Telit Wireless Solutions GE864-AUTO Hardware User's Manual
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Telit Wireless Solutions GE864-AUTO Hardware User's Manual

Telit Wireless Solutions GE864-AUTO Hardware User's Manual

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GE864-AUTO Hardware User Guide
1vv0300779 Rev.0 - 20/06/08

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Summary of Contents for Telit Wireless Solutions GE864-AUTO

  • Page 1 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08...
  • Page 2 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 This document is relating to the following products: GE864-AUTO 3990250701 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 2 of 62...

  • Page 3: Table Of Contents

    GE864-AUTO Mechanical Dimensions ................7 GE864-AUTO module connections .................8 PIN-OUT...........................8 3.1.1 BGA Balls Layout........................... 12 Hardware Commands ....................14 Turning ON the GE864-AUTO module ................14 Turning OFF the GE864-AUTO ....................16 4.2.1 Hardware shutdown........................16 4.2.2 Hardware Unconditional Restart....................16 Power Supply .........................18 Power Supply Requirements ....................18...
  • Page 4 ADC Converter ........................51 11.1.1 Description ............................. 51 11.1.2 Using ADC Converter ........................51 11.2 Mounting the GE864-AUTO on your Board ..............52 11.2.1 General ............................52 11.2.2 Module finishing & dimensions ...................... 52 11.2.3 Recommended foot print for the application (GE864) ..............53 11.2.4...
  • Page 5 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 DISCLAIMER The information contained in this document is the proprietary information of Telit Communications S.p.A. and its affiliates (“TELIT”). The contents are confidential and any disclosure to persons other than the officers, employees, agents or subcontractors of the owner or licensee of this document, without the prior written consent of Telit, is strictly prohibited.

  • Page 6: Overview

    For further hardware details that may not be explained in this document refer to the Telit GE864-AUTO Product Description document where all the hardware information is reported.

  • Page 7: Ge864-Auto Mechanical Dimensions

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 2 GE864-AUTO Mechanical Dimensions Telit GE864-AUTO module overall dimension are: • Length: 30 mm • Width: 30 mm • Thickness: 2.8 mm Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...

  • Page 8: Ge864-Auto Module Connections

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 3 GE864-AUTO module connections 3.1 PIN-OUT Ball Signal Function Internal PULL UP Type Audio Handsfree switching 100K CMOS 2.8V Handsfree mic. input; phase +, nom. level MIC_HF+ Audio 3mVrms Handset mic.signal input; phase-, nom. level...
  • Page 9 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 Ball Signal Function Internal PULL UP Type DAC and ADC ADC_IN1 Analog/Digital converter input ADC_IN2 Analog/Digital converter input ADC_IN3 Analog/Digital converter input Miscellaneous Functions RESET* Reset input STAT_LED Status indicator led CMOS 1.8V...
  • Page 10 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 Ball Signal Function Internal PULL UP Type Ground Power Ground Power Ground Power RESERVED Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 10 of 62...
  • Page 11 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 Ball Signal Function Internal PULL UP Type * Ref. to Digital Voice Interface Application Note 80000NT10004a. NOTE: RESERVED pins must not be connected NOTE: If not used, almost all pins should be left disconnected. The only exceptions are the following...

  • Page 12: Bga Balls Layout

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 3.1.1 BGA Balls Layout TOP VIEW IIC_SCL_ VBATT VBATT IIC_SDA_ RESET* VRTC VBATT VBATT TGPIO_08 TGPIO_04 32K_IN / PCM_TX SIMVCC Antenna TGPIO_06 TGPIO_02 / ON_OFF* / ALARM PCM_WAO TGPIO_01 C106 / C125/RING...
  • Page 13 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 AUDIO Signals balls SIM CARD interface balls TRACE Signals balls Prog. / data + Hw Flow Control signals balls DAC and ADC signals balls MISCELLANEOUS functions signals balls TELIT GPIO balls POWER SUPPLY VBATT balls...

  • Page 14: Hardware Commands

    4.1 Turning ON the GE864-AUTO module To turn on the GE864-AUTO the pad ON* must be tied low for at least 1 seconds and then released. The maximum current that can be drained from the ON* pad is 0,1 mA.
  • Page 15 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 For example: 1- Let's assume you need to drive the ON* pad with a totem pole output from +1.8V up to 5V microcontroller (uP_OUT1): +1.8V ... 5V 2- Let's assume you need to drive the ON* pad directly with an ON/OFF button: Reproduction forbidden without Telit Communications S.p.A.

