Sony Ericsson GM47 Parts list manual

GM 47/GM 48
Technical Description

CE
The product described in this manual conforms to the Radio Equipment and Telecommunication 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 301489-7 and EN60950.
The information contained in this document is the proprietary information of Sony Ericsson Mobile
Communications. 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, 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, the copyright holder.
Third edition (June 2002)
Sony Ericsson Mobile Communications. publishes this manual without making any warranty as to the
content contained herein. Further Sony Ericsson Mobile Communications. 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.
All rights reserved.
©Sony Ericsson Mobile Communications., 2002
Publication number:
Printed in UK

GM47/GM48 Technical description
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Contents
1 INTRODUCTION....................................................................................................................5
1.1 OVERVIEW ........................................................................................................................5
1.2 FEATURES.........................................................................................................................6
1.2.1 Type of Mobile Station .............................................................................................6
1.2.2 SMS .........................................................................................................................7
1.2.3 Voice calls................................................................................................................7
1.2.4 Data..........................................................................................................................7
1.2.5 SIM Card..................................................................................................................8
1.2.6 Power consumption..................................................................................................8
1.2.7 Other features..........................................................................................................8
1.2.8 Development Kit.......................................................................................................8
1.3 PRECAUTIONS...................................................................................................................8
1.4 ABBREVIATIONS.................................................................................................................9
2 MECHANICAL DESCRIPTION............................................................................................10
2.1 INTERFACE DESCRIPTION.................................................................................................10
2.2 PHYSICAL DIMENSIONS....................................................................................................11
3 SYSTEM CONNECTOR INTERFACE.................................................................................12
3.1 OVERVIEW ......................................................................................................................12
3.2 GENERAL ELECTRICAL AND LOGICAL CHARACTERISTICS....................................................15
3.2.1 General Protection Requirements..........................................................................15
3.3 GROUNDS .......................................................................................................................16
3.3.1 The Analogue Ground............................................................................................16
3.3.2 The Digital Ground (DGND)...................................................................................16
3.4 REGULATED POWER SUPPLY ...........................................................................................17
3.4.1 Power Supply (VCC)..............................................................................................17
3.5 ON/OFF AND EXTERNAL POWER SIGNALS.......................................................................17
3.5.1 Module ON/OFF.....................................................................................................17
3.5.2 External 2.75 V (VIO).............................................................................................18
3.6 ANALOGUE AUDIO ...........................................................................................................19
3.6.1 Audio To Mobile Station (ATMS) ...........................................................................19
3.6.2 Audio From Mobile Station (AFMS).......................................................................21
3.7 MICROPHONE SIGNALS....................................................................................................21
3.8 SPEAKER SIGNALS ..........................................................................................................22
3.9 DIGITAL AUDIO ................................................................................................................22
3.10 SERIAL DATA...................................................................................................................24
3.10.1 UART 1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI...................................25
3.10.2 Serial Data Signals - RD, TD .................................................................................25
3.10.3 Control Signals - RTS, CTS, DTR, DCD, RI..........................................................26
3.10.4 UART 2 - TD2, RD2...............................................................................................28
3.10.5 UART 3 - TD3, RD3...............................................................................................28
3.11 SIM CARD RELATED SIGNALS...........................................................................................29
3.11.1 SIM Detection – SIM Presence..............................................................................30
3.12 SERVICE/PROGRAMMING .................................................................................................30
3.13 BUZZER ..........................................................................................................................31
3.14 LED................................................................................................................................31
3.15 TX_ON - BURST TRANSMISSION......................................................................................32
3.16 TIMESTAMP .....................................................................................................................32
3.17 REAL TIME CLOCK...........................................................................................................33
4 ANTENNA CONNECTOR....................................................................................................34

GM47/GM48 Technical description
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5 AT COMMAND SUMMARY.................................................................................................35
6 TECHNICAL DATA..............................................................................................................38
7 CONTACT DETAILS............................................................................................................40

