Telit Communications S p A CC864-DUAL DUAL BAND CDMA/GPS Module User Manual User MAnual

Telit Communications S.p.A. DUAL BAND CDMA/GPS Module User MAnual

User MAnual

CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 - 12-Nov-07
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 2 of 39 Contents 1. Overview ................................................................................................................................................... 4 1.1. General Specifications........................................................................................................................ 4 1.2. Receiver Specifications ...................................................................................................................... 4 1.3. Transmitter Specifications .................................................................................................................. 5 1.4. gpsOne Receiver Specifications ........................................................................................................ 5 2. Mechanical Dimensions .......................................................................................................................... 5 3. Hardware Commands .............................................................................................................................. 6 3.1. Turning ON the CC864-Dual .............................................................................................................. 6 3.2. Turning OFF the CC864-Dual ............................................................................................................ 6 3.3. Hardware shutdown ........................................................................................................................... 6 3.4. Hardware RESET Reboot .................................................................................................................. 7 4. Power Supply ........................................................................................................................................... 7 4.1. Power Supply Requirements .............................................................................................................. 7 4.2. Electrical Design Rules ...................................................................................................................... 8 4.2.1. +5V Input Source Power Supply Design Guidelines .......................................................................... 8 4.2.2. +12V Input Source Power Supply Design Guidelines ........................................................................ 8 4.2.3. Battery Source Power Supply Design Guidelines .............................................................................. 9 4.3. Battery Charge control Circuitry Design Guideline .......................................................................... 10 4.3.1. Trickle charging ................................................................................................................................. 11 4.3.2. Constant current charging ................................................................................................................ 12 4.3.3. Constant voltage charging ................................................................................................................ 12 4.3.4. Pulse charging .................................................................................................................................. 12 4.4. Thermal Design Guidelines .............................................................................................................. 13 4.5. Power Supply PCB layout Guidelines .............................................................................................. 14 5. Antenna ................................................................................................................................................... 15 5.1. Antenna Requirements ..................................................................................................................... 15 5.2. Antenna Connector .......................................................................................................................... 15 5.3. Antenna installation Guidelines ........................................................................................................ 15 6. PINs allocation ....................................................................................................................................... 16 7. Interface Description ............................................................................................................................. 20 7.1. UART1(RS232 level translation) ...................................................................................................... 20 7.1.1. 5V UART level translation ................................................................................................................ 23 7.2. R-UIM Holder ................................................................................................................................... 23 7.2.1. R-UIM Design Guidelines ................................................................................................................. 24
