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Telit Wireless Solutions GE864 User's Manual

1. pr J GEN ell FA Lac P oF O AP Section A A The size of the tray is 329 x 176mm NOTE These trays can withstand at the maximum temperature of 65 C eae el Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 65 of 69 Ee Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 12 2 1 GE864 orientation on the tray Ref No rounded corner on module s printed circuit board FCC ID RIZGES64 IC 5131A GE864 tite 2305 Q MADE KO The modules on the tray are oriented as shown in A and the tray is oriented toward left as shown in B J G9XN 12 2 2 Moisture sensibility The level of moisture sensibility of GE864 module is 3 in according with standard IPC JEDEC J STD 020 take care all the relatives requirements for using this kind of components 5 Ae A SE e eg e E E m Reproduction forbidden without Telit Communications S p A written authorization All Rights R
2. 3 1 1 BGA Balls Layout TOP VIEW A B c D E F G H J K L 1 D PIO 19 PIO 0 PIO CHARGE BA BA D 2 RESET PIO 0 VRTC CHARGE D BA BA D 3 PIO 04 PIO 20 PIO_10 D D D 4 S PIO 14 SIMVCC PIO e D Antenna 5 F te VAUX1 PIO PIO D 6 D F 0 0 PIO_16 D D 7 s DAC_OUT Aasa PIO_18 8 E PUES PIO i i PWRMON 9 2 gt PIO_09 SIMRST Ge 10 SIMCLK SIMIO RX TRACE PIO PIO 11 D SIMIN TX_TRACE D ADC_IN3 ADC_IN2 ADC_IN1 PIO_08 D SR j KR e r n Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved LA 7 es ABA page 13 of 69 PA e GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 AUDIO Signals balls SIM CARD interface balls TRACE Signals balls Prog data Hw Flow Control signals balls DAC and ADC signals balls Ss MISCELLANEOUS functions signals balls TELIT GPIO balls POWER SUPPLY VBATT balls POWER SUPPLY GND balls RESERVED Ta T eS ey Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 14 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 4 Hardware Commands 4 1 Turning ON the GE864 QUAD PY To turn on the GE864 QUAD PY the pad ON must be tied low for at least 1 second and then released The maximum current
3. 12 1 8 GE864 Solder reflow CO Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 The following is the recommended solder reflow profile o r TTT Temperature ts Preheat 25 Critical Zone T to Tp sitim irn enm t 25 C to Peak Time gt gt IPC O20b 5 1 Profile Feature Average ramp up rate T to Tp Preheat 8 Temperature Min Tsmin 8 Temperature Max Tsmax Time min to max ts Tsmax to TL Ramp up Rate Time maintained above 8 Temperature TL Time tL Peak Temperature Tp Time within 5 C of actual Peak Temperature tp Ramp down Rate Time 25 C to Peak Temperature Pb Free Assembly 3 C second max 150 C 200 C 60 180 seconds 3 C second max 217 C 60 150 seconds 245 0 5 C 10 30 seconds 6 C second max 8 minutes max NOTE All temperatures refer to topside of the package measured on the package body surface NOTE GE864 module can accept only one reflow process Reproduction forbidden without Telit Communica 7 Qo Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 12 2 Packing system The Telit GE864 modules are packaged on trays of 20 pieces each This is especially suitable for the GE864 according to SMT processes for pick amp place movement requirements C
4. ADC_IN3 available on Ball G11 and Pin 21 of PL102 on EVK2 Board CS1152 11 2 2 Using ADC Converter An AT command is available to use the ADC function The command is ATHADC 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 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 12 Mounting the GE864 on your Board 12 1General The Telit GE864 modules have been designed in order to be compliant with a standard lead free SMT process 12 1 1 Module finishing amp dimensions a O O O O OO O O p oo booo 00000 00000 0 0 O O O O O O 9 o e e o 9 o 6 e o o ooooocdooooo I 9000900000 O O 000 OO oo oO oO o o De Hg MD ae O O O Lead free Alloy Surface finishing Sn Ag Cu for all solder pads Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 58 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 12 1 2 Recommended foot print for the application GE864 30 10 0000000000 0000000000 0000000000 a DOO 0000 0 0 O0 e 0000000000 S 0000080000 0000000000 0 8 585 0 05 Ko KOKO ko ih TODO OO O E 1 oOo OO OO O 000ooooooo 2 59 page 59 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 12 1 3 Suggested Inhibit Area In or
5. E7 C103 TXD l Serial data input TXD from DTE CMOS 2 8V H8 C104 RXD O Serial data output to DTE CMOS 2 8V B7 C108 DTR ee for Data terminal ready signal DTR from CMOS 2 8V F7 C105 RTS Ge for Request to send signal RTS from CMOS 2 8V F6 C106 CTS O Output for Clear to send signal CTS to DTE CMOS 2 8V D9 C109 DCD o SE for Data carrier detect signal DCD to CMOS 2 8V E11 C107 DSR O Output for Data set ready signal DSR to DTE CMOS 2 8V B6 C125 RING O Output for Ring indicator signal RI to DTE CMOS 2 8V DAC and ADC On this line a maximum of 10nF bypass capacitor is allowed 7 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 Ball Signal UO Function Internal PULL UP Type C7 DAC_OUT AO Digital Analog converter output D A J11 ADC_IN1 Al Analog Digital converter input A D H11 ADC_IN2 Al Analog Digital converter input A D G11 ADC_IN3 Al Analog Digital converter input A D Miscellaneous Functions A2 RESET l Reset input E2 VRTC AO VRTC Backup capacitor Power D8 STAT LED O Status indicator led CMOS 1 8V G1 CHARGE Al Charger input Power G2 CHARGE Al Charger input Power J5 ON OFF HANGAN SUE Man Pull up to VBATT D5 VAUX1 Power output for external accessories L8 PWRMON O Power ON Monitor CMOS 2 8V L4 Antenna O Antenna output 50 ohm RF D7 DVI2 CLK DVI2 CLK Digital Voice Interface 4 7K CMOS 2 8 GPIO G4 TGPIO 12 I O Telit GPIO12 Configurable GPIO CMOS 2 8V C2 TGPIO 03 I O Telit GPI003 Configurable GPIO
6. This last phase is not implemented in the GE864 QUAD PY internal charging algorithm so that the battery once charged is left discharging down to a certain threshold so that it is cycled from full charge to slight discharge even if the battery charger is always inserted This guarantees that anyway the remaining charge in the battery is a good percentage and that the battery is not damaged by keeping it always fully charged Li lon rechargeable battery usually deteriorate when kept fully charged Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 Last but not least in some applications it is highly desired that the charging process restarts when the battery is discharged and its voltage drops below a certain threshold GE864 QUAD PY internal charger does it As you can see the charging process is not a trivial task to be done moreover all these operations should start only if battery temperature is inside a charging range usually 5 C 45 C The GE864 QUAD PY measures the temperature of its internal component in order to satisfy this last requirement it s not exactly the same as the battery temperature but in common application the two temperature should not differ too much and the charging temperature range should be guaranteed NOTE For all the threshold voltages inside the GE864 QUA
7. Guide 1vv0300694 Rev 10 10 06 08 9 2 OUTPUT LINES Speaker naan RA 42 9 2 1 Shorn descriptio BEE 42 9 2 2 Output Lines Characten8ti6S 0 ANG GANAN GANAN GAAN 43 9 3 SIM Holder Implementation esssssssesssssessseeeeene nennen nnn nnn nnn nnn nnne nnns nnns 43 10 General Purpose NO aaa orcas PEE EMI MINE NAN ANAN UNAHAN 44 10 1 GPIO Logic levels c 46 10 2 Using a GPIO Pad as INPUT E 47 10 3 Using a GPIO Pad as QUTPUT amak Nanana nanga 47 10 4 Using the RF Transmission Control GPIQ4 eese 48 10 5 Using the RFTXMON Output GPIO5 iaasa AKA AA Fo oxi F6 ca ace 48 10 6 Using the Alarm Output GPIOG Luna AARAL 48 10 7 Using the Buzzer Output GP OT Kama 49 10 8 Magnetic Buzzer Concepts dagegen deeegeg ebee gege EES AGA 50 10 8 1 Short DSSCKIPUON eR 50 10 8 2 Frequency BelhlavIQUt 2 cucine tei ette e reiecit de ha ee aHa ee e kh AG 51 10 8 3 Power Supply Infl eriCe dr rene teen nea cene rta rene re ERR AA 51 Jr aa CL AA E EEEE EOE E EEE 51 10 8 5 Working Current INMIUENTS nsii ae EE A eE a eene e aai 51 10 9 Using the Temperature Monitor Function a aaa 52 10 9 1 Short Description m 52 10 92 Allowed GPIO TE 52 10 10 Indication of network service availability nnn 53 10 11 RTC Bypass OUL seco ANAKAN 54 10 12 VAUXT power OUTPUE iieri einn uon nasaan ru eh p Eck uo ERR a EY n ex P Res n usd une
