radio Device ON/OFF and the External Power Signal.........27

5.6.1 VIO - 2.75V Supply ......................................................................29

5.7 Analogue Audio .......................................................................................30

5.7.1 Audio To Mobile Station - ATMS..................................................30

5.7.2 Audio From Mobile Station - AFMS .............................................31

5.7.3 Microphone Signals .....................................................................32

5.7.4 Speaker Signals...........................................................................33

5.8 PCM Digital Audio ...................................................................................34

5.8.1 PCM Data Format........................................................................35

5.9 Serial Data Interfaces ..............................................................................37

5.9.1 UART1 (RS232) - RD, TD, RTS, CTS, DTR, DSR, DCD and RI .38

5.9.2 Serial Data Signals - RD, TD .......................................................38

5.9.3 Control Signals - RTS, CTS, DTR, DSR, DCD, RI.......................39

5.9.4 UART2 - TD2, RD2......................................................................40

5.9.5 UART3 - TD3, RD3......................................................................41

5.10 SIM Card Related Signals .......................................................................41

5.10.1 SIM Detection - SIMPRESENCE .................................................42

5.11 Service/Programming ..............................................................................43

5.12 Buzzer .....................................................................................................43

5.13 LED 43

5.14 General Purpose Digital I/O Ports ...........................................................44

5.15 Extended I/O capabilities.........................................................................45

5.15.1 LED/IO6 Capabilities....................................................................45

5.15.2 I#/O#............................................................................................45

5.15.3 UART3/IO# ..................................................................................46

5.15.4 IO#/ADC# ....................................................................................46

5.16 General Purpose Analogue I/O Ports ......................................................46

5.16.1 Digital to Analogue Converter - DAC ...........................................46

5.16.2 Analogue to Digital Converters 1, 2 and 3 - ADCx.......................47

5.16.3 Analogue to Digital Converters 4 and 5 - IOx/ADCx ....................48

5.17 External I 2C Serial Control Bus...............................................................49

5.18 TX_ON - Burst Transmission...................................................................50

5.19 Real Time Clock ......................................................................................50

6 Antenna Connector........................................................................... 52

7 Hints for Integrating the Radio Device ............................................. 53

7.1 Safety Advice and Precautions................................................................53

7.1.1 General ........................................................................................53

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7.1.2 SIM Card......................................................................................54

7.1.3 Antenna .......................................................................................54

7.2 Installation of the Radio Device ...............................................................55

7.2.1 Where to Install the Radio Device................................................55

7.2.2 How to Install the Radio Device ...................................................56

7.3 Antenna ...................................................................................................57

7.3.1 General ........................................................................................57

7.3.2 Antenna Type ..............................................................................57

7.3.3 Antenna Placement .....................................................................58

7.3.4 The Antenna Cable......................................................................58

7.3.5 Possible Communication Disturbances........................................58

8 TCP/IP Stack ..................................................................................... 60

8.1 Implementation........................................................................................60

9 Technical Data .................................................................................. 61

10 Declaration of Conformity ................................................................ 63

11 Introduction to the Universal Developer’s Kit .................................. 64

11.1 Contents of the Kit...................................................................................64

11.2 Assembling the Developer's Board..........................................................65

11.3 Mounting a GX-47/48 ..............................................................................66

11.4 Assembly instructions:.............................................................................66

11.5 System Requirements .............................................................................67

11.6 GX-47/48 Family; Connection .................................................................67

12 Using the Universal Developer's Kit................................................. 69

12.1 Gx-47/48 Setup .......................................................................................69

12.2 Operation Mode.......................................................................................72

12.3 Serial interface.........................................................................................73

12.4 Engine Application Port - 40-Pin Connector (X600).................................75

12.5 RF Interface.............................................................................................77

12.6 Audio Interface ........................................................................................77

12.7 Keypad Connector (X410) .......................................................................78

12.8 Flashing Firmware ...................................................................................78

12.9 Operation.................................................................................................79

12.10 Flow Control ............................................................................................79

12.11 Power Down ............................................................................................79

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1 Introduction

1.1 Target Users

The GR47 and GR48 radio devices are designed to be integrated into machine-to-machine or man-to-machine communications applications. They are intended to be used by manufacturers, system integrators, applications developers and developers of wireless communications equipment.

