FCC ID: QIX-051-1-1 Transmitter Module for mobile applications

Description Embedded GSM/GPSModule A2DJP 2001 The information in this document is copyrighted for Falcom Wireless Communications GmbH. Any reproduction of this User Manual in whole or in part, electronic storage or translation in other languages are permitted only with the prior written consent of Fal-

com Wireless Communications GmbH. All details of FALCOMs products, particularly those in catalogues, in printed or other form, contain diagrams and details of products and performances which are not gua-

ranteed features, but approximations. In respect of these, only the agreements in the contract of supply are valid. All rights reserved. Description Contents Contents 1 1.1 1.2 1.3 1.4 2 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 3 4 Introduction. 2 General . 2 Used abbreviations . 4 Related documents . 5 Alert symbols used . 5 Security . 6 General information. 6 Exposure to RF energy . 6 Efficient modem operation. 7 Antenna care and replacement . 7 Driving . 8 Electronic devices . 8 Vehicle electronic equipment. 8 Medical electronic equipment . 8 Aircraft . 8 Children . 8 Blasting areas . 9 Potentially explosive atmospheres . 9 Non-ionising radiation . 9 Safety standards . 10 Technical data . 11 GSMmodem . 15 5 General . 15 5.1 5.1.1 GSM capability . 15 5.1.2 GSM data services . 15 5.1.3 RF characteristics . 15 5.1.4 SIM card reader. 16 5.1.5 RS 232 . 16 5.1.6 Possible external devices . 16 Special functionality pins . 16 5.2 5.2.1 Firmware download procedure . 19 5.2.2 Resetting the GSMmodule by AT+CFUN=1,1. 19 GSM 07.05. and 07.07. commands. 19 5.3 A2DJP Version 1.03 Side 1 Description Contents 5.3.1 General AT commands . 20 5.3.2 SMS AT commands (GSM 07.05) . 20 5.3.3 GSM AT commands (GSM 07.07). 21 GPS receiver . 22 6 General . 22 6.1 Product overview. 23 6.2 6.2.1 GPS receiver architecture . 23 6.2.2 Product applications . 24 6.3 Technical description. 24 6.3.1 General information. 24 6.3.2 Hardware interface . 25 6.3.2.1 Configuration and timing signals . 25 6.3.3 Serial communication signals . 26 6.3.4 DC input signals . 28 6.3.5 Software interface . 28 6.3.5.1 Binary data message. 29 6.3.5.2 NMEA data message. 31 7 A2D-JP evaluation board . 32 A2DJP Version 1.03 Side 2 Description List of figures List of figures Figure 1: Drawing of A2DJP . 2 Figure 2: Technical drawing of A2DJP . 3 Figure 3: Interface connections . 12 Figure 4: Interface A: 60pin connector AMP 177984-2 . 12 Figure 5: GPIO 1 Flash_LED . 17 Figure 6: Sample-application SIMPREK. 18 Figure 7: GPS receiver architecture . 23 Figure 8: The A2D-JP evaluation board . 32 A2DJP Version 1.03 Side 3 Description Versions Versions Version number Author Changes V 1.00 V 1.01 V 1.02 V 1.03 M. Menz G. Buch G. Buch G. Buch Initial version Chip set of RAM/Flash changed

(GPS) Reset chip changed (GPS) Layout of L2/R35/C2/D13/C27 changed Ground GSM-antenna changed A2DJP Version 1.03 Side 1 Description Introduction 1 Introduction 1.1 General This manual is focussed on the embedded GSM/GPS-module of the FALCOM A2D-JP series from FALCOM GmbH. It contains some information about the FALCOM GSM module and the FALCOM GPS-module based on the CONEXANT Zodiac 2000 chip set. Information furnished herein by FALCOM GmbH is believed to be accurate and reliable. However, no responsibility is assu-

med for its use. Also the information contained herein is sub-

ject to change without notice. Users are advised to proceed quickly to the Security chapter and read the hints carefully. Figure 1: Drawing of A2DJP A2DJP Version 1.03 Side 2 Description Introduction

. 5 1 0 1 0 2 5 6 6

. 2 16.35 2 . 7 x )

( 3 5 1 40 31 5 8 6

. 5 6 4

. 25.5 57.15 x a m 1 2 1

. 13.3 5 6 1

. 5 1 0 3 0 4

. 5 2 0 4 8 4

. 8 2 5 1.7 tief 53.80.15 73.20.15 90.20.3

(94.7) 4 4 Figure 2: Technical drawing of A2DJP A2DJP Version 1.03 Side 3 Description Introduction 1.2 Used abbreviations Abbreviation Meaning CTS DGPS DOP ECEF Clear To Send signal from Dent Differential GPS Dilution of Precision Earth-Centred Earth-Fixed Coordinate system EEPROM Memory for parameter ETSI GSM GPS GGA HDOP IMEI ME NMEA PIN PLMN PRN PUK RP RTC RTCM RXD European Telecommunications Standards Institute Global System for Mobile communications Global Positioning System GPS Fixed Data Horizontal DOP International Mobile station Equipment Identity Mobile Equipment National Maritime Electronics Association Personal Identification Number Public Land Mobile Network Pseudorandom Noise NumberThe Identity of GPS satellites Personal Unblocking Key Receive Protocol Real Time Clock Radio Technical Commission for Maritime Services Data input RXQUAL Received Signal Quality SIM SMS SMS/PP SRAM TA TE TP TTFF TXD Subscriber Identity Module Short Message Service Short Message Service/Point-to-Point Static Random Access Memory Terminal Adapter Terminal Equipment Transmit Protocol Time To First Fix Data output Table 1: Abbreviations A2DJP Version 1.03 Side 4 Description Introduction 1.3 Related documents