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 3 of 39 7.3. USB Port .......................................................................................................................................... 24 7.4. IIC Bus Interface ............................................................................................................................... 25 7.5. ADC/DAC signals ............................................................................................................................. 25 7.6. General Purpose I/O ........................................................................................................................ 26 7.6.1. Logic level specifications .................................................................................................................. 27 7.6.2. Using a GPIO pad as Input .............................................................................................................. 27 7.6.3. Using a GPIO pad as Output............................................................................................................ 28 7.6.4. TGPIO_03/AUDIOMUTE.................................................................................................................. 28 7.6.5. TGPIO_04/CONVERSATION ........................................................................................................... 28 7.6.6. TGPIO_05/RFTXMON ..................................................................................................................... 28 7.6.7. TGPIO_06/ALARM ........................................................................................................................... 29 7.6.8. TGPIO_07/BUZZER ......................................................................................................................... 29 7.6.9. TGPIO_08/POWER_SAVING .......................................................................................................... 29 7.6.10. TGPIO_11/VIBRATOR .............................................................................................................. 30 7.6.11. TGPIO_12/CALL_KEY ............................................................................................................. 30 7.6.12. TGPIO_13/ACTIVE .................................................................................................................. 30 8. Audio Section ......................................................................................................................................... 31 8.1. Differential Audio Interface design ................................................................................................... 31 8.1.1. General Design Rules ...................................................................................................................... 31 8.1.2. Microphone design ........................................................................................................................... 32 8.2. Receiver design ................................................................................................................................ 32 8.3. Speaker design ................................................................................................................................. 33 8.4. Single-ended Audio Interface design (Hand-free or earphone design) ............................................ 33 8.5. Car kit speakerphone design ........................................................................................................... 34 8.6. PCM Interface .................................................................................................................................. 34 9. Miscellaneous signals ........................................................................................................................... 35 9.1. VAUX1 .............................................................................................................................................. 35 9.2. VRTC ................................................................................................................................................ 36 9.3. STAT_LED ........................................................................................................................................ 36 9.4. PWRMON ......................................................................................................................................... 37 9.5. AUDIO_AUX ..................................................................................................................................... 37 10. Safety Recommendations ............................................................................................................. 38 11. Reference ........................................................................................................................................ 39 12. Document Change Log .................................................................................................................. 39
