Telit Wireless Solutions GL865 V3 User Manual Download Page 43

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HW User Guide

1vv0301018 Rev. 15

Page

2019-01-07

LINE-IN connection

If the audio source is not a mike but a different device, the following connections can be

done.
Place a 1K

Ω

resistor to ground on the negative input, in order to get balanced the input;

than connect the source via 1uF capacitor, so the DC current is blocked.
Since the input is differential, the common mode voltage noise between the two (different)

grounds is rejected, provided that both AF_IN+ & AF_IN- are connected directly onto the

source.

220n

AF_IN+

MIC/AF_IN+

MIC/AF_IN-

AGND

MODULE

INPUT

ADC

Vmic

AF_IN-

220n

AF_IN+

MIC/AF_IN+

MIC/AF_IN-

AGND

MODULE

INPUT

ADC

Vmic

Remote_GND

Summary of Contents for GL865 V3

Page 1: ...01 2017 Mod 0805 2017 01 Rev 6 GL865 V3 V3 1 HW User Guide 1vv0301018 Rev 15 2019 01 07...

Page 2: ...pyrighted material including the exclusive right to copy reproduce in any form distribute and make derivative works of the copyrighted material Accordingly any copyrighted material of Telit and its li...

Page 3: ...IV Trademarks TELIT and the Stylized T Logo are registered in Trademark Office All other product or service names are the property of their respective owners V Third Party Rights The software may incl...

Page 4: ...HW User Guide 1vv0301018 Rev 15 Page 4 of 72 2019 01 07 APPLICABILITY TABLE PRODUCTS GL865 DUAL V3 GL865 QUAD V3 GL865 DUAL V3 1 GL865 QUAD V3 1...

Page 5: ...ION 8 Scope 8 Audience 8 Contact Information Support 8 Text Conventions 9 Related Documents 10 2 OVERVIEW 11 3 GL865 V3 V3 1 MECHANICAL DIMENSIONS 12 4 GL865 V3 V3 1 MODULE CONNECTIONS 13 PIN OUT 13 P...

Page 6: ...2 1 Transmission line design 32 7 2 2 Transmission line measurements 33 GSM Antenna Installation Guidelines 35 8 LOGIC LEVEL SPECIFICATIONS 36 Reset signal 37 9 SERIAL PORTS 38 MODEM SERIAL PORT 38 RS...

Page 7: ...e 55 ADC Converter 56 12 2 1 Description 56 12 2 2 Using ADC Converter 56 13 MOUNTING THE GL865 V3 V3 1 ON YOUR BOARD 57 General 57 Module finishing dimensions 57 Recommended foot print for the applic...

Page 8: ...port For general contact technical support services technical questions and report documentation errors contact Telit Technical Support at TS EMEA telit com TS AMERICAS telit com TS APAC telit com TS...

Page 9: ...or bodily injury may occur Caution or Warning Alerts the user to important points about integrating the module if these points are not followed the module and end user equipment may fail or malfunctio...

Page 10: ...ttings application note 80000NT10007a GL865 GL868 V3 Digital Voice Interface Application Note 80000NT10104a GL865 V3 V3 1 Product description 80400ST10120a SIM Integration Design Guide Application Not...

Page 11: ...shall be done according to the design rules described in this manual IT L integrazione del modulo cellulare GSM GPRS GL865 V3 V3 1 all interno dell applicazione dell utente dovr rispettare le indicaz...

Page 12: ...HW User Guide 1vv0301018 Rev 15 Page 12 of 72 2019 01 07 3 GL865 V3 V3 1 MECHANICAL DIMENSIONS The GL865 V3 V3 1 overall dimensions are Length 24 4 mm Width 24 4 mm Thickness 2 6 mm Weight 2 8 g...

Page 13: ...put CMOS 1 8V 4 C108 DTR GPI I Input for Data terminal ready signal DTR from DTE GP input 30K PU CMOS 1 8V 5 C105 RTS GPI I Input for Request to send signal RTS from DTE GP input 30K PU CMOS 1 8V 6 C1...

Page 14: ...tus LED 28K 40K PD CMOS 1 8V Power Supply 38 VBATT Main power supply Baseband Power 37 VBATT_PA Main power supply Radio PA Power 23 AGND AF Signal Ground see audio section AF Signal 32 GND Ground Powe...

Page 15: ...HW User Guide 1vv0301018 Rev 15 Page 15 of 72 2019 01 07 Pin Layout TOP VIEW NOTE The pins defined as NC RFU shall be considered RESERVED and must not be connected to any pin in the application...

Page 16: ...in will be at the high logic level and the module can be considered fully operating The following flow chart shows the proper turn on procedure NOTE The power supply must be applied either at the same...

Page 17: ...pins VBATT and VBATT_PA at the same time In this case all parts of the module are in OFF condition no power consumption is present Processor turn OFF disconnect the power supply only from the power p...

Page 18: ...e power off because it remains high Instead AT SYSHALT works in the same way as previous GL865 DUAL QUAD NOTE In order to prevent a back powering effect it is recommended to avoid having any HIGH logi...

