Specifications

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ModemModule GSM/GPRS

Embedded Data/Fax/Voice Wireless Modem

MTMMC-G-F1

MTMMC-G-F2

Developer’s Guide

Summary of content (52 pages)

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ModemModule GSM/GPRS Embedded Data/Fax/Voice Wireless Modem MTMMC-G-F1 MTMMC-G-F2 Developer’s Guide
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ModemModule GSM/GPRS Developer’s Guide MTMMC-G-F1 and MTMMC-G-F2 PN S000295E, Version E 03/30/04 Copyright This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc. All rights reserved. Copyright © 2004, by Multi-Tech Systems, Inc. Multi-Tech Systems, Inc.
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Table of Contents CHAPTER 1 – PRODUCT DESCRIPTION AND SPECIFICATIONS ................................................................5 INTRODUCTION ...........................................................................................................................................................5 Scope of the Developer Guide ................................................................................................................................5 AT Command Info ................................
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CHAPTER 6 – APPLICATION CONSIDERATIONS..........................................................................................37 GENERAL GUIDELINES FOR THE USE OF THE MODEMMODULE .................................................................................37 Hardware and RF.................................................................................................................................................37 The Antenna.........................................................................
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Chapter 1 – Product Description and Specifications Chapter 1 – Product Description and Specifications Introduction ModemModule GSM/GPRS integrated wireless modems provide a quick and easy way to insert GSM and GPRS functionality into systems and terminals. Available in dual-band configurations, this modem constitutes a selfcontained, fully integrated implementation of the GSM/GPRS standard. Thanks to standard interfaces, it can be integrated into any system. It is ready for voice, SMS, data and fax.
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Chapter 1 – Product Description and Specifications General Characteristics General • • • • • • • • • • • • • • • • • • • • • GPRS Class 10 Dual Band GSM/GPRS modem E-GSM 900/1800 or GSM 850/1900 2W at 850MHz 1W at 1800/1900 MHz GSM Class 1 and Class 2 Group 3 FAX Small size and low power consumption Voice and Short Message Services (SMS) Fax and data transmission without extra hardware Serial interface supports DTE speeds up to 115.2K MMCX connector and SIM socket 14.
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Chapter 1 – Product Description and Specifications GSM Circuit Data Features • • • • • Data circuit asynchronous, transparent and non transparent up to 14,400 bits/s Automatic fax group 3 (Class 1 & 2) Alternate speech and fax MNP2, V.
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Chapter 1 – Product Description and Specifications Feature Descriptions Integration Reduces Space, Power and Cost. The ModemModule GSM/GPRS integrates the controller, RF transceiver, and antenna interface in one compact unit. This integration requires low power, occupies very little space, and provides an overall reduction in costs. Reduces Development Time.
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Chapter 1 – Product Description and Specifications Applications With circuit switched data rates up to 14.4K bps, the MultiModem GSM/GPRS is targeted at applications that periodically need to send or receive data over a wireless network. It is an ideal device for: Appliances Remote Diagnostics ATM Terminals Remote Metering Automotive Security Systems Data Collection Vending/Gaming Machines Gas Pumps Other devices requiring wireless connectivity.
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Chapter 1 – Product Description and Specifications Mechanical Design Overview The ModemModule is encased as shown in the figure below. It includes an RF module, a 50-pin connector, a SIM holder and an RF connector. Interface Connector Figure 1-2: Mechanical Description A Holes for Mounting Screws (4) Hole dia. = 0.087” Antenna Connector (MMCX type) SIM ejection button SIM Reader Figure 1-3: Mechanical Description B Four screw holes allow the ModemModule to be fixed on the mother PCB.
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Chapter 2 – Mechanical Specifications Chapter 2 – Mechanical Specifications Mechanical Dimensions Figure 2-1: ModemModule Dimensions Wireless ModemModule GSM/GPRS Developer’s Guide 11
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Chapter 2 – Mechanical Specifications Climatic and Mechanical Environment Testing Compliance Table 2-1: Climatic and Mechanical Environment Testing Compliance G900/G1800 Environmental Type of Test Standards Storage Class 1.2 Cold IEC 68-2.1 Ab test -25 C; 72 hours -40 C; 72 hours -20 C (GSM); 16 hours -10O C (DCS) 16 hours Dry Heat IEC 68-2.2 Bb test +70O C; 72 hours +70O C; 72 hours +55O C; 16 hours Change of Temperature IEC 68-2.
