Sony Ericsson GM 47 Technical Description
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Sony Ericsson GM 47 Technical Description

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GM 47/GM 48
Technical Description

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  • Page 1 GM 47/GM 48 Technical Description...
  • Page 2 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.

  • Page 3: Table Of Contents

    GM47/GM48 Technical description Contents INTRODUCTION ........................5 ........................5 VERVIEW .........................6 EATURES 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 ........................8 RECAUTIONS .........................9 BBREVIATIONS...
  • Page 4 GM47/GM48 Technical description AT COMMAND SUMMARY ....................35 TECHNICAL DATA......................38 CONTACT DETAILS......................40 BA/SEM/MS 02:0004 Rev C...

  • Page 5: 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.

  • Page 6: Features

    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...

  • Page 7: Sms

    GM47/GM48 Technical description 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.

  • Page 8: Sim Card

    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.

  • Page 9: Abbreviations

    GM47/GM48 Technical description 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 Cell Broadcast Service Cell Broadcast Messaging Circuit Switch Data Data Circuit Terminating Equipment Data Terminal Equipment...

  • Page 10: 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.

  • Page 11: Physical Dimensions

    GM47/GM48 Technical description 2.2 Physical Dimensions Figure 2.2 Physical dimensions of GM 47/48 The measures are given in millimetre’s. See also chapter 6, Technical Data. BA/SEM/MS 02:0004 Rev C...

  • Page 12: System Connector Interface

    Details of connector availability and sources are available from customer support on request. Figure 3.1 GM 47/48. View from the underside The table on next page provides the pin assignment of the different signals in the System Connector Interface as well as a short description of them.
  • Page 13 GM47/GM48 Technical description Signal Name Signal Type Description Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Supply Power Supply DGND Digital Ground Reserved for future use...
  • Page 14 GM47/GM48 Technical description networks side. Dig. 2.75 Flashing LED Power Out 2.75 Module powered indication. The VIO is a 2.75 V output that could power external devices to transmit data towards the GSM device to a 75mA max. TX_ON Dig 2.75 This output shall indicate when the GSM module is going to transmit the burst.

  • Page 15: General Electrical And Logical Characteristics

    GM47/GM48 Technical description Enable logger information if no flashing Former VPPFLASH ATMS Analogue Audio input to module AGND Analogue Analogue ground 3.2 General Electrical and Logical Characteristics Many of the signals present in the interface are high-speed CMOS logic inputs or outputs powered from 2.75 V ± 5 %. Whenever a signal is defined as Dig.

  • Page 16: Grounds

    Digital Ground AGND Analogue Ground There are two ground signals in GM 47/48, Analogue Ground (AGND) and Digital Ground (DGND). The analogue Ground is connected to pin number 60, and the Digital Ground is connected to the System Connector Interface through pin numbers 2, 4, 6, 8, 10 and Note: All the Ground pins have to be connected to the application.

  • Page 17: Regulated Power Supply

    Current Drive capability at TX Full Power < 600 mA (average)) < 2 A (Peak) GM 47/48 have not internal capacitance to supply the large current peaks during GSM transmission. Therefore on burst transmission the application DC source is responsible for providing the appropriate current.

  • Page 18: External 2.75 V (Vio)

    GM47/GM48 Technical description Parameter Minimum Typical Maximum Units Voltage HIGH Level (FALSE) By internal pull up only Voltage LOW Level (TRUE) 0.3*VCC Volts Ω Pull-up Resistance Internal pull up Figure 3.2ON/OFF and VIO performance Where the times are defined as follows: Time Description Unit...