8. NANANG 54 ilerum per 55 11 1 DAG eu TTT 55 11 1 1 Bre jojo HE 55 11 42 Enabling DAG cierto ene ee e Ie RU ha edid edd e ER Geta edd de an 56 TL Wow Pass Filter Example eret en neant nes ANA REM ea n Rte La 56 112 ADC 650 71 111 MR 57 11 2 1 Bree HIS 57 11 222 Using ADC Converter EE 57 12 Mounting the GE864 on your Board eene nnns 58 ke ECIAM EL 58 12 1 4 Module finishing amp dimensions enne nnne nennen trennen 58 12 1 2 Recommended foot print for the application GEOGA cc cceccccesseeeeesneeeeeeseeeeeeneeeeeeseeeesenas 59 12 13 Suggested Inhibit Area icut eere rh ceils eee th aee ha Re Ho Cha e ceu SR dade e ERR eu AE 60 12 1 4 Debug of the GE864 in production enemies 61 E WEE 61 12 16 POB pad E BEE 62 Reproduct idi E d di r pi mr dl NG m Y d Ls DEZ ion forbidden without Telit Communications S p A written authorization All Rights Reserved page 4 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 IAE MCI 63 12 1 8 GE864 Solder refiow eene emere ennerrnen nennen enr renes ens 64 12 2 PACKING Systemi aai aaa AA AA 65 12 2 1 GE864 orientation on the tray iussi censere dd a d dd dd a dd 66 12 2 2 Moisture sensibility EE 66 13 Conformity Assessment Issues aaa 6
9. Power Buffers they can directly drive a 16Q speaker in differential balanced or single ended unbalanced operation mode FS acronym of Full Scale It is equal to OdB the maximum Hardware Analog Receive Gain of BaseBand Chip The EAR MT audio path should be used for handset function while the EAR HF audio path is suited for hands free function car kit Both receiver outputs are B T L type Bridged Tie Load and the OEM circuitry shall be designed bridged to reduce the common mode noise typically generated on the ground plane and to get the maximum power output from the device however also a single ended circuitry can be designed for particular OEM application needs Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved l page 42 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 9 2 2 Output Lines Characteristics EAR MT Differential Line out Drivers Path Line Coupling DC Line Type Bridged Output load resistance 2140 Internal output resistance 4 Q typical Signal bandwidth 150 4000 Hz 3 dB Differential output voltage 328mVrms 16 O 12dBFS SW volume level step 2dB Number of SW volume steps 10 EAR_HF Power Buffers Path Line Coupling DC Line Type Bridged Output load resistance 2140 Internal output resistance 40 gt 1 70 Signal bandwidth 150 4000 Hz 3 dB Max Differential output voltage 131
10. QUAD PY is unconditionally shut down without doing any detach operation from the network where it is registered This behaviour is not a proper 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 s 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 PY Use the ON OFF signal to perform this function or the AT SHDN command Reset Signal Operating levels Signal Min Max RESET Input high 2 0V 2 2V RESET Input low OV 0 2V 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 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 8 Serial Ports The serial port on the Telit GE864 QUAD PY is the core of the interface between the module and OEM hardware 2 serial ports are available on the module e MODE
11. Restart NY impulse A A A N eO 777 GND ue PS C T E 7 2 m Y z uae Ol Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 17 of 69 7 Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 NOTE don t use any pull up resistor on the RESET line nor any totem pole digital output Using pull up resistor may bring to latch up problems on the GE864 QUAD PY power regulator and improper functioning of the module The line RESET must be connected only in open collector configuration TIP The unconditional hardware Restart should be always implemented on the boards and software should use it fb as an emergency exit procedure For example Let s assume you need to drive the RESET pad with a totem pole output of a 3 5 V microcontroller uP_OUT2 RESET 3 ER BCG47BW 507 323 1F5 375 MI 1 THEE 134 BND This signal is internally pulled up so the pin can be left floating if not used page 18 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 o Power Supply The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product overall performances hence read carefully the requirements and the guidelines that will follow for a proper design 5 1 Power Supply Requirements Nominal S
12. of 69 wireless solutions GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 12 1 6 PCB pad design Non solder mask defined NSMD type is recommended for the solder pads on the PCB Recommendations for PCB pad dimensions Ball pitch mm 29 Solder resist opening diameter A mm 1 150 Metal pad diameter B mm 1 0 05 Placement of microvias not covered by solder resist is not recommended inside the Solder resist opening unless the microvia carry the same signal of the pad itself Reproduction forbidden without Telit Communications S p A written authorization All Rights page 62 of 69 wireless solutions GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 Holes in pad are allowed only for blind holes and not for through holes Recommendations for PCB pad surfaces Finish Layer thickness um Properties Electro less Ni 3 7 good solder ability protection high Immersion Au 0 05 0 15 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 of tin lead solder paste on the described surface plating is better compared to lead free solder paste 12 1 7 Solder paste Lead free Solder paste Sn Ag Cu Reprod cti n forbidden without Telit Communications S p A written authorization All Rights Reserved page 63 of 69
13. to disable the Transmitter when the GPIO is set to Low by the application In the design is necessary to add a pull up resistor 47K to PWRMON 10 5 Using the RFTXMON Output GPIO5 The GPIO5 pin when configured as RFTXMON Output is controlled by the GE864 QUAD PY module and will rise when the transmitter is active and fall after the transmitter activity is completed 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 sec after last TX burst 10 6 Using the Alarm Output GPIO6 The GPIO6 pad when configured as Alarm Output is controlled by the GE864 QUAD PY 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 GE864 QUAD PY 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 GE864 QUAD PY 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 z DEZ E tions S p A written authorization All Rights Reserved Reproduction forbidden without Telit Co
14. 0 mV typ open circuit Max Single Ended output voltage 656 mV typ open circuit SW volume level step 2dB Number of SW volume steps 10 For more detailed information about audio please refer to the Audio Settings Application Note 80000NT10007a 9 3 External SIM Holder Implementation Please refer to the related User Guide SIM Holder Design Guides 80000NT 100012 E 2 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 43 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 General Purpose I O The general purpose UO 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 PY firmware and acts depending on the function implemented For Logic levels please refer to chapter 7 The following GPIO are available on the GE864 QUAD and GE864 PY A Kpag Default SEI Ball Signal O Function Type output State ON OFF during Note current state Reset C1 TGPIO 01 W O GPIOO1 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 E6 TGPIO 02 W O GPIO02 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 EE C2 TGPIO 03 I O GPIO03 Configurable GPIO CMOS2
15. 1 489 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 The GE864 QUAD PY module is conform with the following US Directives e Use of RF Spectrum Standards FCC 47 Part 24 GSM 1900 e EMC Electromagnetic Compatibility Standards FCC47 Part 15 To meet the FCC s RF exposure rules and regulations The system antenna s used for this transmitter must be installed to provide a separation distance of at least 20 cm from all the persons and must not be co located or operating in conjunction with any other antenna or transmitter The system antenna s used for this module must not exceed 3 dBi for mobile and fixed or mobile operating configurations 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 page 67 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 14 SAFETY RECOMMANDATIONS READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required The use of this product may be dangero
16. 31N T3OUT t RS232 1 4C or gt ra T4OUT OU am RS232 1 4C 3 cs Jl tsm TSOUT O Dan RS232 1 4C os 1 RIOUTS RIS C C riour RHN os RS232 1 4D 25 DIR 4 X mour ROIN opm RS232 1 4D DD lt 40 mour R3IN Ham RS232 1 4C 3vo 13 3vo ER m O 15 14 MBAUD saone O o D RS232 LEVEL TRSANSLATOR The RS232 serial port lines are usually connected to a DB9 connector with the following layout END page 36 of 69 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 8 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 sets of signals As for the RS232 translation there are a multitude of single chip translators For example a possible translator circuit for a 5V TRANSMITTER RECEIVER can be TCTWZS34FK TAD AY T40 2 AY 2 By TO TELIT TO DEM HABDWABE Tex MODULE Hat Dy BxD 2 HVv T E 7SZU07AFE GMO TIP This logic IC for the level translator and 2 8V pull ups not the 5V one can be powered directly from VAUX line fb of the GE864 QUAD PY Note that the TC7SZ07AE has open drain output therefore the resistor R2 is mandatory La Sa Reproduction forbidden without Telit C