Notice OEM integrators and installers are instructed that the phrase. This device contains transmitter FCC ID: RI7CC864-DUAL must be placed on the outside of the host. Warning: Exposure to Radio Frequency Radiation The radiated output power of this device is far below the FCC radio frequency exposure limits. Nevertheless, the device should be used in such a manner that the potential for human contact during normal operation is minimized. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna should not be less than 20cm during normal operation. The gain of the antenna for Cellular band must not exceed-2.000 dBi. The gain of the antenna for PCS band must not exceed -3.00000dBi.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 4 of 39 1. Overview The aim of this document is the description of some hardware solutions useful for developing a product with the Telit CC864-Dual module. In this document all the basic functions of a mobile phone will be taken into account; for each one of them a proper hardware solution will be suggested and eventually the wrong solutions and common errors are to be avoided. Obviously this document can not embrace the whole hardware solutions and products that may be designed. The wrong solutions to be avoided shall be considered as mandatory, while the suggested hardware configuration shall not be considered mandatory, instead the information given shall be used as a guide and a starting point for properly developing your product with Telit CC864-Dual module. For further hardware details that may not be explained in this document. 1.1. General Specifications Parameters Descriptions External Access Code Division Multiple Access CDMA Protocol IS-95A/B, IS-98A, IS-126, IS-637A, IS-707, IS-2000 Data Rate 153.6Kbps(Full-duplex) GPS SGPS/Standalone Vocoder EVRC, 13kQCELP Number of Channel 832 for Cellular, 1200 for PCS Operating Temperature -30℃ ~ +80℃ 1.2. Receiver Specifications Parameters Descriptions Frequency Range 869~894Mhz, 1930~1990Mhz Sensitivity Below -104dBm Input Dynamic Range -25dBm ~ -104dBm
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 5 of 39 1.3. Transmitter Specifications Parameters Descriptions Frequency Range 824~849Mhz, 1850~1910Mhz Power Class Class Ⅲ for Cellular, Class Ⅱ for PCS Power Range 0.2W ~ 1.0W Nominal Power 0.27W(24.31dBm) 1.4. gpsOne Receiver Specifications Parameters Descriptions Frequency Range L1, 1575.42Mhz C/A Code 1.023Mhz Chip Rate Receiver Sensitivity -152dBm 2. Mechanical Dimensions The Telit CC864-Dual module overall dimensions are: y Length : 36.25㎜ y Width : 30㎜ y Thickness : 4.8㎜
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 6 of 39 3. Hardware Commands 3.1. Turning ON the CC864-Dual To turn ON the CC864-DUAL the pad ON/OFF must be tied for at least 1 second and then released. 3.2. Turning OFF the CC864-Dual The turning off of the device can be done in two ways: . by software command . by hardware shutdown When the device is shut down by software command or by hardware shutdown, it issues to the network a detach request that informs the network that the device will not be reachable any more. 3.3. Hardware shutdown To turn OFF the CC864-Dual the pad ON/OFF must be tied for at least 1 second and released. The same circuitry and timing for the power on shall be used. The device shuts down after the release of the ON/OFF pad.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 7 of 39 3.4. Hardware RESET Reboot To unconditionally Reboot the CC864-Dual, the pad RESET must be tied low for at least 200 milliseconds and the released. A simple circuit to do it is : 4. Power Supply The power supply circuitry and board layout are a very important part in the full product design and they strongly reflect on the product overall performance, hence read carefully the requirements and the guidelines for a proper design. 4.1. Power Supply Requirements y Nominal Supply Voltage : 3.8V y Max Supply Voltage : 4.2V y Supply voltage range : 3.6V ~ 4.2V y Max Peak current consumption(impulsive) : 1A y Max Average current consumption during CDMA transmission : 700mA y Average current during Power saving(Sleep mode) : ≤ 2mA
