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CC864-Dual Hardware User Guide R6

1. Parameters Descriptions Frequency range Cellular 824 849 MHz PCo 185071910 MEZ Power class Cellular Class PSs Class Nominal power 0 27 W 24 31 dBm 57 9 be yh a hi Communications S p A s written authorization All Rights Reproduction forbidden without Telit Reserved Page 7 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 1 4 4 gpsOne Receiver Specifications CC864 DUAL Qualcomm chipset QSC6055 is a Gen 7 device Parameters Range Notes bi 1575 42 Frequency range qu y g MHz Acquisition OCI CPS RF Conducted Sensitivity MSA 158 Senmsilicivity ls ceitimec at Asynchronous A GPS the measurement level the dBm lowest GPS signal level Acquisition S in dBm at the antenna Sensitivity MSA 159 port for which the device Synchronous A GPS can still detect an in dBm view satellite 50 of the Acquisition time Sensitivity MSA Synchronous A GPS ze Acquilsiltiom Tracking dBm w Sensitivity performance Sensitivity figures assume open sky Assistance dBm w antenna and 2 5dB Noise Cold Start EE Sensitivity dBm STAS Tracking Sensitivity Standalone or MSB dBm Accuracy in Open Sky Standalone TTFF Super Hot Warm 1s 29s 35s Cold Total number of SV available 160 lt 2 CHE 50 Open sky 1Hz tracking 30 SVs Support of Predicted Orbits ues Predicted Orbit CEP 50 Accuracy 5m 1 2 day
2. Le Cm e s Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 35 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Parameter Value Frequency range 1575 42 mw EPS I Bandwidth t 1 0238 Gain 1 5dBi Gain 4 5dBi Impedance 50 ohm Amplification 14dB Supply voltage MUSE ASSEN Cem 3 to 5 WV DC Current consumption 20mA Typical 40mA max 3 6 GPS Antenna Installation Guidelines Installation of the GPS antenna should follow the guidelines below The antenna should not be co located or operating in T conjunction with any other antenna or transmitter The antenna shall not be installed inside metal cases e The antenna shall be installed according to manufacturer instructions 3 7 Logic Level Specification Where not specifically stated the interface circuits work at 2 6V CMOS logic levels The following tables show the logic level specifications for the CC864 DUAL interface circuits Operating Rang Interface levels 2 6V CMOS Parameter Min Max VIH input high level 1 69 Y 2 9 W VIL input low level 003 W OPA VOH output high level 2015 W 255 W VOL output low level 0 0 V 0 45 V Operating Rang Interface levels 1 8V CMOS Parameter Min Max VIH input high level IREN Zo AW VIL input low level 0 0 3 D GZ VOH output high level 1 39W IO VOL
3. There are thr types of analog audio interface configurations e Handset low power typically a handset e Hands free low power typically an earphone e Car kit speakerphone high power typically a speaker MT and HF are legacy industry notations with the following meanings Term Definition HS MT Internal audio transducers Handset or Micro Telephone HF External audio transducers Hands Free Telit has retained the HS and HF acronyms keeping them both in the software and on any schematics However apart from any load driving constraint like a speaker with impedance lower than 16 Ohms this distinction is not relevant because the two sections both e Have fully equivalent electrical performance e g two microphone amplifiers e Activate the same functionalities e g echo canceller module e Offer slightly different performances e g two speaker buffering stages for example Reserved Page 44 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 As the performances of the two blocks are comparable the choice to use either could be made to overcome PCB design difficulties 3 9 1 Input lines microphone The two receive blocks are fully equivalent connected in Differential mode Mic MT 1st differential microphone path Line coupling AC Line type Balanced Coupling capacitor 2 100nF Differential input 20kOhm resistance
4. 1vv0300791 Rev 6 2012 02 13 Pin Signal I O Function pees Type 52 CHARGE AI Charger input Li Ion Power 53 ON OwE nput command for switching 47kQ BOLL me power ON or OFF toggle to command The pulse to be sent VBTT to the CC864 DUAL must be equal Ow greater tnan 1 eecome 5a EJES ESE I Reset input 55 WRC Power Telit GPIO 56 TGPIO 19 I O Telit GPIO19 Configurable GPIO CMOS 2 6 57 TEPIO 11 1 0 Telit GIOI Configurable GPIO CMOS 2 OW DIG TGPIO 20 1 0 Telit GPI020 Configurable GPIO CMOS 2 OW 59 TGPIO 04 CONVERS I O Telit GPIO4 Configurable GPIO CMOS ATION Conversation 2 gt OW 60 TGPIO_14 I O Telit GPIO14 Configurable GPIO CMOS 2 OV 61 TG TO 15 1 0 Telit GPI0O15 Configurable GPIO CMOS 2 6V 62 TGPIO_12 I O Telit GPIO12 Configurable GPIO CMOS 2 OW 64 TGPIO_22 I O Telit GPIO22 Configurable GPIO CMOS 1 EV 66 TEPLO_O3 I O Telit GPIO03 Configurable GPIO CMOS 2 OW 67 TGPIO_08 I O Telit GPIO08 Configurable GPIO CMOS DN 68 TGPIO 06 ALARM I O Telit GPIO06 Configurable GPIO CMOS Power wakeup PON 70 TEPTO 01 I O Telit GPIO01 Configurable GPIO CMOS 2 6 72 TGPIO_21 I O Telit GPIO21 Configurable GPIO CMOS ZION 13 TGPIO 07 BUZZER I O Telit GPIO07 Configurable GPIO CMOS Buzzer 2 ON PWM 74 gero 02 I O Telit GPIO02 Configurable GPIO CMOS
5. direct UART connection USB connection Handset Headset and Hands free car kit audio and antenna The EVK2 provides a fully functional reference solution for a data phone application The RS232 and USB interfaces provided allow the EVK2 to connect to a PC or other DTE An application utilizing the Telit CC864 DUAL must adhere to design guidelines for all interfaces to and from the module e g power supply audio paths level translators Otherwise degraded performance could b xperienced or in the worst case an operational failure of the module To assist with designs the EVK2 presents a series of different solutions which cover the most common design requirements on the market These can be easily integrated into the OEM design as building blocks or can be taken as starting points to develop a specific solution va SIN CARD d E A D e jm ESA Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 62 of 68 EL lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 B Acronyms and Abbreviations Term Definition ADC Analog to Digital Converter CDMA Code Division Multiple Access DAC Digital to Analog Converter EVRC Enhanced Variable Rate CODEC GPIO General Purpose Input Output GPS Global P
6. reversed with respect to the pin status LED status Device Status Peicmeiaeinc ly qii Device off Fast blinking Period 1s Net search Not registered Turning Tom 0 59 OE dE Slow blinking Period 3s Registered full service Tom 0 38 Permanently on A call is active VBATT R101 330 5 0603 DL101 KR LY M amp amp Q25 1 26 3 lt STAT LED 3 13 4 PWRMON The PWRMON pin is connected internally to a power source of the internal interface voltage corresponding to the 2 6V CMOS high level If the reset procedure and boot sequence is finished successfully PWRMON is changed to high state RH ps ERE tat fe K a Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 59 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 13 5 AXE The AXE pin can be used for audio path switching The handset path or hands free path can be selected with this signal State Audio Path Low Hands free mode Txs MIC lin EE EAR_HF High Handset mode Tg MIC th Rog JAR MUS If this pin is set to a low state the module uses the handset audio path If set to a high state the module changes the audio path to hands free mode from handset mode E K St meee LS Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page
7. with the logic levels of the module In this configuration the SP3282EB will adhere to EIA TIA 562 voltage levels instead of S232 3 Sai tH ye e eh AUT i LF d ZI E Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 39 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 NOTE The digital input lines working at 2 6V CMOS have an absolute maximum input voltage of 2 9V 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 6V preferably dedicated power supply If supplied from the main 3 8V the level translator IC outputs on the module side i e the CC864 DUAL inputs will work at 3 8V interface levels stressing the module inputs beyond their maximum input voltage range The RS232 serial port lines are usually connected to a DB9 connector with the layout shown in the following figure DCD_RS232 DSR_RS232 gt TX_RS232 lt RTS_RS232 lt x RX_RS232 CTS_RS232 gt e e o O 8 ee 0 0 DTR RS232 A RI RS232 Se a GND 3 8 1 2 5V UART Level Translation If the host application uses a microcontroller with a serial port UART that works at a voltage different from 2 6 2 9V circuitry must be provided to translate t
8. 0 or 4 5 commands module wakes up with an AT CFUN 5 j unsolicited code call or SMS or rising RTS line CFUN 5 full functionality with power Saving Module registered on the network can receive incoming call sand SMS CDMA TX and RX mode with GPS OFF Voice amp Data lt 700 Voice amp Data channel Max power Worst best case depends on network configuration and is not under module control Total supply current from the main battery with the device off and the 32 768 MHz crystal oscillator on This specification applies only for A JE K i Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 22 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Mode Average mA Mode Description IDLE mode with GPS ON full power Standby mode no call in progress GPS mode ON AT CFUN 1 135 iod meclep iui t meciona lies xs lie module AT CFUN 4 94 Disabled TX and RX modules 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 to send AT AT CFUN 0 or 9g commands module wakes up with an AT CFUN 5 uasolicilred code call or SMS Or Tisimej RTS line CFUN 5 full functionality with power saving Module registered on the network can receive incoming call sand SMS CDMA TX and RX mode with GPS ON GPS
9. 2 OW 75 TGPIO_16 I O Telit GPIO16 Configurable GPIO CMOS 2 6 76 ugeo 09 1 0 Telit GPI009 Configurable GPIO CMOS 2 OVI 77 Ge9xo 135 I O Telit GPIO13 Configurable GPIO CMOS DO 78 TGPIO 05 RFTXMON CMOS Config 7 i A Tm a ES e LU e b Communications S p A s written authorization All Rights Reproduction forbidden without Telit Reserved Page 66 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Internal T Pull up ype Transmitter ON monitor 2 OW Reserved Pin Signal I O Function 17 33 34 41 42 43 44 47 69 A Warning All reserved pins must be left open and unconnected they may not be used for any routing purposes on the application PCB NC NR pins They are reserved for internal Telit use or future expansion A NOTE RTS must be connected to the GND on the module side if hardware flow control is not used gia 3 i Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 67 of 68 A E lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 U S A U S FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFERENCE STATEMENT INFORMATION TO THE USER NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules These limits are design