GM47/GM48 Technical description
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1 Introduction
1.1 Overview The GM47/GM48 belong to a new generation of Sony Ericsson
Mobile Communications GSM modules. This document describes the
main characteristics and functionality of the GM 47/48, two dual band
products for 900/1800 MHz and 850/1900 MHz GSM bands
respectively.
They are intended to be used in both machine-to-machine applications
and man-to-machine applications. The module serves its purpose
when there is a need for sending and receiving data (by SMS, CSD,
HSCSD, or GPRS), as well as making voice calls over the GSM
network.
GM47/GM48 are business-to-business products. It is intended to be
sold to manufacturers, system integrators, applications developers-
developing solutions with wireless communication. The module is
intended to be integrated by the system integrator within an
application. The module and the external application will form a
system for wireless communication.
A typical system is one where a micro controller in an external
application communicates with the module over its serial interface.
The micro controller will control the module, via the supported set of
AT commands. It is assumed that the system integrators have a high
technical knowledge and the ability to integrate the module into a
system. For the GM47/GM48 modules some interesting applications
are the following:
•Fleet and Asset Management
•Vending Machines
•Security and Alarm
•Other telemetry applications

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1.2 Features The module performs a set of telecom services (TS) according to
GSM standard phase 2+, ETSI and ITU-T. The functions of the
module are implemented by issuing AT commands over the serial
interface. Supported AT commands are listed in section 5, these are
defined further in GSM 7.05/7.07 and the GM47/GM48 integrators
manual.
1.2.1 Type of Mobile Station
The GM 4X family are normal dual band type of MS with the
following characteristics.
GM 47 GSM 900 E-GSM 900 GSM 1800
Frequency Range
(MHz) TX: 890-915
RX: 935-960
TX: 880-890
RX: 925-935
TX: 1710-1785
RX: 1805-1880
Channel spacing 200 kHz 200 kHz
Number of channels 173 Carriers *8 (TDMA)
GSM: Channels 1 to 124
E-GSM: Channels 975 to 1023
374 Carriers *8 (TDMA)
DCS: Channels 512 to 885
Modulation GMSK GMSK
TX Phase Accuracy < 5º RMS Phase error (burst) < 5º RMS Phase error (burst)
Duplex spacing 45 MHz 95 MHz
Receiver sensitivity at
antenna connector < - 102 dBm < - 102 dBm
Transmitter output
power at antenna
connector
Class 4
2W (33 dBm)
Class 1
1W (30 dBm)
Automatic hand-over between GSM 900 and GSM 1800
GM 48 GSM 850 GSM 1900
Frequency Range (MHz) TX: 824-849
RX: 869-894
TX: 1850-1910
RX: 1930-1990
Channel spacing 200 kHz 200 kHz
Number of channels 123 carriers *8 (TDMA)
GSM: Channels 128 to 251
298 Carriers *8 (TDMA)
PCS: Channels 512 to 810
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 < - 102 dBm < - 102 dBm
Transmitter output power at
antenna connector Class 5
0.8 W (29 dBm)
Class 1
1W (30 dBm)
Automatic hand-over between GSM 850 and GSM 1900