1.2 Prerequisites

It is assumed that the person integrating the radio device into an application has a basic understanding of the following:

• GSM networking;

• Wireless communication and antennas (aerials);

• AT commands;

• ITU-T standard V.24/V.28;

• Micro controllers and programming;

• Electronic hardware design.

1.3 Manual Structure

The manual is composed of three parts:

Part 1- Overview

This section provides a broad overview of the GR47/GR48 family and includes a list of abbreviations used in the manual.

Part 2 - Integrating the Radio Device

This section describes each of the signals available on the GR47/GR48 radio devices, along with mechanical information. The section also provides you with design guidelines and explains what is needed to commercialise an application from a regulatory point of view.

Part 3 - Developer’s Kit

This section lists the contents of the Developer’s Kit and provides the information to setup and use the equipment.

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GR47/GR48 RADIO DEVICES

2 GR47/GR48 Radio Devices

2.1 About the GR47/GR48 Family

Two radio devices make up the family; GR47 and GR48, for use in the E-GSM900/GSM1800 and GSM850/GSM1900 bands respectively.

Note! This manual refers to the GR47 and GR48 as radio devices. If

there is a difference in the functionality of the radio devices the GR47 and GR48 information will be listed separately.

The products belong to a new generation of Sony Ericsson radio devices, and are intended to be used in machine-tomachine applications and man-to-machine applications. They are used when there is a need to send and receive data (by SMS, CSD, HSCSD, or GPRS), and make voice calls over the GSM network.

The radio devices can either have applications embedded onto them or they can be used as the engine in an application created by the customer. The radio device can send and receive data when a script is executed, the script can be run internally from the radio device itself or from a micro-controller. A typical application, involves a micro-controller and a radio device, in which the micro-controller sends AT commands to the radio device via an RS232 communications link.

2.2 Radio Devices in a Communication System

Figures 2.1 and 2.2 illustrate the main blocks of a wireless communication system using the radio device. Figure 2.1 shows the communication system when the script is embedded on the radio device and figure 2.2 shows the communication system when a micro-controller is used. They also show the communication principles of the system and the interface between the radio device and the application. The definitions in the figures, as used elsewhere in this manual, are in accordance with the recommendations of GSM 07.07.

• The MS (mobile station) represents the radio device and SIM card. The radio device excluding SIM card, is known as the ME (mobile equipment).

• The DTE (data terminal equipment) is the controlling application. This can be either an external host or an internal embedded application.

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GR47/GR48 RADIO DEVICES

• The DCE (data circuit terminating equipment) is the serial communication interface of the MS.

Figure 2.1 Main Blocks in a Wireless System (embedded application)

Figure 2.2 Main Blocks in a Wireless System (external micro-

controller)

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In accordance with the recommendations of ITU-T (International Telecommunication Union - Telecommunications Standardisation Sector) V.24, the TE communicates with the MS over a serial interface.

The functions of the radio device follow the recommendations provided by ETSI (European Telecommunications Standards Institute) and ITU-T.

ETSI specifies a set of AT commands for controlling the GSM element of the radio device; these commands are supplemented by Sony Ericsson specific commands.

To find out how to work with AT commands, see the AT Commands Manual.

2.3 Features

GR47/GR48 RADIO DEVICES

The radio device performs a set of telecom services (TS) according to GSM standard phase 2+, ETSI and ITU-T. The functions of the radio device are implemented by issuing AT commands over a serial interface.

2.3.1 Types of Mobile Station

GR47 and GR48 are dual band mobile stations with the characteristics shown in the tables below.