[1] ETSI GSM 07.05

[2] ETSI GSM 07.07

[3] ITU-T V.25ter

[4] Zodiac GPS receiver Family Designers' Guide

[5] GPS Chipset-Zodiac 2000

[6] Serial Data I/O Interface 1.4 Alert symbols used

"Use of Data Terminal Equipment - Data Circuit terminating Equipment interface for Short Message Service and Cell Broadcast Service"

"AT command set for GSM Mobile Equipment"

"Serial asynchronous automatic dialling and control"

http://www.falcom.de/service/downloads http://www.falcom.de/service/downloads see chapter 5 of [4]

Alerts the user to potential safety risks.

Indicates important information and tips. A2DJP Version 1.03 Side 5 Description 2 Security Security IMPORTANT FOR THE EFFICIENT AND SAFE OPERATION OF YOUR GSMMODEM, READ THIS INFORMATION BEFORE USE!

Your embedded GSM/GPSmodem is one of the most exciting and innovative electronic products ever developed. With it you can stay in contact with your office, your home, emergency services, and others, wherever service is provided. This chapter contains important information for the safe and reliable use of the GPS receiver. Please read this chapter carefully before starting to use the GPS receiver. 2.1 General information Your modem utilises the GSM standard for cellular technology. GSM is a newer radio frequency (RF) technology than the current FM technology that has been used for radio communications for deca-

des. The GSM standard has been established for use in the Euro-

pean community and elsewhere. Your modem is actually a low power radio transmitter and receiver. It sends out and receives radio frequency energy. When you use your modem, the cellular system handling your calls controls both the radio frequency and the power level of your cellular modem. The Global Positioning System uses satellite navigation, an entirely new concept in navigation. GPS has become established in many areas, for example, in civil aviation or deep-sea shipping. It is ma-

king deep inroads in vehicle manufacturing, and long before every-

one of us will use it in one way or another. The GPS system is operated by the government of the United States of America, which also has sole responsibility for the accuracy and maintenance of the system. The system is constantly being im-

proved and may entail modifications effecting the accuracy and per-

formance of the GPS equipment. 2.2 Exposure to RF energy There has been some public concern about possible health effects of using GSM modem. Although research on health effects from RF energy has focused for many years on the current RF technology, scientists have begun research regarding newer radio technologies, such as GSM. After existing research had been reviewed, and after compliance to all applicable safety standards had been tested, it has been concluded that the product is fit for use. A2DJP Version 1.03 Side 6 Description Security If you are concerned about exposure to RF energy there are things you can do to minimise exposure. Obviously, limiting the duration of your calls will reduce your exposure to RF energy. In addition, you can reduce RF exposure by operating your cellular modem efficient-

ly by following the guidelines below. 2.3 Efficient modem operation In order to operate your modem at the lowest power level, consistent with satisfactory call quality please take note of the following hints. If your modem has an extendible antenna, extend it fully. Some mo-

dels allow you to place a call with the antenna retracted. However your modem operates more efficiently with the antenna fully exten-

ded. Do not hold the antenna when the modem is IN USE. Holding the antenna affects call quality and may cause the modem to operate at a higher power level than needed. 2.4 Antenna care and replacement Do not use the modem with a damaged antenna. If a damaged an-

tenna comes into contact with the skin, a minor burn may result. Re-

place a damaged antenna immediately. Consult your manual to see if you may change the antenna yourself. If so, use only a manufac-

turer-approved antenna. Otherwise, have your antenna repaired by a qualified technician. Use only the supplied or approved antenna. Unauthorised anten-

nas, modifications or attachments could damage the modem and may contravene local RF emission regulations or invalidate type ap-

proval. Operate the GPS receiver with a connected antenna and make sure that there is no obstruction between the receiver and the satellite. Make absolutely sure that the antenna socket or antenna cable is not shorted as this would render the GPS receiver dysfunctional. Do not use the receiver with a damaged antenna. Replace a dama-

ged antenna without delay. Use only a manufacturer-approved an-

tenna. Use only the supplied or an approved antenna with your GPS receiver. Antennas from other manufacturers which are not authori-

zed by the supplier can damage the GPS receiver. Technical modi-

fications and additions may contravene local radio-frequency emis-

sion regulations or invalidate the type approval. Authorized GPS antennas:

FALCOM ANT 006 (active) A2DJP Version 1.03 Side 7 Description 2.5 Driving Security Check the laws and regulations on the use of cellular devices in the area where you drive. Always obey them. Also, when using your mo-

dem while driving, please pay full attention to driving, pull off the road and park before making or answering a call if driving conditions so require. When applications are prepared for mobile use they should fulfil road-safety instructions of the current law!

