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GE864 QUAD ATEX Hardware User Guide

1. f S es iia d a EN EkK 8 a D E af k 1 A CR e P e j o 3 i l tions S p A written authorization All Rights Reserved Page 21 of 81 Reproduction forbidden without Telit Communica 9 2 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Turning OFF the GE864 QUAD ATEX The turning off of the device can be done in two ways e via AT command see Software User Guide AT SHDN e by tying low pin ON Either ways when the device issues a detach request to the network informing that the device will not be reachable any more To turn OFF the module 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 The device shuts down after the release of the ON pad SEENEN forbidden without Telit Communications S p A written authorization All Rights Reserved Page 22 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 The following flow chart shows the proper turnoff procedure P WRMON OFF or 15s timeout Delay 1 5s TIP To check if the device has been powered off the hardware line PWRMON must be monitored The device is powered off when PWRMON goes low NOTE In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the module when is powered OFF or duri
2. Moreover the S detone functionality could be implemented by the amplifier fitted between the transmit path and the receive path enabled at request in both modes em i TETERE tions S p A written authorization All Rights Reserved Page 49 of 81 ng Reproduction forbidden without Telit Communica Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 p Palanced SLN HS Fuly Diferential l l Eamiece Audio Amplifier EP NI AUDIO T SEG FON MIC P 1 HS Microphone MAIC Hd Baseband Audio Front End _ Balanced Ear HF EX F Single ended Fully Differential Audio Amplifier GA Ear HF CC Wir HF 2 MIR K id0nF H SEENEN hicrophone AUTO 2 SEG FON Single ended 1O0nF trafili shd GE864 QUAD ATEX Audio front end Reproduction ON without Telit Communications S p A written SCHEER All Rights Reserved Page 50 of 81 11 2 11 2 1 Reproduction forbidden without Telit Communica Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Electrical Characteristics 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 must be balanced designed to reduce the common mode noise typically generated on the ground plane However the customer can use the unbalanced circuitry for its
3. The VRTC pin brings out the Real Time Clock supply which is separate from the rest of the digital part allowing having only RTC going on when all the other parts of the device are off To this power output a backup capacitor can be added in order to increase the RTC autonomy during power off of the battery NO Devices must be powered from this pin 12 11 External SIM Holder Implementation Please refer to the related User Guide SIM Holder Design Guides 80000NT10001a SEENEN forbidden without Telit Communications S p A written authorization All Rights Reserved Page 61 of 81 13 13 1 13 1 1 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 DAC and ADC Converter DAC Converter Description i Internal eo po fope 7 e DAC Converter DAC_OUT Digital Analog converter output OO DA The GE864 QUAD ATEX module provides one Digital to Analog Converter The on board DAC is a 10 bit converter able to generate a analogue value based a specific input in the range from O up to 1023 However an external low pass filter is necessary Min Men LUntts Voltage range filtered 10 26 elt Range 10028 The precision is 10 bits so if we consider that the maximum voltage Is 2V the integrated voltage could be calculated with the following formula Integrated output voltage 2 value 1023 DAC OUT line must be integrated for example with a low band pass filter in order to ob
4. 80 C Temperatures outside the range 20 C 55 C might slightly deviate from ETSI specifications Storage and Non Operating 40 C 90 C Temperature Range Functional the module is able to make and receive voice calls data calls SMS and make GPRS traffic Note GE864 QUAD ATEX is certified as T4 device for Tamb lt 40 C and T5 for Tamb gt 40 C 7 1 ATEX temperature classification With the supply power compliant to 6 the GE864 QUAD ATEX is classified as ATEX component in the following class Ambient Temperature 40 C 40 C 40 C 80 C j H 4 o Gen ZE ied v sf kb 3 d E Ga i ii vg PP d r d j bh WER o Ka d e KI LR ke Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 36 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 8 Antenna The antenna connection and board layout design are the most important part in the full product design and they strongly reflect on the product overall performances hence read carefully and follow the requirements and the guidelines for a proper design 8 1 GSM Antenna Requirements As suggested on the Product Description the antenna for a Telit GE864 QUAD ATEX device shall fulfill the following requirements ANTENNA REQUIREMENTS Frequency range Depending by frequency bandlel provided by the network operator the customer shall us
5. Input Voltage range 0 2 Volt EE Using ADC Converter The AT command below is available to use the ADC function AT ADC 1 2 The read value Is expressed in mV Refer to SW User Guide or AT Commands Reference Guide for the full description of this function Eegeregie forbidden without Telit Communications S p A written SE All Rights Reserved Page 64 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 13 3 Debug of the GE864 QUAD ATEX in Production To test and debug the mounting of the GE864 QUAD ATEX we strongly recommend to foreseen test pads on the host PCB in order to check the connection between the GE864 QUAD ATEX itself and the application and to test the performance of the module connecting it with an external computer Depending by the customer application these pads include but are not limited to the following signals e Fei be J1 J2 K1 K2 VBATT Main power supply A1 A11 D F1 F11 L L11 Serial data output RXD to DTE mon Trove on enter 5 JOnrorF input command or scing over ON or OFF Vogue command Service pin shall be used to upgrade the module from ASC1 RX_AUX TX_AUX The pin shall be tied low to enable the H4 SERVICE feature only in case of a SW Update activity It is required for debug purpose to be connected to a test pad on the final application Reproduction forbidden without Telit Gommunicat one S p A written authorization All
6. p20 PESMB SOA 20A Do 21444 Tade FICF 1l00 150 H SWITCHING A ESULATCOR Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 6 3 1 3 Battery Source Power Supply Design Guidelines e The desired nominal output for the power supply is 3 8V and the maximum voltage allowed is 4 2V hence a single 3 7V Li lon cell battery type is suited for supplying the power to the Telit GE864 QUAD ATEX module The three cells Ni Cd or Ni MH 3 6 V Nom battery types or 4V PB types MUST NOT BE USED DIRECTLY since their maximum voltage can rise over the absolute maximum voltage for the GE864 QUAD ATEX and damage it WARNING DON T USE any Ni Cd Ni MH and Pb battery types directly connected with GE864 QUAD ATEX Their use can lead to overvoltage on the GE864 QUAD ATEX and damage it USE ONLY Li lon battery types e A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks a 100uF tantalum capacitor is usually suited e Make sure the low ESR capacitor usually a tantalum one is rated at least 10V e A protection diode should be inserted close to the power input in order to save the GE864 QUAD ATEX from power polarity inversion Otherwise the battery connector should be done in a way to avoid polarity inversions when connecting the battery e The battery capacity must be at least 500mAh in order to withstand the current peaks of 2A the suggested capacit
7. tions S p A written authorization All Rights Reserved Page 24 of 81 aa Reproduction forbidden without Telit Communica Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 The following flow chart shows the proper RESET procedure Delay 200ms Eeset LOW Reset HIGH N Delay Is NOTE In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the module when is powered OFF or during an ON OFF transition 4 SN i 7 TEL legen oT Lap im N he CEA La WR d K DNR p Ce ae Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 25 of 81 CR d _ Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 6 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 following requirements and guidelines for a proper design 6 1 Power Supply Requirements Nominal Supply Voltage 3 80 V Normal operating Voltage Range 3 40 V 4 20 V Extended operating Voltage Range 3 22 V 4 20 V TIP The supply voltage is directly measured between VBATT and GND balls It must stay within the Wide Supply Voltage tolerant range including any drop voltage and oversh
8. 1vv0300879 Rev 3 2011 04 06 Not all GPIO pads support all these three modes GPIO1 supports all three modes and can be input output Jamming Detect Output Alternate function GPIO4 supports all three modes and can be input output RF Transmission Control Alternate function GPIO5 supports all three modes and can be input output RFTX monitor output Alternate function GPIO6 supports all three modes and can be input output alarm output Alternate function GPIO7 supports all three modes and can be input output buzzer output Alternate function GPIO Logic Levels Where not specifically stated all the interface circuits work at 2 8V CMOS logic levels The following tables show the logic level specifications used in the GE864 QUAD ATEX interface circuits A Te Ka ion forbidden without Telit Communica Absolute Maximum Ratings Not Functional Parameter Input level on any 0 3V 3 1V digital pin when on Input voltage on 0 3V 3 0 V analog pins when on Operating Range Interface Levels 2 8V CMOS Level min Wer N a JD WW DEG raj ek l i g ill ei Bey Ge DE rm z i z Biz tions S p A written authorization All Rights Reserved Page 55 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 12 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 r
9. 7 Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 1 7 Document History Changes 2010 05 15 Release First Preliminary rev 0 Rev 1 2010 05 04 Second preliminary issue New layout V2 compliant 4 updated Pin out table ball F3 becomes RESERVED External 32 KHz is not required Added ball F9 RTS in table containing pins must be left connected if not used Added note about RTS must be connected to GND if flow control is not used 86 Power Supply updated electrical parameters for IIC IIB IIA gas classes Added 6 1 1 ATEX useful parameters Rev 2 2011 03 22 86 1 1 Updated Ci and Li values added 7 temperature range updated 17 safety recommendations SS 04 06 Updated ATEX temperature class Reproduction forbidden reg Telit Communications S p A written SS All Rights Reserved Page 9 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 2 Overview In this document all the basic functions of a mobile phone are taken into account for each one of them a proper hardware solution is suggested and eventually the wrong solutions and common errors to be avoided are evidenced Obviously this document cannot embrace the whole hardware solutions and products that may be designed The wrong solutions to be avoided shall be considered as mandatory while the suggested hardware configurations shall not be considered mandatory instead the information g