GR47 E-GSM 900 GSM 1800

Frequency Range (MHz) TX: 880-915

RX: 925-960

Channel spacing 200 kHz 200 kHz

Number of channels 174 carriers *8 time slots 374 carriers *8 time slots

Modulation GMSK GMSK

TX phase accuracy < 5º RMS phase error (burst) < 5º RMS phase error (burst)

Duplex spacing 45 MHz 95 MHz

TX: 1710-1785 RX: 1805-1880

Receiver sensitivity at antenna connector

Transmitter output power at antenna connector

Automatic hand-over between E-GSM 900 and GSM 1800

< –102 dBm < –102 dBm

Class 4 2 W (33 dBm)

Class 1 1 W (30 dBm)

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GR47/GR48 RADIO DEVICES

GR48 GSM 850 GSM 1900

Frequency Range (MHz) TX: 824-849

RX: 869-894

Channel spacing 200 kHz 200 kHz

Number of channels 124 carriers *8 time slots 299 carriers *8 time slots

Modulation GMSK GMSK

TX Phase Accuracy < 5º RMS phase error (burst) < 5º RMS phase error (burst)

Duplex spacing 45 MHz 80 MHz

Receiver sensitivity at antenna connector

Transmitter output power at antenna connector

Automatic hand-over between GSM 850 and GSM 1900

< –102 dBm < –102 dBm

Class 4 2W (33 dBm)

TX: 1850-1910 RX: 1930-1990

Class 1 1 W (30 dBm)

2.3.2 Short Message Service

The radio device supports the following SMS services:

• Sending; MO (mobile-originated) with both PDU (protocol data unit) and text mode supported.

• Receiving; MT (mobile-terminated) with both PDU and text mode supported.

• CBM (cell broadcast message); a service in which a message is sent to all subscribers located in one or more specific cells in the GSM network (for example, traffic reports).

• SMS STATUS REPORT according to GSM 03.40.

The maximum length of an SMS message is 160 characters when using 7-bit encoding. For 8-bit data, the maximum length is 140 characters. The radio device supports up to six concatenated messages to extend this function. Concatenation is disabled if CNMI 3,2 is set (See the AT Commands Manual for further details).

2.3.3 Voice Calls

The radio device offers the capability of MO (mobile originated) and MT (mobile terminated) voice calls, as well as supporting emergency calls. Multiparty, call waiting and call divert features

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2.3.4 Data

GR47/GR48 RADIO DEVICES

are available. Some of these features are network-operator specific.

For the inter-connection of audio, the radio device offers both single ended and balanced analogue input and output lines. Direct interface to the digital PCM (pulse code modulation) bus used within the radio device is available, thus by-passing the internal analogue circuitry.

The radio devices support HR, FR and EFR vocoders. The GR48 also supports the Adaptive Multi Rate (AMR) type of vocoder.

The radio device supports the following data protocols:

• GPRS (General Packet Radio Service) The radio devices are Class B terminals. The radio devices are GPRS 4+1 enabled, which are capable of receiving at a maximum of four timeslots per frame (down link), and transmitting in one timeslot per frame (up link).

• CSD (Circuit Switched Data) The radio devices are capable of establishing a CSD communication at 9.6 kbps.

• HSCSD (High Speed Circuit Switched Data). The radio devices support HSCSD communication, with one timeslot per frame capacity in the up link and two timeslots per frame capacity in the down link (2+1).

2.3.5 SIM Card

An external SIM card with 3 V or 5 V technology, can be connected to the radio device via its 60-pin system connector. The unit does not need any external components to enable this.

2.3.6 Power Consumption

Idle Mode Transmit/Operation

Voice/CSD < 5 mA < 250 mA (< 2 A peak) GSM 850 and E-GSM 900

Data (GPRS 4+1) < 5 mA < 350 mA (< 2 A peak)

Voice/CSD < 5 mA < 250 mA (<1.75 A peak) GSM 1800 and GSM 1900

Data (GPRS 4+1) < 5 mA < 350 mA (<1.75 A peak)

Note! The power consumption during transmission is measured at

maximum transmitted power.

