Hardware Interface Description Java Box Terminal Motorola G24 Cellular + GPS Engine Version: 02.01A Java Box Terminal_HD_V02.01 17.JUL.
1. Key Features of the Java Box Terminal Feature Implementation General Incorporates G24 module The Motorola G24 module handles all processing for audio, signal and data within the Java Box Terminal.
Java Midlet Major benefits: integration into Java applications, no need for application microcontroller, extremely cost-efficient hardware and software design – ideal platform for industrial GSM applications. The memory space available for Java programs is10.0 MB flash file system and 1.8 MB RAM. Application code and data share the space in the flash file system and in RAM.
2. Interface Description 2.1 Overview Java Box Terminal provides the following connectors for power supply, interface and antennas: 1. On/Off push button. 2. SMA connector (female) for GPS / WiFi antenna. 3. GPRS Led and Power Led. 4. 9-pole (female) SUB-D plug for RS-232 serial interface. 5. SMA connector (female) for GSM antenna. 6. 24-pole GPIO 3mm Micro Mate-N-LOK connector for GPIOs, I²C, ADC, Power. 7. 4-pole 3mm Micro Mate-N-LOK connector for power supply, RTS and Ignition input. 8.
DIN rail attachment Close option Figure 4: Java Box Terminal rear view 1- DIN rail attachment close DIN rail attachment Open option Figure 5: Java Box Terminal rear view 2 – DIN rail attachment open DIN rail attachment option Figure 6: Java Box Terminal rear view 3 – DIN rail attachment lock on DIN rail Battery and SIM drawer cover 11 2 holes 3mm for external attachment Figure 7: Java Box Terminal bottom view Java Box Terminal Hardware Interface Description Released
2.2 Block Diagram Figure 3 shows a block diagram of a sample configuration that incorporates a Java Box Terminal and typical accessories. Antenna GSM On/Off Key SIM G24 SMA Antenna GPS USB UART_2 SMA GPS GPIO Audio Power USB PC UART_1 UART 8 pin RJ45 USB B-Type 9 pin D-Type Com/ RS232 RS232 No. 1 SW2 3 way selection RS232 No. 2 power Led GPRS Led Speaker 4 ohm Audio 24 pin 3w Amp Speaker LDO 3.
24 PIN 70 PIN G24 OEM / Connector Pin # Connector Pin # G24-Lite 1 28 GPIO1 2 30 GPIO2 3 32 GPIO3 4 34 GPIO4 5 36 GPIO5 6 38 GPIO6 7 40 GPIO7 8 42 GPIO8 9 41 ANT_DET 10 49 GPRS 11 26 WKUPO_N 12 1 GND 13 23 RI_N 14 13 DSR_N 15 19 DTR_N 16 17 DCD_N 17 16 WKUPI_N 18 37 ADC1 19 43 ADC2 20 47 ADC3 21 25 RESET_N 22 39 TXEN_N 23 51 IGN 24 VIN Java Box GPIO1 GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7 GPIO8 GPIO9 GPIO10 GPIO11 GND GPIO12 GPIO13 GPIO14 GPIO15 GPIO16 (JTool) ADC1 ADC2 ADC3 RESET_N TXEN_N IGN VIN Table 1: P
2.3 Power Supply The power supply of the Java Box Terminal has to be a single voltage source of POWER 6V-30V capable of providing a peak during an active transmission. The Java Box Terminal is protected from supply reversal voltage. An internal fuse ensures an electrical safety according to EN60950. This fuse is not removable. A fast acting fuse 0.8A with melting is necessary to use with the Java Box Terminal at a 24V power supply system for vehicles.
2.3.2 Block Diagram Battery management On/Off Key G24 RESET_N Battery power IGN Linear Power supply output 3.8V FET Control switch 5V Power sense fail 24 pin Connector ON when input power fail LIPI Battery 3.7V 900mA/h Battery Charger IGNITION RESET_N GPIO control DC/DC Off/On Enable Power 5V DC to DC output 5V Power 6-30VDC Polly Fuse 1.
2.3.3 Block Diagram Battery management flow chart explanation Java Box Power supply Input power 6-30 VDC, the input power pass via poly fuse and over voltage and reverse polarity protection. The DC/DC reduce the power to 5V, the 5V supply for two separate direction, A. First direction to Linear power supply that reduce the power to 3.8V, this power supply will hold the unit power on regular base B.