10. A Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 12 7 Using the Buzzer Output GPIO7 The GPIO7 pad when configured as Buzzer Output is controlled by the GE864 QUAD ATEX module and will drive with appropriate square waves a Buzzer driver This permits to your application to easily implement Buzzer feature with ringing tones or melody played at the call incoming tone playing on SMS incoming or simply playing a tone or melody when needed by your application A sample interface scheme is included below to give you an idea of how to Interface a Buzzer to the GPIQO7 TR V buzzer SMBT2907A Thi 7 DCHT AT du NOTE To correctly drive a buzzer a driver must be provided its characteristics depend on the Buzzer and for them refer to your buzzer vendor Page 58 of 81 A Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 12 8 Using the Temperature Monitor Function 12 8 1 Short Description The Temperature Monitor is a function of the module that permits to control its internal temperature and if properly set see the H TEMPMON command on AT Interface guide it raise to High Logic level a GPIO when the maximum temperature is reached 12 8 2 Allowed GPIO The AT TEMPMON set command could be used with one of the following GPIO Input output Default ON_OF GP1001 TGPIO_02 GPI002 Alternate function C2 TGPIO_03 I O SE CMOS 2 8V 1uA 1m
11. Directives e ATEX Directive 1994 9 EC Explosive Atmospheres In order to satisfy the essential requisite of the ATEX 94 9 EC directive Page 75 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 the GE864 QUAD Atex module is compliant with the following standards e IEC EN 60079 0 electrical apparatus for explosive gas atmospheres general requirements e IEC EN 60079 11 explosive atmospheres Equipment protection by intrinsic safety I e IEC EN 60079 26 explosive atmospheres Equipment with equipment protection level EPL Ga All certifications are available in GE864 QUAD ATEX Product Description r ve ei d Pin tions S p A written authorization All Rights Reserved Page 76 of 81 17 A Reproduction forbidden without Telit Communica Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 SAFETY RECOMMENDATIONS NOTE Read this section carefully to ensure the safe operation These safety instructions contain data and information related to the protection to be adopted for the installation of GE864 QUAD ATEX in hazardous areas classified according to the European standard EN 60079 10 The essential safety requirements against the risk of explosion in classified areas are given in the European directives 94 9 CE dated 23 March 1994 related to equipments and 1999 92 CE dated 16 December d related
12. GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 1 Introduction 1 1 Scope The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GE864 QUAD ATEX module 1 2 Audience This document is intended for Telit customers who are integrators about to implement their applications using our GE864 QUAD ATEX module 1 3 Contact Information Support For general contact technical support to report documentation errors and to order manuals contact Telit Technical Support Center TTSC at TS EMEAlatelit com TS NORTHAMERICAlatelit com TS LATINAMERICA atelit com TS APAC atelit com Alternatively use http www telit com en products technical support center contact php For detailed information about where you can buy the Telit modules or for recommendations on accessories and components visit http www telit com To register for product news and announcements or for product questions contact Telit s Technical Support Center TTSC Our aim is to make this guide as helpful as possible Keep us informed of your comments and suggestions for improvements Telit appreciates feedback from the users of our information 5 ae ti pana d eT ai E i y k n r E D SST E Za vi L t SN a 1 H SEL d ae Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Pa
13. Hardware User Guide 1vv0300879 Rev 3 2011 04 06 4 GE864 QUAD ATEX Module Connections 4 1 PIN OUT The GE864 QUAD ATEX uses 11x11 array BGA technology connection Audio fe XE EE ERREECHEN e MILFs a Hanastree mic inputs phase norn tevel amvrms auo e mom a Hanaset nic signal input phase nom tevel SOmvrms auio ag ear mr AO Handset earphone signal output phases ao 3e mom a Handset mic signat input phases nom tevelSomvems auio 39 moe a Handsfree mic input phase norn tevel amvrms ao 10 eana ao Handsfree ear output phase lie mo earm a0 Handset earphone signal output phase aso mg Ear nr ao Handsfree sar output phase amo O cmo smek ___ 0 ExternalSiMsignal clock Sd fo smn i Externat SIM signal Presencelactvetow Pullupa7 K 18 pa SiMvcC Externat SIM signal Power supplyfortheSIM na SIMIO External SIM signal Data 1 0 e 1 8 3V C E E A wv Auxiliary UART AUX m p o eyo oaao omose mo ao H aiey RTR oarn 1 cos ay Service pin shall be used to upgrade the module from ASC1 RX_AUX TX_AUX The pin shall be tied low to enable the feature only in case of a SERVICE CMOS 2 8V me SW Update activity It is required for debug purpose to be connected to a test pad on the final application Prog Data HW Flow Control Be Jens o outputtor Ring maicator signat tR 1o oTe ____ omos2ev_ _ er com i input for Data terminal signal DTRI
14. Power Supply o Wainpowersuppy Sider elen Wain powersuppiy wer jae vearr e Wain powersuppiy wer elen ain powersuppiy Sd wer o C Leen S lag Let O oe plage a er m ow eo O o DEER CC o oe m oo e eoe O oe EC a kw ow e eee O oe w lo e eoe O oe lag e eoe O oe C a C 2 Pp k on Fa wt j i bk IN E a F g F Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 13 of 81 ER TI CMOS 2 8V CMOS 2 8V CMOS 2 8V CMOS 2 8V 7 Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 o Si Pee IER EE E et fon orang SSS Per RESERVED A3 It Reserved ll Is EE ER E EES SEENEN SEENEN EES mp9 EE ER E DER ERR e E DES EES EC EES ES EES Bpo i eea y Ee a DREES ul L t ll a a SEENEN SI l t ll ell pes ll SEENEN ell beet ll ES EES SCT Iesst TT oe EES a a wp i eea y a OOS SC iYSSSSCidS Bpo C fe O a TT a Bpo o i eea y eo deserved ER E a i eea O a TT TL J ng TT SEENEN el J ng TT Reserved Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 14 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 zu sinat Ip oui oe OOOO eo fos EE E E ell lees ll E EE ER E e a C ERR A Ee H7 IL Reseved ll y O ES EES wooo C ee y a reserved SOS C SS i EES DREES apoo RER CC BEER ER E IESSE R
15. Rights Reserved Page 65 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 14 Assembly the GE864 QUAD ATEX on the Board The Telit GE864 QUAD ATEX have been designed in order to be compliant with the standard lead free SMT process ye OD OO OO oO OO O OD OO OO OO OO OO o oooooOooooo oO oooooOooooO o oo00d 00000 GG0 0 6 30 6 6 0 0 04 00 oO OG Oo oo oOO Ly OD OO OO OD OO O o oodbooooo o oobooooo o oo ooOooOoG Y Lead free Alloy Surface finishing Sn Ag Cu for all solder pads Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 14 1 Recommended foot print for the application D i iii pi Ge dl l f S g ee 5 D Om Oz Ox ge f f 0 O0000000 OO O00000000 Oa O00000000 Oo 0000 o0o0000000 Oz 50606 OOO E O00000000 Oo O00000000 OO0000Q000 OF E Sr Sr Er 0 E GK 0 0 O O O O O O O y SN IS O O j r K COMPONENT PLACEMENT EJ URE In order to easily rework the GE864 QUAD ATEX module is suggested to consider on the application a 1 9mm inhibit area around the module It is also suggested as common rule for a SMT component to avoid having a mechanical part of the application in direct contact with the module TE e wem g e BS i m Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 67 of 81
16. SL H Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 70 of 81 Le Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 NOTE All temperatures refer to topside of the package measured on the package body surface Ay WARNING The GE865 module withstands one reflow process only Ce e e e vd 8 bah d T Te i A h CS Pr a Da a kA A D KS af ee A i Sg Bae H tions S p A written authorization All Rights Reserved Page 71 of 81 CR r Reproduction forbidden without Telit Communica Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 15 Packing system The GE864 QUAD ATEX are packaged on trays of 20 pieces each This is especially suitable for the GE864 QUAD ATEX according to SMT processes for pick amp place movement requirements DOLOAAL ci kuen Section A A The size of the tray is 329 x 176mm e K ge E pe EE E e n f Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 72 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 A WARNING These trays can withstand at the maximum temperature of 65 C NOTE All temperatures refer to topside of the package measured on the package body surface 15 1 Moist
17. all the persons and must not be co located or operating In conjunction with any other antenna or transmitter The system antennals used for this module must not exceed the limits reported in table 2 for mobile and fixed or mobile operating configurations Table 2 max Antenna gain allowed e Users and installers must be provided with antenna installation instructions and transmitter operating conditions for satisfying RF exposure compliance Manufacturers of mobile fixed or portable devices incorporating this module are advised to clarify any regulatory questions and to have their complete product tested and approved for FCC compliance Repair overhaul and reclaiming Repairing of the Intrinsic safety instruments have to be executed only by the manufacturer according EN 60079 19 standard and must be done complying all the safety parameters IMPORTANT NOTE In the event that after the repairing the safety parameters of the specific protection mode are not valid anymore the identification label is removed and the transmitter can not be considered as a safety instrument 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 e Where It can interfere with other electronic devices in environments such as hospitals airports aircrafts etc e Where there is risk of explosion such as gasoline stations oil ref