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Chapter 3 – Electrical Characteristics Chapter 3 – Electrical Characteristics Introduction This chapter describes the electrical interface of the MultiModem.
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Chapter 3 – Electrical Characteristics 50-Pin Connector Interfaces 50-Pin Connector Description Table 3-1.
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Chapter 3 – Electrical Characteristics Table 3-1.
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Chapter 3 – Electrical Characteristics Table 3-2. Operating Conditions Parameter I/O Type Min Max Vinput low CMOS -0.5V 0.8V Vinput high CMOS 2.1V 3.0V Voutput low 1X 0.2V IOL = -1mA 2X 0.2V IOL = -2mA 3X 0.2V IOL = -3mA Voutput high Condition 1X 2.6V IOH = 1mA 2X 2.6V IOH = 2mA 3X 2.
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Chapter 3 – Electrical Characteristics 50 49 2 1 Figure 3-2: Pin Numbering – Bottom View Power Supply The main power supply is provided through a double connection. These connections are respectively pins 3 and 4 for the +5V and the pins 1 and 2 for the ground (GND). The pins 6, 21, and 24 are also ground connection in order to produce a proper ground plane. A 5V +/-5% - 1.3A power is strictly required to supply the modem. However, the modem does not have to constantly deliver 1.
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Chapter 3 – Electrical Characteristics Table 3-5: Power Consumption in GSM1800 & 1900 MHz @25 degrees C Conditions INOM IMAX +5V During TX bursts @1W 1.1 A 1.2 A +5V Average @1W 210 mA 235 mA +5V Average @ 0.25W 165 mA 185 mA +5V Average idle mode 15 mA 25 mA Table 3-6: Power Consumption in EGSM/GPRS 900 MHz and GSM/GRPS 850 MHz Mode Class 10 Conditions INOM IMAX +5V During TX bursts @ 2W 1.2 A 1.3 A +5V Average @ 2W 420 mA 470 mA +5V Average @ 0.
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Chapter 3 – Electrical Characteristics Serial Link A serial link interface is available complying with V24 protocol signaling but not with V28 (electrical interface) due to a 2.8 Volts interface. TX, RTS and DTR can be either 5V or 3V. Data signals are Hi = Mark. Controls signals are Hi = Off.
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Chapter 3 – Electrical Characteristics Level Shifter Modem 28 Vcc C1+ 27 25 C11 C2+ 3 Vcc RI 2 26 4 C2- 24 T1IN T1OUT DCD 23 T2IN T2OUT RX 22 T3IN T3OUT CTS 19 DSR 17 16 DTR 21 TX 20 RTS 18 Vcc 13 Terminal T4IN T4OUT T5IN T5OUT R1OUTB R1IN R2IN R2OUT R3IN R3OUT R4OUT ERROR OFF ON GND Vcc GND 5 S_RI 6 S_DCD 7 S_RX 10 S_CTS 12 S_DSR 8 S_DTR 9 S_TX 11 S_RTS 15 14 Vcc MAX 3238 *This application note is valid for Vcc> 3.
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Chapter 3 – Electrical Characteristics Power OFF Procedure In order to power OFF the ModemModule, switch it OFF both via software (AT+CPOF; see AT Command Manual for more details) and via hardware line. See the diagrams below.
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Chapter 3 – Electrical Characteristics BOOT This input is used to switch the ModemModule into download mode (backup procedure). The internal boot procedure is started when this pin is low during the power ON of the module. In normal mode, this pin has to be left open. If used, this input has to be driven by an open collector or an open drain. See below an example of application diagram. See also the “Firmware Upgrade” section of Chapter 5: Application Considerations.
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Chapter 3 – Electrical Characteristics Table 3-11: Reset Signal Pin Description Signal Pin Number I/O ~RST 19 I/O I/O Type* Description Module reset * See “Table 3-2: Operating Conditions” in section on the 50-pin Connector Description. Table 3-12: Reset Signal Electrical Characteristics Parameter Min Input Impedance ( R ) 4.7 Max Unit kilo-ohms Input Impedance ( C ) 10 nanofarads Table 3-13: Reset Signal Operating Conditions Parameter Min Max *VT- 1.1 V 1.2 V *VT+ 1.7 V 1.