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GR47/GR48 RADIO DEVICES

2.3.7 Other Features

These include:

• 07.10 multiplexing.

• GPS interoperability.

• SIM application tool kit, class 2 release 96 compliant.

• Embedded application

• On board TCP/IP stack

• AMR (Supported by GR48)

2.4 Service and Support

2.4.1 Web Pages

Visit our web site for the following information:

• where to buy radio devices or for recommendations concerning accessories and components;

• the telephone number for customer support in your region;

• FAQs (frequently asked questions).

The web site address is:

http://www.SonyEricsson.com/M2M

2.4.2 Extranet

The extranet contains all of the more in depth documentation, such as AT commands manual, software bulletins, etc. To gain access to the site please contact either your sales person or customer support.

2.4.3 Integrator’s Manual

This manual provides you with all of the information you need to integrate the radio device into your application.

2.4.4 AT Commands Manual

The AT Commands Manual provides you with all the AT commands you can use with your radio device. AT commands are in logical groups and contain the command, a description of its functionality and an example of use.

2.4.5 M2mpower Application Guide

The M2mpower Application Guide provides you with all the information you need to build an application using the

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M2mpower support environment. This manual is supplied as part of the M2mpower package. There are also a number of application notes which accompany the guide showing how to use specific functionality.

2.4.6 Developer’s Kit

Sony Ericsson provides the developer’s kit to get you started quickly. The kit includes the necessary hardware required to begin the development of an application. It includes the following:

• GSM radio device, GR47 or GR48;

• This Integrator’s Manual;

• Developer’s kit hardware;

• Developer’s kit accessories;

GR47/GR48 RADIO DEVICES

• Power supply

• RS232 cable

• Headset

• Antenna.

All the user needs to provide, is a computer or micro-controller and the expertise to use AT commands.

2.5 Precautions

The radio devices are ESD protected up to 4KV contact and 8KV air discharge. It is recommended that you follow electronic device handling precautions when working with any electronic device system to ensure no damage occurs to the host or the radio device. In “Integrating the Radio Device”, page 16 you will find more information about safety and product care. Do not exceed the environmental and electrical limits as specified in Technical Data, page 61.

2.6 Customer support contact details

To contact customer support please use the details below.

Customer Support Sony Ericsson Mobile Communications (UK) Ltd M2MCom 1 Lakeside Road Systems Union House Aerospace Park Farnborough

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GR47/GR48 RADIO DEVICES

Hampshire UK GU14 6XP

E mail : M2Msupport.EMEA-APAC@sonyericsson.com

M2Msupport.Americas@sonyericsson.com M2Minfo@sonyericsson.com

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3 Abbreviations

Abbreviation Explanations

AMR Adaptive Multi Rate

ATMS Audio to Mobile Station

AFMS Audio from Mobile Station

CBM Cell Broadcast Message

CBS Cell Broadcast Service

CSD Circuit Switched Data

ABBREVIATIONS

DCE Data Circuit Terminating Equipment

DK Developer’s Kit

DTE Data Terminal Equipment

DTMF Dual Tone Multi Frequency

EA Embedded Application

EFR Enhanced Full Rate

EMC Electro-Magnetic Compatibility

ETSI European Telecommunication Standards Institute

FR Full Rate

GPRS General Packet Radio Service

GPS Global Positioning System

GSM Global System for Mobile Communication

HR Half Rate

HSCSD High Speed Circuit Switched Data

IDE Integrated Development Environment

IP Internet Protocol

ITU-T International Telecommunication Union - Telecommunications

Standardisation Sector

M2mpower Sony Ericsson’s powerful support environment

ME Mobile Equipment

MMCX Micro Miniature Coax

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ABBREVIATIONS

MO Mobile Originated

MS Mobile Station

MT Mobile Terminated

PCM Pulse Code Modulation

PDU Protocol Data Unit

RF Radio Frequency

RFU Reserved for Future Use

RLP Radio Link Protocol

RTC Real Time Clock

SDP Service Discovery Protocol

SIM Subscriber Identity Module

SMS Short Message Service

TCP Transport Control Protocol

UDP User Datagram Protocol

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4 Mechanical Description

4.1 Interface Description

The pictures below show the mechanical design of the radio device along with the positions of the different connectors and mounting holes. The radio device is protected with AISI 304 stainless steel covers that meet the environmental and EMC requirements.