18. diode must be kept as short as possible by placing the inductor and the diode very close to the power switching IC only for switching power supply This is done in order to reduce the radiated field noise at the switching frequency 100 500 kHz usually e The use of a good common ground plane is suggested e The placement of the power supply on the board must be done In such a way to guarantee that the high current return paths in the ground plane are not overlapped to any noise sensitive circuitry as the microphone amplifier buffer or earphone amplifier Paan aF G Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 34 of 81 lelit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 e The power supply input cables must be kept separate from noise sensitive lines such as microphone earphone cables E tz X d evt e H A d d Poy y inet af E RW oe e e H vi ER i Z e e Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 35 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 7 Temperature Range GE864 QUAD Atex Note The module is fully functional in 20 C 55 C all the temperature range and it fully meets the ETSI specifications Operating Temperature The module is fully functional fl in Range all the temperature range 40 C
19. pins of the module when is powered OFF or during an ON OFF transition 10 2 RS232 Level Translation In order to interface the Telit GE864 QUAD ATEX with a PC com port or a RS232 EIA TIA 232 application a level translator is required This level translator must Eecher forbidden without Telit Gommunicat one S p A written authorization All Rights Reserved Page 43 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 e invert the electrical signal in both directions e change the level from 0 3V to 15 15V Actually the RS232 UART 16450 16550 16650 amp 16750 chipsets accept signals with lower levels on the RS232 side EIA TIA 562 allowing for a lower voltage multiplying ratio on the level translator Note that the negative signal voltage must be less than OV and hence some sort of level translation is always required The simplest way to translate the levels and Invert the signal is by using a single chip level translator There are a multitude of them differing in the number of driver and receiver and in the levels be sure to get a true RS232 level translator not a RS485 or other standards By convention the driver is the level 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 need e D driver e 3 receiver NOTE The digital input lin
20. switching regulator a 500kHz or more switching frequency regulator is preferable because of its smaller inductor size and its faster transient response This allows the regulator to respond quickly to the current peaks absorption e In any case the frequency and switching design selection is related to the application to be developed due to the fact that the switching frequency could also generate EMC interferences e As far as car PB battery the input voltage can rise up to 15 8V This must be kept In mind when choosing components all components in the power Supply must withstand this voltage e A Bypass low ESR capacitor of adequate capacity must be provided In order to cut the current absorption peaks A 100uF tantalum capacitor is typically used e Make sure the low ESR capacitor on the power supply output usually a tantalum one is rated at least 10V Page 30 of 81 A Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 e As far as car applications a spike protection diode must be Inserted close to the power Input in order to clean the supply from spikes e A protection diode can be inserted close to the power input in order to save the GE864 QUAD ATEX from power polarity inversion This can be the Same diode used for spike protection An example of switching regulator with 12V input is in the schematic below split in 2 parts p s To e SWITCHING Sg P 12 INPUT E IE WIN
21. the lead free process This issue should be discussed with the PCB supplier Generally the wettability of tin Lead solder paste on the described surface plating is better compared to lead free solder paste 14 4 Solder paste head free Solder paste Sn Ag Cu It is recommended to use only no clean solder paste in order to avoid the cleaning of the modules after assembly CR Cen ve KS E E if fig Be d Ce ee TE Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 69 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 14 4 1 GE865 Solder reflow Tp Ee Critical Zone T to Tp Temperature gt Preheat 25 t 25 C to Peak Time gt gt IPIl O20b 5 1 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 Time min to max ts 60 180 seconds Tsmax to TL Ramp up Rate 3 C second max Time maintained above Temperature TL ZA Time tL 60 150 seconds Peak Temperature Tp 245 0 5 C Time within 5 C of actual Peak 10 30 seconds Temperature tp Ramp down Rate 6 C second max Time 25 C to Peak Temperature db ag i d s n o 1 es F o Pe i i Ath Se H wg e i a a s V ae 7 es r
22. 04 06 11 Audio Section Overview The first Baseband chip was developed for the cellular phones which needed two separated amplifiers both in RX and in TX section A couple of amplifiers had to be used with internal audio transducers while the other couple of amplifiers had to be used with external audio transducers To distinguish the schematic signals and the Software identifiers two different definitions were introduced with the following meaning e internal audio transducers gt HS MT from HandSetor MicroTelephone e external audio transducers gt HF from HandsFree Actually the acronyms have not the original importance In other words this distinction is not necessary being the performances between the two blocks like the same Only if the customer needs higher output power to drive the speaker he needs to adopt the Aduio2 Section HF Otherwise the choice could be done in order to overcome the PCB design difficulties For these reasons we have not changed the HS and HF acronyms keeping them in the Software and on the schematics The Base Band Chip of the GE864 QUAD ATEX Telit Modules maintains the same architecture For more information and suggestions refer to Telit document e Audio settings application note 80000NT10007a 11 1 Selection mode Only one block can be active at a time and the activation of the requested audio path is done via hardware by AXE line or via software Dy A7 CAP command
23. 4 QUAD Name Usage Number ATEX Pad Number DCD dcd_uart Output from the GE864 QUAD ATEX that indicates the Data Carrier Detect l carrier presence RXD Se Output transmit line of GE864 QUAD ATEX UART Transmit line see Note tx_uart TXD ey Input receive of the GE864 QUAD ATEX UART Receive line see Note rx_uart DTR dtr_uart daa Term eal Read Input to the GE864 QUAD ATEX that controls the DTE READY condition Ai F1 Hi L1 ground DSR dsr_uart Output from the GE864 QUAD ATEX that indicates the Data Set Ready l module is ready RTS rts_uart Input to the GE864 QUAD ATEX that controls the Request to Send Hardware flow control LC a DEES ES NOTE According to V 24 RX TX signal names are referred to the application side therefore on the GE864 QUAD ATEX 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 QUAD ATEX serial port and viceversa for RX Output from the GE864 QUAD ATEX that controls the Clear to Send Hardware flow control Output from the GE864 QUAD ATEX that indicates the Ring Indicator i E incoming call condition TIP For a minimum implementation only the TXD and RXD lines can be connected the other lines can be left open provided a software flow control Is implemented NOTE In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital
24. A INPUT Configurable GPIO l RSA KS enc 052 twine Jeck 3 A t Lee Conigurante cpio CMOS28v waima mr fo In L O 9 O 3 O Alternate function RF Transmission Control GP1008 GP1009 TGPIO_10 GPIO10 Alternate function o ER Im EH ep Ge e gees o je DVI_TX NOTE If the set command ts enable the alternate function Is not usable he Page 59 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 12 9 Indication of Network Service Availability The STAT_LED pin status shows information on the network service availability and Call status In the GE864 QUAD ATEX 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 LED status Device Status Permanently off Fast blinking Net search Not registered Period 1s Ton 0 5s turning off Slow blinking Pered Ze ten OSs Registered full service Permanently on A schematic example could be VBATT SH 330 ao O605 n DLIO1 LY M amp amp 925 1 26 lt STAT LED ya p en K br D ES Jak O i e Reg TL mE Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 60 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 12 10 RTC Bypass Out
25. CIRICALCHARACIERIS TICS EE 51 11 2 1 Input Lines OTR 2 KY Kees 51 11 2 2 Output Lines Chorocteristtcg eee n nee eeeeeseeeeeeeeeeeeeeeeeeaaaaaaeeeseeeeeeeeeeeeeeeeaaaaaaaaaees 52 12 GENERAL PURPOSE UO 54 12 1 GPIO LOGIC LEVELS S 55 12 2 USING A GPIO bapnAeINbRUT 56 12 3 USING A GPIO PAD AS OUTRUT 56 12 4 USING THE RF TRANSMISSION CONTROL GPIOG 0000ooo occ ccc ccccccccccceecccceccccccccsecccceccceecccuscccusececsececausecneeenes 56 12 5 USING THE RFTXMON OUTPUT GbIOpn ceccceecccceeccceeccccccccsecccsecccesccaseceesccussceeseseceesecneseenes 57 12 6 USING THE ALARM OUTPUT GPIO6 00oooo occ ccccccseccccecccccccceeccceeccccccccsccceccccescceesecussccusesecsesecsececuseenes 57 12 7 USING THE BUZZER OUTPUT GbIO ccc ccccccsccccsscccssccccsccccsscccsscccsccessccessccesccesscusscceacsccessccesscesscnes 58 12 8 USING THE TEMPERATURE MONITOR EuNCTION 59 12 8 1 Short TI CSV OW occas oncsesstisaal cosas seehediniosecaastonsed vac menatensstn ni alas sasactasentiael ceas EN NENAU N E in EESTE mani Ni Es aiii aii 59 12 8 2 AllOWOd GPIO 00 ccc cccccccccccccccccuccuccuccacccsccuccuccuccuscuccesceucceccuecuscascuscauccscceccuccuscescusceecesscuscscuscesceesescceseseasss 59 12 9 INDICATION OF NETWORK SERVICE AVAILABILITY 60 12 10 RTC BYPASS Our 61 12 11 EXTERNAL SIM HOLDER IMPLEMENTATION 0anaanannnsannsennsennsennsenssenssensssnssenssersseosserssroseooseeoseeoseroserserssernst 61 13 DAC AND ADC CONV ERG EE 62 13 1 DAC CONVERTER cat
26. ER Ref to Digital Voice Interface Application Note 80000NT10004a NOTE The GE864 QUAD ATEX Modules has one DVI port on the system NOTE Reserved pins must not be connected NOTE RTS must be connected to the GND on the module side if flow control is not used Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 15 of 81 NOTE Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 If not used almost all pins must be left disconnected The only exceptions are the following pins J1 J2 K1 K2 A1 A11 D6 F1 le E eh ie Kee K3 K4 K5 K6 L1 L2 L3 L6 L11 Signal VBATT GND C103 TXD C104 RXD C105 RTS ON OFF RESET RX_AUX TX_AUX SERVICE TR Main power supply NOTE RTS ball F7 should be connected to GND on the module side if flow control Is not used Page 16 of 81 CA Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 4 1 1 BGA Balls Layout TOP VIEW H d K L D E F G ae R D R D E Be R GPIO_08 II GPIO_02 ALARM DVI WAO ON_OFF Erao o Ne GPIO_01 25 RING a GND JDR DAC_OUT SE C103 TXD C105 RTS E GE ae c109 DCD SIMRST AXE MIC_MT EAR_MT MIC_HI Hee RS BOR S i er p Z GG RESET a GPIO_04 Antenna GPIO_06 tions S p A written authorization All Rights Reserved Pa