17. 64 Hardware User Guide 1vv0300694 Rev 10 10 06 08 6 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 6 1 GSM Antenna Requirements As suggested on the Product Description the antenna and antenna line on PCB for a Telit GE864 QUAD PY device shall fulfill the following requirements ANTENNA REQUIREMENTS Frequency range Depending by frequency band s provided by the network operator the customer shall use the most suitable antenna for that those band s Bandwidth 70 MHz in GSM850 80 MHz in GSM900 170 MHz in DCS amp 140 MHz PCS band Gain Gain lt 3dBi Impedance 50 ohm Input power gt 2 W peak power VSWR absolute lt 10 1 max VSWR lt 2 1 recommended When using the Telit GE864 QUAD PY since there s no antenna connector on the module the antenna must be connected to the GE864 QUAD PY 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 PY then a PCB line is needed in order to connect with it or with its connector Reproduction forbidden without Telit Communications S p A written authorization All Rights ce ee page 28 of 69 O Telit GE864 Hardware User Guid
18. 7 14 SAFETY RECOMMANDATION DAA ANA 68 15 Document Change LOG eener 69 page 5 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 DISCLAIMER The information contained in this document is the proprietary information of Telit Communications S p A and its affiliates TELIT The contents are confidential and any disclosure to persons other than the officers employees agents or subcontractors of the owner or licensee of this document without the prior written consent of Telit is strictly prohibited 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 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 application note All rights reser
19. 8V 1uA 1mA INPUT 0 Alternate function B3 TGPIO 04 I O GPIO04 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 RF Transmission Control K8 TGPIO 05 I O GPIO05 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 E B5 TGPIO 06 I O GPIOO06 Configurable GPIO CMOS2 8V 1uA 1mA INPUT Pict 01 1 EE L9 TGPIO 07 I O GPIOO07 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 Bas K11 TGPIO 08 I O GPIO08 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 C9 TGPIO 09 I O GPIO09Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 H3 TGPIO 10 I O GPIO10 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 Di TGPIO 11 I O GPIO11 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 G4 TGPIO 12 WO GPIO12 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 K10 TGPIO 13 I O GPIO13 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 B4 TGPIO 14 I O GPIO14 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 F5 TGPIO 15 WO GPIO15 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 H6 TGPIO 16 I O GPIO16 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 H5 TGPIO 17 I O GPIO17 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 K7 TGPIO 18 I O GPIO18 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 B1 TGPIO 19 I O GPIO19 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 C3 TGPIO 20 W O GPIO20 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 0 L10 TGPIO 21 I O GPIO21 Configurable GPIO CMOS2 8V 1uA 1mA INPUT 1 CMOS 1 8V E8 TGPIO 22 I O GPIO22 Configurable GPIO not 2 8V 1uA 1mA INPUT 0 page 44 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 N
20. A C2 TGPIO 03 GPI003 Configurable GPIO CMOS 2 8V 1uA 1mA K11 TGPIO 08 GPIOO08 Configurable GPIO CMOS 2 8V 1uA 1mA C9 TGPIO 09 GPIOO9 Configurable GPIO CMOS 2 8V 1uA 1mA H3 TGPIO 10 GPIO10 Configurable GPIO CMOS 2 8V 1uA 1mA D1 TGPIO 11 GPIO11 Configurable GPIO CMOS 2 8V 1uA 1mA G4 TGPIO 12 GPIO12 Configurable GPIO CMOS 2 8V 1uA 1mA K10 TGPIO 13 GPIO13 Configurable GPIO CMOS 2 8V 1uA 1mA B4 TGPIO 14 GPIO14 Configurable GPIO CMOS 2 8V 1uA 1mA F5 TGPIO 15 GPIO15 Configurable GPIO CMOS 2 8V 1uA 1mA H6 TGPIO 16 GPIO16 Configurable GPIO CMOS 2 8V 1uA 1mA H5 TGPIO 17 GPIO17 Configurable GPIO CMOS 2 8V 1uA 1mA K7 TGPIO 18 X GPIO18 Configurable GPIO CMOS 2 8V 1uA 1mA B1 TGPIO 19 GPIO19 Configurable GPIO CMOS 2 8V 1uA 1mA C3 TGPIO 20 GPIO20 Configurable GPIO CMOS 2 8V 1uA 1mA CMOS 1 8V not 2 8V E8 TGPIO 22 GPIO22 Configurable GPIO 1uA 1mA The set command could be used also with one of the following GPIO but in that case the alternate function is not usable TGPIO 02 GPIO02 Configurable GPIO CMOS 2 8V 1uA 1mA Alternate function JDR B3 TGPIO 04 GPI004 Configurable GPIO CMOS2 8V 1uA 1mA ANTES Onus RF Transmission Control Alternate function RFTXMON L9 TGPIO 07 GPIOO07 Configurable GPIO CMOS 2 8V 1uA 1mA Alternate function BUZZER K8 TGPIO 05 GPIOO05 Configurable GPIO CMOS 2 8V 1uA 1mA Reprod cti n forbidden without Telit Communications S p A written authorization All Rights Rese
21. CMOS 2 8V B3 TGPIO_04 IER E CMOS 2 8V C3 TGPIO 20 I O Telit GPIO20 Configurable GPIO CMOS 2 8V B4 TGPIO 14 VO Telit GPIO14 Configurable GPIO CMOS 2 8V D1 TGPIO_11 VO Telit GPIO11 Configurable GPIO CMOS 2 8V B1 TGPIO_19 I O Telit GPIO19 Configurable GPIO CMOS 2 8V C1 TGPIO 01 UO Telit GPIO01 Configurable GPIO CMOS 2 8V K7 TGPIO 18 uo E SE CMOS 2 8V H5 TGPIO 17 uo Te ates oe GAIO EME US CMOS 2 8V F5 TGPIO_15 I O Telit GPIO15 Configurable GPIO CMOS 2 8V Kit TGPIO_08 I O Telit GPIO08 Configurable GPIO CMOS 2 8V B5 TGPIO 06 ALARM I O Telit GPIOO6 Configurable GPIO ALARM CMOS 2 8V C9 TGPIO 09 I O Telit GPIO09 GPIO UO pin CMOS 2 8V E6 TGPIO 02 JDR I O Telit GPIOO2 UO pin Jammer detect report CMOS 2 8V L9 TGPIO 07 BUZZER I O Telit GPIOO7 Configurable GPIO Buzzer CMOS 2 8V H6 TGPIO_16 I O Telit GPIO16 Configurable GPIO CMOS 2 8V K10 TGPIO_13 VO Telit GPIO13 Configurable GPIO CMOS 2 8V K8 TGPIO_05 RFTXMON I O EE Configurable GPIO Transmitter CMOS 2 8V L10 TGPIO_21 I O Telit GPIO21 Configurable GPIO CMOS 2 8V ER TGPIO 22 VO Telit GPIO22 Configurable GPIO ean H3 TGPIO 10 o Telit GPIO10 Configurable GPIO DVI2_TX CMOS 2 8V Digital Voice Interface Power Supply page 10 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 Ball Signal UO Function Internal PULL UP Type J1 VBATT Main power supply Power K1 VBATT Main power supply Power J2 VBATT Main power supply Power K2 VBATT Main power supply Powe
22. D PY all thresholds are fixed in order to maximize Li lon battery performances and do not need to be changed NOTE In this application the battery charger input current must be limited to less than 400mA This can be done by using a current limited wall adapter as the power source NOTE When starting the charger from Module powered off the startup will be in CFUN4 to activate the normal mode a command AT CFUN 1 has to be provided This is also possible using the POWER ON There is also the possibility to activate the normal mode using the ON_OFF signal In this case when HW powering off the module with the same line ON_OFF and having the charger still connected the module will go back to CFUN4 NOTE It is important having a 100uF Capacitor to VBAT in order to avoid instability of the charger circuit if the battery is accidentally disconnected during the charging activity ei EN Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 25 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 5 2 2 Thermal Design Guidelines The thermal design for the power supply heat sink should be done with the following specifications e Average current consumption during transmission PWR level max 500mA e Average current consumption during transmission PWR level min 100mA e Average current during Power Saving CFUN 5 4mA e Average current
23. E 5 03 10 06 TGPIO23 now RESERVED modified low pass filter example for DAC 6 1 antenna characteristics ISSUE 6 23 10 06 Updated GE864 orientation on the tray layout ISSUE 7 08 02 07 Pin out updated Camera removed Added Stat Led and GPIO5 description added VAUX1 schematics updated for ON OFF reset level adapter 5V RS232 transceiver Power supply Modified Charger description ISSUE 8 07 06 07 Updated DISCLAIMER Added note on charger CFUN4 and ON_OFF Added Power consumptions table Added new table for GPIO status in Reset and Power on added RFTXMON timing Switching description modified in 12V input Source Power Supply Design Guidelines Added Alternate Function for GPIO4 Added BGA balls mechanical drawing ISSUE 9 19 06 07 Modified absolute maximum ratings added GPIO2 Alternate function description ISSUE 10 10 06 08 Par 02 Updated Mechanical drawings Par 3 1 Removed nominal values on Audio added DVI description Par 5 1 Added Supply Voltage Range Par 11 7 GPIO7 description added section on Buzzer description Par 9 Audio section removed a dedicated User guide on audio has been created Par 5 2 1 4 added note on Charger Par 8 1 tip on RXD pull up added EVK chapter removed EL J a AG f Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 69 of 69