  

 

 

Figure 4.1 Radio Device viewed from below

Figure 4.2 Radio Device, viewed from above

Please note the following:

• Mounting holes positioned at the corners make it possible to securely bolt the radio device into your application.

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MECHANICAL DESCRIPTION

• Keypad, display, microphone, speaker and battery are not part of the radio device.

• The SIM card is mounted in your application, external to the radio device.

• The System Connector is a 60-pin, standard 0.05 in (1.27 mm) pitch type. The pins and their electrical characteristics are described in 5 System Connector Interface, page 20.

• Information about the Antenna Connector is found in 6 Antenna Connector page 52.

4.2 Physical Dimensions

33.00

50.00

4.78

2.20 (4x)

2.86

2.053.80

30.20

3.00

7.15 2.90

4.60

2.80

1.80

2.30

9.00

46.40

Figure 4.2 Dimensions of the Radio Device

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MECHANICAL DESCRIPTION

Measurements are given in millimetres. See also Technical Data page 61.

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SYSTEM CONNECTOR INTERFACE

5 System Connector Interface

5.1 Overview

Electrical connections to the radio device (except the antenna), are made through the System Connector Interface. The system connector is a 60pin, standard 0.05 in (1.27 mm) pitch device.

The system connector allows both board-to-board and board-tocable connections to be made. Use a board-board connector to connect the radio device directly to a PCB, and a board-cable connector to connect the radio device via a cable.

Figure 5.1 below shows the numbering of the connector pins.

A ground connection is provided at the mounting hole next to the RF connector on the radio device as shown below. Connect this ground point to the DGND pins of the radio device by the shortest, low-impedance path possible. The purpose of this connection is to allow any antenna ESD strikes to bypass the radio device’s internal ground path.

Ground connection

Pin 59 Pin 1

Pin 60 Pin 2

Figure 5.1 Radio Device, viewed from underneath

The following table gives the pin assignments for the system connector interface and a short description for each signal.

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SYSTEM CONNECTOR INTERFACE

Note! Under the heading “Dir” in the table, radio device input and

output signals are indicated by the letters I and O respectively.

Pin Signal Name Dir Signal Type Description

1 VCC - Supply Power supply

2 DGND - - Digital ground

3 VCC - Supply Power supply

4 DGND - - Digital ground

5 VCC - Supply Power supply

6 DGND - - Digital ground

7 VCC - Supply Power supply

8 DGND - - Digital ground

9 VCC - Supply Power supply

10 DGND - - Digital ground

11 CHG_IN (RFU) - Battery charge

power

12 DGND - - Digital ground

13 IO5

ADC4

14 ON/OFF I Internal pull

15 SIMVCC - Digital 3 V/5 V SIM card power supply. Power output from

16 SIMPRESENCE I Internal pull

17 SIMRST O Digital 3 V/5 V SIM card reset

18 SIMDATA I/O Digital 3 V/5 V SIM card data

19 SIMCLK O Digital 3 V/5 V SIM card clock

I/0 I Digital 2.75V

Analogue

up, open drain

Battery charging

General purpose input/output 5 Analogue to digital converter 4

Turns the radio device on and off.