27. LE CONNECTION 12 4 1 41 KE a 1 RN EE 12 4 1 1 BGA Balls TQ OU orcs ssrncvedenniecyansduscnseeacesvensactsauedesaladseusoatioussen cleegencnaleabed caubebeubonsasdaleovansaaleabiddenecauavewsbebaneseauies 17 5 HARDWARE COMMANDS ccccccccccccccecccccccceccceusuceecaeecsaeecsauecuaeeeuneenuueeeuneesaueesaueesueensuuensaneesauers 19 5 1 TURNING ON THE GEBGG QUAD ATEX GE 19 5 2 TURNING OFF THE GE864 QUAD ATEX 0 00000 occ cece ccccccecccccccccccccccecccceccccnccccsecccsecccuesecusccecsecccauceeetccenseceusecs 22 5 3 HARDWARE UNCONDITIONAL RESTART 0cccccscccccecccceccccccccccccececccnccccccccuccccasceuccceuecccseccceececusecenseseeaucees 24 6 POWER SUPPL EE 26 6 1 POWER SUPPLY REQUIREMENTS aanonnnsonnoonssenssonssonsseoseoosetoott retort tor toosten eoo e oS rS DS PS EDS nonnene neronen oneone ens 26 6 1 1 ATEN use ul PArarmneteT S esris Teni na a OAE E OAE EEE EEOAE SE 6 1 2 Supply parameters for intrinsic sde Se 6 2 POWER CONSUMPTION aanoaanonnnsonnsennsonsonssonnsonnsonnoonsotnsotor etorte otto re one ore oDe DE SPESSE SSESD EEP EDS PSone eneen e enne e oneen 28 6 3 GENERAL DESIGN RULES 0ccccccccccecccceccccceccccsccccccecsecccuuccenecensecccsueceuececsececeececuuseceusccecceceseceeccensesenes 29 6 3 1 Electrical Desten EE 29 6 3 2 Thermal Design E 33 6 3 3 Power Supply PCB Layout Guidelines 000000000000000onnnnnnnnnnnnnnnnnnnononnsossnonsnnononnnnnsssessssssessssss
28. MS current or even could be the simple chip package no heat sink Moreover in the average network conditions the device is requested to transmit ata lower power level than the maximum hence the current consumption will be less than 500mA usually around 150mA For these reasons the thermal design Is rarely a concern and the simple ground plane where the power supply chip is placed grants a good thermal condition to avoid overheating as well As far as the heat generated by the GE864 QUAD ATEX you can consider it to be during transmissions of 1W max during CSD VOICE calls and 2W max during class10 GPRS upload This generated heat will be mostly conducted to the ground plane under the GE864 QUAD ATEX you must ensure that your application can dissipate it Page 33 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 6 3 3 Power Supply PCB Layout Guidelines As seen on the electrical design guidelines the power supply shall have a low ESR capacitor on the output to cut the current peaks and a protection diode on the input to protect the supply from spikes and polarity inversion The placement of these components is crucial for the correct working of the circuitry A misplaced component can be useless or can even decrease the power supply performances e The Bypass low ESR capacitor must be placed close to the Telit GE864 QUAD ATEX power input pads or in the case the power supply is a switching typ
29. RS232 1 4 Se wD CH rm TI0UT of pe R5232 LA ga S RING DOH Tat T30UT O Dene RS232 1 4 Se DSR T4IN T40UT Ops R5232 1 4C ge CTS TSIN TSOUT O2 Dears E5232 1 4 16 RIOUTS 21 RTS GES Zen RIIN arr RS232 1 4D DTP I sour pan E GER 1 4D e DD C ROUT R3IN tom RS232 1 4 zvo m l3 avo Es 3 15 14 MBALID Spitz CL 2 GD RS232 LEVEL TRSANSLATOR The RS232 serial port lines are usually connected to a DB9Y connector with the following layout reproduction gegen without Telit Geet S p A written authorization All Rights Reserved Page 45 of 81 lelit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Le H DCD D uat ao Ol Dep Da KS TX A5232 ST Ire DIS Daa w Ax AS232 gt ST e Dr Daat DTR AS232 lt e RI RS232 0O CO lt Cu zl Z GND gt S i ee L i ae y j oe d r eh du si i e FK j Gescht geg ZS TERN tions S p A written authorization All Rights Reserved Page 46 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 10 3 5V UART Level Translation If the OEM application uses a microcontroller with a serial port UART that works at a voltage different 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 possibl
30. a wireless solutions GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 14 2 Stencil Stencil apertures layout can be the same of the recommended footprint 1 1 we suggest a thickness of stencil foil gt 120um 14 3 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 1 150 Metal pad diameter B mm D a G F BR ZS e b f ig F i 4 D E be oar e h ct H D par f E D a ae D z 1 g i i h pe fie t D el ee TE E TC SI ef Leg eg d l Leg 5 bk se d j Le kb r i a rd x F P ZZ Li Bi Kr 8 z Ke pe 2 8 CEA 4 fy gf d a ff Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 68 of 81 Ing le GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 It is recommended no microvia without solder resist cover under the module and no microvia around the pads see following figure Holes in pad are allowed only for blind holes and not for through holes Recommendations for PCB pad surfaces Layer thickness um Electro less Ni 3 7 good solder ability protection Immersion Au 0 05 0 15 high shear force values The PCB must be able to resist the higher temperatures which are occurring at
31. al design and the board layout must be designed for this current flow If the layout of the PCB is not well designed a strong noise floor is generated on the ground and the supply this will reflect on all the audio paths producing an audible annoying noise at 216 Hz if the voltage drop during the peak current absorption is too much then the device may even shutdown as a consequence of the supply voltage drop Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 28 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 TIP The electrical design for the Power supply should be made ensuring it will be capable of a peak current output of at least 2A 6 3 General Design Rules The principal guidelines for the Power Supply Design embrace three different design steps e the electrical design e the thermal design e the PCB layout 6 3 1 Electrical Design Guidelines The electrical design of the power supply depends strongly from the power source where this power is drained We will distinguish them into three categories e 5V input typically PC internal regulator output e 12V input typically automotive e Battery 6 3 1 1 5V input Source Power Supply Design Guidelines e The desired output for the power supply is 3 8V hence there is no big difference between the Input source and the desired output A linear regulator can be use
32. aration 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 End Users must be provided with transmitter operation conditions for satisfying RF exposure compliance OEM integrators must ensure that the end user has no manual instructions to remove or install the GE864 QUAD ATEX module Antennas used for this OEM module must not exceed 3dBi gain for mobile and fixed operating configurations 8 1 1 Antenna limits in ATEX applications For ATEX applications the system antennal s used for this module must not exceed the limits reported in the following table for mobile and fixed or mobile operating configurations Gas ATEX Power Antenna gain d Antenna gain d category limit 850 900 MHz 1800 1900 MHz IIA max Antenna gain allowed Paan aF G Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 38 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 8 2 GSM Antenna PCB line Guidelines e Ensure that the antenna line impedance is 50 ohm e Keep the antenna line on the PCB as short as possible since the antenna line loss shall be less than 0 3 dB e Antenna line must have uniform characteristics constant cross section avoid meanders and abrupt curves e Keep if possible one layer of the PCB used only for the Ground plane e Surround on the sides
33. ards e g EN 60079 14 only by qualified personnel specifically and completely trained Supply power to the transmitter by means of an apparatus certified for the protection mode Ex ia IIC T4 according to the European standards EN 60079 0 and EN 60079 11 with the following limits e Rated max voltage Ui 4 2 V e Short circuit current li 2 5 A Specific parameters for IIC Gas Group Ui 3 8 V zl AA Specific parameters for IIA IIB Gas Group Ui 4 2V IER X wee ti 7 E Dream D tions S p A written authorization All Rights Reserved Page 27 of 81 ya Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 6 2 Power Consumption The GE864 QUAD ATEX power consumptions are mA P SWITCHED OFF Switched Off Module supplied but Switched Off IDLE mode AT CFUN 1 Normal mode full functionality of the module AT CEUNE 4 16 0 Disabled TX and RX module is not registered on the network AT CFUN 0 or 5 CSD TX and RX mode GSM900 CSD PL5 GSM VOICE CALL DCS1800 CSD PLO GPRS Sending data mode GPRS Sending data mode The GSM system is made de in a way that the RF transmission is not continuous else it is packed into bursts at a base frequency of about 216 Hz and the relative current peaks can be as high as about 2A Therefore the power supply has to be designed in order to withstand with these current peaks without big voltage drops this means that both the electric
34. ations S p A written authorization All Rights Reserved Page 39 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 9 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 QUAD ATEX interface circuits Absolute Maximum Ratings Not Functional Parameter Min Max Input level on any 0 3V 3 1V digital pin when on Input voltage on 0 3V 3 0 V analog pins when on Operating Range Interface Levels 2 8V CMOS Level Level For 1 8V signals Operating Range Interface Levels 1 8V CMOS Input high level Min Input iow teve ovo V 2 2V Output high level Current characteristics Leve be eem do e bw Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 40 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 9 1 Reset Signal Signal Function V0 Ball Number RESET Reset LW RESET is used to reset the GE864 QUAD ATEX modules Whenever this signal is pulled low the GE864 QUAD ATEX is reset When the device is reset it stops any operation After the release of the reset GE864 QUAD ATEX is unconditionally shut down without doing any detach operation from the network where it Is registered This behavior is not a p