10. GND ta OUTPUT C1 L 100nF C2 L 400nF C3 L 400nF OND GND GND GND SE b K 4 Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 54 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 12 General Purpose I O The general purpose I O Pins can be configured to act in three different ways Input Input pins can only be read They report the digital value high or low present on the pin at the read time Output Output pins can be written or queried Alternate function internally controlled An alternate function pin is internally controlled by the CC864 DUAL firmware and acts depending on the currently selected function PIO 0L 31 9 Coat ab ejns edel CM Input Low GPIO 2 6 74m TGPIO 02 1 0 Configurable CMOS Input Low GPIO IOVI 66m TGPIO 03 1 0 Configurable CMOS Input Low GPIO PIENO 59 TGPIO 04 I O Configurable CMOS Input Low RF GPIO 2 6V Transmission Consort Wem TGPIO 05 1 0 Configurable CMOS Input Low RE TXMON CHIO 2 OW 68 TGPIO_06 1 0 Configurable CMOS Input ALARM CHIO 2 OW 73 CETO 07 1 0 Configurable CMOS Input Low BUZZER Ge PRON 67 TGPIO_08 I O Configurable CMOS Input Low GPIO IOVI 76 TGPIO 09 I O Configurable CMOS Input Low GPIO 2 OW 63 TGPIO 10 I O Configurable CMOS Input Low PCM TX GPIO 2 5 QW 57 TGPIO 11 I O Configurable CMOS Inp
11. Kit EVK Chapter 5 Acronyms and Abbreviations provides definitions for all acronyms and abbreviations used in this guide Appendix Pin Allocation specifies the allocation of the pins on the module connector LT Text Conventions STOP Danger This information MUST be followed or catastrophic equipment failure or bodily injury may occur A 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 gt ECH IM AVI Leg iP Pe Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 10 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 1 8 Related Documents The following documents are related to this user guide e CC864 DUAL Product Description 80332ST10045A e CC864 DUAL AT Command Reference Guide 80332ST10044A e CC864 DUAL Software User Guide 1vv0300792 1 9 Document History Revision Date Changes RO 2008 12 03 First draft version for release R1 2009 07 16 Removed some unnecessary notes and removed Pin 80 rron Resezyeo R2 2010 04 19 Removed the channels listed from the sp
12. ON in Cellular Voice Data lt 800 Measurements channel Except external active GPS antenna Pn y E Ce v Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 23 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 3 1 15V Input Source Power Supply Design Guidelines The desired output for the power supply is 3 8V hence there s not a big difference between the input source and the desired output so a linear regulator can be used When using a linear regulator a proper heat sink may be required A bypass low ESR capacitor must be provided to cut the current absorption peaks close to the CC864 DUAL a 100pF tantalum or equivalent capacitor is suited for this purpose Verify that the low ESR capacitor on the power supply output usually a tantalum is rated to at least 10V A protection diode should be inserted close to the power input to protect the module from power polarity inversion A typical example of a linear regulator with 5V input is below 5V input linear regulator U201 LT152BCQ 5V DZ201 i 3 8V Out nr i das Y AAL d H Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 24 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 3 2 12V Input Source Power
13. Supply Design Guidelines The desired output for the power supply is 3 8V Due to the large difference between the input voltage and the desired output a linear regulator should not be used A switching power supply is preferred because of its better efficiency with the 1A peak current load drawn by the CC864 DUAL hen using a switching regulator a 500 KHz or more switching frequency regulator is preferable because of its smaller inductor size and faster transient response This allows the regulator to respond quickly to current peaks In any case the frequency and switching design selection is application specific because the switching frequency could also generate EMC interference which must be taken into account A bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks a 100uF tantalum or equivalent capacitor is suitable for this purpose The low ESR capacitor on the power supply output usually a tantalum must be rated to at least 10V A protection diode which can be the same diode as in spike protection below must be inserted close to the power input in order to save the CC864 DUAL from power polarity inversion Power supplies for automotive use are complicated so many factors must be considered such as over voltage reverse polarity cranking load dump booster batteries forced charging etc A spike protection diode must be
14. Transition time Rise time tR CL 50 to 600 plz 75 300 ns Fall time tF CL 50 to 600 pr 75 300 ns Rise fall time matching 80 125 ID detection ID pin pull w 108 140 182 kQ LESLSCAMCS A device detection tdelay lt 1 us Vhys a 0 15e H V threshold 50 mV VTRM B device detection tdelay lt 1 us Vhys 7 065 V threshold 50 mV VTRM 3 8 2 2 Diagnostic Monitor Port The CC864 DUAL has a diagnostic monitor port only on the USB s Diagnostic Interface TIP Make this port available on test pads or internal headers o in order to facilitate capturing test and debug data from the module Firmware updates can only be done on this Diagnostics Interface m a LES o E Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 43 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 9 Analog Audio Interface NOTE There are variants of the CC864 DUAL available including data only and voice support Please verify the module is voice enabled before attempting to use the Audio Functions The CC864 DUAL contains two distinct bi directional analog audio blocks e MT lines for handset function e HF lines for hands free function or earphone function Only one of the blocks can be active at a time as selected by the AXE input pin or by an AT command
15. a manner which avoids interference with other electronic devices Reusing the Telit FCC ID for the end product may be possible if the antenna is greater than 20cm from the human body when in use and there are no co located transmitters Otherwise additional FCC testing such as SAR is required The system integrator must assess the final product against the applicable FCC regulations j Ja E lt lup e Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 9 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 1 5 5 Disassembly Do not disassemble the product Any evidence of tampering will void the warranty 1 6 Document Organization This manual contains the following chapters Chapter 1 Introduction provides the scope for this manual target audience contact and support information and text conventions Chapter 2 Mechanical Specifications contains information on the dimensions of the module the interface connector and the RF connector and instructions for designing the module into external applications Chapter 3 Hardware Interface Description describes the hardware interfaces of the product and provides guidelines for using the module in various applications Chapter 4 Development and Testing provides information on operating the module with the Telit Evaluation
16. inserted close to the power input to clean the supply from spikes A Specific automotive grade regulator is recommended as well For a car PB battery the input voltage can rise up to 16V therefore all components in the power supply must withstand this voltage An example of switching regulator with 12V input is in the below schematic it is split in 2 parts 1 H e S i E ZN E PM 4 a eee y AN ea P i h d 74 e F E 4 m Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 25 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 9W Ka o TP201 TP212 TP210 C TP211 L5973D 10uF g ges Mi u BUE CONTE m STPS2L40U X7R 50V sov 1210 0805 o ZER lel SMB 0603 0805 TO SWITCHING 12V INPUT VIN RT201 2A MF R110 30A DO 214AA 3 3 3 Battery Source Power Supply Design Guidelines The desired nominal output for the power supply is 3 8V with a maximum allowed voltage of 4 2V Therefore a single 3 7V lithium ion cell battery is ideal to supply the power to the module The suggested battery capacity is from 500mAh to 1000mAh STOP Warning DO NOT USE any Ni Cd Ni MH or Pb battery types directly connected to the modem Their use can lead to overvoltage and damage to the module USE ONLY Li Ion battery SSA A bypass low usually 100uF tanta
17. output low level 0 0V 0 45V E Pig E Reproduction forbidden without Telit Reserved Page 36 of 68 Communications S p A s written authorization All Rights I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 8 Serial Interfaces Serial ports on the CC864 DUAL function as the interface between the module and User Application There are two main types of serial ports on the module UART and USB The CC864 DUAL has one main UART that can be used for control and data transfer In addition the module has a USB port that can function as the main control interface for the host application NOTE To access the module and to allow in circuit A reprogramming of the module s firmware the USB port must be made available This is generally a requirement for wireless carrier approval testing as well The application controlling the device may be placed into tri state disconnected or act as a gateway for the serial data when reprogramming occurs All application designs should include a means to reprogram the module 3 8 1 UART Serial Interface The CC864 DUAL UART functions as the controlling interface between the module and the host hardware Depending on the host hardware serial port implementation a level translator circuit may be required The only configuration that does not require level translation is interfacing to a 2 8V UART There is one