24. GND Let s assume you need to drive the ON pad directly with an ON OFF button OND 4d uos Ce e p Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 16 of 69 Qo Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 4 2 Turning OFF the GE864 QUAD PY The turning off of the device can be done in three ways e by software command see GE864 QUAD PY Software User Guide e by hardware shutdown e by Hardware Unconditional Restart When the device is shut down by software command or by hardware shutdown it issues to the network a detach request that informs the network that the device will not be reachable any more 4 2 1 Hardware shutdown To turn OFF the GE864 QUAD PY 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 TIP To check if the device has powered off the hardware line PWRMON should be monitored When PWRMON goes low the device has powered off 4 2 2 Hardware Unconditional Restart To unconditionally Restart the GE864 QUAD PY the pad 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 A simple circuit to do it is RESET p N AAA V d NN Unconditional
25. HL leli wireless solutions GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 A LJ es sg t 5 NG Making machines talk Z Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 This document is relating to the following products GE GE GE864 QUAD 3990250648 GE864 PY 3990250650 Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 2 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 Contents ME o TE 7 2 GE864 Mechanical Dimensions cccccceeeeeeeeeeeeeeeeeeeeeeeeneeeeeeeeeeeeeeeeeeaaeeeeeeeeeeeeeenaes 8 3 GE564 module connections caccccccsirecivcccecctesssncccenstecasecatnsahecstecctecadeiiesatecinectiencieeadeciecem 9 3 1 PINOUT 9 3 1 1 BGA Balls Layolt ei edel Y ha t cu d 13 4 Hardware Commands eener 15 4 1 Turning ON the GE864 QUAD PY Jaan Gedeelt eu Edda iX Ra ag Eee d x ras SR ee iibi 15 4 2 Turning OFF the GE864 QUAD PY EE 17 4 2 1 Hardware shutdown R 17 4 2 2 Hardware Unconditional Restart 17 D EEN 19 5 1 Power Supply Requirements sa ANA NANA E NABA A ARA 19 5 2 General Design RUSS maana K AAH A KNA GANAN 20 5 2 1 See HR Le REI 20 5 2 1 1 5V input Source Power Supply Design Guidelines esses 20 5 2 1 2 12V input Source Power Sup
26. M SERIAL PORT e MODEM SERIAL PORT 2 DEBUG 8 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 Micro controller UART 2 8V 3V Universal Asynchronous Receive Transmit e Micro controller UART 5V or other voltages different from 2 8V Depending from the type of serial port on the OEM hardware a level translator circuit may be needed to make the system work The only configuration that doesn t need a level translation is the 2 8V UART The serial port on the GE864 QUAD PY 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 PY UART are the CMOS levels Absolute Maximum Ratings Not Functional Parameter Min Max Input level on any 0 3V 3 6V digital pad when on Input voltage on 0 3V 3 0 V analog pads when on Operating Range Interface levels 2 8V CMOS Level Min Max Input high level Vin 2 1V 3 3V Input low level Vi OV 0 5V Output high level Vox 2 2V 3 0V Output low level Vo OV 0 35V Wa j NE H ZA e 3 Ke E 4 sA n d uae Ol Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 33 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 The signals of the GE864 serial port are RS232 Pin Signal GE864 Name Us
27. Maintenance charge The qualification process consists in a battery voltage measure indicating roughly its charge status If the battery is deeply discharged that means its voltage is lower than the trickle charging threshold then the charge must start slowly possibly with a current limited pre charging process where the current is kept very low with respect to the fast charge value the trickle charging During the trickle charging the voltage across the battery terminals rises when it reaches the fast charge threshold level the charging process goes into fast charge phase During the fast charge phase the process proceeds with a current limited charging this current limit depends on the required time for the complete charge and from the battery pack capacity During this phase the voltage across the battery terminals still raises but at a lower rate Once the battery voltage reaches its maximum voltage then the process goes into its third state Final charging The voltage measure to change the process status into final charge is very important It must be ensured that the maximum battery voltage is never exceeded otherwise the battery may be damaged and even explode Moreover for the constant voltage final chargers the constant voltage phase final charge must not start before the battery voltage has reached its maximum value otherwise the battery capacity will be highly reduced The final charge can be of two different types constant voltage
28. Y from power polarity inversion This can be the same diode as for spike protection Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 21 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 An example of switching regulator with 12V input is in the below schematic it is split in 2 parts TO SWITCHING WIN OTP 12V INPUT RT201 MF R110 4 C230 C232 D202 InF luF 202 x Zem P6SMB30A s 30A 100V 50V 0805 1210 Doc LET TEL 17 a a a D D a H H 1202 N ur n RCR 110D 150 M 7 pec V IN 3 7 SS 8 ex ox Li Ino lt F 2 R210 C235 C236 C226 C227 10 0K 1000uF luF luF iour L xm XR 1 16V 16V sov sov 0603 10X16 0805 1210 CONT D GD aD GD GD R212 4 7K 596 0603 sov 4 7K 0603 5 0603 SWITCHING REGULATOR ci E ken AE d d PI Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 22 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 5 2 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 PY module The three cells Ni Cd or Ni MH 3 6 V Nom battery ty
29. age Number QUAD PY Pad Number 1 DCD D9 Data Carrier Detect Output from the GE864 QUAD PY that indicates dcd uart the carrier presence 2 RXD H8 Transmit line see Note Output transmit line of GE864 QUAD PY UART tx uart 3 TXD E7 Receive line see Note Input receive of the GE864 QUAD PY UART rx uart 4 DTR B7 Data Terminal Ready Input to the GE864 QUAD PY that controls the dtr_uart DTE READY condition 5 GND A1 F1 H1 L1 Ground ground H2 L2 J3 Komm 6 DSR E11 Data Set Ready Output from the GE864 QUAD PY that indicates dsr uart the module is ready 7 RTS F7 Request to Send Input to the GE864 QUAD PY that controls the rts uart Hardware flow control 8 CTS F6 Clear to Send Output from the GE864 QUAD PY that controls cts uart the Hardware flow control 9 RI ri uart B6 Ring Indicator Output from the GE864 QUAD PY that indicates the incoming call condition CO NOTE According to V 24 RX TX signal names are referred to the application side therefore on the GE864 side these signal are on the opposite direction TXD on the application side will be connected to the receive line here named TXD rx uart of the GE864 serial port and viceversa for RX 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 fb TIP In order to avoid noise or interferences on the RXD lines it is suggested to a
30. d on the sides over and under the antenna line on PCB with Ground avoid having other signal tracks facing directly the antenna line track e The 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 PY antenna line e Keep the antenna line far away from the GE864 QUAD PY power supply lines e If you have EM noisy devices around the PCB hosting the GE864 QUAD PY 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 f you don t have EM noisy devices around the PCB of GE864 QUAD PY by using a strip line on the superficial copper layer for the antenna line the line attenuation will be lower than a buried one page 29 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 6 3 GSM Antenna Installation Guidelines e Install the antenna in a place covered by the GSM signal e The Antenna must be installed to provide a separation distance of at least 20 cm from all persons and must not be co located or operating in conjunction with any other antenna or transmitter e Antenna shall not be installed inside metal cases e Antenna shall be installed also according Antenna manufacturer instructions Reproduction forbidden without Telit Co