35. d A switching power supply will not be suited because of the low drop out requirements e When using a linear regulator a proper heat sink shall be provided in order to dissipate the power generated e A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks close to the GE864 QUAD ATEX a 100uF tantalum capacitor is usually suited e Make sure the low ESR capacitor on the power supply output usually a tantalum one is rated at least 10V e A protection diode can be inserted close to the power Input in order to save the GE864 QUAD ATEX from power polarity inversion em i TETERE tions S p A written authorization All Rights Reserved Page 29 of 81 ng Reproduction forbidden without Telit Communica Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 An example of linear regulator with SV input Is Sjo Links Reguiscor 5 Su In Z220 caba Janf u ATR Jey ZEN DEDI L e Gaby 7 7 16K 24 ae ee Ee 6 3 1 2 12V input Source Power Supply Design Guidelines e The desired output for the power supply is 3 8V hence due to the big difference between the Input source and the desired output a linear regulator Is not suited and shall not be used A switching power supply will be preferable because of its better efficiency especially with the 2A peak current load represented by the GE864 QUAD ATEX e When using a
36. dule and will rise when the transmitter is active and fall after the transmitter activity is completed There are 2 different modes for this function 1 Active during all the calls For example if a call is started the line will be HIGH during all the conversation and it will be again LOW after hanged up The line rises up 300ms before first TX burst and will became again LOW from 500ms to 1s after last TX burst 2 Active during all the TX activity The GPIO is following the TX bursts Please refer to the AT User interface manual for additional information on how to enable this function 12 6 Using the Alarm Output GPIO6 The GPIO6 pad when configured as Alarm Output is controlled by the module and will rise when the alarm starts and fall after the issue of a dedicated AT command This output can be used to power up the module controlling micro controller or application at the alarm time giving you the possibility to program a timely system wake up to achieve some periodic actions and completely turn off either the application and the module during sleep periods dramatically reducing the sleep consumption to few pA In battery powered devices this feature will greatly improve the autonomy of the device NOTE During RESET the line is set to HIGH logic level em i TETERE tions S p A written authorization All Rights Reserved Page 57 of 81 ng Reproduction forbidden without Telit Communica
37. e it can be placed close to the inductor to cut the ripple provided the PCB trace from the capacitor to the GE864 QUAD ATEX is wide enough to ensure a dropless connection even during the 2A current peaks e The protection diode must be placed close to the input connector where the power source is drained e he PCB traces from the input connector to the power regulator IC must be wide enough to ensure no voltage drops occur when the 2A current peaks are absorbed Note that this is not made in order to save power loss but especially to avoid the voltage drops on the power line at the 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 300 400 mV may be acceptable from the power loss point of view the same voltage drop may not be acceptable from the noise point of view If your application does not have audio interface but only uses the data feature of the Telit GE864 QUAD ATEX then this noise is not so disturbing and power supply layout design can be more forgiving e The PCB traces to the GE864 QUAD ATEX and the Bypass capacitor must be wide enough to ensure no significant voltage drops occur when the 2A current peaks are absorbed This is for the same reason as previous point Try to keep this trace as short as possible e The PCB traces connecting the Switching output to the inductor and the switching
38. e the most suitable antenna for that those band s Bandwidth 70 MHz in GSM850 80 MHz in GSM900 170 MHz in DCS amp 140 MHz PCS band When using the Telit GE864 QUAD ATEX since there s no antenna connector on the module the antenna must be connected to the GE864 QUAD ATEX through the PCB with the antenna pad In the case that the antenna Is not directly developed on the same PCB hence directly connected at the antenna pad of the GE864 QUAD ATEX then a PCB line Is needed in order to connect with it or with its connector i f SM HE ig D y I Dy fy q a E d i Ti a eel d ay S n ak d tc CT i SEL ee l z F bat Se 4 s j j KE e SR Gis e W s Fe bw Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 37 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 This line of transmission shall fulfill the following requirements ANTENNA LINE ON PCB REQUIREMENTS Impedance 50 ohm 0 3 dB No coupling with other signals allowed Cold End Ground Plane of antenna shall be equipotential to the GE864 QUAD ATEX ground pins Furthermore if the device is developed for the US market and or Canada market it shall comply with the FCC and or IC approval requirements This device is to be used only for mobile and fixed application The antennals used for this transmitter must be installed to provide a sep
39. e translator circuit for a 5V TRANSMITTER RECEIVER can be IER TxD EM E TxD 2 Ou aH D To TELIT To OEM HARDWARE eg RAD IW Ha 2 jo TOFSZ07AFE OND TIP Note that the TC7SZ07AE has open drain output therefore the resistor R2 is mandatory m e Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved A Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 NOTE The UART input line TXD rx_uart of the GE864 QUAD ATEX is NOT internally pulled up with a resistor so there may be the need to place an external 47KQ 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 47KQ may be required Care must be taken to avoid latch up on the GE864 QUAD ATEX and the use of this output line to power electronic devices shall be avoided especially for devices that generate spikes and noise such as switching level translators micro controllers failure in any of these condition can severely compromise the GE864 QUAD ATEX functionality NOTE In case of reprogramming of the module has to be considered the use of the RESET line to start correctly the activity The preferable configuration is having an external supply for the buffer level translator Page 48 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011
40. enna has to be installed with care in order to avoid any interference with other electronic devices and has to guarantee a minimum distance from the body 20 cm In case of this requirement cannot be satisfied the system integrator has to assess the final product against the SAR regulation EN 50360 The European Community provides some Directives for the electronic equipments introduced on the market All the relevant information s are available on the European Community website http europa eu int comm enterprise rtte dir99 5 htm The text of the Directive 99 05 regarding telecommunication equipments is available while the applicable Directives Low Voltage and EMC are available at http europa eu int comm enterprise electr_equipment index_en htm L i o ay E FS i i a ei r 9 ats oa 2 i ff Ke H ST z Ar H H E E Ge e E i _ LH tions S p A written authorization All Rights Reserved Page 81 of 81 A Te Ka Reproduction forbidden without Telit Communica
41. eport its status provided this device has interface levels compatible with the 2 8V CMOS levels of the GPIO If the digital output of the device to be connected 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 this pull up must be switched off when the module is in off condition 12 3 Using a GPIO Pad as OUTPUT The GPIO pads when used as outputs can drive 2 8V CMOS digital devices or compatible hardware When set as outputs the pads have a push pull output and therefore the pull up resistor may be omitted The illustration below shows the base circuit of a push pull stage GPIO7 Q 12 4 Using the RF Transmission Control GPIO4 The GPIO4 pin when configured as RF Transmission Control Input permits to disable the Transmitter when the GPIO Is set to Low by the application In the design is necessary to add a resistor 47K pull up to 2 8V this pull up must be switched off when the module Is In off condition i he he Ge e if ao E ma e gf SEN db Si Et ZC TETERE Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 56 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 12 5 Using the RFTXMON Output GPIO5 The GPIO5 pin when configured as RFTXMON Output is controlled by the GE864 QUAD ATEX mo
42. es Deals with the assessments of the module Chapter 17 Safety Recommendations 4 a A i p mA b m Te nk eve E Ji d ba A 3 Me d eg CR 1 j 5 i ele 3 r J r k RT ob Sidd a tions S p A written authorization All Rights Reserved Page 7 of 81 ng Reproduction forbidden without Telit Communica Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 1 5 Text Conventions Danger This information MUST be followed or catastrophic equipment failure 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 malfunction Tip or Information Provides advice and suggestions that may be useful when Integrating the module All dates are in ISO 8601 format i e YYYY MM DD 1 6 Related Documents e GE864 QUAD ATEX Product description 80336S110052a e Telit s GSM GPRS Family Software User Guide 1vv0300784 e Audio settings application note 80000NT10007a e Digital voice Interface Application Note 80000NT10004a e Product description 80331S1T10074a e SIM Holder Design Guides 80000NT10001a e AT Commands Reference Guide 80000S110025a e Telit EVK2 User Guide 1vv0300704 ue Reproduction forbidden without Telit Communica tions S p A written authorization All Rights Reserved Page 8 of 81
43. es working at 2 8V CMOS have an absolute maximum input voltage of 3 0V therefore the level translator IC shall not be powered by the 3 8V supply of the module Instead it must be powered from a 2 7V 2 9V dedicated power supply This is because in this way the level translator IC outputs on the module side i e GE864 inputs will work at 3 8V interface levels damaging the module inputs NOTE In order to be able to do In circuit reprogramming of the GE864 firmware the serial port on the Telit GE864 shall be available for translation into RS232 and either it s controlling device shall be placed into tristate disconnected or as a gateway for the serial data when module reprogramming occurs Only RXD TXD GND and the On off module turn on pad are required to the reprogramming of the module the other lines are unused All applicator shall include in their design such a way of reprogramming the GE864 L F lt m p RN a wei P rah 2 et ied St E Z Ze I 2 r i a went Sia tions S p A written authorization All Rights Reserved Page 44 of 81 A Te Ka Reproduction forbidden without Telit Communica Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 An example of level translation circuitry of this kind is XR 1 na F O 03 D DS SEPET LA ZIlS s 28 Cla e 22 Cl ES CH s LA Sll 1 CO 3 wi cp U201 MAX3737EAI SSOP 28 TIIN TIOUT gt BX