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 8 of 39 The current peaks can be as high as about 1A. Therefore the power supply has to be designed in order to withstand with these current peaks without big voltage drops; this means that both the electrical design and the board layout must be designed for this current flow. If the voltage goes under 3.3V, the module will be shut down automatically. 4.2. Electrical Design Rules The electrical design of the power supply depends strongly from the power source where this power is drained. We will distinguish them into three categories : y +5V input(typically PC internal regulator output) y +12V input(typically automotive) y Battery 4.2.1. +5V Input Source Power Supply Design Guidelines The desired output for the power supply is 3.8V, hence there’s not a big difference between the input source and the desired output and a linear regulator can be used. A switching power supply will not be suited because of the low drop out requirements. When using a linear regulator, a proper heat sink shall be provided in order to dissipate the power generated. A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks close to the CC864-Dual, a 100µF tantalum capacitor is usually suited. Make sure the low ESR capacitor on the power supply output(usually a tantalum one) is rated at least 10V. A protection diode should be inserted close to the power input, in order to save the CC864-DUAL from power polarity inversion. 4.2.2. +12V Input Source Power Supply Design Guidelines The desired output for the power supply is 3.8V, hence due to the big difference between the input source and the desired output, a linear regulator is not suited and shall not be used. A switching
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 9 of 39 power supply will be preferable because of its better efficiency with the 1A peak current load represented by the CC864-Dual. When using a switching to the regulator, a 500㎑ or more switching frequency regulator is preferable because of its smaller inductor size and its faster transient response. This allows the regulator to respond quickly to the current peaks absorption. For car PB battery the input voltage can rise up to 15.8V and this should be kept in mind when choosing components: all components in the power supply must withstand this voltage. A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks, a 100µF tantalum capacitor is usually suited. Make sure the low ESR capacitor on the power supply output(usually a tantalum one) is rated at least 10V. For car applications a spike protection diode should be inserted close to the power input, in order to clean the supply from spikes. A protection diode should be inserted close to the power input, in order to save the CC864-Dual from power polarity inversion. This can be the same diode as for spike protection. 4.2.3. Battery Source Power Supply Design Guidelines The desired nominal output for the power supply is 3.8V and the maximum voltage allowed is 4.2V, hence a single 3.7V lithium-ion cell battery type is suited for supplying the power to the CC864-Dual module. The three cells Ni/Cd or Ni/MH 3.6V Nom. Battery types or 4V PB types must not be used directly because their maximum voltage can rise over the absolute maximum voltage for the CC864-Dual and damage it. A Bypass low ESR capacitor of adequate capacity must be provided in order to cut the current absorption peaks, a 100uF tantalum capacitor is usually suited. A protection diode should be inserted close to the power input, in order to save the CC864-Dual from power polarity inversion. Otherwise the battery connector should be done in a way to avoid polarity inversion when connecting the battery.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 10 of 39 4.3. Battery Charge control Circuitry Design Guideline The CC864-Dual provides support circuitry for charging a lithium-ion battery, utilizing as many as four software-enabled charging techniques: trickle, constant current, constant voltage, and pulsed. Battery voltage, external supply voltage, and total detected current measurements are available to software through the analog multiplexer. This allows the software device to monitor charging parameters, make decisions, and control the charging process. Charging begins with trickle charging, a mode that limits the current and avoids pulling VDD down. Once a minimum battery voltage is established using trickle charging, constant current charging is enabled via software to charge the battery quickly - this mode is sometimes called fast charging. Once the Li-ion battery approaches its target voltage (through constant current charging), the charge is completed using either constant voltage or pulse charging. Further discussion of all charging modes is provided in the sections identified within bellowed picture. The main battery charging sequence is
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 11 of 39 4.3.1. Trickle charging Trickle charging of the main battery, enabled through software control and powered from Vdd, is provided by the CC864-Dual. This mode is used to raise a severely depleted battery’s voltage to a level sufficient to begin fast charging. Fast charging with a high-current supply should not be attempted on a deeply discharged battery –the battery would draw excessive current, pull the Vdd voltage down, and possibly cause a handset malfunction or shutdown due to an under-voltage lockout condition. If the CC864-Dual implements current limiting, the excessive current would combine with the potentially large voltage drop across the pass transistor to generate unwanted heat within the device. To avoid these problems the CC864-Dual provides a constant, low-current charging mode - trickle charging. Trickle charging is enabled through software control and should be used until the main battery