2.6 Electronic devices Most electronic equipment, for example in hospitals and motor ve-

hicles is shielded from RF energy. However RF energy may affect some malfunctioning or improperly shielded electronic equipment. 2.7 Vehicle electronic equipment Check your vehicle manufacturer's representative to determine if any on board electronic equipment is adequately shielded from RF energy. 2.8 Medical electronic equipment Consult the manufacturer of any personal medical devices (such as pacemakers, hearing aids, etc...) to determine if they are adequately shielded from external RF energy. Turn your modem OFF in health care facilities when any regulations posted in the area instruct you to do so. Hospitals or health care fa-

cilities may be using RF monitoring equipment. 2.9 Aircraft 2.10 Children Turn your modem OFF before boarding any aircraft. Use it on the ground only with crew permission. Do not use it in the air. To prevent possible interference with aircraft systems, Federal Avia-

tion Administration (FAA) regulations require you to have permissi-

on from a crew member to use your modem while the plane is on the ground. To prevent interference with cellular systems, local RF re-

gulations prohibit using your modem whilst airborne. Do not allow children to play with your modem. It is not a toy. Chil-

dren could hurt themselves or others (by poking themselves or others in the eye with the antenna, for example). Children could da-

mage the modem, or make calls that increase your modem bills. A2DJP Version 1.03 Side 8 Description Security 2.11 Blasting areas To avoid interfering with blasting operations, turn your unit OFF when in a "blasting area" or in areas posted : turn off two-way ra-

dio. Construction crew often use remote control RF devices to set off explosives. 2.12 Potentially explosive atmospheres Turn your modem OFF when in any area with a potentially explosive atmosphere. It is rare, but your modem or its accessories could ge-

nerate sparks. Sparks in such areas could cause an explosion or fire resulting in bodily injury or even death. Areas with a potentially explosive atmosphere are often, but not al-

ways, clearly marked. They include fuelling areas such as petrol sta-

tions; below decks on boats; fuel or chemical transfer or storage fa-

cilities; and areas where the air contains chemicals or particles, such as grain, dust, or metal powders. Do not transport or store flammable gas, liquid, or explosives, in the compartment of your vehicle which contains your modem or acces-

sories. Before using your modem in a vehicle powered by liquefied petrole-

um gas (such as propane or butane) ensure that the vehicle com-

plies with the relevant fire and safety regulations of the country in which the vehicle is to be used. 2.13 Non-ionising radiation As with other mobile radio transmitting equipment users are ad-

vised that for satisfactory operation and for the safety of personnel, it is recommended that no part of the human body be allowed to come too close to the antenna during operation of the equipment. The radio equipment shall be connected to the antenna via a non-

radiating 50Ohm coaxial cable. The antenna shall be mounted in such a position that no part of the human body will normally rest close to any part of the antenna. It is also recommended to use the equipment not close to medical de-

vices as for example hearing aids and pacemakers. A2DJP Version 1.03 Side 9 Description Safety standards 3 Safety standards This GSM/GPS-modem complies with all applicable RF safety standards. The embedded GMS/GPS-modem meets the safety standards for RF receivers and the standards and recommendations for the pro-

tection of public exposure to RF electromagnetic energy established by government bodies and professional organizations, such as di-

rectives of the European Community, Directorate General V in mat-

ters of radio frequency electromagnetic energy. A2DJP Version 1.03 Side 10 Description Technical data 4 Technical data Dimensions Weight Table 2: General specifications General specifications 95 mm x 50 mm x 15 mm (B x W x H) 60 g GPS Power supply VC3 3.3 V DC 5 %

Max. 190 mA Operate VBAT 3 V DC 0,25 V Max. 40 A for Keep Alive Preamp. Power 3,3 V DC 6 V DC 5 %

Max. 50 mA GSM VC5 5,0 V DC 5 %

Average current (in mA at 5V nominal):

0,015 in OFF mode 2 (EN pulled to LOW, the internal regulator is switched off) 17*

in OFF mode 1 (AT+CPOF was issued and SOFT_ON was set to LOW, the internal regulator is still working) 30*

in idle mode (base station sends at -85 dBm) 260*

in transmit mode at power level 7 350*

in transmit mode at power level 5 (Maximum)

* Serial interface is applied and working. Table 3: Power supply Temperature limits Operation Transportation Storage Table 4: Temperature limits

