GM 47/GM 48 Technical Description
CE The product described in this manual conforms to the Radio and Teleterminals directive 1999/5/EC with requirements covering EMC directive 89/336/EEC and Low Voltage directive 73/23/EEC. SAR statement: This product is intended to be used with the antenna or other radiating element 20 cm far away of the any part of the human body. The information contained in this document is the proprietary information of Sony Ericsson Mobile Communications.
GM47/48 Technical description Contents 1 INTRODUCTION ...........................................................................................................5 1.1 OVERVIEW ...............................................................................................................5 1.2 FEATURES................................................................................................................6 1.2.1 Type of Mobile Station ..................................................................
GM47/48 Technical description 5 AT COMMAND SUMMARY.......................................................................................... 36 6 TECHNICAL DATA .....................................................................................................
GM47/48 Technical description 1 Introduction 1.1 Overview The GM47/48 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.
GM47/48 Technical description 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. 1.2.1 Type of Mobile Station The GM 4X family are normal dual band type of MS with the following characteristics.
GM47/48 Technical description Automatic hand-over between GSM 850 and GSM 1900 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. • SMS COMMAND according to GSM 03.40.
GM47/48 Technical description • 1.2.5 High Speed Circuit Switched Data (HSCSD). GM47/48 support HSCSD communication, with one timeslot per frame capacity in the uplink and two timeslots per frame capacity in the downlink (2+1). SIM Card The module supports the connection of an external SIM Card with 3V and 5 V technology, via the 60-pin system connector. The module does not have an internal SIM holder. 1.2.
GM47/48 Technical description The Integrator’s Manual provides you with all the information you need to be able to integrate the module with your application. 1.3 Precautions The GM47/48 should 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 environmental and electrical limits are specified. Never exceed these limits to ensure the module is not damaged. 1.
GM47/48 Technical description SDP Service Discovery Protocol SMS Short Message Service SIM Subscriber Identity Module TBD To Be Defined BA/SEM/MS 02:0004 Rev B 10
GM47/48 Technical description 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.
GM47/48 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.
GM47/48 Technical description 3 System Connector Interface 3.1 Overview The electrical connections to the module (except the antenna), are set through the System Connector Interface. The connector shall allow the following connections: board to board and board to cable. The table below provides the two possible mating connectors for the application system: No Pin Part Number Description 1 60 9462-9101-606 Female connector (Speed Tech). BoardBoard 2 60 TBD Female connector.
GM47/48 Technical description 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. VCC - Supply Power Supply 12. DGND - - Digital Ground 13. Reserved for future use 14.
GM47/48 Technical description 33. LED O Dig. 2.75 Flashing LED 34. VIO O 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. 35. TX_ON O Dig 2.75 This output shall indicate when the GSM module is going to transmit the burst. 36. RI O Dig. 2.75 Ring Indicator 37. DTR I Dig. 2.75 Data Terminal Ready 38. DCD O Dig. 2.75 Data Carrier Detect 39. RTS I Dig. 2.
GM47/48 Technical description 58. SERVICE I 12V/2.7V Flash programming voltage for the MS. Enable logger information if no flashing Former VPPFLASH 3.2 59. ATMS I Analogue Audio input to module 60. AGND - - Analogue ground 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. 2.75 V, the following electrical characteristics shall apply.
GM47/48 Technical description 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 12. Note: All the Ground pins have to be connected to the application. The AGND is connected to the DGND in the ME, and only there. It is important that the AGND and the DGND are separated in the application. 3.3.
GM47/48 Technical description 3.4.1 Power Supply (VCC) The VCC supplies the module with external power. Any other voltage needed is generated internally. Parameter Mode Limit Voltage to be applied Nominal 3.6 Volts Tolerance including ripple Over voltages 2 3.4 Volts - 4.0 Volts 5.5 Volts 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.
GM47/48 Technical description Figure 3.2ON/OFF and VIO performance Where the times are defined as follows: Time Description Min Typ tMR Time to start an ON/OFF operation 1 1.5 tPWR Time for module start-up one ON/ OFF signal has set to TRUE 100 Max Unit S 200 Ms 3.5.2 External 2.75 V (VIO) The VIO has been derived from a 2.75 V regulator. It is possible to use this output as a power supply at 2.75 V with a maximum of 75mA.
GM47/48 Technical description ATMS and AFMS are the audio input and output for the module. The analogue audio signals can be used in two different modes, Normal and Portable Handsfree. Handsfree This mode is referred to as Audio To Mobile Station (ATMS) and Audio From Mobile Station (AFMS). It is used by audio accessories such as Handsets and Handsfree equipment. Portable Handsfree This mode activates a different amplification factor in the Mobile Equipment (ME).
GM47/48 Technical description Portable Handsfree mode 2 V ± 0.1 V Additional Gain in Portable Handsfree mode 28.5 dB • Maximum input level at ATMS 245mVrms output at PCMO = 3dBm0 • The following table is with nominal PGA (Programmable Gain Settings) • For more information see AT commands Input Input Volts mVrms TXAGC dB AUXI1 Gain PCMO dBm0 ATMS 245 0 13 3 Maximum input level at MICI 61.4mV rms output at PCMO = 3dBm0 Input Input Volts mVrms TXAGC dB AUXI1 Gain PCMO dBm0 MICI 61.
GM47/48 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. It is also used as an ear-piece driver for the Portable Hands Free accessory. Parameter Limit Speaker impedance 64 Ω το 1ΚΩ AFMS Output Capacitance 2.2 µF ±10% Levels (THD < 5 %) Drive capability into 5 kΩ (0.3 3.5 kHz) > 2.