2.4 Switch on Java Box Terminal There are several ways to turn on the Java Box Terminal: • Switch on via On/Off push button, switch on the Java Box Terminal by pressing the On/Off key signal line must be asserted for at least 2000 ms and then released. • Switch on via IGNITION line on the 24pin connector and the 4 pin connector.
2.4.3 Disconnecting Power Supply Before disconnecting the power supply from the POWER pin make sure the Java Box Terminal is in a safe condition. A safe condition is waiting 2s after the "SHUTDOWN" result code has been indicated. 2.5 GPIO Interface Specification All General Purpose input / output are connected to the related pins of the Motorola G24 module over a 100 Ohms series resistor.
2.6.1 The PC as Data Terminal Equipment (DTE) The software application for using the PC RS232 standard serial interface (COM-port) as Data Terminal Equipment (DTE) is usually Hyper Terminal. Connect using the COM-port to which the Java Box Terminal is connected with the following settings: 2.6.2 RS232 number 2__ Interface G24 UART2 or GPS The serial interface RS232 number 2 of the Java Box Terminal is intended for the communication between the G24 GSM module UART2 and the host application.
2.6.3 SW2 switch selection SW2 select 3 options, only 2 switches allow to be ON at the same time. a. S1 and S2 switch ON, G24 UART2 connect to GPS UART. b. S3 and S4 switch ON, GPS UART connect to PC RS232_2. c. S5 and S6 switch ON, G24 UART2 connect to PC RS232_2. G24 RS232 No. 2 UART_2 RTS RTS CTS UART_2 RX CTS Com/ RS232 S4 S3 TX SW2 RX S1 S2 S6 RX PC TX S5 TX UART GPS SW1 - to enable switch to ON 1. IGN 2. Do Not Use 3. GPIO8 4. WKUP_I 5. GPIO1 6.
2.7 Audio Interface The audio interface provides one analog input for a microphone and one analog output for Speaker. • The microphone input not balanced. • The Speaker output is balanced. • For electret microphone a supply source is implemented by the G24 Modem. • For speaker 3W amplifier implemented output 4ohm. 123456 Pin assignment 1 – GND 2 - Microphone3 - Speaker 4ohm 3w 4 - Speaker 4ohm 3w 5 - Microphone+ 6 - 3.8V Figure 13: Audio RJ11 plug (6-pole female) Java Box 6 5 4 3 2 1 RJ11 EAR_HF+ 3.
2.7 Antenna Interface In order to send or receive data connect an external RF antenna to the SMA connector which is internally connected to the RF signal of the GSM module. Please consider that the recommended antenna equipment has been chosen to achieve optimum RF performance when operating the Java Box Terminal.
2.10 IO Interface The following interfaces and functions are provided via the IO interface connector.
3. GPS 3.1 GPS Antenna Requirements The GPS module is not provided with an internal LNA amplifier. The use of an active antenna is important to achieve a good performance. The module is provided of an Antenna supply circuit. As suggested on the Product Description the external active antenna for a GPS device shall fulfill the following requirements: ANTENNA REQUIREMENTS Frequency range Bandwidth Gain Impedance Amplification Supply voltage Current consumption 1575.42 MHz (GPS L1) +- 1.023 MHz 1.
5. ACCSESSORIES 5.1 24 pins Interface Connector This chapter provides specifications for the 24-pin IO interface connector which serves the GPIO interfaces of the Terminal. The type of the receptacle assembled on the JAVA BOX Terminal is 24 pin Micro Mate-N-LOK 3mm from MOLEX. Mating headers can be chosen from the MOLEX Micro Mate-N-LOK Series. For latest product information http://www.molex.com 5.2 Power Supply This chapter provides specifications for the power supply which serves the Terminal.
6. SAFETY RECOMMANDATIONS READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and has to be avoided in the following areas: Where it can interfere with other electronic devices in environments such as hospitals, airports, aircrafts, etc.
7. JAVA BOX GPS Options This chapter provides options that can be use on the JAVA BOX GPS. 7.1 Battery Source Power 7.1.1 Battery Power Single 3.7V LIPO cell battery type is use for supplying the power to the JAVA BOX The battery capacity 900mAh. 7.1.