-20 C to +55 C

-40 C to +70 C

-25 C to +70 C Interface A Interface B Interface C Interface D Table 5: Interface specifications Interface specifications 60pin connector AMP 177984-2 GPS 50 MCX female, for active 3 V GPS antenna GSM 50 , SMB male SIM card reader for small SIM cards (3V) A2DJP Version 1.03 Side 11 Description Technical data A B C 60 D Figure 3: Interface connections 1 Pin No. 1 Figure 4: Interface A: 60pin connector AMP 177984-2 A2DJP Version 1.03 Side 12 Description Correction Pin configuration AMP 177984-2 Pin GSMmodem Description Level 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 MIC P15 MIC N15 SPK P2 SPK N2 DTR CTS DSR RTS RI DCD SOFT ON RING PWM TX RX Free Microphone 1 positive Microphone 1 negative Speaker 1 positive Speaker 1 negative RS-232 Data Term. Ready RS-232 Clear To Send RS-232 Data Set Ready RS-232 Ready To Send RS-232 Ring Indicator differential inp. differential inp. differential out. differential out. CMOS 2,8 V inp. CMOS 2,8 V out. CMOS 2,8 V out. CMOS 2,8 V inp. CMOS 2,8 V out. RS-232 Data Carrier Detect CMOS 2,8 V out. Turn phone on Ringer Interface RS-232 Transmit Data RS-232 Receive Data CMOS 2,8 V inp. CMOS 2,8 V out. CMOS 2,8 V out. CMOS 2,8 V inp. RESET GSM Reset-Active Low SCHMITT RTC back-up batt. Supply inp. Power supply Power supply Power supply Power supply General purpose in/out Power supply 5 V DC 5 V DC 5 V DC 5 V DC CMOS 2,8 V 5 V DC Internal Power enable CMOS 2,8 V inp. Free VCCRTC Free Free Free Free VC5 VC5 VC5 VC5 GPIO1 VC5 Free EN GROUND GROUND GROUND Table 1: Pin configuration AMP 177984-2, GSM-modem A2DJP Version 1.03 Side 13 Description Pin GSMmodem Description Level 34 35 36 37 38 39 40 GROUND SIMPREK GROUND SIMDATA SIMVCC SIMRST SIMCLK SIM present for external card CMOS 2,8 V inp. SIM Data SIM Card power supply SIM Reset SIM Clock inp./out. 3 V DC inp. out. Table 1: Pin configuration AMP 177984-2, GSM-modem Pin GPS receiver Description Level TMARK 1 PPS time Mark Output 10 KHZ UTC 10 kHz Clock CMOS 3,3 V out. CMOS 3,3 V out. GROUND GROUND SDI 2 GROUND GROUND SDO 2 SDO 1 SDI 1 Serial 2 Data Input CMOS 3,3 V inp. Serial 2 Data Output Serial 1 Data Output Serial 1 Data Input CMOS 3,3 V out. CMOS 3,3 V inp. CMOS 3,3 V out. WHEEL_TICK Reserved for Wheel in GROUND DIRECTION DSP_GPIO 3 M-RST GYRO_IN NMEA Protocol select ROM default select Master Reset Input Reserved for Gyro_in VBATT_RTC Battery Backup Input 3,3 VDC Primary DC Power Low Low Low 3 V DC 3,3 V DC PREAMP_POWER Preamplifier Power 3,3 V DC 6 V DC 3,3 VDC Primary DC Power 3,3 V DC 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Table 2: Pin configuration AMP 177984-2, GPS receiver A2DJP Version 1.03 Side 14 Description GSMmodem 5 GSMmodem 5.1 General 5.1.1 GSM capability E-GSM and DCS (GSM ETSI Phase I and II) 5.1.2 GSM data services 300 14400 BPS, asynchronous, transparent and non-transparent

(V.21, V.22, V.23, V.22bis, V.26ter, V.32, V.34, V.110) 5.1.3 RF characteristics EGSM Sensitivity DCS Sensitivity Selectivity @ 200 kHz Selectivity @ 400 kHz Dynamic range Intermodulation Co-channel rejection Table 8: Receiver Receiver

< 104 dBm

< 100 dBm

> +9 dBc

> +41 dBc 62 dB

> -43 dBm 9 dBc Maximum output power (EGSM) Maximum output power (DCS) Minimum output power (EGSM) Minimum output power (DCS) H2 level H3 level Noise in 925 - 935 MHz Noise in 935 - 960 MHz Noise in 1805 - 1880 MHz Phase error at peak power Frequency error Table 9: Transmitter Transmitter 33 dBm 2 dB 30 dBm 2 dB 5 dBm 5 dB 0 dBm 5 dB 30 dBm 30 dBm 67 dBm 79 dBm 71 dBm

< 5 RMS 0.1ppm max A2DJP Version 1.03 Side 15 Description GSMmodem 5.1.4 SIM card reader Internal, for small SIM cards (3 V) External, 10 15 cm maximum cable length 5.1.5 RS 232 2.8 V 300..115200 Table 10: RS 232 RS 232 RX, TX, RTS, CTS, DTR, DSR, DCD, RI Baud rates for serial link (2400 19200 with auto-bauding) 5.1.6 Possible external devices 2 K differential 2 V 0,5 mA 2 K differential 2 V 0,5 mA

> 50 (<1nF)

> 50 (<1nF) Table 11: Audio Audio Microphone 1 impedance Microphone 1 bias voltage Microphone 1 input current Microphone 2 impedance Microphone 2 bias voltage Microphone 2 input current Speaker 1 impedance Speaker 2 impedance 5.2 Special functionality pins Table 6 and Tabl e7 show the pin-configuration of the AMP 177984-2. In these tables CMOS means 2.8 V. You may use a 3 V or 3.3 V CMOS level logic (never 5 V) on the 2.8 V I/O's. However, it is requi-

red to add serial resistance on all the lines you will use (typical value:

from 4.7 to 10 K). There are a few pins needed for the operation of the module. The handling of that pins is described as follows. A2DJP Version 1.03 Side 16 Description GSMmodem Pin 30 (EN) This signal is an input of the internal voltage regulator. Pull to LOW to switch the voltage regulator off (for minimum current consumption). Pull to HIGH or leave the signal open if EN is not used. Pin 27 (GPIO 1 Flash_LED) This signal can be used to show the current status of the module:

If GPIO 1 is LOW then the module is off. If it is continuously HIGH then module is on, but not registered into a network. If GPIO 1 is flashing in a 2sec period then the module is on and registered into a network. If it flashes in a 1sec period then the module is on and a call is in progress (incoming or outgoing). GPIO 1 can be an input into a controller (here it needs to be driven by an open collector circuit) or used together with a LED (see picture below):