31. d it shall be powered from a 2 8V 3 0V 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 stressing the module inputs at its maximum input voltage This can be acceptable for evaluation purposes but not on production devices 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 Ce Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 35 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 An example of level translation circuitry of this kind is 3vo One ei s S SES o as ps 26 o O E ome z i ae NG CH ez e 2 8 27 oS ss 281 c 5 ve a 25 cu Cl ong n S5 z a 55 U 8s 1 4 Q c2 v 3 U201 c2 Ge MAX3237EAI S SSOP 28 ED TIN TIOUT Geet RS232 DCD DH roe T2OUT oD xj RS232 1 4 Nu RING 2 T
32. d vice versa Summarizing Vpp 1 2 fol Vop gt fef The risk is that the f could easily fall outside of new bandwidth consequently the SPL could be much lower than the expected 10 8 4 Warning It is very important to respect the sense of the applied voltage never apply to the pin a voltage more positive than pin if this happens the diaphragm vibrates in the opposite sense with a high probability to be expelled from its physical position damaging the device forever 10 8 5 Working Current Influence In the component data sheet you will find the value of MAX CURRENT this represents the maximum average current that can flow at nominal 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 never reach the declared level or the oscillations will stop e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 9 Using the Temperature Monitor Function 10 9 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 TEMPMON command on AT Interface guide it raise to High Logic level a GPIO when the maximum temperature is reached 10 9 2 Allowed GPIO The ATZTEMPMON set command could be used with one of the following GPIO TGPIO 01 GPIO01 Configurable GPIO CMOS 2 8V 1uA 1m
33. dd a pull up resistor 100Kohm to 2 8V O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 8 2 RS232 level translation In order to interface the Telit GE864 with a PC com port or a RS232 EIA TIA 232 application a level translator is required This level translator must invert the electrical signal in both directions change the level from 0 3V to 15 15V Actually the RS232 UART 16450 16550 16650 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 Odriver 3 receiver NOTE The digital input lines working at 2 8VCMOS have an absolute maximum input voltage of 3 75V therefore the level translator IC shall not be powered by the 3 8V supply of the module Instea
34. der to easily rework the GE864 is suggested to consider on the application a 1 5mm Inhibit area around the module 1 5mm oooo00000000 O0O000000000 OGOO OOD OD oO E O 0 0 EL Ek Co EE o0 Qu 000000 00 0000900800000 OoO0000000000 000900000000 OOoooooooooo o OO 0000902040 oooocoogoooo 5mm Top View It is also suggested as common rule for an SMT component to avoid having a mechanical part of the application in direct contact with the module zu E e P li e Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 60 of 69 4 pd r Bia n H d E e GE de e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 12 1 4 Debug of the GE864 in production To test and debug the mounting of the GE864 we strongly recommend to foreseen test pads on the host PCB in order to check the connection between the GE864 itself and the application and to test the performance of the module connecting it with an external computer Depending by the customer application these pads include but are not limited to the following signals e TXD RXD ON OFF RESET GND VBATT TX TRACE RX TRACE PWRMON 12 1 5 Stencil Stencil s apertures layout can be the same of the recommended footprint 1 1 we suggest a thickness of stencil foil 2 120m ls En Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 61
35. during idle Power Saving disabled 24mA 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 s say few minutes and then remains for a quite long time in idle let s 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 RMS current or even could be the simple chip package no heat sink Moreover in the average network conditions the device is requested to transmit at a lower power level than the maximum and hence the current consumption will be less than the 500mA being 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 can be enough to ensure a good thermal condition and avoid overheating For the heat generated by the GE864 QUAD PY you can consider it to be during transmission 1W max during CSD VOICE calls and 2W max during class10 GPRS upload This generated heat will be mostly conducted to the g
36. e 1vv0300694 Rev 10 10 06 08 This line of transmission shall fulfill the following requirements ANTENNA LINE ON PCB REQUIREMENTS Impedance 50 ohm Max Attenuation 0 3 dB No coupling with other signals allowed Cold End Ground Plane of antenna shall be equipotential to the GE864 QUAD PY ground pins Furthermore if the device is developed for the US market and or Canada market it shall comply to the FCC and or IC approval requirements This device is to be 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 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 PY module Antennas used for this OEM module must not exceed 3dBi gain for mobile and fixed operating configurations 6 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 Surroun
37. eserved page 66 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 13 Conformity Assessment Issues The GE864 QUAD PY 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 Directive 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 PY module is conform 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 In order to satisfy the essential requisite of the R amp TTE 99 5 EC directive the GE864 QUAD PY 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 30
38. ge Interface levels 1 8V CMOS Level Min Max Input high level 1 6V 3 3V Input low level OV 0 4V Output high level 1 65V 2 2V Output low level OV 0 35V A 2 AG o D Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 46 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 2 Using a GPIO Pad as INPUT The GPIO pads when used as inputs can be connected to a digital output of another device and report its status provided this device has interface levels compatible with the 2 8V CMOS levels of the GPIO 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 10 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 GPIO7 O Base circuit of a push pull stage as eu Ead Ly Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 47 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 4 Using the RF Transmission Control GPIO4 The GPIO4 pin when configured as RF Transmission Control Input permits
39. h specific characteristics The antenna 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 bim ee Ce d Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 68 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 15 Document Change Log Revision Date Changes ISSUE 0 12 06 06 Release First ISSUE 0 ISSUE 1 22 11 05 Added notice on page 4 ISSUE 2 19 12 05 Added Paragr 10 Conformity Assessment Issues ISSUE 3 07 02 06 Added products order codes table Added Disclaimer Added Safety Recommendations ISSUE 4 07 09 06 Full Review of the manual Added ADC description Added DAC description Added Pin out and Process flow description Added Packaging ISSU
40. he use of the RESET line to start correctly the activity The preferable configuration is having an external supply for the buffer ie re kla Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 38 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 9 Audio Section Overview The Base Band Chip of the GE864 QUAD PY Telit Module provides two different audio blocks both in transmit Uplink and in receive Downlink direction MT lines should be used for handset function HF lines is suited for hands free function car kit These two blocks can be active only one at a time selectable by AXE hardware line or by AT command The audio characteristics are equivalent in transmit blocks but are different in the receive ones and this should be kept in mind when designing EXTERNAL AMPLIFIER ite B Fully Differential Power Buffe Differential Line Out Drivers Audio Paths m i ns re Ead Ly Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 39 of 69 7 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 9 1 INPUT LINES Microphone 9 1 1 Short description The Telit GE864 QUAD PY provides two audio paths in transmit section Only one of the two paths can be ac