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1.2.2 SMS The module supports the following SMS services:
•Sending: MO, both PDU and Text mode supported.
•Receiving: MT, both PDU and Text mode supported.
•CBM is a service, in which a message is sent to all subscribers
located in one or more specific cell(s) in the GSM network, for
example, cell location information.
•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 module supports upto 6 concatenated messages to extend this
function.
1.2.3 Voice calls The GM47/GM48 offers the capability of MO and MT voice calls, as
well as supporting emergency calls. In addition to this multiparty, call
waiting and call deflection features are available. Some of these
features are operator specific.
The module offers normal analogue input/output lines, analogue audio
input/ output lines in differential modes, and digital audio interface,
with the possibility of accessing internal points within the digital
audio lines. Moreover, the GM47/GM48 have embedded echo
canceller and noise suppresser, which provide high quality audio.
The module supports HR, FR and EFR voice coding, provided that
EFR is available in the network.
1.2.4 Data The module supports the following data protocols:
•General Packet Radio Service (GPRS). The modules are Class B
Terminals, which provides simultaneous activation and attach of
GPRS and GSM services. The GM47/GM48 modules are GPRS
4+1 devices, which are capable of transmitting in one timeslot per
frame (uplink), and receiving in a maximum of four timeslots per
frame (downlink).
•Circuit Switched Data (CSD). GM47/GM48 modules are capable
of establishing a circuit switch data link at 9.6 kbps.
•High Speed Circuit Switched Data (HSCSD).
GM47/GM48supports HSCSD communication, with one timeslot
per frame capacity in the uplink and two timeslots per frame
capacity in the downlink (2+1).

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1.2.5 SIM Card
The module supports the connection of an external SIM Card with 3V
or 5 V technology, via the 60-pin system connector. The module does
not have an internal SIM holder.
1.2.6 Power consumption
Stand-by Transmit/Operation
GSM 850 & 900 MHz <5 mA 275 mA (2A peak)
GSM 1800 & 1900 MHz <5 mA 250 mA (1.75A peak)
Note! The power consumption during transmission is measured at
maximum transmit power.
1.2.7 Other features
•07.10 Multiplexing
•GPS interoperability
•SIM application toolkit, class 2 release 96 compliant
1.2.8 Development Kit
Sony Ericsson Mobile Communications provides the opportunity to
test the module in a limited scale, before ordering a large quantity.
With the development kit you can quickly get started with the module.
The kit includes necessary accessories (software and hardware) that
you will need for your test purposes. It also includes the following:
•GSM module GM 47 or GM 48
•Integrator’s Manual
The Integrator’s Manual provides you with all the information you
need to be able to integrate the module with your application.
This is available from your regional salesperson or M2M customer
support (see section 7)
1.3 Precautions The GM47/GM48should be handled like any mobile station. In the
Integrators’ Manual you will find more information about safety and
product care. In the Technical Data chapter in this document the

GM47/GM48 Technical description
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environmental and electrical limits are specified. Never exceed these
limits to ensure the module is not damaged.
1.4 Abbreviations
Abbreviation Explanation
ATMS Audio To Mobile Staition
AFMS Audio From Mobile Station
CBS Cell Broadcast Service
CBM Cell Broadcast Messaging
CSD Circuit Switch Data
DCE Data Circuit Terminating Equipment
DTE Data Terminal Equipment
DTMF Dual Tone Multi Frequency
EFR Enhanced Full Rate codec
EMC Electro-Magnetic Compatibility
ETSI European Telecommunications Standards Institute
FR Full Rate codec
GPRS General Packet Radio Service
GPS Global Positioning System
GSM Global System for Mobile Comunication
HR Half Rate codec
HSCSD High Speed Circuit Switched Data
ITU-T International Telecommunication Union – Telecommunications
Standardisation Sector
ME Mobile Equipment
MMCX Micro Minature Coax
MO Mobile Originated
MS Mobile Station
MT Mobile Terminated
PCM Pulse Code Modulation
PDU Protocol Data Unit
RLP Radio Link Protocol
RF Radio Frequency
RFU Reserved for Future Use
RTC Real Time Clock
SDP Service Discovery Protocol
SMS Short Message Service
SIM Subscriber Identity Module
TBD To Be Defined

GM47/GM48 Technical description
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2 Mechanical Description
2.1 Interface Description
The picture below presents the conceptual mechanical design of the
GM 47/48. The GM 47/48 are protected with AISI 304 Stainless Steel
covers suitable to fulfil the environmental and EMC requirements.
Dimensions, the position of the different connectors and mounting
holes are shown in figure 2.2.
Figure 2.1 GM 47/48, view from the underside