VCC 3V D 1 L E D R 2 330 Q 1 N P N GPIO 1 R 1 47K Figure 5: GPIO 1 Flash_LED Pin 35 (SIMPREK) This signal needs to be driven by an open collector circuit. It is used by the module's firmware to detect a SIM card exchange when the module is online. A high to low transition means SIM card is inserted and the module will be able to accept the AT+CPIN command. A low to high transition means SIM card has been removed, the mo-dule will de-register from the network and show the unsolicited error code CME ERROR: 10. A2DJP Version 1.03 Side 17 Description GSMmodem DVCC SIMPREK SIMPRES 10 K 100 K BC817 1 K Figure 6: Sample-application SIMPREK Pin 16 (RESET GSM) This signal needs to be driven by an external open collector circuit. To issue a hardware reset pull the signal to LOW for a mini-

mum of 100 ms. Pull the signal to HIGH or leave it open for normal operation. Pin 11 (SOFT_ON) This signal needs to be driven by an external open collector circuit. For switching the module on (external power must be connec-

ted!) set the SOFT_ON signal to HIGH for approx. 3 sec. The signal can be left HIGH until module shall be switched off. For switching the module off the commands AT+CPOF or AT+CFUN=0 have to be issued. If SOFT_ON is HIGH then only the RF part of the module is off, but the AT command set is still working (AT+CFUN=1 can be used to wake up the RF part again) the Flash_LED stays HIGH. If SOFT_ON is LOW then the complete GSM engine goes OFF the Flash_LED goes LOW. Some small power con-

sumption will be still there, use the EN pin to avoid that. It is not recommended to switch the module on and off by means of the power supply (e. g. by tying the SOFT_ON constantly to HIGH). The module will so have no possibility to de-register correctly from the network and this will cause problems at the next attempt to regi-

ster. A2DJP Version 1.03 Side 18 Description GSMmodem Pin 18 (VCCRTC) This is the Pin for a +3 V DC back-up battery supply for the real-time-

clock. 5.2.1 Firmware download procedure The download procedure will be documented together with the firm-

ware release on the FALCOM homepage (http://www.falcom.de). 5.2.2 Resetting the GSMmodule by AT+CFUN=1,1 If the GSM software is still running, while the user feels the need to reset the module, AT+CFUN=1,1 can be used. This will de-register the modem from the network and bring it into the state before the PIN could be entered. The Flash_LED pin will shortly toggle to OFF and back to ON again to show the progress. 5.3 GSM 07.05. and 07.07. commands The GSM-modem of the FALCOM A2D-JP is controlled by an ad-

vanced set of AT-commands. In the following list there is a short overview of these commands. For further information it is recom-

mended to read the ETSI GSM recommendation or have a look at the FALCOM A2(D) user manual which can be downloaded from the homepage of FALCOM http://www.falcom.de/service/downloads

(document: a2dman.pdf). A2DJP Version 1.03 Side 19 Description GSMmodem 5.3.1 General AT commands Command Meaning Command Meaning

ATA ATDx ATDx;

ATE0 ATE1 ATH ATO ATS0=n Switch to command mode when con-

nected Answer call Dial data number x Dial voice number x Disable command echo Enable command echo Disconnect existing connection Return to data mode Go off-hook after n-th ringing signal

(n = 1- 5) ATS0=0 No automatic answering of calls ATZ AT&C0 Load stored profile DCD always ON Table 12: General AT commands AT&C1 AT&D0 AT&D1 AT&D2 AT&W AT+IPR AT+IFC AT+VGR AT+VGT AT+VTD AT+VTS 5.3.2 SMS AT commands (GSM 07.05) DCD matches state of the remote modem's data carrier Ignore DTR signal At DTR-> OFF: Switches from data to command mode At DTR-> OFF: Clear down the call Store current configuration Select the modem's data rate Select the modem's local flow control setting Tune the receive gain Tune the transmit gain Define DTMF tone duration Send DTMF tone Command Meaning Command Meaning AT+CSCA Service centre address AT+CMGR Read message AT+CSCS Select TE character set AT+CMGS Send message AT+CSDH Show text mode parameter AT+CMGD Delete message AT+CSMP Select text mode parameter AT+CMGL List messages AT+CSMS Select message service AT+CNMI New message indication AT+CPMS Preferred message storage AT+CSAS Save SMS Settings AT+CMGF Text mode / PDU Mode AT+CRES Restore SMS Settings Table 13: SMS AT commands A2DJP Version 1.03 Side 20 Description GSMmodem 5.3.3 GSM AT commands (GSM 07.07) Command Meaning Command Meaning AT+CBST Select the bearer type AT+CPIN Enter PIN and query blocks AT+CCFC AT+CCWA AT+CFUN Control the call forwarding supple-

mentary service AT+CPWD Change PIN or the supplementary password Control the call waiting supplemen-

tary service Select the functionality level in the modem AT+CSQ Display signal quality information AT+CR Select connection service report AT+CGMI Display manufacturer ID AT+CGMM Display model ID AT+CRC AT+CLIP AT+CGMR Display version of GSM module AT+CLIR AT+CGSN Display serial number (IMEI) AT+COLP Select call service report Calling line identification presenta-

tion Control the calling line identification presentation Control the connected line identifica-

tion presentation AT+CLCK Change the PIN state or the call bar-

ring supplementary service AT+GCAP Display the complete capability list AT+CREG Display network registration status AT+CMEE Report mobile equipment errors AT+COPS AT+CPAS Commands relating to network ope-

