Telit Wireless Solutions 1vv0300773a Serial Ports, Modem Serial Port Modem Serial Port 2 Debug

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GE863-PRO3Hardware User Guide

1vv0300773a Rev. 0 - 24/01/08

7 Serial Ports

The serial port on the Telit GE863-PRO3is the core of the interface between the module engine and the ARM processor.

2 serial ports are available on the module engine:

•MODEM SERIAL PORT

•MODEM SERIAL PORT 2 (DEBUG)

6+1(DBG) serial ports are available on the ARM part.

No direct connection is present between the two parts, on the hosting PCB the two serial ports need to be interconnected. It is up to the user to select whatever serial port is most suited on the ARM part to exchange data with the GSM/GPRS engine; however the USART0 port on the ARM is the only supporting the full RS232 line signaling and should be preferred.

In the ball-out of the GE863-PRO3the balls of the MODEM SERIAL port and ARM USART0 are placed one next the other, allowing an easy routing of the connection.

7.1 MODEM SERIAL PORT

Several configurations can be designed for the serial port on the OEM hardware, but the most common are:

•RS232 PC com port

•microcontroller UART @ 2.8V – 3.1V (Universal Asynchronous Receive Transmit)

Depending from the type of serial port on the OEM hardware a level translator circuit may be needed to make the system work. The only configuration that doesn't need a level translation is the 2.8V – 3.1V UART and hence the GE863-PRO3GSM/GPRS engine can be directly connected with the ARM serial port @ 3.1V CMOS.

The serial port on the GE863-PRO3GSM/GPRS engine is a +2.8V UART with all the 7 RS232 signals, While the serial ports on the ARM part are +3.1V UART.

GE863-PRO3serial ports differ from the PC-RS232 in the signal polarity (RS232 is reversed) and levels.

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Contents GE863-PRO3Hardware User Guide Contents GE863-PRO 3 Hardware User Guide This document is relating to the following products Disclaimer Overview GE863-PRO3Mechanical Dimensions Telit GE863-PRO3module overall dimension areLength 41,4 mm Width 31,4 mm Thickness 3,6 mm GE863-PRO3module connections D10 GND D11 Simvcc D12 Simclk E1 GND E2 Pwrmon DTE GPIO7 / Rftxdisable GSMC2 Vbatt C3 Vrtc C11 Simrst C12 Simio D1 Charge D2 VAUX1ON/OFF*-AP Nrst Reset ARMPB8 PB9PB7 PB0PB2 PB1PA3 HdmbXIN32 XOUT32Reserved GND VBATT2Balls Layout ARM PIO Controller a multiplexing ARM Port IO multiplexingARM PIO Controller B multiplexing ARM PIO Controller C multiplexing Turning on the GE863-PRO3GSM/GPRS Engine Hardware Commands+1,8/5 10kHardware Unconditional Reboot of GSM/GPRS Engine 2Turning OFF the GE863-PRO3GSM/GPRS EngineHardware shutdown Turning ON/OFF the GE863-PRO3ARM ON/OFF*-AP # GND AT+CFUN=4 Power SupplyGSM Power Supply Requirements AT+CFUN=1Vrtc Backup supply ARM Power Supply Requirements817A19A Seiko General Design RulesElectrical design Guidelines Suggested circuit is1.1 + 5V input Source Power Supply Design Guidelines 1.2 + 12V input Source Power Supply Design Guidelines Battery Source Power Supply Design Guidelines Battery Charge control Circuitry Design Guidelines GE863-PRO3Hardware User Guide Thermal Design Guidelines Power Supply PCB layout Guidelines GSM Antenna Requirements Antenna50 ohm GSM Antenna PCB line GuidelinesElectro Magnetic Interference Guidelines GSM Antenna installation GuidelinesLogic level specifications Absolute Maximum Ratings -Not Functional Parameter Min MaxOperating Range Interface levels Cmos Level Min Max Operating Range Interface levels Cmos Vrtc Level Min Max GSM Gpio Current characteristics Level TypicalCmos 3.1V Current characteristics Level Typical Cmos 1.8V-A Current characteristics Level TypicalSignal Function Phone resetSignal Min Max Modem Serial Port Modem Serial Port 2 Debug Serial PortsSignals of the GE863-PRO3GSM/GPRS engine serial port are RS232 level translation An example of level translation circuitry of this kind is GE863-PRO3Hardware User Guide Audio Section Overview Short description Input Lines MicrophoneMicmt 1st differential microphone path Input Lines CharacteristicsOutput Lines Speaker Earmt Differential Line-out Drivers Path Output Lines CharacteristicsEvaluation Kit for Telit GE863- PRO3 Modules ON/OFF 10 GSM/GPRS General Purpose I/O10.4Using the Rftxmon Output GPIO3 Using a Gpio Pad as InputUsing a Gpio Pad as Output Using the RF Transmission Control GPIO7Using the Buzzer Output GPIO4 Using the Alarm Output10.7Indication of network service availability LED statusDevice Status 10.9VAUX1 power output Operating Range VAUX1 power supplyRTC Bypass out PCB pad Design Mounting the GE863-PRO3on the Application Board11.1General StencilSolder paste Following is the recommended solder reflow profile 11.1.4 GE863-PRO3Solder Reflow3C/second max Section A-A Packing SystemModules orientation on tray Moisture Sensibility Conformity Assessment Issues Safety Recommandations Revision Date Changes Document Change Log

1vv0300773a specifications

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The module is equipped with a powerful ARM Cortex-M3 processor, which enables efficient data processing and facilitates complex computations required for many IoT applications. Additionally, it features a comprehensive set of interfaces, including UART, GPIO, and I2C, enabling easy integration with various sensors and peripherals. This modularity ensures that developers can customize their applications based on specific business needs.

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In summary, Telit Wireless Solutions 1VV0300773A offers a blend of advanced features, robust technologies, and essential characteristics tailored for the rapidly evolving IoT landscape. Its combination of multi-network support, secure communication, and efficient processing makes it a standout choice for developers and enterprises looking to enhance their connectivity solutions.
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