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Chapter 3 – Electrical Characteristics General Purpose Input/Output The ModemModule provides two General Purpose I/O connections. They can be used to control any external device. Table 3-16: General Purpose I/O Pin Description Signal Pin Number I/O I/O Type* Description Default Value GPIO0 26 I/O CMOS / 2X General Purpose I/O 0 GPIO4 7 I/O CMOS / 2X General Purpose I/O 0 * See “Table 3-2: Operating Conditions” in section on the 50-pin Connector Description.
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Chapter 3 – Electrical Characteristics Audio Interface Two different microphone inputs and two different speaker outputs are supported. The connection can be either differential or single-ended but using a differential connection in order to reject common mode noise and TDMA noise is recommended. Microphone 2 Inputs The MIC2 inputs are differential ones. They already include the convenient biasing for an electret microphone (0,5 mA and 2 Volts).
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Chapter 3 – Electrical Characteristics Microphone 1 Inputs The MIC1 inputs are differential and do not include internal bias. To use these inputs with an electret microphone, bias has to be generated outside the ModemModule according to the characteristic of this electret microphone. These inputs are the standard ones used for an external headset or a hands-free kit.
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Chapter 3 – Electrical Characteristics Speaker 2 Outputs Speaker outputs SPK2 are push-pull amplifiers and can be loaded down to 50 Ohms and up to 1nF. These outputs are differential and the output power can be adjusted by step of 2dB. The output can be directly connected to a speaker. When using a single-ended connection, be sure to have a very good ground plane, a very good filtering as well as shielding in order to avoid any disturbance on the audio path.
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Chapter 3 – Electrical Characteristics Speaker 1 Outputs Speaker outputs SPK1 are push-pull amplifiers and can be loaded down to 50 Ohms and up to 1nF. These outputs are differential and the output power can be adjusted by step of 2dB. The output can be directly connected to a speaker. When using a single-ended connection, be sure to have a very good ground plane, a very good filtering as well as a shielding in order to avoid any disturbance on the audio path.
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Chapter 3 – Electrical Characteristics SIM interface The external SIM interface is available through the 50-pin connector in order to use a stand-alone SIM cardholder. 5V SIMs can be driven using an external level shifter. SIM line must not exceed 15 cm. See also the “Hardware and RF” section of Chapter 5: Application Considerations. Five signals are available: SIMVCC: SIM power supply. SIMRST: reset. SIMCLK: clock. SIMDATA: I/O port. SIMPRES1 SIM card detect.
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Chapter 3 – Electrical Characteristics SIM Schematic (5V) SIM interface from Modem Module. R20, R21, R22 and R23 are used to shunt LTC1555. SIMDA TA R20 SIMRST R21 0 R12 100K R22 0 R14 100K SIMCLK 2 C_GPO0 3 47K 47K 1 10K GND GND GND U4 4.7K 4 0 5 UMC5NT1 VCC = 2.8V GND SIMV CC V CC GND R13 100K 1 2 3 4 5 6 7 8 U6 CIN RIN DA TA DDRV DV CC SS M1 M0 CLK RST I/O V CC V IN C1+ C1GND LTC1555 R23 0 16 15 14 13 12 11 10 9 C28 .1uF GND R15 1K C43 2.
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Chapter 3 – Electrical Characteristics Table 3-24: SIM Interface Electrical Characteristics Parameter Conditions Min Typ SIMDATA VIH IIH = +/- 20µA 0.7xSIMVCC SIMDATA VIL IIL = 1 mA SIMRST, SIMDATA SIMCLK VOH Source current = 20µA SIMRST, SIMDATA SIMCLK VOL Sink current = -200µA SIMVCC Output Voltage ISIMVCC <= 6mA SIMCLK Rise/Fall Time Max Unit V 0.3xSIMVCC SIMVCC – 0.1V V V 0.1 2.70 2.80 2.