rator selection Display the activity state of the mobile Table 14: GSM AT commands AT+CEER Extend error report A2DJP Version 1.03 Side 21 Description GPS receiver 6 GPS receiver 6.1 General This description is focussed on the GPS receiver of the FALCOM JP2 series from FALCOM GmbH. It contains some short information about purpose and use of the GPS receiver. The GPS receiver is a single-board 12 parallel channel receiver intended as a component for OEM Products. The GPS receiver continuously tracks all satelli-

tes in view, thus providing accurate satellite position data. The highly in-tegrated digital GPS receiver uses the Zodiac 2000 chip set com-

po-sed of two custom CONEXANT devices together with suitable memory devices. Please consult CONEXANT for special information about the GPS Zodiac 2000 chip set. Signal acquisition performance Initial ERROR uncertainties maximum ephemeris age Satellite acquisition state TTFF 90 %

probable

(minutes) Warm Initialised Cold Frozen 0,40 1,00 2,30 N/A position (km) velocity (m/sec) time (min.) hours 100 100 N/A*

N/A 75 75 N/A N/A 5 5 N/A N/A 4 4 N/A N/A Table 15: Signal acquisition performance

* Signal acquisition performance N/A = Not available Accuracy Position (meter) horizontal 3-D vertical CEP

(2 dRMS) velocity

(meter/sec) 25 50 50 93 78 0.1 100 (95 %) 200 (95 %) 173 (95 %) SA off SA on Table 16: Accuracy A2DJP Version 1.03 Side 22 Description GPS receiver 6.2 Product overview The GPS receiver requires conditioned 3,3 V DC power and a GPS signal from a passive or active antenna. The 12 channel architecture provides rapid Time-To-First-Fix

(TTFF) under all start-up conditions. As long as visible satellites are not obscured, acquisition is guaranteed under all initialisation con-

ditions. To minimise TTFF when main power is removed from the GPS re-

ceiver SRAM with external DC supply voltage and EEPROM are used to archive RTC time and prior position data. Communication with the GPS receiver is established through two asynchronous serial I/O ports. The GPS receiver's primary serial port outputs navigation data and accepts commands from OEM ap-

plication in NMEA-0183 format or CONEXANT binary format. The secondary port is configured to accept differential GPS (DGPS) corrections in the RTCM SC-104 format. 6.2.1 GPS receiver architecture Figure 7: GPS receiver architecture The functional architecture of the GPS receiver is shown in Figure 7. The GPS receiver design is based on the Conexant Zodiac chip set, the RF-Monopac and the Scorpio DSP, which contain the required GPS functionality. The RF-Monopac contains all the RF down-con-

version and amplification circuitry, and presents the In-Phase (I) and Quadrature-Phase (Q) Intermediate. A2DJP Version 1.03 Side 23 Description GPS receiver Frequency (IF) sampled data to the Scorpio device. The Scorpio de-

vice contains an integral microprocessor and all the required GPS-

specific signal processing hardware. Memory and other external supporting components configure the GPS receiver into a complete navigation system. 6.2.2 Product applications Automotive applications Marine navigation applications Aviation applications Timing applications 6.3 Technical description 6.3.1 General information Since the GPS receiver determines its position by ranging signals from four or more GPS satellites orbiting the Earth, its antenna must have reasonable visibility of the sky. Navigation modes The GPS receiver supports three types of navigation mode operati-

ons. Three dimensional navigation (3D): The GPS receiver defaults to 3-D navigation whenever at least four GPS satelli-

tes are being tracked In 3-D navigation, the GPS receiver com-

putes latitude, longitude, altitude and time information from satellites measurements. Two dimension navigation (2D): When less than four GPS satellite signals are available or when a fixed value of altitude can be used to produce an acceptable navigation solution, the GPS receiver will enter the 2-D navigation mode. Forced ope-

rating in 2-D mode can be commanded by the OEM. DGPS navigation: The GPS receiver processes DGPS cor-

rections through its Auxiliary serial port. These corrections must be compliant with the RTCM recommended standards RTMC-104. Satellites acquisition The TTFF of the GPS receiver depends from start conditions. Start condition means if old satellites data are available and how old they are. The conditions are:

Warm start: results from an short (few minutes) interrupt by continuous navigation. Data are available in SRAM. A2DJP Version 1.03 Side 24 Description GPS receiver Initialised start: is if last known position (in EEPROM) and time are available. Satellite data validity has expired. Cold start: means only almanac information is used. Frozen start: no valid internal data source available. Built in test (BIT) mode A BIT is available on command from the application software using binary Message 1300. The BIT is used to provide a health status of the GPS receiver functions. Results of the BIT are available in binary Message 1100. A BIT command is possible in NMEA protocol, too. Power modes and power sequencing requirements The GPS receiver have three power modes: Off, Operate, and Keep-Alive. The Off mode assumes that neither main power is available. In the Operate mode the GPS receiver's components are full supp-

lied at 3,3 VDC. The M_RST control signal is at a "high" logic level. From Operate mode, the GPS receiver will enter a "Keep Alive"

mode when supply voltage is available at the VBATT signal input and VC3 voltage is removed. VBATT provides power for SRAM and RTC. 6.3.2 Hardware interface The following paragraphs describe the basic functions allocated to the various pins on the AMP interface connector. These functions are divided into three groups: Configuration and timing signals, se-

rial communication signals, and DC input signals. 6.3.2.1 Configuration and timing signals Pin 55: Master reset (M_RST) This signal allows the OEM to generate a system hardware reset to the GPS receiver. This signal is capable of being driven directly by an external microprocessor or by external logic without the need for any external pull-up or pull-down resistors. The OEM can generate a system reset to the GPS receiver by pulling the M_RST control si-

