GS64 GSM/GPRS Modem Integrators Manual
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.
Revision History Edition Change Information First First Edition Second Updated FCC marking requirements Modified description of VREF function Signal connectivity table updated Modified description of UART1 signal behavior LZT 123 1836 3
Contents Overview....................................................................................................... 9 1 Introduction.......................................................................................... 10 1.1 TARGET USERS......................................................................................................... 10 1.2 PREREQUISITES......................................................................................................... 10 1.3 MANUAL STRUCTURE ..
2.6.2 RADIO FREQUENCY (RF) EXPOSURE AND SAR ..................................................... 21 2.6.4 DISPOSAL OF OLD ELECTRONIC EQUIPMENT ...................................................... 23 2.6.3 2.7 3 PERSONAL MEDICAL DEVICES ............................................................................ 22 PRODUCT MARKING ................................................................................................. 23 ABBREVIATIONS .....................................................
5.9.3 5.10 5.10.1 TURNING THE MODULE OFF .............................................................................. 50 ANALOGUE AUDIO................................................................................................ 52 AUXILIARY AUDIO TO MOBILE STATION (AUXIP, AUXIN)...................................... 53 5.10.2 AUXILIARY AUDIO FROM MOBILE STATION (AUXOP, AUXON) .............................. 53 5.10.3 MICROPHONE SIGNALS (MICIP, MICIN) .............................................
5.17.1 EMBEDDED APPLICATIONS................................................................................. 70 5.18 KEYBOARD SIGNALS (KEYROW, KEYCOL)................................................................ 72 5.19 ANALOGUE TO DIGITAL CONVERTERS (ADIN1, ADIN2, ADIN3, ADIN4) ................... 72 5.20 BURST TRANSMISSION (TX_ON) ............................................................................. 74 5.21 REAL TIME CLOCK ..............................................................
7.5.5 8 POSSIBLE COMMUNICATION DISTURBANCES ...................................................... 87 Embedded Applications ........................................................................ 88 8.1 FEATURES ................................................................................................................ 88 8.2 IMPLEMENTATION .................................................................................................... 88 8.2.1 8.2.2 9 LIMITATIONS.........................
Overview LZT 123 1836 9
1 Introduction 1.1 Target Users The GS64 wireless modems 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.
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. 1.4 Notation The following symbols and admonition notation are used to draw the readers attention to notable, or crucially-important information.
1.5 Acknowledgements Parts of this document, including text passages, tables and illustrations, are reproduced from copyright information by kind permission of Agere Systems Inc.
2 GS64 WIRELESS MODEM 2.1 About the Gx64 Family The Sony Ericsson Gx64 family of devices are Quad Band GSM/GPRS wireless modems operating in the GSM 850/900/1800/1900 bands. The products belong to a new generation of Sony Ericsson wireless modems, and are intended to be used in machine-to-machine applications and man-to-machine applications. They are used when there is a need to send and receive data (by SMS, CSD, or GPRS), and make voice calls over the GSM network.
MS GSM NETWORK SIM SIM SYSTEM INTERFACE DC POWER GSM GSM ENGINE ENGINE STATUS & RESPONSE EMBEDDED APPLICATION DCE DCE DTE DTE COMMAND & CONTROL Figure 2.2-1 Main Blocks in a Wireless System (embedded application) MS GR64 SIM GSM NETWORK SIM STATUS & RESPONSE DTE DTE SYSTEM INTERFACE DC POWER GSM GSM ENGINE ENGINE DCE DCE COMMAND & CONTROL Figure 2.
In accordance with the recommendations of ITU-T (International Telecommunication Union - Telecommunications Standardization Sector) V.24, the TE communicates with the MS over a serial interface. The functions of the wireless modem follow the recommendations provided by 3GPP (3rd Generation Partnership Project) and ITU-T. that was established in December 1998.