41. ic circuit consisting of a permanent magnet an iron core a high permeable metal disk and a vibrating diaphragm e Diaphragm When a direct current is applied Drawing of the Magnetic Buzzer The disk and diaphragm are attracted to the core by the magnetic field When an oscillating signal is moved through the coil it produces a fluctuating magnetic field which vibrates the diaphragm at a frequency of the drive signal Thus the sound is produced relative to the frequency applied Input Signal Vibration Shape of Resonator Diaphragm movement i a Aka Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 8 2 Frequency Behaviour The frequency behavior represents the effectiveness of the reproduction of the applied signals Because its performance is related to a square driving waveform whose amplitude varies from OV to Vpp if you modify the waveform e g from square to sinus the frequency response will change 10 8 3 Power Supply Influence Applying a signal whose amplitude is different from that suggested by manufacturer the performance change following the rule if resonance frequency f increases amplitude decreases Because of resonance frequency depends from acoustic design lowering the amplitude of the driving signal the response bandwidth tends to become narrow an
42. mmunica page 48 of 69 7 Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 7 Using the Buzzer Output GPIO7 As Alternate Function the GPIO7 is controlled by the firmware that depends on the function implemented internally This setup places always the GPIO7 pin in OUTPUT direction and the corresponding function must be activated properly by AT SRP command refer to AT commands specification Also in this case the dummy value for the pin state can be both 0 or 7 Send the command AT GPIO 7 1 2 lt cr gt Wait for response OK Send the command AT SRP 3 The GPIO7 pin will be set as A fernate Function pin with its dummy logic status set to H GH value The Alternate function permits your application to easily implement Buzzer feature with some small hardware extension of your application as shown in the next sample figure TR2 TOME SMBT2907A Example of Buzzer s driving circuit 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 di i e 4 po S Mi i i D 7 E Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 49 of 69 Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 8 Magnetic Buzzer Concepts 10 8 1 Short Description A magnetic Buzzer is a sound generating device with a coil located in the magnet
43. mmunications S p A written authorization All Rights Reserved page 30 of 69 Qo Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 7 Logic level specifications Where not specifically stated all the interface circuits work at 2 8V CMOS logic levels The following table shows the logic level specifications used in the Telit GE864 QUAD PY interface circuits Absolute Maximum Ratings Not Functional Parameter Min Max Input level on any 0 3V 3 6V digital pin when on Input voltage on analog 0 3V 3 0V pins when on Operating Range Interface levels 2 8V CMOS Level Min Max Input high level 2 1V 3 3V Input low level OV 0 5V Output high level 2 2V 3 0V Output low level OV 0 35V For 1 8V signals Operating Range Interface levels 1 8V CMOS Level Min Max Input high level 1 6V 3 3V Input low level OV 0 4V Output high level 1 65V 2 2V Output low level OV 0 35V Current characteristics Level Typical Output Current 1mA Input Current 1uA Reproduction forbidden without Telit Communications S p A written authorization All Rights h page 31 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 7 1 Reset signal Signal Function UO Boa Ball RESET Phone reset A2 RESET is used to reset the GE864 QUAD PY modules Whenever this signal is pulled low the GE864 QUAD PY is reset When the device is reset it stops any operation After the release of the reset GE864
44. nterno dell applicazione dell utente dovr rispettare le indicazioni progettuali descritte in questo manuale DE Die integration des GE864 QUAD PY GSM GPRS Mobilfunk Moduls in ein Ger t mu gem der in diesem Dokument beschriebenen Kunstruktionsregeln erfolgen SL Integracija GSM GPRS GE864 QUAD PY modula v uporabni ki aplikaciji bo morala upo tevati projektna navodila opisana v tem piro niku SP La utilizaci n del modulo GSM GPRS GE864 QUAD PY debe ser conforme a los usos para los cuales ha sido dese ado descritos en este manual del usuario FR L int gration du module cellulaire GSM GPRS GE864 QUAD PY dans l application de l utilisateur sera faite selon les r gles de conception d crites dans ce manuel HE ibon Dem Sw IDN TYAN np T5052 MUNA neni NA nu Wand GEINT on Dy GE864 QUAD PY 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 nor 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 s 7 Qo Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 2 GE864 Mechanical Dimensions The Telit GE864 mod
45. ommunications S p A written authorization All Rights Reserved page 37 of 69 7 Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 NOTE The UART input line TXD rx uart of the GE864 QUAD PY is NOT internally pulled up with a resistor so there may be the need to place an external 47KQ pull up resistor either the DIR dtr uart and RTS rts_uart input lines are not pulled up internally so an external pull up resistor of 47KO may be required A power source of the internal interface voltage corresponding to the 2 8VCMOS high level is available at the VAUX pin on the connector A maximum of 9 resistors of 47 KO pull up can be connected to the PWRMON pin provided no other devices are connected to it and the pulled up lines are GE864 QUAD PY input lines connected to open collector outputs in order to avoid latch up problems on the GE864 QUAD PY Care must be taken to avoid latch up on the GE864 QUAD PY 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 PY functionality NOTE The input lines working at 2 8VCMOS can be pulled up with 47KQ resistors that can be connected directly to the VAUX line provided they are connected as in this example In case of reprogramming of the module has to be considered t
46. or pulsed GE864 QUAD PY uses constant voltage The constant voltage charge proceeds with a fixed voltage regulator very accurately set to the maximum battery voltage and hence the current will decrease while the battery is becoming charged When the charging current falls below a certain fraction of the fast charge current value then the battery is considered fully charged the final charge stops and eventually starts the maintenance The pulsed charge process has no voltage regulation instead the charge continues with pulses Usually the pulse charge works in the following manner the charge is stopped for some time let s say few hundreds of ms then the battery voltage will be measured and when it drops below its maximum value a fixed time length charging pulse is issued As the battery approaches its full charge the off time will become longer hence the duty cycle of the pulses will decrease The battery is considered fully charged when the pulse duty cycle is less than a threshold value typically 1096 the pulse charge stops and eventually the maintenance starts The last phase is not properly a charging phase since the battery at this point is fully charged and the process may stop after the final charge The maintenance charge provides an additional charging process to compensate for the charge leak typical of a Li lon battery It is done by issuing pulses with a fixed time length again few hundreds of ms and a duty cycle around 5 or less
47. ot all GPIO pads support all these three modes e GPIO2 supports all three modes and can be input output Jamming Detect Output Alternate function e GPIO4 supports all three modes and can be input output RF Transmission Control Alternate function e GPIO5 supports all three modes and can be input output RFTX monitor output Alternate function e GPIO6 supports all three modes and can be input output alarm output Alternate function e GPIO7 supports all three modes and can be input output buzzer output Alternate function pict01 ch1 ON OFF 2sec ch2 GPIO 06 bis ch2 chl GE864 22 TE Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 45 of 69 Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 1 GPIO Logic levels 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 GE864 QUADIPY interface circuits Absolute Maximum Ratings Not Functional Parameter Min Max Input level on any 0 3V 3 6V 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 Max Input high level 2 1V 3 3V Input low level OV 0 5V Output high level 2 2V 3 0V Output low level OV 0 35V For 1 8V signals Operating Ran
