Montage 715000 Traxit X 2G GPS Module User Manual

Montage Traxit X 2G GPS Module

User Manual

© Montage Asia 2011 1 GT2GM-M Wireless Module User Manual Status： [ ]Draft [ ]Release [√]Revise File Indicator： EL_GT2GM-M Hardware Design Guide Current Version： 1.2 Author： Date： 2012-07-18
© Montage Asia 2011 2 Version History Version Author Attendee Date Remark V1.0 2012-03-20 V1.1 2012-04-18 Added some options for pin V1.2 Cheng 2012-05-25 Contents
© Montage Asia 2011 3 Revision History..........................................................................................................................2 Contents ………………………………………………………………………………………...3 Version History ................................................................................................................................. 2 1 Introduction ............................................................................................................................... 4 1.1 Overview ............................................................................................................................. 4 1.2 Electrical features ................................................................................................................ 4 1.3 RF features .......................................................................................................................... 4 1.4 SW features ......................................................................................................................... 4 1.5 Terms and Abbreviations ..................................................................................................... 4 2 Feature....................................................................................................................................... 5 3 Block Diagram .......................................................................................................................... 6 4 ELECTRICAL SPECIFICATION ............................................................................................ 6 4.1 Supply Voltage .................................................................................................................... 6 4.2 Recommended Operation Conditions ................................................................................. 6 4.3 Power Consumption ............................................................................................................ 7 4.4 Radio Performance .............................................................................................................. 8 4.5. Output power...................................................................................................................... 8 4.6 Sensitivity ........................................................................................................................... 8 5 PIN definition.......................................................................................................................... 10 6 Functional description ............................................................................................................. 11 6.1 ANT PORT............................................................................................................ 11 6.2 VBAT Pin (Pin 2~4) .............................................................................................. 12 6.3 Charge in Pin (Pin 1) ............................................................................................. 12 6.4 UART interface .............................................................................................................. 12 6.5 GPIOs .................................................................................................................... 13 6.6 LED ....................................................................................................................... 13 6.7 SIM card interface .......................................................................................................... 13 6.8 Power on ........................................................................................................................ 14 7 Mechanical Structure(mm)...................................................................................................... 15 8 Important announcement ......................................................................................................... 16 9 Construction and setup ............................................................................................................ 17
© Montage Asia 2011 4 1 Introduction 1.1 Overview The GT2GM-M module is a tiny, standards-based, wireless data modem that provides GPRS wireless data connectivity, it suitable for embedding environment in some wireless products, such as wireless modem、handheld computers、GPS Tracker 、other machine-to-machine devices and vertical applications. In addition, The GT2GM-M module allows you access to the Internet easier and convenient. 1.2 Electrical features Input supply voltage: • VBAT—Min 3.3 V, Max 4.2V Typical DC power consumption(Total): • Standby current: 2 mA • GPRS（1Tx+4Rx）Data current: 300 mA—350 mA MCP(Nordflash+SRAM) working current:20mA@1.8V Baseband CPU working current:40mA@2.8V RF Power amplifier working current:500mA@3.8V 1.3 RF features • 2G band support : PCS 1.9GHz • Support for GPRS multi-slot class 12 1.4 SW features • Standard AT command interface • embedded TCP/IP、UDP protocol stack 1.5 Terms and Abbreviations JTAG Joint Test Action Group ADC Analog to Digital Converter LED light-emitting diode PA Power Amplifier UART Universal Asynchronous Receiver and Transmitter RF Radio Frequency I/O Input / Output PD Pull Down PU Pull Up