2.3.2 Short Message Service The wireless modem 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 3GPP TS 23.
CSD (Circuit Switched Data) The GS64 wireless modem is capable of establishing a CSD communication at 9.6 kbps over the air. 2.3.5 GPRS Multi-Slot Support GSM Multi-slot classes supported by Gx64 devices Multislot Maximum slot allocation Allowable Class Downlink Uplink Active Configuration 8 4 1 5 1 up; 4 down 1 up; 4 down 10 4 2 5 2 up; 3 down Max data rate 8-12Kbps Send 32-48Kbps Receive 8-12Kbps Send 32-48Kbps Receive 16-24Kbps Send 24-36Kbps Receive 2.3.
The power consumption figures shown represent average current for maximum transmitted power, single uplink (transmit) slot, single downlink (receive) slot. The module will consume more average power in different multi-slot configurations, the worst case being that of two uplink and three downlink slots. 2.3.
2.4 Service and Support 2.4.1 Web Pages Visit the Sony Ericsson M2M extranet web site for the following information: where to buy wireless modems or for recommendations concerning accessories and components local contact details for customer support in your region FAQs (frequently asked questions) documentation related to integrating the module, including application notes, design guides and AT command manuals Access to the Sony Ericsson extranet site requires a user account and password.
2.4.3 M2mpower Application Guide The M2mpower Application Guide provides users with all the information they need to build an application using the M2mpower support environment. This manual is supplied as part of the M2mpower package. 2.4.4 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.
2.6.
Governments around the world have adopted comprehensive international safety guidelines, developed by scientific organizations, e.g. ICNIRP (International Commission on Non-Ionizing Radiation Protection) and IEEE (The Institute of Electrical and Electronics Engineers Inc.), through periodic and thorough evaluation of scientific studies. These guidelines establish permitted levels of radio wave exposure for the general population.
2.6.4 Disposal of Old Electronic Equipment This symbol on the product or on its packaging indicates that this product shall not be treated as household waste. Instead it shall be handed over to an appropriate collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product.
3 ABBREVIATIONS Abbreviation Explanation ADC Analogue to Digital Converter 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 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
Abbreviation Explanation 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 LZT 123 1836 25
Integrating the Wireless Modem LZT 123 1836 26
4 Mechanical Description 4.1 Interface Description The pictures below show the mechanical design of the wireless modem along with the positions of the different connectors and mounting holes. The wireless modem is protected with tin coated steel ASI 1008/1010 covers that meet the environmental and EMC requirements. system connector wireless modem shielded circuits antenna connector Figure 4.1-1 Wireless modem viewed from below integrated SIM holder solder tab Figure 4.
Please note the following: Keypad, display, microphone, speaker and battery are not part of the wireless modem For the GS64 variant without an integrated SIM holder, the SIM card is mounted in the user application, external to the wireless modem (this is also an option for the integrated SIM holder variant) The GS64 variant without an integrated SIM holder has no components mounted on the top-side The System Connector is a 100-pin, narrow (0.5 mm) pitch type designed for boardto-board mating.
4.2 Physical Dimensions Figure 4.2-1 Dimensions of the Wireless modem (Integrated SIM variant) Measurements are given in millimeters. See also Technical Data, in Section 10 .
5 System Connector Interface 5.1 Overview Electrical connections to the wireless modem (except the antenna), are made through the System Connector Interface. The system connector is a 100-pin, narrow (0.5 mm) pitch device designed for board-to-board connectivity. Figure 5.1-1 below shows the numbering of the connector pins. Pin 100 Pin 2 Pin 99 Pin 1 Figure 5.
Table 5.2-1 Pin Assignments Pin Name Direction 1 GND - 2 VCC Input 3 GND - 4 VCC Input 5 GND - 6 VCC Input 7 GND - 8 VCC Input 9 GND - 10 VCC Input 11 GND - 12 VCC 13 Function PIN Connection Required Ground Yes DC power Yes Ground Yes DC power Yes Ground Yes DC power Yes Ground Yes DC power Yes Ground Yes DC power Yes Ground Yes Input DC power Yes CHG_IN Input Battery charger power 14 SIMVCC Output 1.8V or 3.