48. pes or 4V PB types MUST NOT BE USED DIRECTLY since their maximum voltage can rise over the absolute maximum voltage for the GE864 QUAD PY and damage it NOTE DON T USE any Ni Cd Ni MH and Pb battery types directly connected with GE864 QUAD PY Their use can lead to overvoltage on the GE864 QUAD PY 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 100 F 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 PY 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 capacity is from 500mAh to 1000mAh E NG Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved l page 23 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 5 2 1 4 Battery Charge control Circuitry Design Guidelines The charging process for Li lon Batteries can be divided into 4 phases e Qualification and trickle charging e Fast charge 1 constant current e Final charge constant voltage or pulsed charging e
49. ply Design Guidelines sssssssse esee 21 5 2 1 3 Battery Source Power Supply Design Guidelines sss 23 5 2 1 4 Battery Charge control Circuitry Design Guidelines e 24 5 2 2 Thermal Design Et ET EE 26 5 2 3 Power Supply PCB layout Guidelines AAA 27 EE EE 28 6 1 GSM Antenna Requirements n a roo raria rete ren eo EES Do Ia ID OE oo REPERI D aas ooa eaae EEN 28 62 GSM Antenna PCB line Guidelines 0 00020000000 a ua a a asasasasassasassssssssana 29 63 GSM Antenna Installation Guidelines 1 0 00 020000000 wssasasassssasasasasasasanunuaan 30 7 e TEE TE 31 EM 05 CR 32 4E ICI e EEN 33 8 1 MODEM SERIAL PORT 1I des ee Seege cocco Deele AA 33 8 2 IRS2Z32 level translation nA AA nya Yea rura 35 8 3 5V UART level translation 1o eric root eren ENEE NANANA 37 9 Audio Section Overview aseene 39 9 1 INPUT LINES Microph OOne NAI ae ore e ER ek Ee enano eee na Cu un eaa reco ern peau exa nuncu Ru 40 9 1 1 Short description A0 9 1 2 Input Lines Characteristics c cccccceceeeceecce cece cece ce ceceeaeceeeeeeesecaeaeeeeeeeeesecaeaeeeeeeeeeteeeeiceeeeeeeees 41 YA e fi T Le N A A WE 4 D B NG lt t g podus B Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 3 of 69 O Telit GE864 Hardware User
50. r A1 GND Ground Power F1 GND Ground Power H1 GND Ground Power L1 GND Ground Power H2 GND Ground Power L2 GND Ground Power J3 GND Ground Power K3 GND Ground Power L3 GND Ground Power K4 GND Ground Power K5 GND Ground Power D6 GND Ground Power K6 GND Ground Power L6 GND Ground Power A11 GND Ground Power F11 GND Ground Power L11 GND Ground Power RESERVED A10 A3 A4 A5 A6 A7 A8 A9 B10 B11 B2 B8 B9 C4 C8 D2 D3 E1 E10 E3 E4 E m d p mA en without Telit Communications S p A written authorization All Rights Reserved page 11 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 Ball Signal UO Function Internal PULL UP Type F2 F3 F4 G6 G7 H4 H7 J4 J6 J7 K9 L5 E5 L7 G5 G3 C6 F8 C5 NOTE RESERVED pins must not be connected NOTE If not used almost all pins should be left disconnected The only exceptions are the following pins pin signal J1 K1 J2 K2 VBATT A1 F1 H1 L1 H2 L2 J3 K3 L3 GND K4 K5 D6 K6 L6 A11 F11 L11 J5 ON OFF E7 TXD A2 RESET H8 RXD F7 RTS RTS should be connected to the GND on the module side if flow control is not used Re Si 7 2 A S g f NG m Y xm d Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 12 of 69 Qo Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08
51. r 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 doesn t have audio interface but only uses the data feature of the Telit GE864 QUAD PY then this noise is not so disturbing and power supply layout design can be more forgiving The PCB traces to the GE864 QUAD PY 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 The PCB traces connecting the Switching output to the inductor and the switching 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 The use of a good common ground plane is suggested The placement of the power supply on the board should 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 The power supply input cables should be kept separate from noise sensitive lines such as microphone earphone cables page 27 of 69 e Telit GE8
52. rential input resistance 50kO Differential input voltage lt 1 03Vpp 365MV ms Microphone nominal sensitivity 45 dBV ms Pa Analog gain suggested 20dB Echo canceller type Handset MIC HF 2nd differential microphone path Line Coupling AC Line Type Balanced Coupling capacitor 2 100nF Differential input resistance 50kQ Differential input voltage lt 65MV p 23MVims Microphone nominal sensitivity 45 dBV ms Pa Analog gain suggested 10dB Echo canceller type Car kit hands free WARNING AC means that the signals from microphone has to be connected to input lines of the module by a CAPACITOR which value must be gt 100nF Not respecting this constraint the input stage will be damaged Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 41 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 9 2 OUTPUT LINES Speaker 9 2 1 Short description The Telit GE864 QUAD PY provides two audio paths in receive section Only one of the two paths can be active at a time selectable by AXE hardware line or by AT command You must keep in mind the different audio characteristics of the receive blocks when designing gt the EAR MT lines EPN1 and EPP1 are the Differential Line Out Drivers they can drive an external amplifier or directly a 16 Q earpiece at 12dBFS gt the EAR HF lines EPPA1 2 and EPPA2 are the Fully Differential
53. round plane under the GE864 QUAD PY you must ensure that your application can dissipate it O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 5 2 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 The Bypass low ESR capacitor must be placed close to the Telit GE864 QUAD PY power input pads or in the case the power supply is a switching type it can be placed close to the inductor to cut the ripple provided the PCB trace from the capacitor to the GE864 QUAD PY is wide enough to ensure a dropless connection even during the 2A current peaks The protection diode must be placed close to the input connector where the power source is drained The 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 floo
54. rved page 52 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 10 Indication of network service availability The STAT LED pin status shows information on the network service availability and Call status In the GE864 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 Device off Fast blinking Net search Not registered Period 1s Ton 0 5s turning off Slow blinking Registered full service Period 3s Ton 0 3s Permanently on a call is active VBAIT R101 330 596 0603 LY M676 Q251 26 DL101 M676 TY 10K p o STAT LED ie re Ead um Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 53 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 10 11 RTC Bypass out 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 10 12 VAUXT power output A regulated power supply output is provided in order to
55. ser Guide 1vv0300694 Rev 10 10 06 08 11 1 2 Enabling DAC An AT command is available to use the DAC function The command is AT DAC lt enable gt lt value gt value scale factor of the integrated output voltage 0 1023 10 bit precision 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 NOTE The DAC frequency is selected internally D A converter must not be used during POWERSAVING 11 1 3 Low Pass Filter Example R1 R2 R3 P1 AAA AAA AAA P3 12k 12k 12k INPUT dac out OUTPUT Ci 10016 C2 100nF C4 2 100nF P2 8 P4 GND GND GND GND GND Wa j li 74 E ki pa re E d E E Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 56 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 11 2 ADC Converter 11 2 1 Description The on board A D 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 Min Max Units Input Voltage range 0 2 Volt AD conversion 11 bits Resolution lt 1 mV The GE864 QUAD PY module provides 3 Analog to Digital Converters The input lines are ADC_IN1 available on Ball J11 and Pin 19 of PL102 on EVK2 Board CS1152 ADC_IN2 available on Ball H11 and Pin 20 of PL102 on EVK2 Board CS1152
56. sign 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 PY e When using a 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 n any case the frequency and Switching design selection is related to the application to be developed due to the fact the switching frequency could also generate EMC interferences e For car PB battery the input voltage can rise up to 15 8V and this should 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 100 F 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 For Car applications a spike protection diode should be inserted close to the power input in order to clean the supply from spikes e A protection diode should be inserted close to the power input in order to save the GE864 QUAD P