18. s used for this module must not exceed 5 12dBi 800MHz and 6 12dBi 1900MHz 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 3 4 2 Antenna Installation Guideline To avoid subjecting the application to FCC SAR requirements if possible the antenna should be at least 20 cm from all persons during operation In general the antenna should not be co located or operating in conjunction with any other antenna or transmitter The antenna must be installed according to the antenna manufacturer instructions Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 33 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 5 GPS path Architecture and antenna The CC864 DUAL has two different GPS paths Path 1 External Active GPS Antenna GPS itch Path 2 Ge Combined Antenna E GPS A GPS GPS Gellular o filter Processor Triplexer Path 1 is the dedicated GPS path this path can support an external active GPS antenna and external GPS antenna monitorin
19. the CC864 DUAL has powered on the hardware line PWRMON must be monitored When PWRMON goes high the module has powered on NOTE Do not use any pull up resistor on the ON line it is internally pulled up Using a pull up resistor may cause latch up problems on the CC864 DUAL 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 are inverted Active low signals are labeled with a name ending with 4 or with a bar over the name NOTE CC864 DUAL may be turnedon also by supplying power to the Charge pad provided there is a battery on the VBATT pads An example 1 Assume the ON pad needs to be driven with a totem pole output of a 1 8 5 V microcontroller uP_OUT1 uP OUT1 gt Qe BC847BW SOT 123 DE y TEE 47K Power ON OFF impulse JB SL Sue ki 3 ei ME ys KE Leg i Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 18 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 243 Turning Off the CC864 DUAL The module may be turned off with either a software command or a hardware shutdown circuit When the device is shut down it notifies the network that it is powering down and is therefore no longer reachable Warning Never discon
20. transistor to deliver current pulses to the battery One purpose of pulsed operation is to check and recheck the battery s open circuit voltage confirming a full charge before terminating the process 3 3453 Thermal Design Guidelines The thermal design for the application and its power supply should take the following parameters into account Average current consumption during lt 700mA transmission at Max level lt 25dBm T NOTE The average current consumption during transmissions depends on the power level at which the device is requested to transmit by the network Hence the average current consumption varies significantly Considering the very low current during idle and sleep time especially when the power saving function is enabled from a thermal point of view it is accurate for estimation purposes to consider that the device only draws significant current during calls An Example If the device transmits for a few minutes and then remains idle for an hour the power supply always has time to cool down between the calls The heat sink can therefore be smaller than the calculated 700mA maximum RMS current or there can be no heat sink simple chip package In average network conditions the device transmit power is lower than the maximum and thus the current consumption is less than 500mA For these reasons the thermal design is rarely a concern and using the ground plane where the pow
21. 1 Ge Bam 11 812015 33 11015 1651005 y E 2 i e Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 12 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 2 2 Interface Connector The CC864 DUAL is equipped with a Molex 80 pin board to board connector P N 0539490878 male The mating part is Molex P N 0541500878 female 2 92 0 64 The CC864 DUAL is equipped with a Murata GSC type 50 Ohm RF connector P N MM9329 2700 The suitable counterpart is Murata MXTK92 type or MXTK88 type connector Ei fe kt A Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 13 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 0 15 4 0 03 0 5 0 1 KK KKK SODIO NSSSSSNSSNNNSNNY OCC A SSSSSSSSNSSSSSNS 2 1dia LLLA y SE KC VA INN EM HOT TERMINAL GROUND TERMINAL SCALE FREE TOLERANCES UNLESS OTHERWISE SPECIFIED 0 2 UNIT mm 0 15 0 03 The same connector type and part number is used for both the CDMA RF port and the GPS RF port NOTE The CDMA RF antenna connector is located on the same Side as the MOLEX 80 pin connector The GPS RF antenna connector is located on the side with no system connector Reproduction forbidden without
22. 100pF capacitor is connected across the two AC coupling capacitors on the microphone side A 27pF capacitor bypasses the microphone output The positive microphone terminal is connected to the bias voltage 1 8V through a 2 2 Ohm bias resistor The 1 8V output provides up to 1 mA bias current for the microphone The bias power is bypassed by a 0 luF capacitor The figure below shows the basic headset configuration 1 8V CC864 Dual Module MIC HEI HS earpiece e Pin 10 The module also supports a differential headset interface as shown in the figure below SE Reserved Page 49 of 68 Reserved lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 CC864 Dual Module MIC_HF HS earpiece 320 Car Kit Speakerphone Interface For the car kit speaker phone configuration the power output requirement is usually at least 4W therefore an amplifier is required to boost the CC864 DUAL audio output The design of the amplifier should comply with the following guidelines The input to the amplifier must be taken from the EAR HF audio path of the module The amplifier must have a mute control to be used while not in conversation to eliminate background noise and to save power The power to the amplifier must be decoupled as much as possible from the CC864 DUAL power supply by either keeping separate wires or by placing bypass capacitors of adequate va
23. 5 RIN 30 Ring Indicator Output from the CC864 G DUAL indicating the incoming call condition NOTE According to V 24 to from the perspectiv the RXD and TXD signals are referred of the application Therefore thes Signals are referred to in the opposite direction for the module TXD on the application side will be connected to the receive line here named TXD Receive line of the module s Serial port and vice versa for RXD TIP For a minimum implementation only the TXD and RXD lines need to be connected leaving the other lines open provided software flow control is implemented 3 8 1 1 RS232C Interface and Level Translation In order for the module to interface 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 e Translate the level from 0 2 8V to 15 15V The RS232 UART 16450 16550 signals with lower levels on the RS232 side E 16650 and 16750 chipsets accept A 562 A T gs ee mE D a Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 38 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 allowing for a lower voltage multiplying ratio on the level translator Note that the negative sig
24. 60 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 4 Development and Testing 4 1 Debug of the Module in the Final Application To test debug and reprogram a module in the final application Telit strongly recommends having the interfaces listed below externally accessible or available via test pads on the host PCB This allows testing of the connection between the module and the application and to test the performance of the module using an external computer or test set Depending on the customer application these pads include but are not limited to the following signals e TXD e RXD e ON OFF e RESET e GND e VBATT e PWRMON e USB D e USB D e USB V_BUS e USB ID TIP If the application uses USB as the main interface to the o module Chis ise sufficient ito capture amy debug and trace data no other UARTS needed provided the application can export the data stream from the USB Diagnostic Interface port 4 2 Development Kit To assist with the development of Telit CC864 DUAL based applications the EVK2 Evaluation Kit is available which i is us 2 fun s K 4 Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 61 of 68 Telit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 provides the following RS232 serial port level translator
25. 864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Handset Interface The earpiece output pins are connected directly to the handset earpiece each with its own bypass capacitor The capacitor value is selected to optimize performance in each design but a value of 100pF or less is suggested The output power for the differential EAR1 output is typically 50mW for a full scale 3dBm sine wave into a 32 Ohm speaker Each microphone pin requires a 2 2K bias resistor The positive microphone terminal is connected to the bias power 1 8V through one of the 2 2K resistors The 1 8V output provides up to 1mA bias current for the microphone In addition each connection includes a bypass capacitor 27pF is used in th xample below and a 100pF capacitor is connected across the differential pair near th arpiec The following figure shows a typical handset interfac 1 8V CC864 Dual Module MIC MT Earpiece 320 2 Y d M NE A cb Pd U Y a PLE H E Kee Reproduction forbidden without Telit Communications S p A s written authorization All Rights Page 48 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 9 5 Headset Interface This configuration uses a standard mono single ended microphone interface The positive input contains the signal and is AC coupled directly to the microphone while the negative input is AC coupled to ground A
26. Communications S p A s written authorization All Rights Reserved Page 16 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 2 Turning On and Off the Module Seeds Turning On the CC864 DUAL To turn on CC864 DUAL the pad ON must be tied low for at least 1 second and then released The maximum current that can be drained from the ON pad is 0 1mA The following figure shows a sample circuit to accomplish this operation ON Q1 gt TILA UI Power On Impulse FO GND 3 2 2 Initialization and Activation state The CC864 DUAL is not activated immediately after power up because the boot sequence of CC864 DUAL needs to complete It takes about 10 seconds to initialize the module internally For this reason the CC864 DUAL should not be accessed during the initialization state as below To get the desirable stability CC864 DUAL needs at least 10 seconds after the PWRMON goes HIGH VBATTERY 1 sec lt HOLD TIME lt 2 sec ON OFF PWRMON monitoring PWRMON status Internal state fem 4 wee ques Reproduction forbidden without Telit Communications S p A s written Zem All Rights Reserved Page 17 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 During the Initialization state no AT commands are available DTE must wait for the Activation state to communicate with CC864 DUAL To check if