gnal low to ground. The M_RST signal must be pulled to a CMOS logic high level coincident with, or after, the application of prime DC power for the receiver to enter its Operate mode. The M_RST must be held at ground level for a minimum of 150 nanoseconds to assure proper generation of a hardware reset to the receiver. This signal can also be used to provide control of the GPS receiver's Operate mode without removing prime input power from the GPS re-

ceiver. When M_RST is pulled to ground, the GPS receiver will enter a low power state for as long as the M_RST signal is asserted low. A2DJP Version 1.03 Side 25 Description GPS receiver In this state, a portion of the GPS receiver's RF circuitry is de-ener-

gized, the SRAMs are transitioned into their low power data reten-

tion state, and the RTC device is maintained. When the GPS recei-

ver is placed into this low power state through the use of the M_RST control signal, the GPS receiver will continue to draw current from the primary input power (PWRIN) but at a reduced level. When the M_RST signal is subsequently asserted high by the OEM, RF power is re-applied, a system reset is generated, and the GPS receiver will return to its normal Operate mode. Pins 56, 53, 54 and 51: General Purpose I/O (GPIO1, GPIO2, GPIO3 and GPIO4) The GPS receiver provides four General Purpose Input/Output

(GPIO) connections that are available for use by the OEM. These GPIO connections are digital interfaces that are OEM soft-

ware programmable as inputs or outputs. Pin 41: UTC Time Mark Pulse (TMARK) The Time Mark output provides a one pulse-per-second (1 pps) signal to the OEM application processor. When the GPS receiver provides a valid navigation solution, the rising edge of each TMARK pulse is synchronized with the UTC one second epochs to within 300 nsec. Pin 42: 10 kHz UTC synchronized clock This is a 10 kHz clock waveform that is synchronized to the UTC TMARK pulse. This clock signal is a positive logic, buffered CMOS level output. 6.3.3 Serial communication signals Both the configuration and timing signals, described in the previous section, and the serial communication signals described below must be applied according to the limits shown in table 17. Symbol Parameter Limits (*) Units PWRIN 3 Main power input to the JP2 (+3,3 V DC) 3,135 to 3,465 VIH (min) Minimum high-level input voltage 0.7 x PWRIN VIH (max) Maximum high-level input voltage VIL (min) Minimum low-level input voltage VIL (max) Maximum low-level input voltage VOH (min) Minimum high-level output voltage VOH (max) Maximum high-level output voltage Table 17: Digital signal requirements PWRIN

- 0,3 0,3 x PWRIN 0,8 x PWRIN PWRIN volts volts volts volts volts volts volts A2DJP Version 1.03 Side 26 Description GPS receiver Symbol Parameter Limits (*) Units VOL (min) Minimum low-level output voltage 0 VOL (max) Maximum low-level output voltage 0,2 x PWRIN tr, tf C out Input rise and fall time Maximum output load capacitance 50 25 volts volts nanoseconds picofarads

(*) PWRIN refers to a + 3,3 V DC power input (PWRIN-3) Table 17: Digital signal requirements Pins 49 and 50: host port serial data input and output (SDO1 and SDI1) The host port consists of a full-duplex asynchronous serial data in-

terface. Both binary and NMEA initialization and configuration data messages are transmitted and received across this port. The default ROM settings for the host serial data port are binary message format, 9600 baud, no parity, 8 data bits, and 1 stop bit. The default may be modified using custom OEM software. The serial port settings may also be changed to a new configuration using binary serial message 1330. The new serial port settings are stored in SRAM and serial EEPROM. The next time the GPS recei-

ver is powered on or a master reset is initiated, the serial port confi-

guration parameters are accessed in the following priority:

1. 2. 3. If SRAM checksums are valid, the communication parameters and initialization data parameters will be read from SRAM. If SRAM checksums are invalid and EEPROM checksums are valid, the communication parameters and initialization data parameters will be read from EEPROM. If SRAM checksums are invalid and EEPROM checksums are invalid, the default values in ROM will be used. The OEM application must provide any Line Driver/Line Receiver

(LD/LR) circuitry to extend the range of the interface. Port Idle is nominally a CMOS logical high (+ 3,3 V DC). Pin 45 and 48: Auxiliary port serial data (SDI2 and SDO2) The auxiliary port consists of a second half-duplex asynchronous serial data interface. This port is configured to receive RTCM DGPS correction data messages. The default ROM settings for the Auxiliary Serial Data Port are 9600 baud, no parity, 8 data bits, and 1 stop bit. The default may be mo-

dified using custom OEM software. The serial port settings may also be changed to a new configuration using binary serial message 1330. The new serial port settings are stored in SRAM and serial EEPROM. The next time the GPS recei-

ver is powered on or a master reset is initiated, the serial port confi-

guration parameters are accessed in the following priority:

1. If SRAM checksums are valid, the communication parameters and initialization data parameters will be read from SRAM. A2DJP Version 1.03 Side 27 Description GPS receiver 2. 3. If SRAM checksums are invalid and EEPROM checksums are valid, the communication parameters and initialization data parameters will be read from EEPROM. If SRAM checksums are invalid and EEPROM checksums are invalid, the default values in ROM will be used. The OEM application must provide any LD/LR circuitry to extend the range of the interface. Port Idle is nominally a CMOS logical high

(+ 3,3 V DC). 6.3.4 DC input signals Do not apply power to a passive antenna or damage to the receiver will occur.