radio device for SIM Card

SIM Presence A “1” indicates that the SIM is missing; a “0” that it is inserted

20 DAC O Analogue Digital to analogue converter

21 IO1 I/O Digital 2.75V General purpose input/output 1

22 IO2

ADC5

23 IO3 I/O Digital 2.75V General purpose input/output 3

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I/O I Digital 2.75V

Analogue

General purpose input/output 2 Analogue to digital converter 5

SYSTEM CONNECTOR INTERFACE

24 IO4

I/O Digital 2.75V General purpose input/output 4

25 VRTC I Supply 1.8V Supply for real time clock

26 ADC1 I Analogue Analogue to digital converter 1

27 ADC2 I Analogue Analogue to digital converter 2

28 ADC3 I Analogue Analogue to digital converter 3

29 SDA I/O 2.75V, internal

I 2 C data

pull up

30 SCL O 2.75V, internal

I 2 C clock

pull up

31 BUZZER O Digital 2.75V Buzzer output from radio device

32 OUT3

DSR

33 LED

IO6

34 VIO O Power Out

O O Digital 2.75V General purpose output 3

Data set ready (UART1)

Digital 2.75V Flashing LED

I/O

General purpose I/O 6

Radio device power indication. VIO is a

2.75 V

2.75 V at 75 mA output supply that can be used to power external circuitry that interfaces to the radio device

35 TX_ON O Digital 2.75V This output indicates when the GSM radio

device is going to transmit the burst

36 RI

37 DTR

IN1

38 DCD

39 RTS

IO9

40 CTS

O O Digital 2.75V Ring Indicator (UART1)

General purpose output 2

Digital 2.75V Data Terminal Ready (UART1)

General purpose input 1

O O Digital 2.75V Data Carrier Detect (UART1)

General purpose output 1

Digital 2.75V Request To Send (UART1)

I/O

General purpose I/O 9

O O Digital 2.75V Clear To Send (UART1)

General purpose output 4

41 TD I Digital 2.75V Transmitted Data (UART1).

Data from DTE (host) to DCE (radio device).

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SYSTEM CONNECTOR INTERFACE

42 RD O Digital 2.75V Received Data (UART1).

Data from DCE (radio device) to DTE (host).

43 TD3

I/O7

44 RD3

I/O8

45 TD2 I Digital 2.75V Transmitted data (UART2).

46 RD2 O Digital 2.75V Received data (UART2).

47 PCMULD I Digital 2.75V DSP PCM digital audio input

48 PCMDLD O Digital 2.75V DSP PCM digital audio output

49 PCMO O Digital 2.75V Codec PCM digital audio output

50 PCMI I Digital 2.75V Codec PCM digital audio input

51 PCMSYNC O Digital 2.75V DSP PCM frame sync

52 PCMCLK O Digital 2.75V DSP PCM clock output

53 MICP I Analogue Microphone Input positive

54 MICN I Analogue Microphone Input negative

Digital 2.75V Transmitted data (UART3)

I/O

Digital 2.75V Received data (UART3)

I/O

General purpose I/O 7

General purpose I/O 8

Used for flashing the memory.

55 BEARP O Analogue Speaker output positive

56 BEARN O Analogue Speaker output negative

57 AFMS O Analogue Audio output from radio device

58 SERVICE I 2.7V Flash programming voltage for the MS.

Enable logger information if not flashing.

59 ATMS I Analogue Audio input to radio device

60 AGND - Analogue Analogue ground

5.2 General Electrical and Logical Characteristics

Many of the signals, as indicated in the table above, are highspeed CMOS logic inputs or outputs powered from a 2.75V±5% internal voltage regulator, and are defined as Digital 2.75V. Whenever a signal is defined as Digital 2.75V, the following electrical characteristics apply.

Parameter Min. Max. Units

High Level Output Voltage (VOH), Io = –2mA 2.2 2.75 V

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SYSTEM CONNECTOR INTERFACE

Low Level Output Voltage (VOL), Io = 2mA 0 0.6 V

High Level Input Voltage (VIH) 1.93 2.75 V

Low Level Input voltage (VIL) 0 0.5 V

Note! Unused pins can be left floating.

5.2.1 General Protection Requirements

• All 2.75 V digital inputs will continuously withstand and suffer no damage in the power-on or power-off condition when subjected to any voltage from - 0.5 V to 3.47 V (3.3 V + 5 %).