  • Page 16: Turning Off The Ge864-Auto

    4.2.1 Hardware shutdown To turn OFF the GE864-AUTO the pad ON* must be tied low for at least 2 seconds and then released. The same circuitry and timing for the power on shall be used.
  • Page 17 NOTE: don't use any pull up resistor on the RESET* line nor any totem pole digital output. Using pull up resistor may bring to latch up problems on the GE864-AUTO power regulator and improper functioning of the module. The line RESET* must be connected only in open collector configuration.

  • Page 18: Power Supply

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 5 Power Supply The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product overall performances, hence read carefully the requirements and the guidelines that will follow for a proper design.
  • Page 19 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 The GE864-AUTO power consumptions are: GE864-AUTO Mode Average (mA) Mode description IDLE mode Stand by mode; no call in progress AT+CFUN=1 23,9 Normal mode: full functionality of the module Disabled TX and RX; module is not registered on the...

  • Page 20: General Design Rules

    Make sure the low ESR capacitor on the power supply output (usually a tantalum one) is rated at least 10V. • A protection diode should be inserted close to the power input, in order to save the GE864-AUTO from power polarity inversion. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...

  • Page 21: Input Source Power Supply Design Guidelines

    • A protection diode should be inserted close to the power input, in order to save the GE864-AUTO from power polarity inversion. This can be the same diode as for spike protection. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 22 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 An example of switching regulator with 12V input is in the below schematic (it is split in 2 parts): Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 22 of 62...

  • Page 23: Battery Source Power Supply Design Guidelines

    Make sure the low ESR capacitor (usually a tantalum one) is rated at least 10V. • A protection diode should be inserted close to the power input, in order to save the GE864-AUTO from power polarity inversion. Otherwise the battery connector should be done in a way to avoid polarity inversions when connecting the battery.

  • Page 24: Thermal Design Guidelines

    For the heat generated by the GE864-AUTO, you can consider it to be during transmission 1W max during CSD/VOICE calls and 2W max during class10 GPRS upload.

  • Page 25: Power Supply Pcb Layout Guidelines

    PCB trace from the capacitor to the GE864-AUTO is wide enough to ensure a dropless connection even during the 2A current peaks.

  • Page 26: Antenna

    In the case that the antenna is not directly developed on the same PCB, hence directly connected at the antenna pad of the GE864-AUTO, then a PCB line is needed in order to connect with it or with its connector.

  • Page 27: Gsm Antenna - Pcb Line Guidelines

    Ground planes, or shield it with a metal frame cover. • If you don't have EM noisy devices around the PCB of GE864-AUTO, by using a strip-line on the superficial copper layer for the antenna line, the line attenuation will be lower than a buried one;...

  • Page 28: Gsm Antenna - Installation Guidelines

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 6.3 GSM Antenna - Installation Guidelines • Install the antenna in a place covered by the GSM signal. • The Antenna 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;...

  • Page 29: Logic Level Specifications

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 7 Logic level specifications Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. The following table shows the logic level specifications used in the Telit GE864-AUTO interface circuits:...

  • Page 30: Reset Signal

    Whenever this signal is pulled low, the GE864-AUTO is reset. When the device is reset it stops any operation. After the release of the reset GE864-AUTO is unconditionally shut down, without doing any detach operation from the network where it is registered.

  • Page 31: Serial Ports

    The only configuration that doesn't need a level translation is the 2.8V UART. The serial port on the GE864-AUTO is a +2.8V UART with all the 7 RS232 signals. It differs from the PC-RS232 in the signal polarity (RS232 is reversed) and levels. The levels for the GE864-AUTO...
  • Page 32 NOTE: According to V.24, RX/TX signal names are referred to the application side, therefore on the GE864 side these signal are on the opposite direction: TXD on the application side will be connected to the receive line (here named TXD/ rx_uart ) of the GE864-AUTO serial port and viceversa for RX.