44. fom bTe mec or ctos oco o output tor Data carrier detect signat D001 to DTE mec e oomo i Seria eta input rom ore Jm en Jose 0 Output or Data set ready signat DSR o DTE emos2v e coses i input for Request to send signal RTSIfrom OTE emos2av e ctoe crs 0 output tor Cear to sendsignal CTS toDTE men Page 12 of 81 7 Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Internal DAC and ADC ESCHER EE ECKER EC mt mem Ju rtafaeeeeg ooo oS part ADC IN2 Al_ Analog Digital corverterinput S SC AYOS Miscellaneous Functions ma RESET DI Resetinpot foe Ia fo Statusindicatorted oo Input command for switching power ON or OFF toggle J5 ON_OFF command The pulse to be sent to the GE864 QUAD ATEX must be equal or greater than 1 second CMOS 1 8V Power Pull up 47K Pull up to VBATT CMOS 2 8V Telit GPIO DVI E6 GPIO_01 JDR fo Telit GPI001 1 0 pin Jammer detect report Telit GPI002 Configurable GPIO DVI audio Telit GPI003 Configurable GPIO DVI audio B3 GPIO 04 up Telit GPIO04 Configurable GPIO RF Transmission Control GPIO_05 RETXMON w JEE Configurable GPIO Transmitter ON CMOS 2 8V es PI0_06 ALARM W Teli P1006 Configurable geingen fu ePio_o7 euzzer W Telit P1007 Configurable P107 Buzzer men mg Jegen nm V0 rm Configurable GPIO DViaudo men er Jegen en W Tree Configurable GPIO DVIaudio men
45. ge 17 of 81 lelit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 AUDIO Signals balls SIM CARD interface balls AUX UART amp SERVICE Signals balls Prog data Hw Flow Control signals balls ADC signals balls MISCELLANEOUS functions signals balls TELIT GPIO balls POWER SUPPLY VBATT balls POWER SUPPLY GND balls RESERVED i gd Reproduction forbidden without Telit Communica Page 18 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 5 Hardware Commands 5 1 Turning ON the GE864 QUAD ATEX To turn ON the GE864 QUAD ATEX the pad ON must be tied low for at least 1 second and then released When the power supply voltage is lower than 3 4V the pad ON must be tied low for at least 4 seconds The maximum current that can be drained from the ON pad is 0 1 mA A simple circuit to do it Is AE UE E Hl C1 Power on Impulse H HI 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 module power regulator and improper power on off of the module The line ON must be connected only in open collector configuration NOTE In this document all the lines that are inverted hence have active low signals are labeled with a name that ends witha SR TIP To check if the device has powered on the hardware line PWRMON should be monitored After 1000ms
46. ge 6 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 1 4 Document Organization This document contains the following chapters Chapter 1 Introduction provides a scope for this document target audience contact and support information and text conventions Chapter 2 Overview provides an overview of the document Chapter 3 GE864 Mechanical Dimensions Chapter 4 GE864 Module Connections deals with the pin out configuration and layout Chapter 5 Hardware Commands How to operate on the module via hardware Chapter 6 Power supply Power supply requirements and general design rules Chapter 7 Temperature range ATEX temperature classification Chapter 8 Antenna The antenna connection and board layout design are the most important parts in the full product design Chapter 8 Logic Level specifications Specific values adopted in the implementation of logic levels for this module Chapter 10 Serial ports The serial port on the Telit GE864 QUAD ATEX is the core of the interface between the module and OEM hardware Chapter 11 Audio Section overview Refers to the audio blocks of the Base Band Chip of the GE864 Telit Modules Chapter 12 General Purpose I O How the general purpose I O pads can be configured Chapter 13 DAC and ADC Section Deals with these two kind of converters Chapter 16 Conformity Assessment issu
47. ineries etc Eegeregie forbidden without Telit Communications S p A written authorization All Rights Reserved Page 80 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 It is responsibility of the user to enforce the country regulation and the specific environment regulation Do not disassemble the product any mark of tampering will compromise the warranty validity We recommend following the instructions of the hardware user guides for a correct wiring of the product The product has to be supplied with a stabilized voltage source and the wiring has to be conforming to the security and fire prevention regulations The product has to be handled with care avoiding any contact with the pins because electrostatic discharges may damage the product Itself Same cautions 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 functioning of the final product therefore care has to be taken to the external components of the module as well as of any project or installation issue because the risk of disturbing the GSM network or external devices or having impact on the security Should there be any doubt please refer to the technical documentation and the regulations in force Every module has to be equipped with a proper antenna with specific characteristics The ant
48. ion forbidden without Telit Communications S p A written SCHEER All Rights Reserved Page 53 of 81 Le Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 12 General Purpose UO The general purpose I O pads can be configured to act in three different ways e Input e Output e Alternate function internally controlled Input pads can only be read and report the digital value high or low present on the pad at the read time output pads can only be written or queried and set the value of the pad output an alternate function pad Is internally controlled by the GE864 QUAD ATEX firmware and acts depending on the function implemented The following GPIO are available on the GE864 QUAD ATEX GP1004 Alternate function GPIO_04 i CMOS 2 8V 1uA 1mA INPUT RF Transmission Configurable GPIO Control GPIO06 Alternate function Se GPIO 06 GC GPIO CMOS 2 8V 1uA 1mA INPUT Lafe ALARM GPIOO1 Alternate function GPIO08 Alternate function GPIO 08 ue GPIO CMOS 2 8V 1uA 1mA INPUT o DVI_TX GPI002 Alternate function GPIO03 Alternate function GPIO_ 03 dE GPIO CMOS 2 8V 1uA 1mA INPUT po foo Du EN GPIO05 Alternate function GPIO_ 05 me E ut GPIO CMOS 2 8V 1uA 1mA INPUT afo RETXMON GPIO07 Alternate function GPIO09 Alternate function Reproduction forbidden without Telit Comuna Ne S p A written authorization All Rights Reserved Page 54 of 81 12 1 Reproduct Telit GE864 QUAD ATEX Hardware User Guide
49. ir a a a a a n 62 E E E TEE 62 131 2 Enabling DAC EE 63 13 1 3 Low Pass Filter Example EE 63 13 2 ADC CONVERTER tte 64 I2 Deser 11110 EE 64 13 2 2 Using ADC WE 64 13 3 DEBUG OF THE GE864 QUAD ATEX IN PRODUCTION 0c ccccsecccccsecccccecccccesccccsccccceuceccesceccusececeueeeeeaes 65 14 ASSEMBLY THE GE864 QUAD ATEX ON THE BOARD 66 14 1 RECOMMENDED FOOT PRINT FOR THE APPLICATION 0c cccseccccecccceccccccccceccceeccccsececsececsececeucccetcceesececaecees 67 14 2 GENEE 68 14 3 EEGEN 68 14 4 SOLDER PASTE sec sceecesers cece tee cece sceadeccnc ce epecceceecgontce a N EOS 69 14 4 1 GE865 Solder reflow occ ccccccccccccccccccceeccccscccccceeeeeeeeeaa ae ee essseeeeeeeeeeeeeeeeeaaaaaeseseeeeeeeeeceseeeeeaeaaaaaaasseeeeeeeeeeess 70 15 PACKING SYSTEM E 72 15 1 MOISTURE SENSIBILITY EE 73 15 2 GE864 ORIENTATION ON THETRAN tostor etose ore ose oS ensen s eroste soose ense eneee 74 16 CONFORMITY ASSESSMENT ISSUES 2 2 oo ieee cece cece cece eeceecaceesacecuececaceecueeesueeusuueusuueesgeeeseeesneens 75 17 SAFETY RECOMMENDATIONS cece cece ccc ccc cecccecceecceeceeaceeseencecaeeeueeeaeenaeenueecueenueesueenaeenanenas 77 l ee 4 F Tot ep F j o D EI ak d D dun Hi 8 d i j d e bh d ge bet Sal Ee l K H PF d gt x e e eF z Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 5 of 81 Telit eil
50. iven shall be used as a guide and a starting point for properly developing your product with the Telit GE864 QUAD ATEX module NOTICE EN The integration of the GSM GPRS GE864 QUAD ATEX cellular module within user application shall be done according to the design rules described in this manual The information presented in this document is believed to be accurate and reliable However no responsibility is assumed by Telit Communications S p A for its use or any infringement of patents or other rights of third parties which may result from its use No license is granted by implication or otherwise under any patent rights of Telit Communications S p A other than for circuitry embodied in Telit products This document is subject to change without notice 3 wee ti 7 E Dream D tions S p A written authorization All Rights Reserved Page 10 of 81 ue Reproduction forbidden without Telit Communica Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 3 GE864 QUAD ATEX Mechanical Dimensions The Telit GE864 QUAD ATEX module overall dimensions are e Length 30 mm e Width 30 mm e Thickness 2 9 mm e Weight 4 29 de SEZIONE B B 0 88 tte Ae Se EE eege e SEZIONE A A SS SCH ISIS ep CN 4 i a 3 Ee zs Reproduction gegen without Telit Communications S p A written authorization All Rights Reserved Page 11 of 81 Telit GE864 QUAD ATEX
51. n the module and OEM hardware 2 serial ports are available on the module e MODEM SERIAL PORT Main ASCO e MODEM SERIAL PORT 2 Auxiliary ASC1 10 1 MODEM SERIAL PORT Several configurations can be designed for the serial port on the OEM hardware but the most common are e RS232 PC com port e microcontroller UART a 2 8V 3V Universal Asynchronous Receive Transmit e microcontroller UART d 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 that does not need a level translation is the 2 8V UART The serial port on the GE864 QUAD ATEX 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 QUAD ATEX UART are the CMOS levels Absolute Maximum Ratings Not Functional Parameter Min Man GE level on any 3V D 1V digital pad when on Input voltage on 0 3V analog pads when on Operating Range Interface levels 2 8V CMOS Level Mr Max boer CR e Output Tow leve VV Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 42 of 81 Z ei S ve GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 The table below shows the signals of the GE864 QUAD ATEX serial port RS232 Pin Signal GE86