Pin Name Direction 33 PON_L Input 34 VUSB 35 Function PIN Connection Required Device on/off control Yes2 Output USB DC power Yes3 USBDP In/Out USB data positive Yes3 36 USBDN In/Out USB data negative Yes3 37 LED1 Output LED control 38 LED2 Output LED control 39 TX_ON Output Transmit indication 40 GPIO1 In/Out General purpose IO 41 GPIO2 In/Out General purpose IO 42 Reserved 43 GPIO3 In/Out General purpose IO 44 GPIO4 In/Out General purpose IO 45 GPIO5
Pin Name 69 PCMDFM Output Serial PCM data from module to host 70 SSPCLK In/Out SPI clock 71 SSPFS In/Out SPI frame synchronization 72 SSPDTM Input SPI data to module from host 73 SSPDFM Output SPI data to host from module 74 MMCCLK Output SD/MMC card clock 75 MMCCMD In/Out SD/MMC card command/response 76 MMCDAT0 In/Out SD/MMC card data 0 77 MMCDAT1 In/Out SD/MMC card data 1 78 MMCDAT2 In/Out SD/MMC card data 2 79 MMCDAT3 In/Out SD/MMC card data 3 80 MMCMD_EN O
1 - These signals are required if the external SIM interface is used 2 - At least one of these interfaces is required to be connected 3, 4 NOTE 5 - At least one of these interfaces is required to be connected - These pin connections are required for sleep mode operation 5.3 Dealing with Unused pins Integrators applications may connect all of the GS64 signals pins, or just those necessary for minimal operation, or most commonly some other permutation.
5.4 General Electrical and Logical Characteristics The electrical characteristics in this document refer to the behavior of the device under specified conditions. Electrical requirements refer to conditions imposed on the user for proper operation of the device. All IO to and from the GS64 is 1.8V unless otherwise stated. For user applications employing other logic voltage technology it may be necessary to implement level translators on the host-side circuitry in order to achieve level compatibility.
5.5 Grounds Pin Name Direction Function 1 GND - Ground 3 GND - Ground 5 GND - Ground 7 GND - Ground 9 GND - Ground 11 GND - Ground 96 AREF - Analogue reference There are two ground connections in the wireless modem, AREF (analogue ground) and GND (digital ground). Pin assignments are shown in the table above. AREF and GND are connected at a single point inside the wireless modem, however they must not be joined together in the user application. NOTE 5.5.
5.5.2 Common Ground (GND) GND is the reference, or return signal, for all system interface digital signals, radio section power, and is also the DC return for the power supply, VCC. User application circuitry should connect all GND pins together in order to carry the high current drawn by the wireless modem.
5.6 Regulated Power Supply Input (VCC) Pin Name Direction Function 2 VCC Input DC power 4 VCC Input DC power 6 VCC Input DC power 8 VCC Input DC power 10 VCC Input DC power 12 VCC Input DC power Power is supplied to the wireless modem VCC pins, from an external source. User application circuitry should connect all VCC pins together in to carry the current drawn by the wireless modem. The electrical characteristics for VCC are shown in the following table.
The wireless modem has insufficient internal capacitance to supply the large current peaks during GSM burst transmission - use the following TIP general guidelines in designing the application power supply. Fit a low ESR electrolytic capacitor close to the wireless modem (>1,000 µF, with an ESR < 100 mΩ) Ensure power supply to wireless modem line resistance is < 200 mΩ The module has approximately 40µF of internal capacitance across the VCC pins.
5.7 Voltage Reference (VREF) Pin Name Direction 65 VREF Input Function Host application voltage reference The GS64 has level shifter circuits on each digital IO interface. This allows applications with different logic technology to interface to the module without having to perform voltage level-shifting on the host circuitry. VREF is connected to the hostside level-shifters. This pin must be connected to your digital IO voltage source. VREF Input Parameter Min VREF input voltage 1.