27. Design Guidelines 25 3 3 3 Battery Source Power Supply Design Guidelines 26 3 3 4 Battery Charge Control Circuitry Design Guideline 27 3Soged l Trickle Charging tice tee ao doe el de ee eee NN ele We x E ee RE d 28 3 3944 2 Constant Current Charging e fede e ween EE S 29 3 3 4 3 Constant Voltage Charging As sweden v Rr ry RE 29 S344 Pulse Charging iia ds a da 29 3 3 5 Thermal Design Guidelines i943 c e UR aa 30 3 3 6 Power Supply PCB Layout Guidelines rpi daa sas 31 3 4 Antenna Requirements see debe eked eee Gees de ee dee ede tad RS 32 3 4 1 FCC s RF Exposure Rules and Regulations 33 3 4 2 Antenna Installation Guideline eee eee 33 3 5 GPS path Architecture and antenna ee eee 34 3 5 1 GPS Antenna Requirements Path 1 ee ee ee eee 34 Qui A Combined Cellular GPS Antenna Requirements Path 2 35 SE Linear and Patch GPS Antennas Path Ji cens 555 3 5 4 Active GPS Antenna LNA and Front End Design Considerations Path 1 35 Is GES Antenna Installati n Culcelines esckeee se ce Rx sa a 36 Sue d Logic Level Spectator AA SUA RES 36 3 8 Serial IMtertaces desmoldar as 3 3484 1 UART Serial Interface 24 4 k08s2 60 da a 37 3 8 1 1 RS232C Interface and Level Translation 38 Se8 1 2 OV UART Level Trans lat lidiar a 40 Ina USB Intertoto o Ea EE Stan eda pu 42 3 285241 U
28. Differential input lt 1 5 03 sc a HSMic voltage G 0dB Gain steps 7 Gain increment 6dB per step Mic_HF 2nd differential microphone path Line coupling RC 7 Line type Balanced Coupling capacitor 2 100nF Differential input 20kOhm resistance Differential input S 1 03 H EWL voltage G 0dB Gain steps 7 Gain increment 6dB per step Because particular applications may need a single line connection a Single Ended configuration could be implemented but halving the useful microphone signal In both cases the application circuitry must be carefully designed to reduce the common mode noise typically generated on the ground plane Warning The line coupling definition AC means that the A signals from the microphone must be connected to the input lines of the module through CAPACITORS not less than 100nF By not respecting this constraint the input stage may be damaged 4 E is eu Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 45 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 9 2 Output lines Speaker The load should be driven differentially from both output drivers thus the output swing will double and the need for the output coupling capacitor avoided If a particular OEM application needs a Single Ended Output configuration the output power will be redu
29. G EEN EEN yag m UR EE EEN e Ww E iat E s 55 3x12 1 Using a GPIO prin as Inp t sg Rh WAN NEEN RU RETE ed SEENEN A 56 Bin LA a2 Using a GPIO prin aS QUEPUL sra RN NEE ENEE AUN ad 56 Fo LATE Using the RF Transmission Control GPIO4 56 Sub Using the RETXMON Output GPIO5 was ed 299 29 9e yx G3 aa 56 Sl 2 6B Using the Alarm Output GEFEELT que Boe enr eru 57 3412 6 Using the Buzzer Output GPIOY esascs ew reos uod 3 3 512 T7 TOPTO DO MD DC 58 EE Miscellaneous Interface Signals 58 3313415 VAUXL pbs tb Fugees CE PERRO AAA 58 3 1362 VRIG a TT 58 3 51343 STAT CED Network Status LED 2d Ges 59 3 13 4 PWRMON 4 6a ec E EEN NEEN NEEN EEN NEEN E US AA E A E 59 3 13 5 PORES rrr 60 4 Development and Testing eee 61 4 1 Debug of the Module in the Final Application 61 4 2 Development Kit ied ee e di a 61 5 Acronyms and Abbreviations oooooooo eee ens 63 6 Appendix Pin Allocation eee 64 i E S Ke e K a Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 5 of 68 1 3 Introduction Scope lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 This document describes hardware solutions for developing a product containing the Telit CC864 DUAL module by e Describing the basic functions of the module e Suggesting a prope
30. MA and PCS VSWR recommended S 221 Radiation pattern Omni directional Polarization Vertical Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 32 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Note If the application is developed for the US and or Canadian market it must comply with 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 CC864 DUAL module Antennas used for this OEM module must not exceed 5 12dBi gain in CDMA and 6 12dBi gain in PCS for mobile and fixed operating configurations 3 4 1 FCC s RF Exposure Rules and Regulations To meet the FCC s RF exposure rules and regulations o 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 o The system antenna
31. OTE The balanced circuitry is preferred because of its good common mode noise rejection TIP Keep the analog microphone traces on the PCB and any wires as short as possible The microphone traces on the PCB should not cross or run parallel to noisy traces especially OWS tiaces TIP If your application requires an unbalanced microphone keep the traces on the PCB balanced as close as possible to the microphone or wire connector TIP Put a ground trace connected to the ground plane by several vias all around the microphone lines in order to simulate a shielded trace on the PCB The module provides two audio paths in the receive section Only one of the paths can be active at a time selectable by the AXE input signal or with an AT command The table below lists the audio connections that can be used for the CC864 DUAL module Pin b er Pin name Pin type Functional description 16 MIC MT AI Microphone 1 input 15 MIC_MT AI Microphone 1 input 14 MIC HF AI Microphone 2 input 13 MIC_HF AI Microphone 2 input 10 EAR HF AO Headphone output 41 right side 9 EAR Di AO Headphone output 2 left side 12 EAR MT AO Earphone amplifier output 11 EAR_MT AO Earphone amplifier output Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 47 of 68 Reserved lit CC
32. Pulse Density Modulated DAC JU Ser St LE y NA Sec z i 1 el e Ed o LT Lu 5 gt d i a d Ly od Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 53 of 68 3 11 2 2 3 11 2 3 Parameter Output Voltage Range Resolution PDM Clock rate lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Min Max DV 26 V 9 loui 4 8Mhz The resolution is 8 bits so as an example if the maximum voltage is 2 6V the integrated voltage could be calculated with the following formula Enabling the DAC An AT command is avail AT DAC lt enable gt lt val value 8 bit precision Integrated output voltage 2 6 x value 255 able to control the DAC function ue gt scale factor of the integrated output voltage 0 255 and must be present if lt enable gt 1 Refer to the SW User Guide or AT Commands Reference Guide for the full description of this function Low Pass Filter Example The DAC pin drives the PDM It is a square wave output Pulse Density Modulation signal The application needs an additional RC filter to convert the PDM output to an analog signal The figure below shows an example of a Low Pass filter Final tuning is needed to find the exact values of resistors and capacitors for the target application P1 E 12k INPUT dac out P2
33. S e leli wireless solutions CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 EN S M Wow LU 6 4 AA e LA el Ty zi Making machines talk lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 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 wit
34. SB Transceiver SpecifriCatlOnS es 22999 ela eee bee es 42 29490 2 2 DBDragnostric Montbor POPE dedos ee E ea e gU wae eae oe 43 S49 Analog Audio Interrace 225260 orc ees aaa 44 3 9 1 Input lines microphone sr de dons a rh RR ERROR E eee AN e 45 3 9 25 Output Lines Speaker seen dk 9 aa ur oko ex elem ON EEN RU EC a 46 8 9 3 General Design R le eS carisimo idas 5 uou a ed RS aa Y 47 3 0 2 Handset Interface uate deb ete e See eee eu uere eer 48 3 9 5 Headset Inbterfdce6 44 2 2x04 A ES ee 49 3 9 6 Car Kit Speakerphone Interface eee eere 50 3 10 PCM Digital Audio Interface 292 99 9 939 ER ees 52 Soll ADE DAC Interface et i we equ wage uer s e er E a qe uS que 1 DOC CONVSEESE ii dies educi ciu dr EE eie re K y Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 4 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Swill ls Description uua s Sha 9 ec A wd i Re eCard B he ea a 53 3 lll 2 Using ADC Converter lw Re Ue a Pr ea ede Ra RE NNN 53 3 11 2 DAS EE a eg o Deh bere beste dE e ELS 53 3 11 2 1 DESCETPELON e 99239 s a E Y 53 3 11 2 2 Enabling the DAG ss dacs kaw Serle a Ge nas E Seren Y 54 3 1192 3 low Pass Falter Example oro dein ds a UE RI de ad 54 3412 General P rpose I O wy sd i
35. Telit Communications S p A s written authorization All Rights Reserved Page 14 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 2 3 Mounting The figure below shows the position of the Molex board to board connector and pin 1 26 5 0 15 MOVABLE RF CABLE 1 i eo 2 zb m sl 3 E 4 1 1 Tip It is highly recommended to maintain a 1 5mm clearance between all wireless modems and any components including solder tabs d ey Kai Fe KS D f Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 15 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 33 Hardware Interface Description 3 1 Overview The CC864 DUAL has the following main interface functional blocks e UART1 used for AT commands e USB can be used for AT commands Data sessions GPS NMEA Data Diagnostics and updating firmware e GPIOS e Audio includes Analog 1 0 audio codecs and PCM interface e Miscellaneous pins GPS To GPS Switch Dedicated d E Antenna E QSC 6055 RX g Filter U 5 Uc so S oU o 26 3 23 T S TX gt E E Filter d 9 8 To S S D 5 Antenna ES 5 9 D 2 9 el 52 oc 3 9 TX Filter CDMA Rx GPS wee Reproduction forbidden without Telit
36. UART port on the CC864 DUAL It differs from the standard PC RS232C in signal polarity where RS232 is reversed and levels The UART can be used as the module s serial data port for test and debug using AT commands and can support additional interface functions such as an external keypad or ringer The following table lists the signals of the CC864 DUAL UART and the corresponding RS 232 signals RS232 Signal Pin No Name Usage Pin No 1 C109 DOD 32 Data Carrier Output from the CC864 Detect DUAL that indicates the carrier presence Nc We Ge ED PE APTE d gf mE TI Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 37 of 68 CC864 Le o Telit DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 RS232 Signal Pin No Name Usage Pin No 2 C104 RXD 26 Transmit line Output transmit line of CC864 DUAL UART E CLOS DAD 25 Receive line Input receive of the CC864 DUAL UART 4 C108 DTR 29 Data Terminal Je o tas COS64 Ready DUAL controlling the DTE READY condition 5 GND BAO 1 Ground Ground 6 CLOT DER 27 Data Set Ready Output from the CC864 DUAL indicating the module is ready 7 eX OV ASI 31 Request to Input to tme CCO64 Send DUAL controlling the hardware flow 8 CAO ies 28 Clear to Send Output from the CC864 DUAL controlling the hardware flow 9 C12