52. n in Differential configuration through a capacitor when in S ngle Ended configuration Using a Single Ended configuration the unused output line must be left open Not respecting this constraint the output stage will be damaged TIP Remember that there are slightly different electrical performances between the two internal audio amplifiers e the Gar Mines can directly drive a 762 load at 12dBFS in Differential configuration e the Ear_HF lines can directly drive a 4Q load in Differential configurations e There is no difference if the amplifiers drive an external amplifier OdBFSis the normalized overall Analog Gain for each Output channel equal to 3 V differential em i TETERE tions S p A written authorization All Rights Reserved Page 52 of 81 ng Reproduction forbidden without Telit Communica 7 Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 EAR MT Output L Lines differential signal bandwidth 150 4000 Hz A 3 dB differential output voltage Rload open circuit 7 12dBFS volume increment B per step EAR_HF Output Lines line coupling AC single ended DC differential output load resistance output load resistance resistance S ECTS ECTS Signal bandwidth 150 4000 Hz a 3 dB maximal output power 0 35W_ Jo Q battery ime pee gt 3 6V volume increment increment 2 dB per 2dB per step Reproduct
53. ng an ON OFF transition e K f d d Prt Ma d i Re A d ki e el E d e H Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 23 of 81 e 8 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 5 3 Hardware Unconditional Restart WARNING The hardware unconditional Restart must not be used during normal operation of the device since It does not detach the device from the network It shall be kept as an emergency exit procedure to be done In the rare case that the device gets stacked waiting for some network or SIM responses To unconditionally restart the module the pad RESET must be tied low for at least 200 milliseconds and then released The maximum current that can be drained from the RESET pad Is 0 15 mA A simple circuit to do it Is RESET H L Unconditional Restart Impulse ND NOTE Do not use any pull up resistor on the RESET line or any totem pole digital output Using pull up resistor may bring to latch up problems on the module power regulator and improper functioning of the module The line RESET must be connected only in open collector configuration TIP The unconditional hardware Restart must always be implemented on the boards and must be used by the software as an emergency exit procedure E e a E a bra i Ve i ES E D e Eu 1 i i e S METE
54. of the applicable country and where applicable with the relevant wiring rules Telit reserves the right to make modifications additions and deletions to this document due to typographical errors inaccurate Information or improvements to programs and or equipment at any time and without notice Such changes will nevertheless be incorporated into new editions of this document Copyright Transmittal reproduction dissemination and or editing of this document as well as utilization of its contents and communication thereof to others without express authorization are prohibited Offenders will be held liable for payment of damages All rights are reserved Copyright Telit Communications SpA 2011 Page 3 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Contents PRR WAMU EE 2 NK ap GOT TU IN DEE 6 1 1 el E 6 1 2 lut Ve EE 6 1 3 CONTACT INFORMATION SUPPORT oaianeenennesseenssseeresssoresstoroestttrttsttttts ettr esseere esetre s tertres eters eeorosseereeseeeresseere 6 1 4 DOCUMENT ORGANIZATION ccccccccsecccceccccecccceccccscccceecccucccnecccsecccucccuesccusececsesccausecuscenseceesesecauceeutecenseesenss 7 1 5 TEXT CONVENTION Se rn rep ee ee ee ee 8 1 6 RELATED DOCUMENTS tee EE 8 Vd DOCOMENT TAS ORY GE 9 2 OVERVIEW ENEE 10 3 GE864 QUAD ATEX MECHANICAL DIMENGIONS 00 cc ccc ccc ccc cece cecccecaceesuceesacecsneeesaeecuneesanensanes 11 A GE864 QUAD ATEX MODU
55. oot voltage during the slot tx for example NOTE The Operating Voltage Range MUST never be exceeded also in power off condition care must be taken in order to fulfill min max voltage requirement NOTE When the power supply voltage is lower than 3 4V to turn ON the module the pad ON must be tied low for at least 3 seconds j FY DE yr it Se bg ve ER EE SE ege Se SES Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 26 of 81 yee 6 1 1 6 1 2 Reproduction forbidden without Telit Communica Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 ATEX useful parameters In order to integrate the Telit GE864 QUAD Atex module in ATEX applications please refer to the appropriate ATEX reference standard ATEX reference standard depends either by your ATEX application and either by the working hazardous area classification Below are listed parameters and useful information to integrate the module in your application e Total capacity 27 5 uF e Total inductance 55 2 nH e No voltage upper than the supply voltage Is present into the module e All GPIOs are protected against short circuit Supply parameters for intrinsic safety Mounting and wiring operations in classified areas for explosive gas atmospheres must be executed accordingly to the current procedures and to the national and international stand
56. over and under the antenna line on PCB with Ground avoid having other signal tracks facing directly the antenna line track e he ground around the antenna line on PCB has to be strictly connected to the Ground Plane by placing vias once per 2mm at least e Place EM noisy devices as far as possible from GE864 QUAD ATEX antenna line e Keep the antenna line far away from the GE864 QUAD ATEX power supply lines e If you have EM noisy devices around the PCB hosting the GE864 QUAD ATEX such as fast switching ICs take care of the shielding of the antenna line by burying it inside the layers of PCB and surround it with Ground planes or shield it with a metal frame cover e Ifyou don t have EM noisy devices around the PCB of GE864 QUAD ATEX by using a strip line on the superficial copper layer for the antenna line the line attenuation will be lower than a buried one 8 3 GSM Antenna installation Guidelines e Install the antenna in a place covered by the GSM signal e he 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 e Antenna shall not be installed inside metal cases e Antenna shall be installed also according Antenna manufacturer Instructions i R d EM LO e ie j ce ii rt aia aed L f e e Ze es rv fi ke r eet z eg Biz Reproduction forbidden without Telit Communic
57. particular application Input Lines Characteristics MIC_MT and MIC_HF differential microphone paths Gain increment 6dB per step WARNING AC means that the signals from the microphone have to be connected to input lines of the module through capacitors which value has to be 2 100nF Not respecting this constraint the input stages will be damaged WARNING when particular OEM application needs a Single Ended nput configuration it is forbidden connecting the unused Input directly to Ground but only through a 100nF capacitor Don t forget that the useful input signal will be halved in Single Ended nput configuration em i TETERE tions S p A written authorization All Rights Reserved Page 51 of 81 ng Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 11 2 2 Output Lines Characteristics TIP We suggest driving the load differentially from both output drivers thus the output swing will double and the need for the output coupling capacitor avoided However If particular OEM application needs also a Single Ended circuitry can be implemented but the output power will be reduced four times The OEM circuitry shall be designed to reduce the common mode noise typically generated on the ground plane and to get the maximum power output from the device low resistance tracks WARNING The loads are directly connected to the amplifier outputs whe
58. roper shut down because any GSM device is requested to issue a detach request on turn off For this reason the Reset signal must not be 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 achieve always a proper power on reset sequence so there is no need to control this pin on start up It may only be used to reset a device already on that is not responding to any command NOTE Do not use this signal to power off the GE864 QUAD ATEX Use the ON OFF signal to perform this function or the ATHSHDN command Reset Signal Operating Levels Sigal Me Wes this signal is internally pulled up so the pin can be left floating if not used If unused this signal may be left unconnected If used then it must always be connected with an open collector transistor to permit to the internal circuitry the power on reset and under voltage lockout functions i om PEET S P n d i i J eel G 1 Ah S eem e Pe 4 d en L 2 ndi d per l Ek ere Kal kb e d k d d j W s Fe bw Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 41 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 10 Serial Ports The serial port on the Telit GE864 QUAD ATEX is the core of the interface betwee
59. sssesenso 34 k TEMFERATURE RANGE EE 36 7 1 ATEX TEMPERATURE CLASSIEICATION stroet rotoro tor otost noron o rororo ne eons eoneeoneeoneros 36 SE iE CR EE 37 8 1 GSM ANTENNA REQUIREMENTS naannoonnnennseensoonseonseonseonstonsornstno stroo t rot roto o eno rDo Pe rPe neono e oneone ooreen seonre ennt 37 6 1 1 Antenna limits 1 ALEX ET 38 8 2 GSM ANTENNA PCB LINE GUIDELINES ccccccecccccecccccccccecccceccccsscccescccccceceesccaececececeecceesesecaeseeaeseenes 39 8 3 GSM ANTENNA INSTALLATION GUIDELINES 0a aansanoensonssonssonnsenssenssenssenseeossrosserserrseroseooseooseeoseroseeosersserns 39 ZE Beie eg LEVELSPECIFICATIONS EEN 40 9 1 RESET SIGNAL aaaaansonnsonnsonnsennsennsonnsonneornetnoo onret ooto o teneor eooo e oDe DE OPE DSE SDE SPESSE SSES S ESSEED S EPS ED EEn eneen neoon eos 41 10 CH AER eh CA KEE 42 i 6 es ae STECK i i HI ef jee r SE E Rya g tions S p A written authorization All Rights Reserved Page 4 of 81 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 10 1 MODEM SERIAL PORT 42 10 2 RS232 LEVEL TRANSLATION otso tooto etrr o eooo neoon eeo ne oone oore eose rosernsernnt 43 10 3 BV UART LEVEL TRANSLATION ccccccseccccecccceccccecccceecccceccccecenseccceucccucceusececesecsusecusccneceusececueceeueceenes 47 11 AUDIO SECTION dE EEN 49 11 1 SELECTION 6 8 EEN 49 11 2 ELE