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 12 of 39 reaches its desired threshold, 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. Software must terminate trickle charging based on battery voltage measurements and the battery type – there is not a preset termination threshold. 4.3.2. Constant current charging The CC864-Dual supports constant current charging of the main battery. During constant current charging the battery is charged with a constant current(600mA). As the battery voltage rises and approaches its desired value(4.2V) the charging current begins to decrease. This is the end of constant current charging and the beginning of residual charging. The target value is set by SBI-programming to a value higher than the desired final voltage to overcome the battery internal ESR and achieve faster charging. Software monitors the voltage and takes the appropriate action to terminate the constant current charging mode. Charging continues with residual charging(either constant voltage or pulsed). 4.3.3. Constant voltage charging Once constant current charging of a lithium-ion battery is finished, the charging continues using either constant voltage or pulsed techniques. The constant voltage charging is very similar to its constant current mode. The battery voltage is constant(or nearly so) while the charging current decreases exponentially for the remaining charger process. The end of constant voltage charging is typically detected by allowing voltage operation for a predetermined duration beyond crossing the VBATDET threshold in the charger IC(on the order of one-half to two hours). It is important to limit this predetermined duration – do not allow charging to continue indefinitely! Charging too long will damage the battery….consult battery manufacturers for specific recommendations. 4.3.4. Pulse charging Pulse charging is implemented by switching the pass transistor in the charger IC on and off ; phone
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 13 of 39 electronics should draw minimal current so the battery’s open circuit voltage can be measured accurately during the off interval. Pulse charging, compared to constant voltage charging, provides better voltage accuracy, reaches full charge more quickly, and dissipates less transistor power when switching from constant current charging. Pulse charging is enabled through software control, uses the same hardware as constant current or constant voltage charging, but repetitiously opens and closes the pass transistor to deliver current pulses to the battery. As the battery charges it reaches the VBADET threshold, causing the internal charger IC counter T_ON to start. The pass transistor stays closed(and the battery continues charging) until the T_ON counter expires. Then the pass transistor is opened, charging stops, and another internal counter(T_OFF) is enabled. Without continued charging, the battery voltage may drop-if it drops too far, additional charging is needed. If it holds its voltage, it is fully charged and the charging process is terminated. This is one purpose of pulsed operation – to check and recheck the battery’s open circuit voltage, confirming a full charger before terminating the process. 4.4. Thermal Design Guidelines The thermal design for the power supply heat sink should be done with the following specification: y Average current consumption during transmission at Max level : 700mA y Average current consumption during transmission at Min level : 220mA y Average current during Idle mode : 60mA y Average current during sleep mode : 1mA y Average current during hibernation mode : 275nA Considering the very low current during idle, especially if Power Saving function is enabled, it is possible to consider from the thermal point of view that the device absorbs current significantly only during calls. If we assume that the device stays into transmission for short periods of time(let’s say few minutes) and then remains for a quite long time in idle(let’s say one hour), then the power supply has always the time to cool down between the calls and the heat sink could be smaller than the calculated one for 700mA maximum RMS current, or even could be the simple chip package(no heat sink) Moreover in the average network conditions the device is requested to transmit at a lower power