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Chapter 3 – Electrical Characteristics GND SIMVCC 1 VCC SIMRST 2 RST SIMCLK 3 CLK CC4 GND VPP IK SIMDATA 7 I/O SIMPRES1 8 CC8 Figure 3-12: SIM Socket SPI Bus The SPI bus includes a CLK signal, an I/O signal and an EN signal complying with SPI bus standard. The maximum speed transfer is 3.25Mb/s.
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Chapter 4 – Interfaces Chapter 4 – Interfaces This chapter describes the ModemModule interfaces. • Flashing LED • SIM Interface • RF Interface • DTE/DCE Interface Rates Flashing LED The flashing LED signal is used to indicate the working mode of the ModemModule.
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Chapter 4 – Interfaces RF Interface The impedance is 50 Ohms nominal. RF Connector The RF connector is MMCX standard type. An antenna can be directly connected through the mating connector or using a small adapter. RF Performances RF performances are compliant with the ETSI recommendation 05.05 and 11.10.
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Chapter 5 – Test Board Chapter 5 – Test Board Serial Test/Demo Board Components Figure 5-1: Serial Test/Demo Board Components Wireless ModemModule GSM/GPRS Developer’s Guide 35
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Chapter 5 – Test Board Serial Test/Demo Board Block Diagram Figure 5-2: Block Diagram for the ModemModule GSM/GPRS Developer Board Wireless ModemModule GSM/GPRS Developer’s Guide 36
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Chapter 6 – Application Considerations Chapter 6 – Application Considerations General Guidelines for the Use of the ModemModule Hardware and RF • • • • • • Ground plane: MultiTech recommends having a common ground plane for analog, digital and RF grounds. Length of the SIM interface lines (15 cm maximum) Bias of the Microphone inputs must be properly adjusted when using audio connectors (mic + speaker) 1.
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Chapter 6 – Application Considerations Getting Started Minimum Hardware Interface Required To Get Started At a minimum, it is necessary to connect the following signals to properly operate the ModemModule: Table 5-1: Minimum Signals to Operate the ModemModule Pin Number Name Description 1 GND Ground 2 GND Ground 3 +5V Power Supply 4 +5V Power Supply 6 GND Ground 13 CT106/CTS Clear to Send 15 ON/OFF Power On/Off * 21 GND Ground 24 GND Ground 25 CT103/TX Transmit 28 CT104/
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Chapter 6 – Application Considerations Reference Documents Table 5-2: GSM ETSI Recommendations for Phase I and Phase II Specification Reference Title GSM ph2 Radio ETSI GSM 05.05 and GT 01 v4.2.1 DCS ph2 Radio ETSI GSM05.05 and GT01 v4.2.1 GSM ph2 Link-Management ETSI GSM 03.06, 04.08, 05.05, 05.08, 05.10, 07.01 an GT 01 v4.2.1 GSM ph2 Link-Management ETSI GSM 03.06, 04.08, 05.05, 05.08, 05.10, 07.01 an GT 01 v4.2.1 GSM ph2 Layer 2 ETSI GSM 04.06 and GT 01 v4.2.1 GSM ph2 Layer 3 ETSI GSM 04.
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Chapter 6 – Application Considerations Additional Information European Telecommunications Standards Institute (ETSI) - Contact the ETSI at: 650, route des Lucioles 06921 Sophia-Antipolis Cedex France Tel: +33 (0)4 92 94 42 00 Fax: +33 (0)4 93 65 47 16 Global Engineering Documents manages a collection of more than one million documents from over 460 organizations worldwide: http://global.ihs.
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Appendix A – Safety Appendix A – Safety Safety Precautions IMPORTANT! FOR THE EFFICIENT AND SAFE OPERATION OF YOUR GSM/GPRS INTEGRATED MODEM READ THIS INFORMATION BEFORE USE. RF Safety General Your ModemModule is based on the GSM/GPRS standard for cellular technology. The GSM/GPRS standard is spread all over the world. It covers Europe, Asia and some parts of America and Africa. This is the most used telecommunication standard. Your modem is actually a low power radio transmitter and receiver.
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Appendix A – Safety General Safety Driving Check the laws and the regulations regarding the use of cellular devices in the area where you have to drive as you always have to comply with them. When using your modem while driving, please: give full attention to driving, pull off the road and park before making or answering a call if driving conditions so require. Electronic Devices Most electronic equipment, for example in hospitals and motor vehicles is shielded from RF energy.
