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GE864-AUTO Hardware User Guide

1vv0300779 Rev.0 - 20/06/08

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Содержание GE864-AUTO

Страница 1: ...GE864 AUTO Hardware User Guide 1vv0300779 Rev 0 20 06 08...

Страница 2: ...er Guide 1vv0300779 Rev 0 20 06 08 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 2 of 62 This document is relating to the following products...

Страница 3: ...General Design Rules 20 5 2 1 Electrical Design Guidelines 20 5 2 1 1 5V input Source Power Supply Design Guidelines 20 5 2 1 2 12V input Source Power Supply Design Guidelines 21 5 2 1 3 Battery Sourc...

Страница 4: ...ing the Buzzer Output GPIO7 47 10 8 Indication of network service availability 48 10 9 RTC Bypass out 49 10 10 External 32KHz oscillator 49 11 ADC section 51 11 1 ADC Converter 51 11 1 1 Description 5...

Страница 5: ...he foregoing Telit does not make any warranty as to the information contained herein and does not accept any liability for any injury loss or damage of any kind incurred by use of or reliance upon the...

Страница 6: ...SM GPRS GE864 AUTO cellular module within user application shall be done according to the design rules described in this manual IT L integrazione del modulo cellulare GSM GPRS GE864 AUTO all interno d...

Страница 7: ...20 06 08 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 7 of 62 2 GE864 AUTO Mechanical Dimensions The Telit GE864 AUTO module overall dimensi...

Страница 8: ...nal Clock 1 8 3V C11 SIMIN I External SIM signal Presence active low 47K 1 8 3V D4 SIMVCC External SIM signal Power supply for the SIM 1 8 3V D10 SIMIO I O External SIM signal Data I O 1 8 3V E9 SIMRS...

Страница 9: ...ammer detect report CMOS 2 8V H5 TGPIO_02 PCM_WAO I O Telit GPIO02 Configurable GPIO PCM audio CMOS 2 8V K7 TGPIO_03 PCM_RX I O Telit GPIO03 Configurable GPIO PCM audio CMOS 2 8V B3 TGPIO_04 I O Telit...

Страница 10: ...s S p A written authorization All Rights Reserved page 10 of 62 Ball Signal I O Function Internal PULL UP Type A11 GND Ground Power F11 GND Ground Power L11 GND Ground Power RESERVED A3 A4 A5 A6 A7 A8...

Страница 11: ...Internal PULL UP Type G5 G6 G7 H4 H6 H7 J4 J6 J7 K9 K10 K11 L5 L7 L10 Ref to Digital Voice Interface Application Note 80000NT10004a NOTE RESERVED pins must not be connected NOTE If not used almost all...

Страница 12: ...IIC_SDA_ HW VRTC GND VBATT VBATT GND 3 TGPIO_04 32K_IN TGPIO_08 PCM_TX GND GND GND 4 SIMVCC GND Antenna 5 TGPIO_06 ALARM TGPIO_02 PCM_WAO ON_OFF GND 6 C125 RING GND TGPIO_01 JDR C106 CTS GND GND 7 C10...

Страница 13: ...S p A written authorization All Rights Reserved page 13 of 62 AUDIO Signals balls SIM CARD interface balls TRACE Signals balls Prog data Hw Flow Control signals balls IIC DAC and ADC signals balls MIS...

Страница 14: ...t to do it is NOTE don t use any pull up resistor on the ON line it is internally pulled up Using pull up resistor may bring to latch up problems on the GE864 AUTO power regulator and improper power o...

Страница 15: ...ommunications S p A written authorization All Rights Reserved page 15 of 62 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...

Страница 16: ...equest that informs the network that the device will not be reachable any more 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 T...

Страница 17: ...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 TIP The uncond...

Страница 18: ...he product overall performances hence read carefully the requirements and the guidelines that will follow for a proper design 5 1 Power Supply Requirements POWER SUPPLY Nominal Supply Voltage 3 8V Max...