60. tain an analog voltage Page 62 of 81 A Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 13 1 2 Enabling DAC The AT command below is available to use the DAC function AT DACI lt enable gt lt value gt lt value gt scale factor of the integrated output voltage 0 1023 with 10 bit precision and it must be present if lt enable gt 1 Refer to SW User Guide or AT Commands Reference Guide for the full description of this function Refer to SW User Guide or AT Commands Reference Guide for the full description of this function NOTE The DAC frequency is selected internally D A converter must not be used during POWERSAVING 13 1 3 Low Pass Filter Example F1 ow INPUT idac out OUTPUT C1 100nF C2 100nF C3 100nF P2 se SND GND GND GNC GND Reproduction forbidden without Telit Comuna Ne S p A written authorization All Rights Reserved Page 63 of 81 13 2 13 2 1 13 2 2 7 Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 ADC Converter Description pou sonst Je finecon ret be m poon Rk spoeancsei Sd ba bech al artaggtat converse T The GE864 QUAD ATEX module provides three Analog to Digital Converter The on board A Ds are 11 bit converter They are able to read a voltage level in the range of 0 2 volts applied on the ADC pin input store and convert it into 11 bit word po Min Max Units
61. the line raised up the device could be considered powered on em i TETERE tions S p A written authorization All Rights Reserved Page 19 of 81 aa Reproduction forbidden without Telit Communica 7 Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 A flow chart showing the proper turn on procedure Is displayed below X L b N ON_OFF LOW ON_OFF HIGH Delay 300 ms Enter ATSCR gt AT answer in 1 second WRMON ON or 2s timeout Y S l N NOTE In order to avoid a back powering effect it is recommended to avoid having any HIGH logic level signal applied to the digital pins of the module when Is powered OFF or during an ON OFF transition a i 1 t Vi z JN 7 oA d ZE oa Kb i d i r CA V SE i o v w e d e kg N d e A E Biz Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 20 of 81 lelit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 A flow chart showing the AT command managing procedure Is displayed below Delay 300 ms Enter AT lt CR gt No answer in 1 second Y For example 1 Let s assume you need to drive the ON pad with a totem pole output from 1 8V up to 39V microcontroller LIN LI Hl Qi Power on Impulse po 2 Let s assume you need to drive the ON pad directly with an ON OFF button
62. tive and do not require further involvement of a R amp TTE Directive Notified Body for the final product In all other cases or if the manufacturer of the final product is in doubt then the equipment integrating the radio module must be assessed against Article 3 2 of the R amp TTE Directive In all cases assessment of the final product must be made against the Essential requirements of the R amp TTE Directive Articles 3 1 a and b safety and EMC respectively and any relevant Article 3 3 requirements The GE864 QUAD ATEX module is conforming with the following European Union Directives e R amp TTE Directive 1999 5 EC Radio Equipment amp Telecommunications Terminal Equipments e Low Voltage Directive 73 23 EEC and product safety e Directive 89 336 EEC for conformity for EMC e In order to satisfy the essential requisite of the R amp TTE 99 5 EC directive the GE864 QUAD ATEX module is compliant with the following standards e GSM Radio Spectrum Standard EN 301 511 and 3GPP 51 010 1 e EMC Electromagnetic Compatibility Standards EN 301 489 1 and EN 301 489 7 e LVD Low Voltage Directive Standards EN 60 950 In this document and the Hardware User Guide Software User Guide all the information you may need for developing a product meeting the R amp TTE Directive is included Furthermore The Telit GE864 QUAD Atex is assessed to be conform to the ATEX Directive Telit GE864 QUAD Atex is conforming to the following European Union
63. to user plants ATTENTION Operations of assembling installing starting and servicing instruments in hazardous areas can be executed only by qualified personnel specifically trained to perform these activities In areas with explosive gas atmospheres with reference to the safety Standards A ATTENTION Deviation from installation procedures and conditions specified in this document and or in the operator manual may invalidate the product s conformity with the 94 9 CE ATEX directive Marking the components GE864 QUAD ATEX have the following marking plates and have been certified to comply with Directive 94 9 EC i 145 i i GA b o Tela TE era eh i da Ba ai ig L 1 i le A d ai e y Bs Sidd Rimi kA tions S p A written authorization All Rights Reserved Page 77 of 81 a A Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Following the type plates LAYOUT DESCRIPTION 1 Telit Logo 2 Clear writing of device model name 3 Clear writing and Barcode type 2D datamatrix of IMEI number LOT N WWYY 4 Clear writing of indication IMQ 09 ATEX 39 U Gil 00 5 Clear writing of indication Il 1 G Designed in Italy Madein Germany 6 Clear writing of indication Ex ia IIC T4 7 Clear writing of Software and Hardware release 8 Clear writing of production lot WW week YY year 9 Mark for protection from explosion CE mark and Notify Bod
64. ure sensibility The level of moisture sensibility of GE864 QUAD ATEX is 3 in according with standard IPC JEDEC J STD 020 take care all the relatives requirements for using this kind of components Prodi forbidden without Telit Communications S p A written authorization All Rights Reserved Page 73 of 81 wireless solutions GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 15 2 GE864 orientation on the tray Ref No rounded comer on ABC module s printed circuit boa The modules on the tray are oriented as shown in A and the tray is oriented toward left as shown in B LIGOOZOAAI e e D KZ A KA A e 9 d ree S B K s VI em A ST ae Bn ES ToP E GTA fi wee F r is L EE AE pre y z j V gi AiL SE F e d D kl et D sl m pa x e i ae e E 8 a e E LR e r e d Pe E d d i A4 3 i E r bd ZS d weber i sF m F ZE eg Gem we EES S Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 74 of 81 16 Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Conformity Assessment Issues The GE864 QUAD ATEX module is assessed to be conform to the R amp 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 amp TTE Direc
65. uthorization All Rights Reserved Page 78 of 81 A Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Module power supply is depending on the Gas class of the final application Max rates in IIC class Supply power to the transmitter by means of an apparatus certified for the protection mode Ex ia IIC T4 according to the European standards EN 60079 0 and EN 60079 11 with the following limits Rated max voltage Ui 3 8 V Short circuit current li 1 4 A Maximum RF output power 2 W Max rates in IIA and IIB class Supply power to the transmitter by means of an apparatus certified for the protection mode Ex ia IIA B T4 according to the European standards EN 60079 0 and EN 60079 11 with the following limits Max rates in IIA and IIB class Rated max voltage Ui 4 2 V Short circuit current li 2 5 A Maximum RF output power 2 W With the above Ui and li parameters the component is suitable to be used in equipment with the following class Ambient Temperature Temperature Class Table 1 F 5 ai F A rr 2 E ak j rai e Se eT eee EH K ke Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 79 of 81 7 Ei Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 Antenna The system antenna used for this transmitter must be installed to provide a separation distance of at least 20 cm from
66. wireless solutions Teli GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 CR Gs a u KS t Ti wea a a Ka t a a bs i ER P 1 H P i i H Si y e KK SW wem 7 Making machines talk Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 APPLICABILITY TABLE PRODUCT Reproduction gegen without Telit Geet S p A written authorization All Rights Reserved Page 2 of 81 Telit eil GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 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 Telit makes every effort to ensure the quality of the information it makes available Notwithstanding the 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 Information Telit disclaims any and all responsibility for the application of the devices characterized in this document and notes that the application of the device must comply with the safety standards
67. y Number 10 Clear writing Ui 4 2V li 2 5A Ci 27 5uF Li 55 2nH 11 Clear writing of Production Country gt IMEI 123456789012345 HUE SSS TING LES eS ZEN AZ Limit conditions for safe use U al The component transmitters RF GE864 QUAD ATEX shall be mounted in other devices for the conformity of the product which respect the intrinsically safe parameters shown in the label b The component transmitters RF GE864 QUAD ATEX shall met to the instruments of communication with ATEX certification according the temperature class 14 minimum IMPORTANT NOTES The transmitters are certified for the use in areas with presence of gas or vapors group IC Hydrogen therefore they are suitable also for the use in areas with presence of gas or vapors group IIB Ethylene and IIA Propane The transmitters are certified for application with temperature class 14 therefore they are suitable also for higher temperature class T3 T4 Mounting and Installation Mounting and wiring operations in classified areas for explosive gas atmospheres must be executed accordingly to the current procedures and to the national and international standards e g EN 60079 14 only by qualified personnel specifically and completely trained For the handling mounting and wiring refer to the operator manual instructions F i p F P F j i iy A Di F D D d WE Ask k e gg Reproduction forbidden without Telit Communications S p A written a
68. y is from 500mAh to 1000mAh i e S a gle w e P d d St oC Brei A ee ZC Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved Page 32 of 81 aa Telit GE864 QUAD ATEX Hardware User Guide 1vv0300879 Rev 3 2011 04 06 6 3 2 Thermal Design Guidelines The thermal design for the power supply heat sink must be done with the following specifications e Average current consumption during transmission APWR level max 500mA e Average current consumption during transmission A PWR level min 100mA e Average current during Power Saving CFUN 5 from 1 5 to 3 9mA e Average current during idle Power Saving disabled 14mA NOTE The average consumption during transmissions depends on the power level at which the device is requested to transmit by the network The average 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 that the device absorbs current significantly only during calls If we assume that the device stays into transmission for short periods of time let us say few minutes and then remains for a quite long time in idle let us say one hour then the power supply has always the time to cool down between the calls and the heat sink could be smaller than the calculated one for 500mA maximum R

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