57. sired output and a linear regulator can be used 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 PY 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 should be inserted close to the power input in order to save the GE864 QUAD PY from power polarity inversion O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 An example of linear regulator with 5V input is t5v input linear regulator 3 BV UZDI OUT LTI52ACO 5 INPUT t ee E H sow Raba I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I I d 5 bah wal Ceo i F stir NW 2 eg 1 D2201 f Ganz cape eng SENE co o t dour GMO 4 bi M I bessi 2 E FA f ES D is I I I I I I I I I I I 1 I I I 1 I I I I I I I I I I 1 I I I I z BS CUNT E KP s03 GHO Eu Log 5 Ady BaD ENE Hapi Ed B OPO 5 2 1 2 12V input Source Power Supply De
58. supply small devices from the module This output is active when the module is ON and goes OFF when the module is shut down The operating range characteristics of the supply are Operating Range VAUX1 power supply Min Typical Max Output voltage 2 75V 2 85V 2 95V Output current 100mA Output bypass capacitor 2 2uF inside the module dis E 3 J j gt nG UE a a eo ER BR FETU Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 54 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 11 DAC and ADC section 11 1 DAC Converter 11 1 1 Description The GE864 QUAD PY module provides a Digital to Analog Converter The signal named DAC OUT is available on BGA Ball C7 of the GE864 QUAD PY module and on pin 17 of PL102 on EVK2 Board CS1152 The on board DAC is a 10 bit converter able to generate a analogue value based 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 2 6 Volt Range 0 1023 Steps 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 obtain an analog voltage 7 Telit GE864 Hardware U
59. that can be drained from the ON pad is 0 1 mA A simple circuit to do it is ON Rl 7a pa Ba L AAA Ql V V V Ni j Power ON impulse koi V A N BEY R2 gr OND NOTE don t use any pull up resistor on the ON line it is internally pulled up Using pull up resistor may bring to latch up problems on the GE864 QUAD PY 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 with a or with a bar over the name NOTE The GE864 QUAD PY turns fully on also by supplying power to the Charge pad Module provided with a battery on the VBATT pads TIP To check if the device has powered on the hardware line PWRMON should be monitored After 900ms the line raised up the device could be considered powered on T m Lr i PWRMON line rises up also when supplying power to the Charge pad kla Reproduction forbidden without Telit Communications S p A written authorization All Rights h page 15 of 69 7 Qo Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 For example Let s assume you need to drive the ON pad with a totem pole output of a 3 5 V micro controller OP OUT1 ON 32 uP 0UT1 O E BC8B47BW 50T 323 Fs Wa Wn ov d L Is Power ON OFF inpulse
60. tive at a time selectable by AXE hardware line or by AT command You must keep in mind the different audio characteristics of the transmit blocks when designing The MIC MT audio path should be used for handset function while the MIC HF audio path is suited for hands free function car kit TIP being the microphone circuitry the more noise sensitive its design and layout must be done with particular care Both microphone paths are balanced and the OEM circuitry should be balanced designed to reduce the common mode noise typically generated on the ground plane However also an unbalanced circuitry can be used for particular OEM application needs TIP due to the difference in the echo canceller type the Mic MT audio path is suited for Handset applications while the Mic HF audio path is suited for hands free function car kit The Earphone applications should be made using the Mic HF audio path but DISABLING the echo canceller by software AT command If the echo canceller is left active with the Earphone then some echo might be introduced by the echo cancel algorithm NIS Reproduction forbidden without Telit Communications S p A written authorization All Rights h page 40 of 69 e Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 9 1 2 Input Lines Characteristics MIC MT 1st differential microphone path Line Coupling AC Line Type Balanced Coupling capacitor 2 100nF Diffe
61. ule overall dimension are DETAIL 1 SCALE 8 1 e Length 30 mm e Width 30 mm 0 25 2 9 0 15 e Thickness 2 9 mm N AN PIT III II SI SISI SII II TIPS OLL e NG 1j 5 d ENS LI D D Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 8 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 3 GE864 module connections 3 1 PIN OUT Ball Signal UO Function Internal PULL UP Type Audio H9 EAR_MT AO Handset earphone signal output phase Audio G10 EAR MT AO Handset earphone signal output phase Audio H10 EAR HFt AO Handsfree ear output phase Audio J10 EAR HF AO Handsfree ear output phase Audio J8 MIC MT Al Handset mic signal input phase Audio G9 MIC_MT Al Handset mic signal input phase Audio G8 MIC_HF Al Handsfree mic input phase Audio J9 MIC HF Al Handsfree mic input phase Audio F9 AXE l Handsfree switching 100K CMOS 2 8V SIM card interface C10 SIMCLK O External SIM signal Clock 1 8 3V E9 SIMRST O External SIM signal Reset 1 8 3V D10 SIMIO I O External SIM signal Data I O 1 8 3V C11 SIMIN l External SIM signal Presence active low 47K 1 8 3V D4 SIMVCC External SIM signal Power supply for the SIM 1 8 3V Trace D11 TX TRACE O TX Data for debug monitor CMOS 2 8V F10 RX TRACE l RX Data for debug monitor CMOS 2 8V Prog Data HW Flow Control
62. upply Voltage 3 8V Max Supply Voltage 4 2 Supply Voltage Range 3 4 4 2 The GE864 QUAD PY power consumptions are GE864 QUAD PY Mode Average mA Mode description IDLE mode Stand by mode no call in progress AT CFUN 1 23 9 Normal mode full functionality of the module AT CFUN 4 22 Disabled TX and RX module is not registered on the network Power saving CFUN 0 module registered on the network and can receive voice call or an SMS but it is not possible AT CFUN 0 or 720 356 to send AT commands module wakes up with an AT CFUN 5 i 2 unsolicited code call or SMS or rising RTS line CFUN 5 full functionality with power saving module registered on the network can receive incoming calls and SMS RX mode 1 slot in downlink 52 3 2 slot in downlink 65 2 GSM Receiving data mode 3 slot in downlink 78 6 4 slot in downlink 88 4 GSM TX and RX mode Min power level 78 1 GSM Sending data mode Max power level 200 1 GPRS class 10 TX and RX mode Min power level 123 7 GPRS Sending data mode Max power level 370 8 Worst best case depends on network configuration and is not under module control mr Te 7 ei D f NG m Y e e bet FS DEZ Reproduction forbidden without Telit Communications S p A written authorization All Rights Reserved page 19 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 The GSM system is made in a way that the RF transmission is not continuous else it is packed into b
63. ursts at a base frequency of about 216 Hz 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 electrical 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 TIP The electrical design for the Power supply should be made ensuring it will be capable of a peak current output of at least 2 A 5 2 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 5 2 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 5 2 1 1 5V input Source Power Supply Design Guidelines e The desired output for the power supply is 3 8V hence there s not a big difference between the input source and the de
64. us and has to be avoided in the following areas LI Where it can interfere with other electronic devices in environments such as hospitals airports aircrafts etc Q Where there is risk of explosion such as gasoline stations oil refineries etc 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 wit
65. ved 2006 2008 Telit Communications S p A Reproduction forbidden without Telit Communications S p A written authorization All Rights SZ page 6 of 69 O Telit GE864 Hardware User Guide 1vv0300694 Rev 10 10 06 08 1 Overview The aim of this document is the description of some hardware solutions useful for developing a product with the Telit GE864 QUAD PY module In this document all the basic functions of a mobile phone will be taken into account for each one of them a proper hardware solution will be suggested and eventually the wrong solutions and common errors to be avoided will be 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 given shall be used as a guide and a starting point for properly developing your product with the Telit GE864 QUAD PY module For further hardware details that may not be explained in this document refer to the Telit GE864 QUAD PY Product Description document where all the hardware information is reported NOTICE EN The integration of the GSM GPRS GE864 QUAD PY cellular module within user application shall be done according to the design rules described in this manual IT L integrazione del modulo cellulare GSM GPRS GE864 QUAD PY all i

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