37. can be omitted 3 12 3 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 it is necessary to add a pull up resistor 4 7K to VAUX1 3 12 4 Using the RFTXMON Output GPIO5 The GPIO5 pin when configured as RFTXMON Output is controlled by the CC864 Family 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 conversations and it will be again LOW after hanged Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 56 of 68 312 5 3 12 6 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 The line rises up 300ms before first TX burst and will become again LOW from 500ms to 1sec after last TX burst Using the Alarm Output GPIO6 The GPIO6 pin when configured as Alarm Output is controlled by the CC864 DUAL It goes high when the alarm starts and low again after receiving an alarm control AT command This output may be used to power up the module itself or the external application at the alarm time providing the option to program a timely system wake up to perform periodic actions while completely turning off either the appli
38. cation or the module during sleep periods considerably reducing power consumption Refer to SW User Guide or AT Commands Reference Guide for the full description of this function NOTE During RESET this pin is at a HIGH logic level Using the Buzzer Output GPIO7 The GPIO7 pin when configured as Buzzer Output is controlled by the module It drives a buzzer with square waves and permits the application to easily implement the buzzer feature with tones incoming call SMS etc or simply playing a tone or melody when required by the application The following figure shows an example of the TGPIO 07 BUZZER configuration TR2 SMBT2907A V buzzer GPIO7 TR1 BCR141W Example of Buzzer s driving circuit gt s Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 57 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Note The driver configuration depends on the characteristics of the buzzer Please consult the buzzer documentation for a COSC Oui muse gi c 3 12 7 TGPIO 08 The GPIO9 pin when configured for power saving the host provides this signal to the module thereby setting the module into power saving mode This signal is active low When the module enters power saving mode every active item including the UART is turned off so that current consump
39. ced 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 STOP WARNING Using single ended configuration the unused output line must e Jeng pem Not respecting this constraint will damage the output stage Ear MT Differential Line out Drivers Line coupling DC Line type Differential Output load resistance 32 Q Signal bandwidth 150 4000 Iz 3 ela Differential output voltage 734 mV MAX Gain steps 7 Gain increment 3dB per step Ear HF Fully Differential Power Buffers line coupling DC line type Differential output load resistance 32 Q signal bandwidth 150 4000 Iz E 3 em Differential output 640 mV voltage MAX Gain steps 7 Gain increment 3dB per step 4l 2 FC Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 46 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 9 3 General Design Rules There are several possible configurations for the audio paths but the two main types are balanced and unbalanced microphone configurations The entire microphone path should be balanced even if this requires having two wires connecting the microphone instead of the required one in the unbalanced case N
40. d micro controllers TT Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 41 of 68 3 8 2 USB Interface lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 The CC864 DUAL includes a Universal Serial Bus USB transceiver which operates at USB low speed 1 5Mbits sec and USB full speed 12Mbits sec The transceiver is compliant with the USB 2 0 specification and can be used for diagnostics control and data transfers The table below describes the USB interface signals Note USB connection points are required for software upgrades and other services USB Signal Pin Usage Pin No Name No 1 USB VBUS 48 Power supply for the internal USB transceiver This pin is configured as an analog input or an analog output depending upon the type of peripheral device connected 2 US BEDS 80 Minus line DE the differential D directional USB signal to from the peripheral device 3 U SIB IDHF 19 Plus line Of the differential l directional USB signal to from the peripheral device 4 USB_ID 35 Analog input to sense whether a peripheral device is connected as well as detects the USB peripheral type Host or Slave Left floating grounded or resistor to ground by the peripheral 3 8 2 1 USB Transceiver Specifications The USB transceiver specifications are in th
41. d threshold which is usually about 3 0V for Li ion batteries The threshold varies with battery type and application so there is no predefined value implemented in the detection circuits The firmware stops the trickle charging based on battery voltage measurements and battery type Ka f b A LA AL RH ps 8 ei Ke e K 5 Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 28 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 3 4 2 Constant Current Charging The module firmware supports constant current charging of the main battery During constant current charging the battery is charged with a constant current of 600mA As the battery voltage rises and approaches its desired value of 4 2V the charging current begins to decrease indicating the end of constant current charging and the beginning of residual charging The firmware monitors the voltage and takes the appropriate action to terminate constant current charging mode Charging continues with residual charging either constant voltage or pulsed Note In this application the charging firmware limits the charging current to 600mA 3 3 4 3 Constant Voltage Charging Once constant current charging of the lithium ion battery is finished the charging continues using either constant voltage or pulsed techniques Constant voltage charging is similar to th
42. e charging Note This process is completely transparent to the application and is controlled by the module firmware The description below is for completeness and battery selection purposes only Further description of all charging modes is provided in the sections below The following figure illustrates the main battery charging sequence e s Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 27 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Sat X N Charging Trickle Charging Constant Current Charging Constant Voltage Select residual Charging method Y Constant Voltage Charging Pulse Charging V Done Done 3 3 4 1 Trickle Charging The module firmware and power management circuitry provides trickle charging of the main battery when powered from VDD This mode is used by the module to raise a severely depleted battery s voltage to a level sufficient to begin fast charging Attempting fast charging with a high current supply on a deeply discharged battery would cause the battery to draw xcessive current pull the VDD voltage down and possibly cause a module malfunction or shutdown due to an under voltage lockout condition Trickle charging is used by the module firmware until the main battery reaches a predefine
43. e Software User Guide contains procedures for shutting down the module using AT commands 3 2 4 Hardware Reset To perform a hardware reset and to reboot the module the RESET pin must be tied low for at least 200 milliseconds and then released The following figure shows a sample circuit to accomplish this operation RESET AL Inconditional Restart Impulse ND TIP A hardware reset circuit should always be implemented on the host board and used as an emergency reset procedure only Otherwise it must always be connected to an open collector transistor to permit the internal circuitry to control the signal during the power on reset and under voltage lockout Dn LOMS s i NOTE If unused the RESET pin may be left unconnected Reset Signal Operating Levels Signal MIN MAX RESET Input High 2 0V 2 6V RESET Input Low OV o AW This signal is internally pulled up so the pin can be left floating if not used Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 20 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 An Example Assume the RESET pad needs to be driven with a totem pole output of a 1 8 5 V microcontroller uP_OUT2 RESET Epp up OUT2 P qe BC847BW SOT 125 S 2 5 Summary of Turning ON and OFF the CC864 DUAL The chart below describes the overall seq
44. e constant current mode The battery voltage is constant while the charging current decreases exponentially for the remaining charging process The end of the constant voltage charging is typically detected by allowing voltage operation for a pre determined duration beyond crossing the VBATDET threshold in the internal charger IC lasting for one and a half to two hours The firmware limits the predetermined duration to 120 minutes because charging for too long can damage the battery 3 3 4 4 Pulse Charging The CC864 DUAL uses pulse charging for final charging Pulse charging is implemented by switching the pass transistor on the internal charger IC on and off The module and external electronics must draw minimal current so the battery s open circuit voltage can be measured accurately during the off interval Compared to constant voltage charging pulse charging Provides better voltage accuracy Reaches full charge more quickly DEM LJ Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 29 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 e Dissipates less transistor power when switching from constant current charging Pulse charging is enabled through firmware control and uses the same hardware as constant current or constant voltage charging but repeatedly opens and closes the pass