  • Page 19: Analogue Audio

    GM47/GM48 Technical description 3.6 Analogue Audio Pins Name Description AFMS Audio From Mobile Station ATMS Audio To Mobile Station AGND Reference for analogue audio ATMS and AFMS are the audio input and output for the module. The analogue audio signals can be used in two different modes, Handsfree and Portable Handsfree.
  • Page 20 GM47/GM48 Technical description Parameter Limit < 300 Ω Application driving impedance (0.3 - 3.5 kHz) > 1 µF AC coupling capacitance >50ΚΩ Module input impedance (0.3 - 3.5 kHz) Low frequency cut-off (- 3 dB) 300 Hz ± 50 Hz High frequency cut-off (- 3 dB) >...

  • Page 21: Audio From Mobile Station (Afms)

    GM47/GM48 Technical description 3.6.2 Audio From Mobile Station (AFMS) AFMS is the analogue audio output from the module. When it is active, the output is derived from the PCM digital audio by the decoder part of the CODEC. The PCM data comes from PCMI on the system connector.

  • Page 22: Speaker Signals

    GM47/GM48 Technical description 3.8 Speaker Signals Speaker signals Function BEARP Microphone Positive Output BEARN Microphone Negative Output BEARP and BEARN are the speakers output pins. These outputs are in differential mode. 3.9 Digital Audio PCM signal Function PCMCLK PCM clock PCMSYNC PCM frame sync PCMULD...
  • Page 23 GM47/GM48 Technical description In the case where no external audio processing is performed, then it is necessary to connect the following signals at the system connector: PCMDLD and PCMI PCMULD and PCMO Electrical characteristics The Dig. 2.75 V CMOS Output / Input electrical characteristics shall apply, with DGND as the reference.

  • Page 24: Serial Data

    GM47/GM48 Technical description 3.10 Serial Data Name Description RS232 CCITT Nº Serial data to module Serial data from module Request To Send Clear To Send Data Terminal Ready 108.2 Data Carrier Detect Ring Indicator UART 2 Data Transmission UART 2 Data Reception UART 3 Data Transmission UART 3 Data Reception The serial channels are used as asynchronous communication links...

  • Page 25: Uart 1 (Rs232) - Rd, Td, Rts, Cts, Dtr, Dcd And Ri

    GM47/GM48 Technical description 3.10.1 UART 1 (RS232) - RD, TD, RTS, CTS, DTR, DCD and RI The UART1 signals form a 9 pin RS-232 (V.24) serial port, apart from the DSR (CCITT Nº 107) signal. DSR signal has been removed as it is usually connected to DTR in most systems.

  • Page 26: Control Signals - Rts, Cts, Dtr, Dcd, Ri

    GM47/GM48 Technical description 3.10.3 Control Signals - RTS, CTS, DTR, DCD, RI The control signals are active low, and hence when a standard interface IC is used (such as MAX3237), then standard RS-232 levels are obtained. These signals together with DGND, RD and TD form a 9-pin RS-232 data port (with the exception of the voltage levels and DSR).
  • Page 27 GM47/GM48 Technical description Clear To Send (CTS) CTS is an output from the module. The signals on this circuit are used to indicate that the DCE (the module when used for data transmission purposes) is ready to transmit data. Default level is high. The exact behaviour of CTS is defined by the AT+IFC command.

  • Page 28: Uart 2 - Td2, Rd2

    GM47/GM48 Technical description 3.10.4 UART 2 - TD2, RD2 The UART 2 consists of a full duplex serial communication. This involves the transmission and reception lines. The communication port shall work in one mode: Operation and Maintenance mode. Operation and Maintenance mode shall work in addition with the SERVICE signal.

  • Page 29: Sim Card Related Signals

    GM47/GM48 Technical description RD is an output used to send data on the UART 3 to the application system. The electrical characteristics shall be the same as RD. 3.11 SIM Card related signals Parameter Mode Signal Min. Typ. Max. Unit SIM supply Voltage SIMVCC High Level Input Voltage...

  • Page 30: Sim Detection - Sim Presence

    GM47/GM48 Technical description 3.11.1 SIM Detection – SIM Presence SIMDETECT is an input intended to be used to determine whether a SIM card has been inserted or removed in the external SIM card holder. It shall be normally wired to the "Card Inserted Switch" of the external SIM card holder.