5.8 Battery Charging Input (CHG_IN) Pin Name 11 CHG_IN Direction Input Function Battery charger power For battery powered applications, the GS64 provides a charge input (CHG_IN) pin to aid and support battery charging. A typical application would power the wireless modem directly from a battery source connected to VCC (pins 2, 4, 6, 8, 10) then provide a dc power source to the CHG_IN connection (pin 11). The GS64 can control an internal switching FET which creates a charging pathway to the battery.
During microprocessor supervised mode, the GS64 takes a current-limited voltage source at the CHG_IN pin to implement constant-current charging of a single Li-Ion cell connected to the VCC pins. CHG_IN 3.6V 3.6V 50mA 50mA CHARGE FET C1 D1 + VCC MAX CURRENT DETECTION - V REF1 SINGLE CELL Li-ION + VOLTAGE SOURCE BATTERY BATTERY CHARGER CHARGER CONTROL CONTROL TIMER TIMER TO uPC SUI SUI - V REF2 ADC ADIN1 Figure 5.8-1 Typical application for pulse charging a battery 5.8.
A charge request is initiated when an external voltage source is applied to the CHG_IN pin. However, before this request is passed to the microprocessor, CHG_IN is verified to be greater than VCC by 150 mV, and at least 3.7 V. If the latter criteria is not met, the module limits charging to the conditioning phase. If the former criteria is not met, the charge request is ignored and all charging is disabled. If the CHG_IN voltage exceeds the upper limit of 6.
5.8.3 Battery Selection Whilst there are several rechargeable battery technologies commercially available, including Nickel Cadmium (NiCd), Nickel Metal Hydride (Ni-MH), Lithium-Polymer (LiPolymer) and Lithium-Ion (Li-Ion), the only technology recommended and supported for use with the GR64 is Li-Ion. Li-Ion provides a good combination of high energy (3.7v) and long cycle life, which lead to low overall energy cost.
small form-factor (typically handset-sized) Li-Ion battery capacity varies considerably, some batteries are rated as high as 3200mAh (600mAh to 1800mAH are more commonly available) weight is generally not a problem with typical GS64 user application, even so small form-factor Li-Ion batteries (up to 1800mAh) can vary between 10 to 40 grams size is generally a factor of capacity, since larger capacity batteries naturally have more material/cells, and will range between 2750mm3 to 18000mm3 for small
Example 2 – Call time: An 1800mAh rated Li-Ion battery fully charged, transmitting maximum power on a low-band (850/900MHz) channel may consume an average 320mA, therefore the module would typically provide 1800*0.95/320 = 5 hours 20 mins call time Example 3 – Typical Operation: A module performing periodic network data transfers and communicating intervallic status information to its host would spend its non-active periods in sleep mode.
5.9 Powering the Module ON and OFF (PON_L, PON_H) Pin Name Direction Function 21 PON_H Input Device On/Off control 33 PON_L Input Device On/Off control The GS64 offers two hardware methods to power up and down the module. The PON_L signal utilizes a momentary switching mechanism to alternate between power-on and power-off sequences. PON_L is held high to VCC by an internal pullup resistor.
5.9.2 Module On & Off Sequence Figure 5.9-1 shows typical powering-on and powering-off sequences, using the two optional hardware interfaces. Figure 5.
5.9.2.1 Power On Timing Figure 5.9-2 Power On timing using PON_L as an example The GS64 power On sequence is shown above using PON_L as an example. The significant signals are VCC, P_ON and VREF, shown by solid lines. The other signals (in dashed lines) are internal to the module and are shown for reference purposes only. Initially, power is supplied to the VCC pins. The presence of power raises the PON_L through a pull-up resistor to VCC potential.
The PON_H signal has a similar effect at the point of assertion. The power-on timing sequence is the same, provided PON_H remains high. PON_H has to remain high in order for the module to function. 5.9.3 Turning the Module Off Figure 5.9-3 Power Down timing The GS64 power down sequence is shown above. The significant signals are VCC, PON_L and VREF, shown by solid lines. The other signals (in dashed lines) are internal to the module and are shown for reference purposes only.