45. e table below Parameter Comments Min Typ Max Units VBUS Supply Voltage 4 4 5 s 5 6 V SUPE CU rent 25 mA Input Levels for Low Full speed Input sensitivity D D Vin 0 8 0 2 E V differential to 2545 W i EE ors Includes VDI 0 8 2 5 Receiver threshold Single ended 0 8 2 0 Receiver hysteresis Single ended 200 mV Output Levels for Low speed and Full speed Logic low St 1 5 k to 3 6 Y 0 3 V B i Rib 1S kk wee GND 6 Ieren ere Ee WEE 2 4 Jal Output s dt Reserved Page 42 of 68 Reproduction forbidden without Telit Communications S p A s written authorization All Rights e d lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Parameter Comment s Min Typ Max Units voltage Terminations 0 Y lt VDD lt 3 6 We EE SE measured at D and 300 KQ H D pins to GND Transceiver output Active high or 6 18 Q impedance active low o De Do 28 33 44 Q Ee Interna ml lte VIRM CORDI WIIM tO 1 42 1 500 1 575 kQ resistor D 5 EE D to GND D to GND 14 3 15 0 24 8 kQ POS LSCOIe Transceiver input Der and D pins Ce 8 E 20 F capacitance GND H Driver characteristics full speed Transition time Rise time tR Qi 50 to 125 jor 4 20 ns Fall time tF CL 50 to 125 pi 4 20 ns Rise fall time matching 90 111 SE D 28 33 44 Q resistance Driver characteristics low speed
46. ecifications because the module was on channels not listed Add a power supply table in section 3 3 Corrected information regarding flow control on pages 33 amp 61 MR DANG loe accuzacy correcres elote mor DIEE R UIM information removed not supported on CC864 DUAL Formatting updates R3 2010 09 13 Additions in the UART AXE and RESET sections RA 2010 09 20 Additions to USB section and mechanical Specifications R5 2011 01 31 Updated Power Consumption Table Updated Antenna Requirements Table Updated Chapter 3 2 Turning On and Off the Module Updated Thermal Design Guidelines Updated External Active Antenna Spec Table Updated Input Lines Microphone Added Output Lines Speaker R6 2012 02 13 Updated 3 3 2 Switching regulator schematic Updated 3 4 Antenna Requirements Update 3 9 1 3 Sw UWNRW Wramslacicim Removed I2C Bus Interface Updated 3 12 General Purpose I O Updated 6 Pin Allocation Added FCC IC compliance Information TOA FY LM Y y Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 11 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 2 Mechanical Specifications 2 1 Module Dimensions The table below outlines the overall dimensions of the CC864 DUAL Length 2602 20 8 mm widen 30 0 0 2 mm Thickness Ae col an Weight 9g Excluding solder pads 4 810
47. ed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular Installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet of a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for assistance Changes or modification not expressly approved by the party responsible for Compliance could void the user s authority to operate the equipment Connecting of peripherals requires the use of grounded shielded signal cables FCC Compliance Information This device complies with Part 15 of FCC Rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received Including interference that may cause undesired operation Industry Canada Comp
48. eeia Sete ve tees dees tae Ye da ee doe Se ET 1 L9 Document AUSTOrY 3 2 ux X TES x a a aaa 1 2 Mechanical SGpeciticGations cee eee ee ee ooo 12 Zale Module DIMENSIONS ze 94x 9 ee ee as 12 PA Interface Connectol v wn Niege Ne E eR we NN o x Ne EN eee 13 Zeca o ge de See eae te ee EE e A 15 3 Hardware Interface Description ooo 16 Sl OVS VOW Biv cid Ica E SE e EE EU HUNE EE IDE E EE 16 32 Turning On and Off the Module o o oooooooooooooooooooo 17 SA Turning On the CC864 DUAT rroa eenaa Ea pd eg Ue Rr Y Fa Eus Ive 17 3 2 2 Initialization and Activation State 2 24 92 E ES T 3 24 3 Turning Off the CC864 DUA Ly tec ccs ot eee uem E tum A e EUR 19 J uA 2 1 Hardware AS Er ELE eea as e EE SEET ORE e a aes er 19 3 24 9 24 Sottware SHhutdOWI ice erm a Pee e Uy Ce ed ee Wo US Yo eR cy aa 20 3 2 4 Hardware RESET areire cene EEN E a ge EEN A Eye Wee E 20 34245 Summary of Turning ON and OFF the CC864 DUAL 21 s D S Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 3 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 3 Power Supply ue ee mem o oec Rome mde NNN que moe doe cse mue me Roe ee ee 21 3 3 1 5V Input Source Power Supply Design Guidelines 24 3 3 2 12V Input Source Power Supply
49. er supply chip is placed as the heat sink can be enough to ensure good thermal conditions and avoid overheating The generated heat is primarily conducted to the ground plane under the module and the ambient air by convection so ensure that the application E dissi ate the ES V RUD pi is cm Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 30 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 3 8 Power Supply PCB Layout Guidelines Telit recommends that the power supply for the CC864 DUAL be designed to meet the higher demands of GSM UMTS modules The power supply will be slightly over dimensioned for a CDMA modem but will allow for an easy transition to another technology if need be GSM UMTS 2A vs CDMA 1A peak current consumption The power supply implementation must have a low ESR capacitor on the output to smooth the current peaks and should include a protection diode on the power supply input to protect from Spikes and polarity inversion The placement of these components is crucial for the correct operation of the circuitry and application A misplaced component can be ineffective or even decrease th power supply performance Therefore the following guidelines are offered The Bypass low ESR capacitor must be placed close to the module power input pads If the power supply is of the swi
50. et earphone signal output Audio phase 13 IHE AI Hands free microphone Bine f Audio phase nominal level 3mVrms 14 MICHHES AI Hands free microphone aime p Audio phase nominal level 3mVrms L MIG MIH AI Handset microphone signal Audio input phase nominal level 50mVrms 16 MIC MI AI Handset microphone signal Audio mole p phase momimal level 50mVrms R UIM Card Interface Future 18 VREG RUIM Power supply for the UIM PIN 19 ULM RST O Reset SN 20 UIM_DATA 1 0 Data O ZN ZA UIM_IN T Presence active low 47K 2D OW 22 UIM CLK O Clees 2o GY Diagnostic Monitor 2 5 RO TRACE I RX Data for debug monitor CMOS ZONI 24 TX TRACE O TX Data for debug monitor CMOS PON Program Data Hw Flow Control 25 C103 TXD T Serial data input TXD from Reprod ction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 64 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Pin Signal I O Function priis Type 26 C104 RXD O Serial data output to DTE CMOS 2 OW 27 ClO07 DSR O Output for Data set ready CMOS signal DSR to DTE 2 OW 28 C106 CTS O Output for Clear to send signal CMOS CLS co Dum 2 OV 29 C106 0UR
51. g functions Path 2 is a combined path In this configuration the triplexer is furnished by the module so no external triplexer is necessary A combined CDMA GPS antenna is sufficient Please note that this configuration cannot support an active GPS antenna or any antenna monitoring functions The desired GPS RF path is chosen by an AT command Please refer to the AT command manual for information on this command Note An AT command is used to switch GPS ports ATSGPSPATH Deu obs GPS Antenna Requirements Path 1 The CC864 DUAL includes an internal LNA The internal LNA provides 13dB and ensures sufficient performance in most cases If the application calls for additional gain an external active antenna may be utilized The module provides an active GPS antenna supply circuit with the following characteristics e A total gain of 12 16dB from the GPS antenna plus any external LNA is recommended e Supply voltage is derived from VBATT can vary from 3 4 to 4 2V DC e Supply enable is controlled internally by the module Reserved Page 34 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Current measurement circuit provided AT command controlled Voltage measurement circuit provided AT command controlled Integrated HW protection for Antenna Short Circuit 40mA current draw 3 5 2 Combined Cellular GPS Antenna Require
52. he different levels of the two signal sets As for the RS232 translation there is a selection of single chip translators but since the translation requires very few components a discrete design can also be used The following example illustrates a potential inexpensive translator circuit for a 5V transmitter receiver wee y Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 40 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 5V VCC To OEM Hardware FROM TXD 5V CC864 TXD 2 6V The following example illustrates a potential inexpensive translator circuit for a 5V receiver TXD_5V gt LT XD_2 6V 5V_VCC 47kQ lt _ 2 6V_VCC A power source of the internal interface voltage corresponding to the 2 6V CMOS high level is available at the VAUX1 pin on the connector with an absolute maximum output current of ImA A maximum of 9 resistors of 4 7 KQ pull up can be connected to the VAUX1 pin provided no other devices are connected to it The pulled up lines are module s input lines connected to open collector outputs in order to avoid latch up problems on the module Care must be taken to avoid latch up on the module and the use of this output line to power electronic devices shall be avoided This is especially true for devices that generate spikes and noise such as switching level translators an
53. hout notice Such changes will nevertheless be incorporated into new editions of this document All rights reserved 2010 Telit Communications S p A e Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 2 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Contents 1 Introduction 2 HE ERU UR RR UR RD OR UR CR RSS UN De RR da 6 Tete 29 COWS d ee eg e ee emu ee Du ume 6 Lila EE 6 Lace Contact Information SUPPORT resi aa a ada 6 dou Product A EA 7 14 13 General Specifications i43 9E x RR Rue a Sie gate Nene 7 14 23 Receiver Specifications ssi xx dee Heed i Rr wie RU CR CEU e d Be Re ee 7 14 3 Transmitter Specifications eie a rua wie Re UR CEU o de UR Re ae 7 1 4 4 gpsOne Receiver Specifications sece ie dentis 8 154 Safety Recommendat OMS sidus aree om dE RORIS S 9 L 5 1 Local regulatiOhS 4 9 guy e we e Ve RO UE Pe uy eem ine pes EEN Reg 9 1 5 2 Wiring and ImstallatiOn ss ge oon Ryo yov we EEN Ee pns 9 1 5 3 Electrostatic Discharge dai da ak Swe wea EE See wea aa 9 1 5 4 PVE SINGS la Genie Gee e Mae e weed datar aoe ene do 9 1 555 Disassembly esses ove we ie eux Sa a Y ni ME GE a 10 babe DOCUMENT Organizo ON A e ET e reg eges 10 lw Text CONVENTLONS 24 08 ho ew aed see 9 Ex Ge Eee ue go E s 10 Lee Related DOCUMENTS si avs iw
54. liance Information This Class B digital apparatus complies with Canadian ICES 003 This device complies with RSS 102 RF Exposure Compliance o e Reproduction forbidden without Telit Reserved Page 68 of 68 Communications S p A s written authorization All Rights