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Appendix A – Safety RF Exposures Pursuant to 47 CFR § 24.52 of the FCC Rules and Regulations, personal communications services (PCS) equipment is subject to the radio frequency radiation exposure requirements specified in § 1.1307(b), § 2.1091 and § 2.1093 as appropriate. The MultiTech ModemModule is a GSM (Cellular 850/ PCS 1900) terminal which operates in the US licensed PCS frequency spectrum.
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Appendix B – Sourcing Connectors & Peripheral Devices Appendix B – Sourcing Connectors & Peripheral Devices Where to Find SMD Connectors The ModemModule matting interface connector is made by SAMTEC France (http://www.samtec.com/). Many SAMTEC products are available via SAMTEC dealers throughout the world.
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Appendix B – Sourcing Connectors & Peripheral Devices GSM/GPRS Antenna The integrated modem antenna connector is an MMCX connector. The MMCX connector incorporates a 'Snap On' latching action in order to make the connection easier. It has excellent RF performance. An additional advantage is its small physical size--50% of the standard MCX connector. This type of connector is suitable for the standard ranges of flexible and semi-rigid cables.
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Appendix C – Warranty and Service Appendix C – Warranty and Service Multi-Tech Warranty Statement Multi-Tech Systems, Inc., (hereafter “MTS”) warrants that its products will be free from defects in material or workmanship for a period of two, five, or ten years (depending on model) from date of purchase, or if proof of purchase is not provided, two, five, or ten years (depending on model) from date of shipment.
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Appendix C – Warranty and Service Repair Procedures for International Customers (Outside U.S.A. and Canada) Your original point of purchase Reseller may offer the quickest and most economical repair option for your Multi-Tech product. You may also contact any Multi-Tech sales office for information about the nearest distributor or other repair service for your Multi-Tech product. The Multi-Tech sales office directory is available at www.multitech.
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Appendix D – Acronyms and Abbreviations Appendix D – Acronyms and Abbreviations ADC : ASIC : BCCH : CE : CLK : CTS : dB : DCD : DCE : DSR : DTE : DTR : EFR : E-GSM : EMC : EN : ETSI : FAC : FR : FTA : GND : GPIO : GPRS : GSM : HR : IMEI : MO : MT : OEM : PDA : PCB : PRES : RI : RTS : SIM : SMD : SMS : TAC : TDMA : TE : VSWR : WAP : Analog Digital Converter Application Specific Integrated Circuit Broadcast Control Channel Communauté Européenne Clock Clear To send Decibel Data Carrier Detect Data Circuit Te
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Index Index 1 1X ....................................................14, 15, 16, 19, 32 2 2X ........................................ 14, 15, 16, 19, 23, 24, 29 3 3X ......................................................................15, 16 A advice of charge.........................................................8 Advice of Charge.......................................................7 analog ............................................................7, 37, 48 antenna...............................
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Index MO.............................................................6, 8, 42, 48 modem ............... 5, 6, 7, 17, 20, 32, 39, 41, 42, 43, 45 module .................................................5, 8, 10, 14, 22 mounting....................................................................6 MT ...................................................................6, 8, 48 multiparty ..................................................................8 N nominal value ...........................................
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Index LIST OF FIGURES FIGURE 1-1: MULTITECH’S WIRELESS MODEMMODULE GSM/GPRS...........................................................................5 FIGURE 1-2: MECHANICAL DESCRIPTION A .................................................................................................................10 FIGURE 1-3: MECHANICAL DESCRIPTION B..................................................................................................................10 FIGURE 2-1: MODEMMODULE DIMENSIONS ..................
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Index LIST OF TABLES TABLE 2-1: CLIMATIC AND MECHANICAL ENVIRONMENT TESTING COMPLIANCE .......................................................12 TABLE 3-1. 50-PIN CONNECTOR DESCRIPTION ............................................................................................................14 TABLE 3-1. 50-PIN CONNECTOR DESCRIPTION (CONTINUED) .....................................................................................15 TABLE 3-2. OPERATING CONDITIONS ...........................................