  • Page 33: Rs232 Level Translation

    1vv0300779 Rev.0 - 20/06/08 8.2 RS232 level translation In order to interface the Telit GE864-AUTO with a PC com port or a RS232 (EIA/TIA-232) application a level translator is required. This level translator must invert the electrical signal in both directions change the level from 0/3V to +15/-15V Actually, the RS232 UART 16450, 16550, 16650 &...
  • Page 34 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 An example of level translation circuitry of this kind is: The RS232 serial port lines are usually connected to a DB9 connector with the following layout: Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...

  • Page 35: Uart Level Translation

    TIP: This logic IC for the level translator and 2.8V pull-ups (not the 5V one) can be powered directly from PWRMON line of the GE864-AUTO. Note that the TC7SZ07AE has open drain output, therefore the resistor R2 is mandatory. Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved...
  • Page 36 1vv0300779 Rev.0 - 20/06/08 NOTE: The UART input line TXD (rx_uart) of the GE864-AUTO is NOT internally pulled up with a resistor, so there may be the need to place an external 47KΩ pull-up resistor, either the DTR (dtr_uart) and RTS (rts_uart) input lines are not pulled up internally, so an external pull-up resistor of 47KΩ...

  • Page 37: Audio Section Overview

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 9 Audio Section Overview The Base Band Chip of the GE864-AUTO Telit Module provides two different audio blocks; both in transmit (Uplink) and in receive (Downlink) direction: “MT lines” should be used for handset function, “HF lines”...

  • Page 38: Input Lines (Microphone)

    9.1 INPUT LINES (Microphone) 9.1.1 Short description The Telit GE864-AUTO provides two audio paths in transmit section. Only one of the two paths can be active at a time, selectable by AXE hardware line or by AT command. You must keep in mind the different audio characteristics of the transmit blocks when designing: The “MIC_MT”...

  • Page 39: Input Lines Characteristics

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 9.1.2 Input Lines Characteristics “MIC_MT” 1st differential microphone path Line Coupling Line Type Balanced Coupling capacitor ≥ 100nF Differential input resistance 50kΩ Differential input voltage ≤ 1,03V (365mV Microphone nominal sensitivity -45 dBV...

  • Page 40: 1Vv0300779 Rev.0

    9.2 OUTPUT LINES (Speaker) 9.2.1 Short description The Telit GE864-AUTO provides two audio paths in receive section. Only one of the two paths can be active at a time, selectable by AXE hardware line or by AT command. You must keep in mind the different audio characteristics of the receive blocks when designing: the “EAR_MT”...

  • Page 41: Output Lines Characteristics

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 9.2.2 Output Lines Characteristics “EAR_MT” Differential Line-out Drivers Path Line Coupling Line Type Bridged Output load resistance ≥ 14 Ω Internal output resistance 4 Ω (typical) Signal bandwidth 150 – 4000 Hz @ -3 dB Differential output voltage 328mVrms /16 Ω...

  • Page 42: General Purpose I/O

    GE864-AUTO firmware and acts depending on the function implemented. For Logic levels please refer to chapter 7.
  • Page 43 GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 ch1: ON_OFF (2sec) ch2: GPIO 06 [ bis ] GE864-AUTO Fig.01 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 43 of 62...

  • Page 44: Gpio Logic Levels

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 10.1 GPIO Logic levels Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. GE864-AUTO The following table shows the logic level specifications used in the interface circuits:...

  • Page 45: Using A Gpio Pad As Input

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 10.2 Using a GPIO Pad as INPUT The GPIO pads, when used as inputs, can be connected to a digital output of another device and report its status, provided this device has interface levels compatible with the 2.8V CMOS levels of the GPIO.

  • Page 46: Using The Rftxmon Output Gpio5

    1vv0300779 Rev.0 - 20/06/08 10.5 Using the RFTXMON Output GPIO5 The GPIO5 pin, when configured as RFTXMON Output, is controlled by the GE864-AUTO module and will rise when the transmitter is active and fall after the transmitter activity is completed.

  • Page 47: Using The Alarm Output Gpio6

    1vv0300779 Rev.0 - 20/06/08 10.6 Using the Alarm Output GPIO6 The GPIO6 pad, when configured as Alarm Output, is controlled by the GE864-AUTO module and will rise when the alarm starts and fall after the issue of a dedicated AT command.