Страница 19: ...n power level 78 1 Max power level 200 1 GSM Sending data mode GPRS class 10 TX and RX mode Min power level 123 7 Max power level 370 8 GPRS Sending data mode The GSM system is made in a way that the...

Страница 20: ...2 1 1 5V input Source Power Supply Design Guidelines The desired output for the power supply is 3 8V hence there s not a big difference between the input source and the desired output and a linear re...

Страница 21: ...regulator to respond quickly to the current peaks absorption In any case the frequency and Switching design selection is related to the application to be developed due to the fact the switching frequ...

Страница 22: ...0300779 Rev 0 20 06 08 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 22 of 62 An example of switching regulator with 12V input is in the belo...

Страница 23: ...AUTO and damage it NOTE DON T USE any Ni Cd Ni MH and Pb battery types directly connected with GE864 AUTO Their use can lead to overvoltage on the GE864 AUTO and damage it USE ONLY Li Ion battery type...

Страница 24: ...nt significantly only during calls If we assume that the device stays into transmission for short periods of time let s say few minutes and then remains for a quite long time in idle let s say one hou...

Страница 25: ...current peaks frequency of 216 Hz that will reflect on all the components connected to that supply introducing the noise floor at the burst base frequency For this reason while a voltage drop of 300 4...

Страница 26: ...shall fulfill the following requirements ANTENNA REQUIREMENTS Frequency range Depending by frequency band s provided by the network operator the customer shall use the most suitable antenna for that...

Страница 27: ...odule must not exceed 3dBi gain for mobile and fixed operating configurations 6 2 GSM Antenna PCB line Guidelines Ensure that the antenna line impedance is 50 ohm Keep the antenna line on the PCB as s...

Страница 28: ...llation 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...

Страница 29: ...te Maximum Ratings Not Functional Parameter Min Max Input level on any digital pin when on 0 3V 3 6V Input voltage on analog pins when on 0 3V 3 0 V Voltage on Buffered pins 0 3V 25V Operating Range I...

Страница 30: ...used to normally shutting down the device but only as an emergency exit in the rare case the device remains stuck waiting for some network response The RESET is internally controlled on start up to a...

Страница 31: ...oller UART 5V or other voltages different from 2 8V 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 t...

Страница 32: ...K3 Ground ground 6 DSR dsr_uart E11 Data Set Ready Output from the GE864 AUTO that indicates the module is ready 7 RTS rts_uart F7 Request to Send Input to the GE864 AUTO that controls the Hardware fl...

Страница 33: ...evel translator from the 0 3V UART level to the RS232 level while the receiver is the translator from RS232 level to 0 3V UART In order to translate the whole set of control lines of the UART you will...

Страница 34: ...duction forbidden without Telit Communications S p A written authorization All Rights Reserved page 34 of 62 An example of level translation circuitry of this kind is The RS232 serial port lines are u...

Страница 35: ...ent from 2 8 3V then a circuitry has to be provided to adapt the different levels of the two set of signals As for the RS232 translation there are a multitude of single chip translators For example a...

Страница 36: ...TO input lines connected to open collector outputs in order to avoid latch up problems on the GE864 AUTO Care must be taken to avoid latch up on the GE864 AUTO and the use of this output line to power...

Страница 37: ...lines is suited for hands free function car kit These two blocks can be active only one at a time selectable by AXE hardware line or by AT command The audio characteristics are equivalent in transmit...

Страница 38: ...ction car kit TIP being the microphone circuitry the more noise sensitive its design and layout must be done with particular care Both microphone paths are balanced and the OEM circuitry should be bal...

Страница 39: ...crophone nominal sensitivity 45 dBVrms Pa Analog gain suggested 20dB Echo canceller type Handset MIC_HF 2nd differential microphone path Line Coupling AC Line Type Balanced Coupling capacitor 100nF Di...

Страница 40: ...amplifier or directly a 16 earpiece at 12dBFS the EAR_HF lines EPPA1_2 and EPPA2 are the Fully Differential Power Buffers they can directly drive a 16 speaker in differential balanced or single ended...