The RTC can continue to operate even though VCC is removed, provided that a sufficiently charged backup device is connected to the VRTC. Refer to section 5.21.1 for details. NOTE The relevant characteristics of the ON/OFF Power control interface are shown in the table below. Parameter Conditions PON_L Input current PON_H LZT 123 1836 Input low=0V, VCC=3.6V Min Typ Max Unit -60 -25 -12 µA Input high =VCC, VCC=3.6V 0 1 µA Input low=0V, VCC=3.6V -1 0 µA Input high =VCC, VCC=3.
5.
5.10.1 Auxiliary Audio To Mobile Station (AUXIP, AUXIN) AUXI is a differential auxiliary analogue audio input to the wireless modem. Internally, the signal is routed to the CODEC (COder/DECoder), where it is converted to digital audio and mapped to an internal bus. All sources must be AC-coupled to avoid attenuation of low frequencies. Use a capacitor greater than the value shown in the table below. The AUXI input is a passive network followed by the transmit part of the CODEC.
5.10.3 Microphone Signals (MICIP, MICIN) MICP and MICN are balanced differential microphone input pins. These inputs are compatible with an electret microphone. The microphone contains a FET buffer with an open drain output, which is supplied with at 2.4V ±10% relative to ground by the wireless modem as shown below. Figure 5.10-1 Microphone connections to the wireless modem The input low-noise amplifier stage is constructed out of standard low-noise op amps. External resistors set the gain of this stage.
5.10.4 Speaker Signals (EARP, EARN) EARP and EARN are the speaker output signals. These are differential-mode outputs. With a full-scale PCM input to the CODEC, 0 dB audio output gain setting, and a differential load RL = 30Ω, the output voltage between EARP and EARN is 1.5 V rms. For load resistances less than 30Ω, the full-scale output needs is limited using the modules internal programmable gain attenuator. The electrical characteristics are given in the table below.
PCMCLK (bit clock) and PCMSYNC (frame synchronization) are both generated by the DSP within the wireless modem. The DSP within the wireless modem in this instance is the master for all external PCM, so clocks and data from external devices must be synchronized to it. For standard GSM voice a 13-Bit PCM data word is embedded in a 16-bit word frame, as shown in Figure 5.11-1 below. sample LSB justified MSB LSB D15 D0 13-bit sample occupies these frame bits Figure 5.
5.12 Serial Data Interfaces The serial channels consist of two UARTs and a USB port. These provide communication links to the application or accessory units. The serial channels can be used in differing configurations, depending upon the users requirements and application. In practice, both UARTs can be configured as either the control interface or the logging interface. Similarly, control and logging can be carried out simultaneously on the USB interface.
UART1 has the following features : • 32 bytes of FIFO for both receive and transmit • FIFO threshold interrupts • 1 start bit, 7 or 8 data bits, 1 optional parity bit, 1 or 2 stop bits • Programmable baud rate • Auto-configuration mode with auto-baud and auto-format operation • Hardware flow control • Software flow control. UART1 signals replicate a 9-pin RS232 (V.24) serial port. However, UART1 signal levels are not compliant with the RS232 (V.28) standard.
5.12.2.2 Serial Data To Wireless modem (DTM1) DTM1 is an input signal, used by the application to send data via UART1 to the wireless modem. 5.12.3 Control Signals (RTS1, CTS1, DTR1, DSR1, DCD1, RI) Depending upon the user application, some, all, or none of the control signals may be needed. Each of the control signals can alternatively be configured as a general purpose IO.
5.12.3.4 Data Terminal Ready (DTR1) DTR indicates that the DTE is ready to receive data. It also acts as a hardware ‘hang- up’, terminating calls when switched high. The signal is active low. Users can define the exact behavior of DTR with an the AT&D command. DTR1 is used as an optional sleep control mechanism when the module is configured appropriately. 5.12.3.5 Data Set Ready (DSR1) DSR indicates that the DCE is ready to receive data. The signal is active low.