Page 19: ...Refer to AT command reference guide Fast Sys Halt FASTSYSHALT in order to set up detailed AT command 5 3 1 Fast SYSHALT by Hardware The module provides an input to give to the FW of the module advance...

Page 20: ...here 80mA is a typical current during fast SYSHALT procedure 300ms is the typical time to execute the system halt and 0 5V is the minimum voltage margin from threshold of hardware reset NOTE Verify ca...

Page 21: ...d RESET must be tied low for at least 200 milliseconds and then released The maximum current that can be drained from the ON pad is 0 15 mA NOTE Do not use any pull up resistor on the RESET line nor a...

Page 22: ...estart procedure NOTE In order to prevent a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the GL865 V3 V3 1 when the module is power...

Page 23: ...V NOTE The Operating Voltage Range MUST never be exceeded care must be taken when designing the application s power supply section to avoid having an excessive voltage drop If the voltage drop is exc...

Page 24: ...5 200 DCS1800 PL0 140 GPRS class 10 2TX 3RX GPRS Sending data mode GSM900 PL5 300 DCS1800 PL0 250 The GSM system is made in a way that the RF transmission is not continuous but it is packed into burst...

Page 25: ...pply is 3 8V hence there s not a big difference between the input source and the desired output and a linear regulator can be used A switching power supply will not be suited because of the low drop o...

Page 26: ...elated to the application to be developed due to the fact the switching frequency could also generate EMC interferences For car PB battery the input voltage can rise up to 15 8V and this should be kep...

Page 27: ...attery types directly connected with GL865 V3 V3 1 Their use can lead to overvoltage on the GL865 V3 V3 1 and damage it USE ONLY Li Ion battery types A Bypass low ESR capacitor of adequate capacity mu...

Page 28: ...e current consumption hence varies significantly Considering the very low current during idle especially if Power Saving function is enabled it is possible to consider from the thermal point of view t...

Page 29: ...all the components connected to that supply introducing the noise floor at the burst base frequency For this reason while a voltage drop of 300 400 mV may be acceptable from the power loss point of v...

Page 30: ...used only for mobile and fixed application The antenna s used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co located or o...

Page 31: ...s facing directly the antenna line track The ground around the antenna line on PCB has to be strictly connected to the Ground Plane by placing vias every 2mm at least Place EM noisy devices as far as...

Page 32: ...s needed in this case A SMA female connector has been used to feed the line The interface board is realized on a FR4 4 layers PCB Substrate material is characterized by relative permittivity r 4 6 0 4...

Page 33: ...ibrated coaxial cable has been soldered at the pad corresponding to GL865 V3 V3 1 RF output a SMA connector has been soldered to the board in order to characterize the losses of the transmission line...

Page 34: ...1018 Rev 15 Page 34 of 72 2019 01 07 Line input impedance in Smith Chart format once the line has been terminated to 50 load is shown in the following figure Insertion Loss of G CPW line plus SMA conn...

Page 35: ...ll the antenna in a place covered by the GSM signal Antenna shall not be installed inside metal cases Antenna shall be installed also according to antenna manufacturer instructions Installation should...

Page 36: ...l specifications used in the GL865 V3 V3 1 interface circuits Absolute Maximum Ratings Not Functional Parameter Min Max Input level on any digital pin CMOS 1 8 when on 0 3V 2 1V Operating Range Interf...

Page 37: ...n emergency exit in the rare case the device remains stuck waiting for some network response The RESET is internally controlled on start up to achieve a proper power on reset sequence so there s no ne...

Page 38: ...voltages different from 1 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 that doesn t need a leve...

Page 39: ...that controls the Hardware flow control 8 CTS cts_uart 6 Clear to Send Output from the GL865 V3 V3 1 that controls the Hardware flow control 9 RI ri_uart 2 Ring Indicator Output from the GL865 V3 V3 1...

Page 40: ...ip level translator There are a multitude of them differing in the number of drivers and receivers and in the levels be sure to get a true RS232 level translator not a RS485 or other standards By conv...

Page 41: ...HW User Guide 1vv0301018 Rev 15 Page 41 of 72 2019 01 07 The RS232 serial port lines are usually connected to a DB9 connector with the following layout...

Page 42: ...tion we have to recall that the microphone is a sound to current transducer so the resistor turns the current into voltage and acts as a voltage source finally the resistor feeds the input in balanced...

Page 43: ...alanced the input than connect the source via 1uF capacitor so the DC current is blocked Since the input is differential the common mode voltage noise between the two different grounds is rejected pro...

Page 44: ...ommended When the EAR are feeding some electronic circuitry an R C filter is recommended TIP in order to get the maximum audio level at a given output voltage level dBspl Vrms the following breaking t...

Page 45: ...uide 1vv0301018 Rev 15 Page 45 of 72 2019 01 07 L C filtering for LOW impedance load R C filtering for HIGH impedance load EAR EAR TELIT MODULE OUTPUT DAC GND EAR EAR TELIT MODULE OUTPUT DAC GND HiZ C...