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 14 of 39 level than the maximum and hence the current consumption will be less than 700mA. For these reasons the thermal design is rarely a concern and the simple ground plane where the power supply chip is placed can be enough to ensure a good thermal condition and avoid overheating. This generated heat will be mostly conducted to the ground plane under the CC864-DUAL, you must ensure that your application can dissipate it. 4.5. Power Supply PCB layout Guidelines The Bypass low ESR capacitor must be placed close to the CC864-Dual power input pads or in the case the power supply is a switching type it can be placed close to the inductor to cut the ripple provided the PCB trace from the capacitor to the CC864-Dual is wide enough to ensure a dropless connection even during the 1A current peaks. The protection diode must be placed close to the input connector where the power source is drained. The PCB traces from the input connector to the power regulator IC must be wide enough to ensure no voltage drop occur when the 1A current peaks are absorbed. The PCB traces to the CC864-Dual and Bypass capacitor must be wide enough to ensure no significant voltage drops occur when the 1A current peaks are absorbed. Try to keep this traces as short as possible. The PCB traces connecting the Switching output to the inductor and the switching diode must be kept as short as possible by placing the inductor and the diode very close to the power switching IC(only for switching power supply). This is done in order to reduce the radiated field(noise) at the switching frequency(100~500㎑ usually) The use of a good common ground plane is suggested. The placement of the power supply on the board should be done in such a way to guarantee that the high current return paths in the ground plane are not overlapped to any noise sensitive circuitry as the microphone amplifier/buffer or earphone amplifier. The power supply input cables should be kept separate from noise sensitive lines such as microphone/earphone cables.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 15 of 39 5. Antenna The antenna connection and board layout are the most important part in the full product design and they strongly reflect on the product overall performance, hence read carefully the requirements and the guidelines for a proper design. 5.1. Antenna Requirements Parameters Descriptions Frequency range(CDMA) Tx : 824㎒ ~ 849, Rx : 869 ~ 894㎒ Frequency range(PCS) Tx : 1850㎒ ~ 1910㎒, Rx : 1930㎒ ~ 1990㎒ Frequency range(GPS) 1575.42㎒ Impedance 50Ω VSWR recommended ≤ 2 Radiation pattern Omni-directional Polarization Vertical Furthermore if the device is developed for the US market and/or Canada market, it shall comply to the FCC and/or IC approval requirements: 5.2. Antenna Connector The CC864-Dual module is equipped with a 50 Ohm RF connector from Murata, GSC type and P/N MM9329-2700RA1. The counterpart suitable is Murata MXTK92 type or MXTK88 type. 5.3. Antenna installation Guidelines Install the antenna in a place covered by the CDMA signal Antenna shall not be installed inside metal cases Antenna shall be installed also according Antenna manufacturer instructions
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 16 of 39 6. PINs allocation The CC864-DUAL uses an 80 pin Molex p.n 53949-0878 male connector for the connections with the external applications. This connector matches the 54150-0878 model. Pin Signal I/O Function Internal Pull up Type Power Supply 1 VBATT - Main power supply Power 2 VBATT - Main power supply Power 3 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 I Handsfree switching 100kΩ CMOS 2.8V9 EAR_HF+ AO Handsfree ear output, phase+ Audio 10 EAR_HF- AO Handsfree ear output, phase- Audio 11 EAR_MT+ AO Handset earphone signal output, phase+ Audio 12 EAR_MT- AO Handset earphone signal output, phase- Audio 13 MIC_HF+ AI Handsfree microphone input ; phase+, nominal level 3mVrms Audio 14 MIC_HF- AI Handsfree microphone input ; phase-, nominal level 3mVrms Audio 15 MIC_MT+ AI Handset microphone signal input ; phase+, nominal level 50mVrms Audio 16 MIC_MT- AI Handset microphone signal input ; phase-, nominal level 50mVrms Audio R-UIM Card Interface 18 UIM_PWR - Power supply for the UIM 2.8V
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 17 of 39 19 UIM_RST O Reset 2.8V 20 UIM_DATA I/O Data I/O 2.8V 21 UIM_IN I Presence(active low) 47kΩ 2.8V 22 UIM_CLK O Clock 2.8V QCOM Diagnostic Monitor 23 RX_TRACE I RX Data for debug monitor CMOS 2.8V24 TX_TRACE O TX Data for debug monitor CMOS 2.8VProg. / Data + Hw Flow Control 25 C103/TXD I Serial data input (TXD) from DTE CMOS 2.8V26 C104/RXD O Serial data output to DTE CMOS 2.8V27 C107/DSR O Output for Data set ready signal (DSR) to DTE CMOS 2.8V28 C106/CTS O Output for Clear to send signal (CTS) to DTE CMOS 2.8V29 C108/DTR I Input for Data terminal ready signal (DTR) from DTE CMOS 2.8V30 C125/RING O Output for Ring indicator signal (RI) to DTE CMOS 2.8V31 C105/RTS I Input for Request to send signal (RTS) from DTE CMOS 2.8V32 C109/DCD O Output for Data carrier detect signal (DCD) to DTE CMOS 2.8VIIC 33 SCL I/O IIC Hardware interface CMOS 2.8V34 SDA I/O IIC Hardware interface CMOS 2.8VUSB 35 USB_ID I USB_ID input 47kΩ CMOS 2.8V48 USB_VBUS AI/AO USB_VBUS power supply 5V 79 USB_D+ I/O USB Data(USB Internal Transceiver In/Output) 2.8V~3.6V80 USB_D- I/O USB Data(USB Internal Transceiver In/Output) 2.8V~3.6VDAC and ADC 37 ADC_IN1 AI Analog/Digital converter input A/D 38 ADC_IN2 AI Analog/Digital converter input A/D 39 ADC_IN3 AI Analog/Digital converter input A/D 40 DAC_OUT AO Digital/Analog converter output D/A(PWM)PCM 36 PCM_CLOCK I/O Telit GPIO Configurable GPIO CMOS 2.8V