• All 2.75 V digital outputs will continuously withstand a short circuit to any other voltage within the range 0 V to 3 V.

• All analogue outputs will continuously withstand a short circuit to any voltage within the range 0 V to 3 V.

• The SIM output signals and the SIMVCC supply will continuously withstand a short circuit to any voltage within the range 0 V to 4.1V.

Note! Although the unit should be able to withstand the higher

voltages the unit should not be driven at the levels as it will result in failures over time.

5.3 Grounds

Pin Signal Description

2, 4, 6, 8, 10, 12 DGND Digital ground

60 AGND Analogue ground

There are two ground connections in the radio device, AGND (analogue ground) and DGND (digital ground). Pin assignments are shown in the table above.

Note! AGND and DGND are connected at a single point inside the

radio device. They must not be joined together in your application.

5.3.1 Analogue Ground - AGND

AGND is the return signal, or analogue audio reference, for ATMS (Audio To Mobile Station) and AFMS (Audio From Mobile Station). It is connected to the DGND inside the radio device only. The application must not connect DGND and AGND.

LZT 123 8020 R1A

SYSTEM CONNECTOR INTERFACE

Parameter Limit

max

5.3.2 Digital Ground - DGND

DGND is the reference or return signal for all system interface digital signals and is also the d.c. return for SERVICE and the power supply, VCC. Connect all DGND pins together in your application in order to carry the current drawn by the radio device.

Parameter Per Pin Total (5 Pins)

< 6.0mA < 3.0A

max

< 100mA < 600mA

avg

≅12.5 mA

5.4 VCC - Regulated Power Supply Input

Pins Signal Description

1, 3, 5, 7, 9 VCC regulated power supply input

Power is supplied to the radio device VCC pins, from an external source.

Connect all VCC pins together in your application in order to carry the current drawn by the radio device.

The electrical characteristics for VCC are shown in the table below.

Parameter Mode Limit

Vcc supply voltage

Nominal 3.6 V

Tolerance including ripple

Over-voltage limit 5.5 V

Maximum ripple < 100 mV @ <200

3.4 V - 4.0 V

kHz; < 20 mV @ > 200 kHz

Maximum allowable voltage drop

Measured at system connector pins.

LZT 123 8020 R1A

Burst transmission 200 mV

< 500 mA (average) Current drawn, at full TX power

< 2 A (peak)

SYSTEM CONNECTOR INTERFACE

Note! The radio device has no internal capacitance to supply the large

current peaks during GSM burst transmission. We recommend you follow these general guidelines:

• Fit a low ESR electrolytic capacitor close to the radio device:

> 1,000µF; <10mΩ ESR.

• Make sure power supply to radio device line resistance is < 200mΩ

5.5 Battery Charging Input (CHG_IN)(Reserved for future use)

This will only be available through the embedded applications in the GR47/GR48.

Note! This has not been implemented into any versions of module

software and is for future use

LZT 123 8020 R1A

SYSTEM CONNECTOR INTERFACE

5.6 Turning the Radio Device ON/OFF and the External Power Signal

Turning the Radio Device On

Figure 5.2 On timings and VIO performance

Symbol Parameters Conditions Min. Typ Max Unit

tON

VIO

PULSE

PRST

Reference time when VCC is within working

(1)

limits

Time after t0 when the ON/OFF pulse can begin

Time after start of ON/OFF pulse when VIO is active

Application ON/OFF pulse width

Internal Power-on reset signal initiates software

VCC > 3.2V

- - - -

ON/OFF = VCC

VCC > 3.2V 0 - - ms

VCC > 3.2V - 45.0 - ms

ON/OFF held low

400 500 - ms until detected by software

100 - 200 ms

CTS

(1)

The GR47 measures the voltage at VCC during the power-up sequence. It is

Time when software controlled CTS signal indicates module READY

CTS signal configured for RS232 hardware flow control, not GPIO pin

- 0.35 3.0

(2)

important that both VCC and ON/OFF reach a minimum of 3.2V before the ON/OFF low pulse is initiated.