  • Page 31: Buzzer

    GM47/GM48 Technical description 3.13 Buzzer Signal Description BUZZER Buzzer Output from module This is an output signal which allows the application to use pre- programmed melodies or sounds. Typical use would involve a transistor buffer with a piezoelectric sounder. The Dig. 2.75 V CMOS Output electrical characteristics shall apply, with DGND as the reference.

  • Page 32: Tx_On - Burst Transmission

    GM47/GM48 Technical description 3.15 TX_ON - Burst Transmission Signal Description TX_ON GSM module on transmission The TX_ON is a digital signal output. This shall indicate that the module is going to transmit the burst. Burst transmission is the time when a GSM transceiver unit. Dig 2.75 CMOS Output so general electrical characteristics are applicable.

  • Page 33: Real Time Clock

    GM47/GM48 Technical description 3.17 Real Time Clock The Real Time Clock provides the module with a time-of-day calendar with alarm and one hundred-year calendar to the main microprocessor. The real time clock operates with a separate power supply. Therefore, two modes of operation shall be distinguished: •...

  • Page 34: Antenna Connector

    GM47/GM48 Technical description 4 Antenna Connector The Antenna Connector is a hub for transmission of the Radio Frequency (RF) signals from the module to the external customer- supplied antenna. It is a MMCX connector that is mounted on the surface of the module. Most dealers should be able to supply this type of connector.
  • Page 35 GM47/GM48 Technical description 5 AT Command Summary The AT standard is a line-oriented command language. "AT" is an abbreviation of ATtention and it is always used to start sending a command line from a TE to the TA. TE stands for Terminal Equipment which is a computer of any size and TA stands for Terminal Adapter which is the modem part of the module.
  • Page 36 GM47/GM48 Technical description Network registration AT+CREG USSD AT+CUSD, AT+CSSN Security & Locks AT+CLCK, AT+CPWD, AT+CPIN, AT*EPEE SETTINGS Restting AT*EMAR Ring signal settings AT*ERIL, AT*ERIN, AT*ERIP, AT*ESIL, AT*ESMA, AT*ESMM, AT*ESOM ME STATUS INFORMATION AT*ECAM, AT+CSQ, AT+CIND, AT+CPAS, AT+CMER ERROR CONTROL AT+CMEE, AT+CEER SMS &...
  • Page 37 GM47/GM48 Technical description GPRS PDP Context Activation AT+CGACT Manual PDP Context Activation AT+CGANS GPRS Attachment AT+CGATT Enter Data State AT+CGDATA Define PDP Context AT+CGDCONT GPRS Event Reporting AT+CGEREP Show PDP Address AT+CGPADDR Quality of Service Profile (MINIMUM AT+CGQMIN ACCEPTABLE) Quality of Service Profile (REQUESTED) AT+CGQREQ GPRS Network registration Status AT+CGREG...
  • Page 38 Max < 37ppm Typical < 20ppm Radio specifications Frequency range: GM 47: EGSM 900 MHz and 1800 MHz (Dual Band) GM 48: GSM 850 MHz and 1900 MHz (Dual Band) Maximum RF output power: 2 W / 1 W Ω...
  • Page 39 GM47/GM48 Technical description Shock response spectrum II, peak acceleration: - 3 shocks in each axis and direction: 1000 m/s , 6 ms Bump: Acceleration 250 m/s Free fall transportation: 1.2 m Rolling pitching transportation: Angle: ±35 degrees, period: 8s Static load: 10 kPa Low air pressure/high air pressure: 70 kPa / 106 kPa...
  • Page 40 GM47/GM48 Technical description 7 Contact details To contact customer support please use the details below. Customer Support Maplewood Building Chineham Business Park Basingstoke RG24 8YB E mail : modules.support@sonyericsson.com modules.info@sonyericsson.com BA/SEM/MS 02:0004 Rev C...

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