  • Page 48: Indication Of Network Service Availability

    10.8 Indication of network service availability The STAT_LED pin status shows information on the network service availability and Call status. In the GE864-AUTO modules, the STAT_LED usually needs an external transistor to drive an external LED. Therefore, the status indicated in the following table is reversed with respect to the pin status.

  • Page 49: Rtc Bypass Out

    NO Devices must be powered from this pin. 10.10 External 32KHz oscillator The GE864-AUTO has an internal 32.768 KHz oscillator for ‘power saving’ and ‘Real Time Clock’ features. A common 32.768 KHz crystal is not reliable for ‘automotive’ applications.
  • Page 50 AUTO Clock Oscillator 32.768KHz The Clock Oscillator should be placed close to GE864-AUTO. The AT command used to test the presence and the status of an external 32KHz oscillator is #OSC32KHZ Refer to SW User Guide or AT Commands Reference Guide for the full description of this function.

  • Page 51: Adc Section

    Resolution The GE864-AUTO module provides 3 Analog to Digital Converters. The input lines are: ADC_IN1 available on Ball J11 and Pin 19 of PL102 on EVK2 Board (CS1302). ADC_IN2 available on Ball H11 and Pin 20 of PL102 on EVK2 Board (CS1302).

  • Page 52: Mounting The Ge864-Auto On Your Board

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 11.2 Mounting the GE864-AUTO on your Board 11.2.1 General Telit GE864-AUTO modules have been designed in order to be compliant with a standard lead-free SMT process. 11.2.2 Module finishing & dimensions Pin A1...

  • Page 53: Recommended Foot Print For The Application (Ge864)

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 11.2.3 Recommended foot print for the application (GE864) Top View Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 53 of 62...

  • Page 54: Debug Of The Ge864 In Production

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 11.2.4 Debug of the GE864 in production To test and debug the mounting of the GE864, we strongly recommend to foreseen test pads on the host PCB, in order to check the connection between the GE864 itself and the application and to test the performance of the module connecting it with an external computer.

  • Page 55: Pcb Pad Design

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 11.2.6 PCB pad design Non solder mask defined” (NSMD) type is recommended for the solder pads on the PCB. Recommendations for PCB pad dimensions Ball pitch [mm] Solder resist opening diameter A [mm]...

  • Page 56: Solder Paste

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 Holes in pad are allowed only for blind holes and not for through holes. Recommendations for PCB pad surfaces: Finish Layer thickness [µm] Properties Electro-less Ni / 3 –7 / good solder ability protection, high Immersion Au 0.05 –...

  • Page 57: Ge864 Solder Reflow

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 11.2.8 GE864 Solder reflow The following is the recommended solder reflow profile Profile Feature Pb-Free Assembly Average ramp-up rate (T to T 3°C/second max Preheat – Temperature Min (Tsmin) 150°C – Temperature Max (Tsmax) 200°C...

  • Page 58: Packing System

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 11.3 Packing system Telit GE864 modules are packaged on trays of 20 pieces each. This is especially suitable for the GE864 according to SMT processes for pick & place movement requirements. Section A-A The size of the tray is: 329 x 176mm NOTE: These trays can withstand at the maximum temperature of 65°...

  • Page 59: Ge864 Orientation On The Tray

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 11.3.1 GE864 orientation on the tray 11.3.2 Moisture sensibility The level of moisture sensibility of GE864 module is “3”, in according with standard IPC/JEDEC J-STD- 020, take care all the relatives requirements for using this kind of components.

  • Page 60: Conformity Assessment Issues

    1vv0300779 Rev.0 - 20/06/08 12 Conformity Assessment Issues The GE864-AUTO module is assessed to be conform to the R&TTE Directive as stand-alone products, so If the module is installed in conformance with Dai Telecom installation instructions require no further evaluation under Article 3.2 of the R&TTE Directive and do not require further involvement of a R&TTE Directive Notified Body for the final product.

  • Page 61: Safety Recommandations

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 13 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:...

  • Page 62: Document Change Log

    GE864-AUTO Hardware User Guide 1vv0300779 Rev.0 - 20/06/08 14 Document Change Log ISSUE#0 20/06/08 Release First ISSUE# 0 Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 62 of 62...

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