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 18 of 39 63 TGPIO_10/PCM_TX I/O Telit GPIO10 Configurable GPIO CMOS 2.8V65 TGPIO_18/PCM_RX I/O Telit GPIO18 Configurable GPIO CMOS 2.8V71 TGPIO_17/PCM_SYNC I/O Telit GPIO17 Configurable GPIO CMOS 2.8VMiscellaneous Functions 45 STAT_LED O Status indicator led CMOS 1.8V46 GND - Ground Ground 49 PWRMON O Power ON Monitor CMOS 2.8V50 VAUX1 - Power output for external accessories (AT command driven) 2.85V/ 150mA 51 CHARGE AI Charger input Li-Ion Power 52 CHARGE AI Charger input Li-Ion Power 53 ON/OFF* I Input command for switching power ON or OFF (toggle command). The pulse to be sent to the CC864-DUAL must be equal or greater than 1 second. 47kΩ Pull up to VBTT 54 RESET* I Reset input 55 VRTC Power Telit GPIO 56 TGPIO_19 I/O Telit GPIO19 Configurable GPIO CMOS 2.8V57 TGPIO_11/VIBRATOR I/O Telit GPIO11 Configurable GPIO/Vibrator CMOS 2.8V58 TGPIO_20 I/O Telit GPIO20 Configurable GPIO CMOS 2.8V59 TGPIO_04/CONVERSATION I/O Telit GPIO4 Configurable GPIO/Conversation CMOS 2.8V60 TGPIO_14 I/O Telit GPIO14 Configurable GPIO CMOS 2.8V61 TGPIO_15 I/O Telit GPIO15 Configurable GPIO CMOS 2.8V62 TGPIO_12/AUDIO CALL BUTTON I/O Telit GPIO12 Configurable GPIO/Audio Call Button CMOS 2.8V64 TGPIO_22 I/O Telit GPIO22 Configurable GPIO CMOS 1.8V66 TGPIO_03/AUDIO MUTE I/O Telit GPIO03 Configurable GPIO/Audio Mute CMOS 2.8V
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 19 of 39 67 TGPIO_08/POWER_SAVING I/O Telit GPIO08 Configurable GPIO/Power saving mode CMOS 2.8V68 TGPIO_06/ALARM I/O Telit GPIO06 Configurable GPIO/Power wakeup CMOS 2.8V70 TGPIO_01 I/O Telit GPIO01 Configurable GPIO CMOS 2.8V72 TGPIO_21 I/O Telit GPIO21 Configurable GPIO CMOS 2.8V73 TGPIO_07/BUZZER I/O Telit GPIO07 Configurable GPIO/Buzzer CMOS 2.8V(PWM)74 TGPIO_02 I/O Telit GPIO02 Configurable GPIO CMOS 2.8V75 TGPIO_16 I/O Telit GPIO16 Configurable GPIO CMOS 2.8V76 TGPIO_09 I/O Telit GPIO09 Configurable GPIO CMOS 2.8V77 TGPIO_13/ACTIVE I/O Telit GPIO13 Configurable GPIO/ACTIVE pin to protect current leakage CMOS 2.8V78 TGPIO_05/RFTXMON I/O Telit GPIO05 Configurable GPIO/Transmitter ON monitor CMOS 2.8VReserved 17 41 42 43 44 47 48 69 79 80
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 20 of 39 7. Interface Description This chapter covers information required to convert the CC864-Dual into a subscriber unit application. And this chapter include : y UART1 : RS232 level translation for AT command y R-UIM card holder y USB y IIC BUS Interface y ADC/DAC signals y General Purpose I/O 7.1. UART1(RS232 level translation) The serial port on the CC864-DUAL is the core of the interface between the module and Host hardware. Depending from the type of serial port on the Host hardware, a level translator circuit may be needed to make the system work. The only configuration that doesn’t need a level translation is the 2.8V UART. There are two UART port on the CC864-Dual. It differs from the PC RS232 in the signal polarity(RS232 is reversed) and levels. The levels for the CC864-Dual UART are the CMOS levels: Absolute maximum ratings – Not functional Parameter Min Max Input level on any digital pin when on -0.3V +3.75V Input voltage on analog pins when on -0.3V +3.0V Operating Range – Interface levels(2.8V CMOS) Level Min Max Input high level VIH 1.85V 3.15V
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 21 of 39 Input low level VIL -0.3V 0.9V Output high level VOH 2.4V 2.85V Output low level VOL 0.0V 0.45V UART1 is used for interfacing between the CC864-Dual and Host. The CC864-Dual and its host transmit data or AT-command through RS-232 signal line. The signals of the CC864-Dual serial port are: RS232 Pin Nr Signal PIN Number Name Usage 1 DCD-dcd_uart 32 Data Carrier Detect Output from the CC864-Dual that indicates the carrier presence 2 RXD-tx_uart 26 Transmit line Output transmit line of CC864-Dual UART 3 TXD-rx_uart 25 Receive line Input receive of the CC864-Dual UART 4 DTR-dtr_uart 29 Data Terminal Ready Input to the CC864-Dual that control the DTE READY condition 5 GND 5,6,7 Ground Ground 6 DSR-dsr_uart 27 Data Set Ready Output from the CC864-Dual that indicates the module is ready 7 RTS-rts_uart 31 Request to Send Input to the CC864-Dual that controls the Hardware flow control 8 CTS-cts_uart 28 Clear to Send Output from the CC864-Dual that controls the Hardware flow control 9 RI-ri_uart 30 Ring Indicator Output from the CC864-Dual that indicates the incoming call condition In order to interface the CC864-Dual with a PC com port or a RS232(EIA/TIA-232) application a level translator is required. This level translator must invert the electrical signal in both directions change the level from 0/3V to 15/-15V Actually, the RS232 UART 16450, 16550, 16650 & 16750 chipsets accepts signals with lower levels on the RS232 side(EIA/TIA-562), allowing for a lower voltage-multiplying ratio on the level translator. Note that the negative signal voltage must be less than 0V and hence some sort of level translation is always required.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 22 of 39 By convention the driver is the level translator from the 0-3V UART level to the RS232 level, while the receiver is the translator from RS232 level to 0-3V UART. In order to translate the whole set of control lines of the UART you will need: 5 driver and 3 receiver An example of level translation circuitry of this kind is : The RS232 serial port lines are usually connected to a DB9 connector with the following layout :