55. lue close to the amplifier power input pins The biasing voltage of the amplifier must be stabilized with low ESR e g tantalum capacitor of adequate value The figure below shows an example of car kit amplifier schematic wee y Reproduction forbidden without Telit Communications S p A s written authorization All Rights Page 50 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 HIGH POWER EXT EAR AMPLIFIER 6w i i i B i H D i i A 1 i U301 i H TD4BH843SF N1 2 En m 5 E a 3 d l A II C al E agoe d TO SPEAKER l IN A 1 50F 15 BOHM 4 m B I z r REMS EE os a i d C C EAR rf WODE 7 D i e i cao2 legos 2 i zl MR 1 40onr sonour e L CMTE Ex d 1 46v KA i PL901 i I H7 A i wa C940 C908 e f C l lo GNO sour 400nF 2 o MUTE CONTROLLED i be 3 TTT KN 16v e 1 i gil 0503 i A GNO H i i 77 alios AMPLI POWER CONTROL i D i I i written authorization All Rights meee y i Reproduction forbidden without Telit Communications S p A s Reserved Page 51 of 68 3 10 3 11 Reserved lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 PCM Digital Audio Interface The CC864 DUAL can support a PCM interface for digital audio The PCM interface
56. lum ESR capacitor rated to at least 10V with adequate capacity must be provided to cut the current absorption peaks A protection diode must be inserted close to the power input to protect the module from voltage polarity inversion uous E E E Les Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 26 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 3 4 Battery Charge Control Circuitry Design Guideline The CC864 DUAL provides support circuitry for charging a lithium ion battery utilizing four firmware controlled charging modes e Trickle e Constant current e Constant voltage e Pulsed Battery voltage external supply voltage and total detected current measurements are available to the module firmware through the analog multiplexer which allows the firmware to monitor charging parameters and control the charging process which progresses as follows e Charging begins with trickle charging which limits the current and avoids pulling the VDD down e Once a minimum battery voltage is established using trickle charging constant current charging is enabled by the firmware in order to charge the battery quickly this mode is sometimes called fast charging e When the Li ion battery approaches its target voltage through constant current charging the charge is completed using either constant voltage or puls
57. ments Path 2 The CC864 DUAL can support the use of a combined Cellular GPS antenna without the need for an additional external diplexer The CC864 DUAL contains the required di tri plexers and RF path However the combined Cellular GPS path adds about 1 dB of loss for GPS and consequently affects performance This configuration cannot support an active GPS antenna 3 9 3 Linear and Patch GPS Antennas Path 1 Linear or patch antennas result in 3 dB of loss relative to a circularly polarized CP antenna Spherical gain response opposed to a hemispherical gain response will aggravate the multipath behavior and create poor position accuracy leading to 50m accuracy or less in some situations Poor LHCP relative to RHCP response can have multiple gain nulls and average gain is far lower than for a good path 9dB 3 5 4 Active GPS Antenna LNA and Front End Design Considerations Path 1 The antenna LNA gain should be between 12dB and 16dB assuming a patch antenna with 3dBi of gain is utilized Excessive LNA gain gt 17dB can introduce jamming spurs degrade 3IP and saturate the receiver primarily due to the fact that the CC864 DUAL already has an internal GPS LNA 13dB gain The active antenna must operate with a supply voltage between 3 4 to 4 2V DC No other circuitry is required The external active antenna for CC864 DUAL must fulfill the following requirements
58. nal voltage must be less than 0 V so that some form 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 several available differing in the number of drivers and receivers and levels T NOTE Always use a true RS232 level translator and not a translator for RS485 or any other standard 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 five drivers and three receivers are required The figure below shows an example of level translation circuitry SP3238EEA 3V ET De C1 VCC V C1 V G2 T oo 1 00n 100n 100n T Io C2 GND d DCD UART1 gt 7T1_IN T1 OUT DCD RS232 DSR UART1 E 34 12 IN T2 OUT DSR_RS232 RXD UART1 L T3_IN T3 OUT gt RXD RS232 CTS UART1 L 7TA IN T4 OUT CTS_RS232 RI UART1 gt T5_IN T5 OUT C RI RS232 RTS UART1 1 7R1 OUT R1 IN lt A RTS RS232 TXD UART1 R2 OUT R2 IN 7 TXD RS232 DTR UART1 R3_ OUT R3 IN lt A DTR RS232 NOTE In this case VIn has to be set with a value compatible
59. nect power before the power off procedure is completed This may cause severe damage and render the module inoperable 3 23532 Hardware Shutdown To turn the CC864 DUAL off the ON OFF Pin must be tied low for 2 second and then released The same circuitry and timing used for powering on the module must be used for powering off the module The device shuts down after the ON_OFF pin is released When the hold time of ON OFF is above 2 seconds CC864 DUAL goes into the finalization state and finally will shut down PWRMON at the end of this state The period of the finalization state can differ according to the situation in which the CC864 DUAL is so it cannot be fixed definitely Normally it will be above 10 seconds later from releasing ON OFF and DTE should monitor the status of PWRMON to see the actual power off V_ _ _ _ _ _ _ _ _ VBATTERY 2 sec lt HOLD TIME lt 3 sec ON OFF AA A ee PWRMON Variable ___ Above 10sec To check if the device has powered off hardware line PWRMON must be monitored When PWRMON goes low the device has powered off ur A WEE lt lt ee Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 19 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 2 3 2 Software Shutdown Th
60. nput for Data terminal ready CMOS Signal DTR from DTE 2 OW 30 C125 RING O Output for Ring indicator CMOS Signal RI to DTE 2 6V 31 Cl1O5S RIS nput for Request to send CMOS signal RTS from DTE 2 OW 32 C109 DCD O Output for Data carrier detect CMOS Signal DCD to DTE DON USB 35 SIS 10D IL DS JUD A 47K CMOS De OY 48 USB VBUS AI USB VBUS power supply 5V AO TORUS EEDE I O USB Data USB Internal 2 WS 6 Transceiver In Output V 80 USB D I O USB Data USB Internal 2 8V 3 6 Transceiver In Output V DAC and ADC 37 ADC INI AI Analog Digital converter input A D 38 ADC JUNZ AI Analog Digital converter input A D 39 ADC CC AI Analog Digital converter input A D 40 DAC OUT AO Digital Analog converter output D A PDM PCM 36 PCM CLOCK I O Telit GPIO Configurable GPIO CMOS ON 63 TEPIO 10 19CM_ TX 1 0 Telit GI X010 Configurable GPIO CMOS PION 65 TGPIO 18 PCM RX I O Telit GPIO18 Configurable GPIO CMOS 2 OW 21 TGPIO_17 PCM_SYN 1 0 Telit sto Configurable GPIO CMOS 9 Ste Miscellaneous Functions 45 STAT_LED O Status indicator led CMOS 1 SV 46 GND Ground Ground 49 PWRMON O Power ON Monitor CMOS 2 OW 50 VAUXI Power output for external 2 O5W accessories AT command driven 150mA 51 CHARGE AT Power ey E Li 7 ii Communications S p A s written authorization All Rights ee LV Reproduction forbidden without Telit Reserved Page 65 of 68 lit CC864 DUAL Hardware User Guide
61. on forbidden without Telit Communications S p A s written authorization All Rights Page 6 of 68 Reserved lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 1 4 Product Overview The CC864 DUAL is a CDMA 1XRTT wireless module designed to have the same form fit and function as its GSM GPRS counterpart product the GC864 QUAD As a result integrators and developers are able to design applications once and take advantage of the global coverage and service flexibility allowed by the combination of the most prevalent cellular technologies worldwide With its ultra compact design and extended operating temperature range the Telit CC864 DUAL module is the perfect platform for m2m applications mobile data and computing devices It also incorporates gpsOne capability for applications in mobile environments such as telematics personal and asset tracking 1 4 1 General Specifications Parameter Description External access Code division multiple access CDMA protocol CDMA2000 1x Rel A and Rel B Data Rate 153 6 Ko s iull ecwuples GPS Standalone GPS SGPS AGPS Vocoder EVRC 13kOCELP 4GV Operating 30 80 temperature 1 4 2 Receiver Specifications Parameters Descriptions Frequency range Cellular 869 894 MHz PCS 1930 1990 Miz Sensitivity Better than 108 dBm Input dynamic range Ee O dBm 1 4 3 Transmitter Specifications
62. ositioning System HF Hands free AS Inter Integrated Circuit JDR Jammer Detector JTAG Joint Test Action Group ANSI ICEEE Std 1149 11990 MT Micro Telephone or Handset MT or HS PCM Pulse Coded Modulation PDM Pulse Density Modulation in a DAC RIC Real Time Clock R UIM Removable User Identity Module S GIE S Simultaneous GPS TGPIO Telit General Purpose Input Output UART Universal Asynchronous Receiver Transmitter USB Universal Serial Bus VAUX Voltage Auxiliary ZIF Zero Intermediate Frequency Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 63 of 68 gt lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 6 Appendix Pin Allocation The table below lists the complete pin allocation on the system connector of the CC864 DUAL S A A Internal Pin Signal I O Function Pull up Type Power Supply 1 VBATT Main power supply Power 2 VBATT Main power supply Power E VBATT Main power supply Power 4 VBATT Main power supply Power 5 GND Ground Power 6 GND Ground Power 7 GND Ground Power Audio 8 AXE T Hands free switching 100K CMOS ZONI 9 EAR_HF AO denes Free ear ow lasse Audio JL BNR EU AO Hands free ear output phase Audio LI BAR MAL AO Handset earphone signal output Audio phase 12 EAR MT AO Hands
63. r hardware solution for each function e Describing common errors to be avoided This document is not intended to provide an overall description of all hardware solutions and all products that may be designed The solutions suggested serve as a guide or starting point for developing a product with the Telit CC864 DUAL module However avoiding the most common errors described in this document should be regarded as UA mandatory Audience This manual is intended for hardware developers who design products that integrate the CC864 DUAL module Contact Information Support For general information technical supports to report documentation errors or to order manuals contact Telit s Technical Support Center TS EMEA telit com ITSC at TS NORTHAMERICA telit com TS LAT NAMER CAGtelit cort TS APACGtelit com or use http www telit com en products technical support center contact php For detailed information about where to buy 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 documentation re E e Reproducti