(2)

In SERVICE mode.

LZT 123 8020 R1A

SYSTEM CONNECTOR INTERFACE

Turning the Radio Device Off

Figure 5.3 Off timings and VIO performance

Symbol Parameters Conditions Min. Typ Max Unit

SPD

PULSE

SCSD

OFF

Time for software pulse detection which initiates a software shutdown

Application ON/OFF pulse width

Software controlled shutdown deactivates VIO

Time when VCC power supply can be disabled

800 - - ms

1000 - - ms

(2)

VIO is

)

2.5) 10

0 - - ms

(3)

DISABLED

(2) It is a requirement from most GSM network providers that GSM products

properly detach from the network during a power-down sequence. In order to achieve this it is important that the VCC supply is not removed or turned off before VIO has been deactivated by the module.

LZT 123 8020 R1A

SYSTEM CONNECTOR INTERFACE

Hard Shutdown Sequence

ON/OFF

VIO

Figure 5.4 Hard Shutdown Sequence

HSD

PULSE

Symbol Parameters Conditions Min. Typ Max Unit

HSD

PULSE

(4) To implement the Hard Shutdown of the GR47, the ON/OFF pulse must be

held low until the sequence is complete. Ensure that ON/OFF is not released before VIO has been deactivated by the module.

A hard shut down is only necessary where a normal power down has failed,

this should only happen if the software has 'greyed out'. This has never been seen in the modules but is a safety mechanism build into the chipset where the power will be cut from the chips enabling the unit to be powered up normally.

Time to complete hardware shutdown

(4)

Application ON/OFF pulse width

5.6.1 VIO - 2.75V Supply

VIO provides an output voltage derived from an internal 2.75V regulator. Its electrical characteristics are shown below.

Parameter Min. Typ. Max. Units

2 - 11 s

ON/OFF low until VIO is disabled

10 - s

HSD

Output Voltage (I

Load current 75 mA

= 50 mA) 2.70 2.75 2.85 V

load

You can use this output for the following:

• to indicate that the radio device is powered;

• to power interface circuits, external to the radio device.

LZT 123 8020 R1A

SYSTEM CONNECTOR INTERFACE

5.7 Analogue Audio

Pin Signal Dir Description

57 AFMS O Audio from mobile station

59 ATMS I Audio to mobile station

60 AGND - Ground (return) for analogue audio

ATMS is the audio input, and AFMS is the audio output, of the radio device. These signals can be used in car kit mode.

There are three factory-set audio profiles:

• portable handsfree

• handset

• car kit

Portable handsfree is the factory-set default profile. The modification, configuration, manipulation and storage of audio profiles is achieved with the AT*E2EAMS (Audio Profile Modification) and AT*E2APR (Audio Profile).

5.7.1 Audio To Mobile Station - ATMS

ATMS is the analogue audio input to the radio device. Internally, the signal is sent to the CODEC (COder/DECoder), where it is converted to digital audio in PCM (Pulse Code Modulation) format. The encoded audio is sent to PCMOUT via the internal PCM bus.

ATMS provides a DC bias when it is used as the microphone input in Portable Handsfree applications. All other sources must be a.c.coupled to avoid attenuation of low frequencies, and to prevent incorrect biasing or damage to the ATMS input. Use a capacitor greater than the value shown in the table below.

The ATMS input is a passive network followed by the transmit part of the CODEC.

Parameter Limit

Application driving impedance (0.3 - 3.5 kHz)

≤ 300 Ω

AC coupling capacitance

Radio device input impedance (0.3 - 3.5 kHz) > 50 kΩ

Low frequency cut-off (- 3 dB) 300 Hz ± 50 Hz

High frequency cut-off (– 3 dB) > 3500 Hz ± 50 Hz

Output d.c. bias level car kit mode 0 V

LZT 123 8020 R1A

≥ 1 µF

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