© Montage Asia 2011 5 GPIO general purpose input or output port 2 Feature Item Description Temperature range Normal range: -20°C to +70°C (full compliant) Storage: -40°C to 85°C Weight (in g) 6g (typical) Physical dimension 29.5 x 26.0 x 2.4 mm Connector Type 36 Pin stamp Power supply External input : 3.3V to 4.2V Power consumption Off mode: 0 A (typical) Sleep mode: 0.8mA Standby mode: 2.0mA SIM card Support 3.0V SIM card GPIOs Support 8 GPIOs output UART UART1:For debug and flash download, RF calibration or AT command Communication. UART2:For data service Power on key pin Low level for power on system. System Voltage (GPIO Voltage) 2.8V Input/Output Impedance (ANT impedance) 50 ohm TCP/IP,UDP Built-in TCP/IP ,UDP protocol stack
© Montage Asia 2011 6 3 Block Diagram Figure 1 GT2GM-M Block Diagram 4 ELECTRICAL SPECIFICATION 4.1 Supply Voltage Symbol Parameter Min Typ Max Unit VBAT PMIC, PA 3.3 3.8 4.2 V Voltage Ripple 2%, 0~100kHz (Max. valuesnot exceeding operating voltage) Input current VBAT 1.2 A 4.2 Recommended Operation Conditions 4.2.1 TEMPERATURE, HUMIDITY Symbol Parameter Min Typ Max Unit Ta Ambient Operation Temperature —20 70 C Ts Storage Temperature —40 25 85 C Humidity Relative Humidity 95% %
© Montage Asia 2011 7 4.2.2 Digital signal DC electrical specifications Symbol Parameter Min Typ Max Unit Supply voltage VCC Regulated 2.7 2.8 2.9 V Low level inputvoltage VIL —0.3 0 0.35*VCC V High level inputvoltage VIH 0.65*VCC 2.8 VCC+0.3 V V 4.3 Power Consumption The power consumption is typical value measured at 25 C temperature. Opernation Min Typ Max Unit Parametmeters Input Voltage 3.4 3.6 4.2 V Off mode 500 600700 uA GPRS Data transfer 1Rx 1Tx 850MHZ PCL=5,TX=33dBm 382 375 373 mA PCL=19,TX=5dBm 162 154 152 mA 1900MHZ PCL=0,TX=30dBm 311 308 305 mA PCL=15,TX=0dBm 138 131 127 mA GPRS Data transfer (clasee12) 4RX,1TX 850MHZ PCL=5 387 385 381 mA 1900MHZ PCL=0 339 335 331 mA
© Montage Asia 2011 8 4.4 Radio Performance Over full range of values specified in the “Recommended Operation Condition” Features Description Frequency Band GPRS: Dual band, 850/1900 Max. TX power Class 4 (+33dBm ±2dB) for EGPRS 850 Class 1 (+30dBm ±2dB) for PCS/GPRS 1900 4.5. Output power TRP(dBm) Band Designation Freq(MHz) TCH Conducted Power (dBm) FS SPEC Test criterion GSM 850 TX 824.20 128 31.5 26.50 CTIA 2.2.2 TX 836.60 190 31.5 TX 848.80 251 31.5 GSM 1900 TX 1850.20 512 28.5 25.50 CTIA 2.2.2 TX 1880.00 661 28.5 TX 1909.80 810 28.5 4.6 Sensitivity TIS(dBm) Band Designation Freq(MHz) TCH Conducted Sensitivity (dBm) FS SPEC Test criterion
© Montage Asia 2011 9 GSM 850 RX 869.20 128 -107.00 -99.00 CTIA 2.2.2 RX 881.60 190 -107.00 RX 893.80 251 -107.00 GSM 1900 RX 1930.20 512 -107.00 -101.00 CTIA 2.2.2 RX 1960.00 661 -107.00 RX 1989.80 810 -107.00
© Montage Asia 2011 10 5 PIN definition Pin name DIR Pin Number First Function(Note 1) Second function(Note 1) GND I 5,7,16,17 32,33,3435,36 Ground Same as left GSM ANT I/O 6 Antenna feed point Same as left VBAT I 2,3,4 Power supply Same as left VCHG I 1 Battery Charging input port (DC 5V—7V) Same as left System_reset I 9 System reset pin(low level valid) Same as left GPIO3 I/O 8 General purpose input or output port with pull up 47K KCOL4 PWRKEY I 10 POWER KEY(low level valid in 2 seconds) Same as left SIMDAT I/O 11 SIM card data signal Same as left SIMCLK I 12 SIM card clock signal Same as left SIMRST I 13 General purpose input output Same as left SIMVCC I 14 SIM card power supply(Need added C=100nF to GND) Same as left VIO O 15 2.8V@100mA output DC voltage Same as left GPIO45 I/O 18 General purpose input or output port with pull down 47K KROW7 URXD1 I/O 19 UART 1 data receiving port(for debug, download S/W, AT command) Same as left UTXD1 I/O 20 UART 1 data transmitting port(for debug, download S/W, AT command) Same as left UTXD2 I/O 21 UART 2 data transmitting port Same as left URXD2 I/O 22 UART 2 data receiving port Same as left
© Montage Asia 2011 11 LED I 23 LED sink port Same as left GPIO1 I/O 24 General purpose input or output port with pull up 47K,or interrupt input KCOL6 GPIO2 I/O 25 General purpose input or output port with pull up 47K KCOL5 EINT0 I 26 Interrupt input port Same as left GPIO33 I/O 27 General purpose input or output port with pull down 47K Speaker negative GPIO44 I/O 28 General purpose input or output port with pull down 47K Speaker positive LED_GPS I 29 LED sink port (For GPS signal indication) Same as left SCL O 30 I2C Serial clock port or GPIO15 Microphone positive SDA I/O 31 I2C Serial data port or GPIO17 Microphone negative Note 1: You can only use first function or second function in one time, don’t using alternately. Default is first Function. 6 Functional description 6.1 ANT PORT In this module, we have one antenna port (PIN 6:ANT) for signal transfer. To reduce the RF trace loss, the antenna port in the module had better be as close as possible to the antenna pad in the PCB. For maximum transmitter power and receiver sensitivity, a 50Ω transmission line is suggested to connect the antenna pad and the antenna port of the module. In addition, the RF signal will be impacted by high data rate. We strongly suggest the audio trace and SIM signal trace to be short as possible and as far away as possible from the RF trace and power line. To prevent cross coupling, signal traces on your PCB must not be routed through the module backside.