64. re User Guide 1vv0300791 Rev 6 2012 02 13 2A CDMA 1A current peaks This trace should be as short as possible e 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 will reduce the radiated field noise at the switching frequency usually 100 500 kHz e The use of a good common ground plane is suggested e The placement of the power supply on the board should guarantee that the high current return paths in the ground plane are not overlapped with any noise sensitive circuitry such as the microphone amplifier buffer or earphone amplifier 3 4 Antenna Requirements This radio transmitter 5131A CC864DUAL has been approved by Industry Canada to operate with the antenna types listed below with the maximum permissible gain and required antenna impedance for each antenna type indicated Antenna types not included in this list having a gain greater than the maximum gain indicated for that type are strictly prohibited for use with this device The table below outlines antenna requirements for the CC864 DUAL Antenna Requirements CDMA PCS Frequency range Tx 824MHz 849MHz Tx 1850MHz 1910MHz Rx 869MHz 8 94MHz Rx 1930MHz 1990MHz Gain lt 5 12dBi lt 6 12dBi Impedance 50 Ohm Input power gt 24dBm max power in CD
65. rovides three on board ADC converters The actual ADC is a Sample and Hold Successive Approximation ADC shared resource that is multiplexed between many peripherals Parameter Min Max Input Voltage Range OV Z9 V Resolution amp B OLE Accuracy Conversion time 15 4uS Analog measurement output or sensor output e g battery voltage temperature can be connected to the ADC pin with proper signal conditioning and can be read via AT command Note In a product variant including the default A configuration where the CC864 DUAL has external active GPS antenna support only one of ADC2 or ADC3 can be used even when the active antenna is turned off V_ANT_GPS and I_ANT_GPS monitoring lines are internally connected to these ADCs and even when switched off the configuration will allow sufficient current leakage between channels 2 and 3 to cause MEASUEAMSING ertioils The conversion time is 15 4uS An Rin of 5K maximum with Ci 12pF leads to a maximum of 233K external resistance to allow proper conversion 3 11 1 2 Using ADC Converter The AT command AT ADC 1 2 is available to use the ADC function The read value is expressed in mV Refer to SW User Guide or AT Commands Reference Guide for the full description of this function 3 11 2 DAC Converter 3 11 2 1 Description The CC864 DUAL provides a digital to analog converter DAC The DAC is a PDM output
66. s age m Vos T a Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 8 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 1 5 Safety Recommendations 1 5 1 Local regulations Verify that the use of this product is permitted in the country intended and in the required product environment The use of this product may be dangerous and thus must be avoided where e Interfacing with other electronic devices in environments such as hospitals airports etc is a concern e A risk of explosion exists such as in the proximity of gasoline oil refineries etc The integrator is responsible for enforcing local and specific environmental regulations on the product For further details refer to Chapter 1 7 for related documents 1 5 2 Wiring and Installation Always follow the instructions in this guide when wiring the product The module must be supplied with a stable voltage source and the wiring must conform to security and fire prevention regulations The installation of external components must be well designed in order to ensure the proper functioning of the module 1 5 3 Electrostatic Discharge Avoid any contact with the pins because electrostatic discharge can damage the product 1 5 4 Antennas Every module must be equipped with a compatible antenna The antenna must be installed in
67. supports clock rates from 128 kHz to 2 048 MHz and enables communication with an external CODEC or host application Linear yu law and A law CODECS are all supported by the PCM interface The PCM interface can be configured and controlled by AT commands The PCM interface is only available on voice enabled product versions Pin E Nusber Name I O Description Level 36 Ca CIE 1 0 PCM_CLOCK CMOS 2 6V 63 TGPIO 10 PCM TX 1 0 TGPIOTO EROS Z 9W Configurable GPIO PCM TX 65 TGPIO 18 PCM RX 1 0 TGPIO18 CMOS 2 6V Configurable GPIO PCM RX 71 TEPIO 3 7 8 W SC 1 0 geo CMOS 2 6V Configurable GPIO PCM SYNC ADC DAC Interface The CC864 DUAL provides three ADC converters and one DAC converter Pin No Name Description 37 ADC_IN1 Analog Digital converter input 38 ADC_IN2 Analog Digital converter input EI ADC IN3 Analog Digital converter input 40 DAC OUT Digital Analog converter output Note ADC_IN2 and ADC_IN3 cannot be used on product variants that have active GPS antenna support t S dos wee ee E 7 Reproduction forbidden without Telit E LE Communications S p A s written authorization All Rights Page 52 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 11 1 ADC Converter 3 11 1 1 Description The CC864 DUAL p
68. tching variety it can be placed close to the inductor to cut the ripple provided the PCB trace from the capacitor to the module is wide enough to ensure no voltage drops during the transmission current peaks e The protection diode must be placed close to the input connector where the power source is drained e The PCB traces from the input connector to the power regulator IC must be wide enough to ensure no voltage drops occur during the transmission current peaks Note GSM UMTS specific consideration This recommendation is not made to save power but instead 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 a noise floor at the burst base frequency For this reason while a voltage drop of 300 400 mV may be acceptable for power loss it may not be acceptable for noise considerations If the application does not have an audio interface but only uses GSM UMTS data then this noise may not be so disturbing and power supply layout design can be more forgiving For the reasons outlined above the PCB traces to the module and the bypass capacitor must be wide enough to ensure no significant voltage drops occur during the GSM Gg eun s K 4 Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 31 of 68 lit CC864 DUAL Hardwa
69. tion is considerably reduced 3 13 Miscellaneous Interface Signals 3 13 1 VAUX1 A regulated power supply output is provided to supply small devices This output is active when the module is on and turns off when the module is shut down The operating range characteristics of the supply are listed in the table below Parameters Min Typical Max Output voltage D LN 2 65V 2 68V Dmrtenng eni 150mA Output bypass luE capacitor 3 13 2 VRTC The VRTC pin brings out the real time clock supply which is separated from the rest of the module s internal power supply allowing the RTC to operate when all the other module functionality is turned off A coin cell or backup capacitor can be added to this pin However a backup capacitor does not support the RTC feature The coin cell or backup capacitor is charged when the module is on and supplies power to the RTC circuit when the module is turned off WARNING NO devices must be powered from this pin Reserved Page 58 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 3 13 3 STAT LED Network Status LED This pin is an open collector output signal with an internal pull up resistor The STAT LED pin shows information on the network service availability and call status The STAT LED pin usually needs an external transistor to drive an external LED Therefore the status indicated in the following table is
70. uences for turning the module ON and OFF VBATTERY ON OFF PWRMON D A Internal state 3 3 Power Supply The electrical design of the power supply strongly depends on the power source from which the power is drained The following three common categories are discussed e 5V input typically PC internal regulator output e 12V input typically automotive e Battery e e BA gt e 0 Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 21 of 68 I lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 Power Supply Nominal Supply Voltage 3eo9 Y Max Supply Voltage 4 2V Normal Operating Voltage Range Sol Y I 20y TIP In order to be compatible with the sibling wireless modems in the Telit Unified Form Factor the power supply should be designed for 2A current peaks as this will allow the use of a GSM GPRS modem with the same design Mode Average mA Mode Description SWITCHED OFF ItaL eeu liy c 10uA Module supplied but switched off Maximum 40uA IDLE mode with GPS OFF Standby mode no call in progress GPS OFF AT CFUN 1 46 Normal mode rull functionality oi che module AT CFUN 4 0 4 Disabled TX and RX modules 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 to send AT AT CFUN
71. ut Low CETO IOVI 62m TGPIO 12 1 0 Configurable CMOS Input Low GPIO IOVI NA TGPIO 13 1 0 Configurable CMOS Input Low GPIO 2 OW 60 TGPIO_14 I O Configurable CMOS Tnput Low CHIO 2 OW 61 TGPIO_15 1 0 Configurable CMOS Input Low GPIO POI 75 TGPIO 16 I O Configurable CMOS Input Low EGLO EECH Reproduction forbidden without Telit Communications S p A s written authorization All Rights Reserved Page 55 of 68 lit CC864 DUAL Hardware User Guide 1vv0300791 Rev 6 2012 02 13 PIO 17 1 0 Cox 3 eosealode eM Input Low PCM_SYNC GPIO 2 6 65M TGPIO 18 1 0 Configurable CMOS Input Low PCM RX ELIO ZO 1 GPTO 19 T O Configurable CMOS Input Low GPIO ZION Dem TGPIO 20 1 0 Configurable CMOS Input Low CRIO O 72 TGPIO 21 1 0 Configurable CMOS Input High CHIO GI 64 TGPIO 22 I O Configurable CMOS Input Low GPIO Lo Sw Warning TGPIO_22 has 1 8V CMOS level tolerance to be compatible with the Telit Unified Form Factor 3 12 1 Using a GPIO pin as Input The GPIO pins when used as input can be connected to the digital output of another device to report its status provided this device has interface levels compatible with the 2 6V CMOS levels of the GPIO 3 12 2 Using a GPIO pin as Output The GPIO pins when used as outputs can drive 2 6V CMOS digital devices or compatible hardware When set as outputs the pins have a push pull output and therefore the pull up resistor

CC864-Dual Hardware User Guide R6

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