Страница 41: ...dth 150 4000 Hz 3 dB Differential output voltage 328mVrms 16 12dBFS SW volume level step 2 dB Number of SW volume steps 10 EAR_HF Power Buffers Path Line Coupling DC Line Type Bridged Output load resi...

Страница 42: ...urable GPIO CMOS 2 8V 1uA 1mA INPUT HIGH see Fig 01 Alternate function ALARM E6 TGPIO_01 I O GPIO01 Configurable GPIO CMOS 2 8V 1uA 1mA INPUT x Alternate function JDR H3 TGPIO_08 I O GPIO08 Configurab...

Страница 43: ...Hardware User Guide 1vv0300779 Rev 0 20 06 08 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 43 of 62 Fig 01 ch1 ON_OFF 2sec ch2 GPIO 06 bis...

Страница 44: ...used in the GE864 AUTO interface circuits Absolute Maximum Ratings Not Functional Parameter Min Max Input level on any digital pin when on 0 3V 3 6V Input voltage on analog pins when on 0 3V 3 0 V Ope...

Страница 45: ...ected with the GPIO input pad has interface levels different from the 2 8V CMOS then it can be buffered with an open collector transistor with a 47K pull up to 2 8V 10 3 Using a GPIO Pad as OUTPUT The...

Страница 46: ...set as GPIO in output the read command AT GPIO 5 2 returns GPIO 2 0 as the GPIO is in alternate mode 1 TXMON is set in alternate mode and the Timer unit controls its state TXMON goes high 200 s before...

Страница 47: ...completely turn off either the application and the GE864 AUTO during sleep periods dramatically reducing the sleep consumption to few A In battery powered devices this feature will greatly improve th...

Страница 48: ...etwork 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...

Страница 49: ...y 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 crysta...

Страница 50: ...llator is shown in figure 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...

Страница 51: ...nput Voltage range 0 2 Volt AD conversion 11 bits Resolution 1 mV 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...

Страница 52: ...authorization All Rights Reserved page 52 of 62 11 2 Mounting the GE864 AUTO on your Board 11 2 1 General The Telit GE864 AUTO modules have been designed in order to be compliant with a standard lead...

Страница 53: ...e User Guide 1vv0300779 Rev 0 20 06 08 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 53 of 62 11 2 3 Recommended foot print for the applicati...

Страница 54: ...seen 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 Depending...

Страница 55: ...ad design Non solder mask defined NSMD type is recommended for the solder pads on the PCB Recommendations for PCB pad dimensions Ball pitch mm 2 5 Solder resist opening diameter A mm 1 150 Metal pad d...

Страница 56: ...faces Finish Layer thickness m Properties Electro less Ni Immersion Au 3 7 0 05 0 15 good solder ability protection high shear force values The PCB must be able to resist the higher temperatures which...

Страница 57: ...erature Max Tsmax Time min to max ts 150 C 200 C 60 180 seconds Tsmax to TL Ramp up Rate 3 C second max Time maintained above Temperature TL Time tL 217 C 60 150 seconds Peak Temperature Tp 245 0 5 C...

Страница 58: ...All Rights Reserved page 58 of 62 11 3 Packing system The Telit GE864 modules are packaged on trays of 20 pieces each This is especially suitable for the GE864 according to SMT processes for pick plac...

Страница 59: ...ns S p A written authorization All Rights Reserved page 59 of 62 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 wi...

Страница 60: ...der to satisfy the essential requisite of the R TTE 99 5 EC directive the GE864 AUTO module is compliant with the following standards GSM Radio Spectrum Standard EN 301 511 and 3GPP 51 010 1 EMC Elect...

Страница 61: ...have to be taken for the SIM checking carefully the instruction for its use Do not insert or remove the SIM when the product is in power saving mode The system integrator is responsible of the functi...

Страница 62: ...0 20 06 08 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 62 of 62 14 Document Change Log R Re ev vi is si io on n D Da at te e C Ch ha an ng...

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