5.12.4 UART2 (DTM2, DFM2) Pin Name Direction Function 61 RTS2 Input 62 CTS2 Output 63 DTM2 Input Data To Module from host (UART2) 64 DFM2 Output Data From Module to host (UART2) Request To Send (UART2) Clear To Send (UART2) UART 2 consists of a full duplex serial communication port with transmission, reception lines and hardware flow control.
5.12.5 USB Pin Name Direction 35 USBDP In/Out USB data positive 36 USBDN In/Out USB data negative 34 VUSB Input Function USB DC power The USB interface is compliant with the USB2.0 standard for a full speed (12Mbps) endpoint device. Together with VUSB (the USB transceiver DC power) and GND it creates a standard USB 4-pin interface. VUSB (VBUS in the USB standard) is nominally 5.0V.
5.12.6 SIM Card Interface Pin Name Direction Function 14 SIMVCC Output 1.8V or 3.0V SIM card supply 15 SIMRST Output SIM card reset signal 16 SIMCLK Output SIM card clock signal 17 SIMDAT In/Out SIM card data 18 SIMDET Input SIM presence detection This interface allows the user to communicate with the smart (SIM) card in the user application. The GS64 offers alternative arrangements for accessing the SIM depending on which variant of the GS64 is used.
Signal SIMCLK SIMRST Parameter High level output voltage (VOH) Low level output voltage (VOL) Mode Min Typ Max Unit 1.8V 0.9xSIMVCC V 3.0V 0.9xSIMVCC V 1.8V 0.4 V 3.0V 0.4 V 5.12.7 SIM Detection (SIMDET) SIMDET is used to determine whether a SIM card has been inserted into or removed from the SIM card holder. You should normally wire it to the ‘card inserted switch’ of the SIM card holder, but different implementations are possible.
5.
• MMCCLK: One bit is transferred on both command and data lines with each clock cycle. The clock frequency varies between 0 MHz and 20 MHz for a multimedia card. • MMCCMD: Bidirectional command channel that initializes a card and transfers commands. CMD has two operational modes; open-drain for initialization and push-pull for command transfer.
5.15 Service/Programming Pin 20 Name SERVICE Direction Input Function Flash programming enable signal The SERVICE interface is a standard IO, configured internally as an Input. This input is activated in order to enable flash memory programming. The SERVICE interface is normally pulled HIGH and is made active by the host application pulling it LOW. There are two methods for updating the firmware in the GR64: Sony Ericsson Emma III and Updater.
The LED drivers require no supporting components, eliminating the need for currentlimiting resistors. The LED outputs should be programmed to values consistent with their rated values. If desired, both LED outputs can be ganged together to provide a maximum single LED driver sink capability of 250mA. Figure 5.
5.17 General Purpose IO All general purpose IO (GPIO) is programmable by the user. Some GPIO signals are dedicated, other GPIO can be configured as an alternative to other signal functionality if it is not required by the user. GPIO which has alternate functionality is effectively multiplexed, so that the user chooses through AT commands the appropriate configuration for their application.
91 GPIO27 KEYCOL4 Keyboard row 4 Regular (dedicated) IO and alternate function IO have exactly the same characteristics and can be programmed in the same way. The use of alternate function IO is subject to some degree of limitation: Signals which are assigned SD/MMC functionality are controlled by a single register bit so that all nine signals are allocated to either memory card or GPIO; it not possible individually allocate function.
The wireless modem checks the state of the IO when the user requests a new function. The new function is rejected if the current function is not released first. The states of GPIOn to GPIOm are retained for the next power up. For example, inputs remain as inputs and outputs remain as outputs. The voltage of a defined output pin will still drop to 0 Volts in the wireless modem power down state.
5.
The module has a single precision 10-bit ADC, shared by a number of functions within the module and also through the external interface connections. The ADC sharing arrangement is shown below. Figure 5.19-1 ADC sharing arrangement ADC sampling frequency and sampling source selection can be set up and controlled with AT-commands by the user. ADC samples requires up to 5 clock (ADCLK) cycles to process. The ADC also performs some system-level sampling.