Page 46: ...al is converted to voltage on the 2 2K resistance from there on circuitry has to be routed in order to not pick up common mode noise beware of the return path ground 10 4 2 Output Lines EAR Line out O...

Page 47: ...t output current Default State ON_OFF state State during Reset Note 42 GPIO_01 I O Configurable GPIO CMOS 1 8V 1uA 1mA INPUT 0 0 Alternate function DVI_WA0 41 GPIO_02 I O Configurable GPIO CMOS 1 8V 1...

Page 48: ...n C108 DTR 5 GPI_F I Configurable GPI CMOS 1 8V 1uA 1mA INPUT 0 0 Alternate function C105 RTS 6 GPO_D O Configurable GPO CMOS 1 8V 1uA 1mA INPUT 0 0 Alternate function C106 CTS GPIO Logic levels Where...

Page 49: ...When set as outputs the pads have a push pull output and therefore the pull up resistor may be omitted Using the RF Transmission Control GPIO4 The GPIO4 pin when configured as RF Transmission Control...

Page 50: ...is controlled by the GL865 V3 V3 1 module and will drive a Buzzer driver with appropriate square waves This permits to your application to easily implement Buzzer feature with ringing tones or melody...

Page 51: ...is produced relative to the frequency applied Diaphragm movement 11 8 2 Frequency Behavior The frequency behavior represents the effectiveness of the reproduction of the applied signals Because perfor...

Page 52: ...ominal voltage without current limitation In other words it is not the peak current which could be twice or three times higher If driving circuitry does not support these peak values the SPL will neve...

Page 53: ...E Don t use the SIM IN function on the same pin where the GPIO function is enabled and vice versa RTC Bypass out The VRTC pin brings out the Real Time Clock supply which is separate from the rest of t...

Page 54: ...erate an analogue value based on a specific input in the range from 0 up to 1023 However an external low pass filter is necessary Min Max Units Voltage range filtered 0 1 8 Volt Range 0 1023 Steps The...

Page 55: ...DAC enable value value scale factor of the integrated output voltage 0 1023 10 bit precision it must be present if enable 1 Refer to SW User Guide or AT Commands Reference Guide for the full descripti...

Page 56: ...t word Min Max Units Input Voltage range 0 1 2 Volt AD conversion 10 bits Resolution 1 mV The GL865 V3 V3 1 module provides 2 Analog to Digital Converters The input lines are ADC_IN1 available on pin...

Page 57: ...ING THE GL865 V3 V3 1 ON YOUR BOARD General The GL865 V3 V3 1 modules have been designed to be compliant with a standard lead free SMT process Module finishing dimensions Pin 1 Lead free Alloy Surface...

Page 58: ...ested to consider on the application a 1 5 mm placement inhibited area around the module It is also suggested as common rule for an SMT component to avoid having a mechanical part of the application i...

Page 59: ...recommended footprint 1 1 we suggest a thickness of stencil foil 120 m PCB pad design Non solder mask defined NSMD type is recommended for the solder pads on the PCB Recommendations for PCB pad dimen...

Page 60: ...shear force values The PCB must be able to resist the higher temperatures which are occurring at the lead free process This issue should be discussed with the PCB supplier Generally the wettability o...

Page 61: ...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 Time within 5 C of actual Peak Temperature tp 1...

Page 62: ...commend foreseeing test pads on the host PCB in order to check the connection between the GL865 V3 V3 1 itself and the application and to test the performance of the module connecting it with an exter...

Page 63: ...9 01 07 14 PACKING SYSTEM Is possible to order in two packaging system Package on tray Package on reel Packing on tray The GL865 V3 V3 1 modules are packaged on trays of 40 pieces each These trays can...

Page 64: ...HW User Guide 1vv0301018 Rev 15 Page 64 of 72 2019 01 07...

Page 65: ...HW User Guide 1vv0301018 Rev 15 Page 65 of 72 2019 01 07 Packing on reel The GL865 V3 V3 1 can be packaged on reels of 200 pieces each See figure for module positioning into the carrier...

Page 66: ...HW User Guide 1vv0301018 Rev 15 Page 66 of 72 2019 01 07 14 2 1 Carrier tape detail 14 2 2 Carrier detail...

Page 67: ...uct inside of the dry bag must be 12 months from the bag seal date when stored in a non condensing atmospheric environment of 40 C 90 RH b Environmental condition during the production 30 C 60 RH acco...

Page 68: ...it accepter tout brouillage radio lectrique subi m me si le brouillage est susceptible d en compromettre le fonctionnement Wireless notice This equipment complies with FCC and IC radiation exposure li...

Page 69: ...properly labelled to identify the modules within the host device The certification label of the module shall be clearly visible at all times when installed in the host device otherwise the host device...

Page 70: ...efully 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 for the functioning of the final product therefore care...

Page 71: ...tage Par 4 1 Power consumption Par 6 2 Figures update Par 6 3 1 GSM Antenna Requirements Par 7 1 Footprint Par 13 3 Tray drawing Par 14 1 Conformity Assessment section for GL865 QUAD V3 Par 15 2 8 201...

Page 72: ...01 2017 Mod 0805 2017 01 Rev 6...

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