© Montage Asia 2011 12 Figure2 GT2GM-M module placement The antenna pad in your PCB should be 3~5mm wide and there must not be any other traces and ground under the pad. If needed, the matching network can be added between the antenna pad and antenna port. The recommended circuit is shown as below: Figure 3 GT2GM-M Antenna match 6.2 VBAT Pin (Pin 2~4) The Power amplifier is supplied by the VBAT pin. During transmitting mode, high output power will draw a large amount of current. The width of this power trace that is connected to the VBAT pin could not be less than 60mil. In addition, it is better to shunt a 100uf@6.3V (low ESR) bypass capacitor on VBAT pins to prevent voltage drop and to reduce ripple.(The maximum current should be 1500mA in some time) 6.3 Charge in Pin (Pin 1) In this module,we added the charge manage circuit for lithium battery , the max charge Circuit should be 400mA. The charge voltage 5.5V+/-0.5V. 6.4 UART interface The UART1 used as debug 、software download or as AT command control Pin name DIR Pin Number Function unit TXD1 O 20 UART 1 data transmitting port RXD1 I 19 UART 1 data receiving port M5206 Module
© Montage Asia 2011 13 The UART2 used as transmitting DATA between the module from user, only supply 2 signals as follow table: Pin name DIR Pin Number Function unit TXD2 O 21 UART 2 data transmitting port RXD2 I 22 UART 2 data receiving port This module also support baud rate from 9600 to 921600 6.5 GPIOs The GT2GM-M module has 8 GPIOs (PIN8,PIN18,PIN24,PIN25,PIN27, PIN28, PIN30,PIN30): Please refer to corresponding programming application for details as to all the GPIO ports. 6.6 LED GT2GM-M module has 2 LED driver pin(pin23 & pin29), please ref. the following sch. 6.7 SIM card interface In the Current Version of hareware,The module includes a SIM Socket.When the user use this interface,You must use the Voltage Dependent Resistor (VDR) or TVS component on the transmission signal in the same time.The SIM Card digital interface in the GT2GM-M ensures the translation of logic levels between GT2GM-M and the SIM Card, for the transmission of 3 different signals: clock signal (SIMCLK,PIN12), reset signal (SIMRST,PIN13) from GT2GM-M to the SIM Card; and serial data signal from GT2GM-M to the SIM Card (SIMDATA,PIN11). The SIM card interface can be programmed to drive a 3.0V SIM Card. Importance that the Voltage Dependent Resistor (VDR) or TVS component is necessary on the transmission signal , and the bias cap is lower than 30pF was suggested. The bypass cap of VCC net was suggested 1uF, and it must be added in your design.
© Montage Asia 2011 14 VDR/TVS.1.2SIM SocketSIM_Vcc1RESET2Clock3SIM_data 6Vpp 5GND 4GND7GND8GND9GND101uF1 2SIMRST SIMDATA SIMVCC SIMCLK C401NCNCNCVDR/TVS.1.2VDR/TVS.1.2Figure4 SIM card interface reference circuit 6.8 Power on The pin 10(powerkey) is for power on the module, please keep 2 seconds low level and then turn to high level to power on the module.
© Montage Asia 2011 15 7 Mechanical Structure(mm)
© Montage Asia 2011 16 BOTTOM VIEW 8 Important announcement The device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not case harmful interference ;changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is
© Montage Asia 2011 17 connected. Consult the dealer or an experienced radio/TV technician for help. Please notice that if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains FCC ID:N69-715000” any similar wording that expresses the same meaning may be used. The antennas used for this transmitter as shown in this filing must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter 9 Construction and setup The Module test is comprised of following basic steps. The first is to put the DUT into module test jig and the second is to connect the PC terminal emulator and start the measurement tool,and then stop the test program: 1) Setup the test platform a. Supply the DC POWER to JIG:Voltage=3.8V and Current=1.0A b. Connect the PC UART to the JIG,and then open the software tool SSCOM32
© Montage Asia 2011 18 c. Put the GT2GM-M module into the JIG,connect the HP8960 with RF cable
© Montage Asia 2011 19 2) Start to test Send the AT command to the module by the software tool, and then the user can control the module by PC
© Montage Asia 2011 20 3) End the test program The user can stop the test program by AT command “ATH” 10.Installation information The Tracker uses a simple cabling arrangement and supports splicing into an OBDII exten-sion for power. Connection to the vehicle is made through a 3mm pitch rectangular header con-nection common to the automotive market. As any GPS location device, the Module should be installed in a vehicle, so that it has an unob-structed view of the sky during normal operation. Double sided foam tape can be used to secure the surface not facing the sky, if needed.

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