Pin 59: Preamp power input (PREAMP) The OEM may optionally supply power to a preamplifier using the antenna cable center conductor. The maximum voltage is +12 V DC and the current must not exceed 100 mA. Pins 58 and 60: Power input (PWRIN 3) This signal is the main power input to the GPS receiver. Regulated DC power requirements are shown in table 2. Pin 57: Battery backup power input (VBATT) This signal is used to provide a DC power input to the SRAM and RTC devices only. The GPS receiver automatically switches to the VBATT input signal when primary DC power (PWRIN) is removed from the board. This feature is intended to provide the GPS receiver with a "warm start" capability by maintaining an accurate time source and using position and satellite data stored in SRAM after prime input power

(PWRIN) has been removed from the GPS receiver. Pins 43, 44, 46, 47 and 52: Ground (GND) DC grounds for the board. All grounds are tied together through the GPS receiver's printed wiring board (PWB) ground plane and should all be grounded externally to the GPS receiver. 6.3.5 Software interface The host serial I/O port of the GPS receiver serial data interface sup-

ports full duplex communication between the GPS receiver and the OEM application. Data messages can be in the Conexant binary for-

mat or NMEA-01 83 format. The GPS receiver also contains an auxiliary port dedicated to direct processing of the RTCM SC-104 messages for DGPS corrections. A2DJP Version 1.03 Side 28 Description GPS receiver 6.3.5.1 Binary data message If you wish to use binary data message you get detailed information in [6]. Binary data have more information but are difficult to use. Output message name Default messages Message ID Geodetic position status Channel summary Visible satellites Position, ground speed, course over ground, climb rate, map, datum and validity Signal tracking information per satellite Their corresponding elevation and azimuth best possible DOP Differential GPS status Corrections status of satellite Channel measurement ECEF position Receiver ID User-settings Built in test results UTC time mark pulse Frequency standard Power management Per channel Send by power up For the hardware parts Parameter in use Duty cycle in use Serial port communication Parameters in use EEPROM update EEPROM status Frequency standard table Boot status Status/Error Show data ID for the last write Show failure and status information By firmware Geodetic position and velocity initiali-

sation Position, ground speed, course, over ground, climb rate User defined datum definition To transform the position solution Map datum select For 1210 Satellite elevation mask control Set the elevation mask angle Satellites candidate select Differential GPS control Cold start control Disable cold start Solution validity criteria Position validity status User entered altitude input Define altitude for 2D navigation Application platform control Means special using Nav configuration Control features by navigation Table 18: Binary data message 1000 1002 1003 1005 1007 1009 1011 1012 1100 1108 1110 1117 1130 1135 1136 1160 1180 1190 1200 1210 1211 1212 1213 1214 1216 1217 1219 1220 1221 A2DJP Version 1.03 Side 29 Description GPS receiver Output message name Default messages Message ID With different start condition Is used by GPS without non-volatile storage Perform built in test Restart command Frequency standard Input parame-

ters Power management control Serial port communication parame-

ter Message protocol control Factory calibration input For oscillator Raw DGPS RTCM SC-104 data In lieu of the auxiliary port Frequency standard table input data Flash reprogram For flash update Table 18: Binary data message 1300 1303 1310 1317 1330 1331 1350 1351 1360 1380 A2DJP Version 1.03 Side 30 Description GPS receiver 6.3.5.2 NMEA data message Detailed information shown in [6]. Output message name Default messages Message ID Conexant proprietary Built In test Conexant proprietary Error/status GPS Fix Data GPS DOP and active satellites GPS satellites in view Conexant proprietary Receiver ID Test results for devices Time, position, HDOP Operating mode, DOP per coordinate, satellite number Position an SNR per satellite. Max four satellites per sentence Channels, software version Recommended minimum specific GPS Data (*) Time, date, position, course and speed Track made good and ground Speed Course and speed Conexant proprietary Zodiac channel status (*) PRN, status BIT ERR GGA GSA GSV RID RMC VTG ZCH Input message name Default messages Message ID Conexant proprietary built in test command Conexant proprietary log control message Conexant proprietary receiver initialisation Conexant proprietary protocol message Controls the output of the NMEA messages Initialisation with specified parameters Set the message format to BIN Standard query message Request a NMEA message Table 19: NMEA data message IBIT ILOG INIT IPRO Q A2DJP Version 1.03 Side 31 Description A2D-JP evaluation board 7 A2D-JP evaluation board The quickest way to get first results with the embedded GSM/GPS module is the activation by the A2D-JP evaluation board by means of a terminal program. Figure 8: The A2D-JP evaluation board Figure 8 shows the A2D-JP evaluation board in complete packaging i. e. A2D-JP evaluation board A2D-JP module power supply FRIWO type FW 3299 (12 VDC/580 mA) GPS antenna ANT-006 RS232 combined cable KA08 headset with RJ45 plug The evaluation board transfers data from GSM module and GPS re-

ceiver to two separate serial RS232 interfaces. For voice communication by the GSM module there is a headset A2DJP Version 1.03 Side 32 Description A2D-JP evaluation board available. So the data of both modules can be processed by your PC at the same time. Thus the evaluation board offers an excellent possibility for develop-

ment and testing (trials) of your own application on the base of the embedded GSM/GPS modules A2D-JP. A2DJP Version 1.03 Side 33