5.20 Burst Transmission (TX_ON) Pin Name Direction 39 TX_ON Output Function Transmit indication Burst transmission is the period during which the GSM transceiver is transmitting RF signals. TX_ON is an indicator that the module is transmitting. A typical application may use TX_ON to blank adjacent receiver circuitry as a means of protecting sensitive input stages. 5.21 Real Time Clock The real-time clock (RTC) is driven by a 32.768 kHz clock from an internal crystal oscillator.
5.21.1 Real Time Clock Backup Supply (VRTC) Pin Name Direction 31 VRTC Input Function DC supply for real time clock VRTC provides an input connection to the module which allows the user to power the real time clock (RTC) within the GS64 by way of a coin cell or charged capacitor. When the module is powered, an internal LDO regulator provides a 200µA source designed to supply the microprocessor’s RTC block.
Figure 5.21-1 VRTC connection 5.21.2 RTC Alarm (ALARM) Pin Name 32 ALARM Direction Output Function RTC Alarm The Alarm output is logic output from the module which is supplied from the RTC circuitry block. This block is in turn supplied either from the main supply of the module or from a backup battery if the main supply is not available. 5.21.2.1 ALARM Output from the Module The ALARM time is set by the use of an AT-command.
Figure 5.21-2 Typical host-side circuit for ALARM output VRTC is specified to work down to 1.1V across the environmental operating conditions of the GS64. Integrators may discover in controlled environments that the VRTC interface will function reliably as low as 0.8V, so best practice would be to design the circuitry to operate down to 0.7V. 5.21.
5.22 Ringer Output (BUZZER) [to be implemented in a future release] Pin Name 52 BUZZER Direction Output Function Buzzer output Connecting the BUZZER signal to an inverting transistor-buffer followed by a piezoelectric transducer enables the wireless modem to play pre-programmed melodies or sounds.
6 Antenna Connector The wireless modem’s antenna connector allows transmission of the radio frequency (RF) signals from the wireless modem to an external customer supplied antenna. The connector is a micro-miniature coaxial WFL surface mounted component. Suitable WFL type mating plug are available from the following manufacturers; Hirose The nominal impedance of the antenna interface is 50 ohms.
7 Hints for Integrating the Wireless Modem This chapter gives you advice and helpful hints on how to integrate the wireless modem into your application from a hardware perspective. Please read and consider the information under the following headings before starting your integration work: • Safety advice and precautions. • Installation of the wireless modem. • Antenna. 7.1 Safety Advice and Precautions 7.1.1 General Always ensure that use of the wireless modem is permitted.
Do not connect any incompatible component or product to the module. Sony Ericsson does not warrant against defects, malfunction, nonconformities or deviation caused by the connection of incompatible components or products to the GS64. NOTE The connection/disconnection method for the development board is by means of the DC power jack. For this reason, the mains supply should be situated close to the development board and be easily accessible. 7.
Like any mobile station, the antenna of the wireless modem emits radio frequency energy. To avoid EMI (electromagnetic interference), users must determine whether the application itself, or equipment in the application’s proximity, requires further protection against radio emission and the disturbances it might cause. Protection is secured either by shielding the surrounding electronics or by moving the antenna away from the electronics and the external signals cable.
7.4.1.2 Signal Strength The wireless modem has to be placed in a way that ensures sufficient signal strength. To improve signal strength, the antenna can be moved to another position. Signal strength may depend on how close the wireless modem is to a radio base station. You must ensure that the location at which you intend to use the wireless modem, is within the network coverage area.
Users should consider the choice of the supplementary services described in section 2.3.2Short Message Service, page 16. 7.4.2 How to Install the Wireless modem 7.4.2.1 Power Supply Use a high-quality power supply cable with low resistance. This ensures that the voltages at the connector pins are within the allowed range, even during the maximum peak current.