GM47/48 Technical description Parameter CCO 3.8 Limit 2.0 - 2.5 V Speaker Signals Pin Speaker signals Dir Function 55 BEARP O Microphone Positive Output 56 BEARN O Microphone Negative Output BEARP and BEARN are the speakers output pins. These outputs are in differential mode. 3.
GM47/48 Technical description In case no external audio processing is performed, then it is needed to connect 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. PCM interface format The PCM format (for PCMULD and PCMDLD) shall follow a linear PCM data I/O format of an industry standard Texas Instrument DSP. It is the same format as the one used between the CODEC and the DSP.
GM47/48 Technical description The serial channels are used as asynchronous communication links between an application system or accessory units connected to the Module. They consist of three UART's. One of them, the first and main one, shall have RS-232 functionality. The rest shall behave as general- purpose serial data lines, except for special applications (such as accessories for the UART2 and Bluetooth for UART 3). The Dig. 2.
GM47/48 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. The signal levels do not match the standard RS-232 (V.28) levels. The relationship between the levels is shown in the table below RS - 232 Level RD, TD RTS, CTS, DTR, DCD, RI 2.75 V CMOS Level <-3V 1 OFF > 1.93 >+3V 0 ON < 0.
GM47/48 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). RTS and CTS shall be capable of transmitting at 1/10 of the data transmission speed for data rates, up to 460 kbit/s. (Byte oriented flow control mechanism).
GM47/48 Technical description Clear To Send (CTS) CTS is an output from the module. The signals on this circuit shall be 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 shall be defined by an AT command. Software or hardware flow control can be selected. This is a Dig. 2.75 CMOS Output and general characteristics are applicable.
GM47/48 Technical description Note: DSR is considered permanently ready for a module, therefore any DGND connection may be taken as DSR functionality. 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 SERVICE signal.
GM47/48 Technical description Received Data 3 (RD3) 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 3V SIMVCC 2.7 3.0 3.3 V 4.5 5.0 5.5 V 2.1 3.0 V 3.5 5.0 V 0 0.9 V 0 1.5 V 2.7 3.0 V 4.7 5.0 V 0 0.2 V 0 0.2 V 2.4 3.0 V 4.4 5.0 V 0 0.35 V 0 0.
GM47/48 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, but different implementation could be handled. On having High level it will mean, "SIM card missing". While pulled down to Low the module shall understand it as "SIM card inserted". SIMDETECT is Dig. 2.
GM47/48 Technical description 3.13 Buzzer Pin Signal Description 31 BUZZER Buzzer Output from module This is an output signal which allows the application to use preprogrammed 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. 3.14 LED Pin Signal Description 33 LED LED Output from module This is an output signal which allows the use of an external LED.
GM47/48 Technical description 3.15 TX_ON - Burst Transmission Pin Signal Dir Description 35 TX_ON O 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. 3.16 Timestamp Pin Signal Dir Description 32 TIMESTAMP O Global Positioning System Timestamp TIMESTAMP is a Dig. 2.
GM47/48 Technical description 3.17 Real Time Clock The Real Time Clock provides 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: RTC Normal operation: This is when the MS is powered, and it does not take into account if the MS is in OFF, ON or SLEEP mode. RTC Backup operation: This operation is performed when the MS is not powered, VCC = 0V.
GM47/48 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 customersupplied antenna. It is a microminiature coaxial MMCX connector that is mounted on the surface of the module. One provider of Antenna Connectors is IMS. This table provides the electrical characteristics at the antenna interface.
GM47/48 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. The command line consists of a string of alphanumeric characters.
GM47/48 Technical description AT*ECPI ME STATUS INFORMATION AT*ECAM, AT+CSQ, AT+CBC, AT+CIND, AT+CPAS, AT+CMER ERROR CONTROL AT+CMEE, AT+CEER SMS & CB Settings AT*ESTL, AT+CPMS, AT+CRES, AT+CSAS, AT+CSCA, AT+CSMS, AT+CNMI, AT+CSDH, AT+CSMP, AT+CGSMS SMS-Command AT+CMGC Read / write SMS AT+CMGD, AT+CMGW, AT+CMGL, AT+CMGR Send SMS AT+CMGS, AT+CMSS PHONEBOOK Read / write / find AT+CPBS, AT+CPBR, AT+CPBW, AT+CPBF Call screening AT*ECAR, AT*ECAS, AT*ECAW Groups AT*EGIR, AT*ESAC, AT*ESCG, AT*ES
GM47/48 Technical description HSCSD AT+CHSR, AT+CHSU 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 ACCEPTABLE) AT+CGQMIN Quality of Service Profile (REQUESTED) AT+CGQREQ GPRS Network registration Status AT+CGREG Extension of ATD for GPRS ATD* NETWORK INFORMATION Cell information
GM47/48 Technical description 6 Technical Data Mechanical specifications Maximum length: 50 mm Maximum width: 33 mm Maximum thickness: 6.82 mm (without system connector pins length) Weight: 18,5 g Power supply voltage, normal operation Voltage: 3.6V Nominal Tolerance ±0.2V Ripple: <100mV @ 200KHz, <20mV @>200KHz Voltage must always stay within a normal operating range, ripple included.
GM47/48 Technical description Shock response spectrum II, peak acceleration: - 3 shocks in each axis and direction: 1000 m/s 2, 6 ms Bump: Acceleration 250 m/s 2 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 Storage SMS Storage capacity 40 in ME In addition the unit can handle as many SMS as the SIM can store (SIM dependent).