7.4.2.4 Software Upgrade There are two ways of updating the firmware in the GS64. There is a web based tool that can access a Sony Ericsson server from where SW can be downloaded. There is also an Updater, which is a local application that downloads an image provided by SEMC. 7.5 Antenna 7.5.1 General The antenna is the component in the users system that maintains the radio link between the network and the wireless modem.
The antenna must be designed for the frequency bands deployed in the regions that the wireless modem is being used. For fixed locations this may be dual bands (for example E-GSM900/GSM1800 in Europe; GSM850/GSM1900 in North America). For applications which are mobile, users should consider whether three or all four GSM bands could be encountered.
Minimize the use of extension cables, connectors and adapters. Each additional cable, connector or adapter will result in additional loss of signal power. 7.5.5 Possible Communication Disturbances Communication disturbances can adversely effect the quality of wireless links, including the following causes: Noise can be caused by electronic devices and radio transmitters. Path-loss occurs as the strength of the received signal steadily decreases in proportion to the distance from the transmitter.
8 Embedded Applications The wireless modem has the capability to store and run customer written code in the form of a script during the processor’s idle time, through the use of an on board interpreter. 8.1 Features Main features of embedded applications are as follows: C based scripting language (Sony Ericsson specific) Over the air upgrade of scripts (NOT GSM software) Library of intrinsic functions 2 scripts can be stored in the memory at any time (but only 1 can be active) 8.
A direct comparison cannot be made to a fully compiled C program in terms of size, but a gauge of script size is that if each line were 128 characters long in the script then the script could be about 16,000 lines long. Processing power is something that needs to be considered as the script is run as a low priority process within the software. However, controller mode stops GSM operation and provides all the processing power for the script to be run. See the M2mpower Application Guide for more details.
9 TCP/IP Stack An on board IP/TCP/UDP stack has been integrated into the software negating the need for the customer to implement one in their own code base. This is accessible by using an embedded applications (see section 9) using intrinsic functions or through AT commands. 9.1 Implementation The following types of commands allow various functions: Open/closing IP connection - Negotiates/closes a dynamic IP address with the web server.
10 Technical Data 10.1 Mechanical Specifications Refer to Figure 4.2-1 Dimensions of the Wireless modem for reference to mechanical features. Mechanical Feature Variant Value Length 37 mm Width 30 mm Thickness (see illustration below) without SIM holder 2.67 mm with SIM holder 5.27 mm Weight Figure 10.
10.2 Power supply voltage, normal operation Parameter Mode Limit VCC Supply voltage Nominal 3.6 V Min 3.2 V Max 4.5 V Absolute maximum limit Maximum supply ripple Maximum allowable voltage drop Transmission burst Maximum current consumed Full power (2W) transmit ! WARNING -0.3V to 6.5V <100mV @<200kHz <20mV @>200kHz 200mV 2250 mA (peak) 2100 mA (avg) Stresses in excess of the absolute maximum limits can cause permanent damage to the device. These are absolute stress ratings only.
10.
Test Case Test Summary Ref Standard Freq: 10-60 Hz, constant displacement ≡±0.35mm Freq : 60-500 Hz, constant Sinusoidal Vibration acceleration ≡ 5 g Sweep velocity: 1 oct/min IEC 60068-2-6 Sweeps: 5 per axis Axis: 3 axis (x, y, z) per device Power Spectral Density: 5 Hz 12 Hz Random Vibration 20 Hz 0.10 m2/s3 2.20 m2/s3 2.20 m2/s3 200 Hz 0.04 m2/s3 IEC 60068-2-34 500 Hz 0.
11 Regulatory Notices The GS64 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. This device complies with Part 15 of the FCC rules.
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12 Introduction to the Universal Developer’s Kit The Sony Ericsson M2M universal developer’s kit (UDK) is designed to get you started quickly. It contains all the hardware you will need to begin the development of an application. The only items you need to provide are; a wireless modem, a computer, a SIM card with a network subscription, and a knowledge of programming with AT commands.