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 23 of 39 7.1.1. 5V UART level translation If the Host application uses a microcontroller with a serial port(UART) that works at a voltage different from 2.8~3V, then a circuitry has to be provided to adapt the different levels of the two sets of signals. As for the RS232 translation there are a multiple of single chip translators, but since the translation requires very few components, then also a discrete design can be suited. For example a possible inexpensive translator circuit for a 5V driver can be: And for a 5V receiver: 7.2. R-UIM Holder
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 24 of 39 The Removable User Identify Module(R-UIM) is a smart card for CDMA cellular applications. R-UIM provides personal authentication information which allows the mobile station or handset to be connected with the network. The R-UIM card enables handset independence for the user. The R-UIM card can be inserted into any CDMA R-UIM equipped handset, allowing the user to receiver or make calls and receive other subscribed services from any R-UIM equipped handset. 7.2.1. R-UIM Design Guidelines Aim of this section is to give basic design guide lines to integrate a R-UIM holder in applications that uses Pin NO. Signal Name Signal Description Direction 18 VREG_UIM_PWR_2.85V Power supply CC864-Dual → R-UIM19 UIM_RST Reset signal CC864-Dual → R-UIM20 UIM_DATA Serial data CC864-Dual ↔ R-UIM21 UIM_IN NC 22 UIM_CLK Clock CC864-Dual → R-UIM 7.3. USB Port The CC864-Dual includes a universal serial bus(USB) transceiver. This transceiver operates at USB low-speed(1.5Mbits/sec) and USB full-speed(12Mbits/sec). It is complaint with USB 2.0 specification. It can be used for diagnostic monitoring purpose. Pin Number Signal Usage 35 USB_ID Analog input used to sense whether a peripheral device is connected, and determine the peripheral type, a host or a slave 48 USB_VBUSPower supply for the internal USB transceiver. This pin is configured as an analog input or and analog output depending upon the type of peripheral device connected. 79 USB_D+ Plus(+) line of the differential, bi-directional USB signal to/from the
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 25 of 39 peripheral device 80 USB_D- Minus(+) line of the differential, bi-directional USB signal to/from the peripheral device 7.4. IIC Bus Interface I2C is a two-wire bus for inter-IC communication that supports any IC fabrication process(NMOS, CMOS, bipolar, etc). Two wires(or lines), serial data(SDA) and serial clock(SCL), carry information between the connected devices. Each device is recognized by a unique address(whether it’s a microcontroller, memory, LCD driver, stereo DAC, or keyboard interface) and can operate as either a transmitter or receiver, depending on the device function. Pin No Name Description 33 SCL Serial BUS Clock 34 SDA Serial BUS Data 7.5. ADC/DAC signals Analog measurement output or sensor output(Battery voltage, temperature etc) can be connected to ADC pin. Then it change analog value to digital. DAC pin drive out PWM signal and control external component. And you need additional RC filter to change PWM signal to analog signal. Pin No Name Description Direction 37 ADC_IN1 Analog/Digital converter input → CC864-Dual 38 ADC_IN2 Analog/Digital converter input → CC864-Dual 39 ADC_IN3 Analog/Digital converter input → CC864-Dual 40 DAC_OUT Digital/Analog converter input ← CC864-Dual
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 26 of 39 7.6. General Purpose I/O The general purpose I/O pads can be configured to act in three different ways: y input : Input pads can only be read and report the digital value(high or low) present on the pad at the read time y output : output pads can only be written or queried and set the value of the pad output y alternate function(internally controlled) : an alternate function pad is internally controlled by the CC864-Dual firmware and acts depending on the function implemented. Pin Signal I/O Function Type Default state On_OFF state Alternative Function 70 TGPIO_01 I/O Gonfigurable GPIO CMOS2.8V Input Low 74 TGPIO_02 I/O Gonfigurable GPIO CMOS2.8V Input Low JDR 66 TGPIO_03 I/O Gonfigurable GPIO CMOS2.8V Input Low AUDIO MUTE 59 TGPIO_04 I/O Gonfigurable GPIO CMOS2.8V Input Low CONVERSATION 78 TGPIO_05 I/O Gonfigurable GPIO CMOS2.8V Input Low RFTXMON 68 TGPIO_06 I/O Gonfigurable GPIO CMOS2.8V Input ALARM 73 TGPIO_07 I/O Gonfigurable GPIO CMOS2.8V Input Low BUZZER 67 TGPIO_08 I/O Gonfigurable GPIO CMOS2.8V Input Low POWER_SAVING 76 TGPIO_09 I/O Gonfigurable GPIO CMOS2.8V Input Low 63 TGPIO_10 I/O Gonfigurable GPIO CMOS2.8V Input Low PCM_TX 57 TGPIO_11 I/O Gonfigurable GPIO CMOS2.8V Input Low VIBRATOR 62 TGPIO_12 I/O Gonfigurable GPIO CMOS2.8V Input Low CALL_KEY 77 TGPIO_13 I/O Gonfigurable GPIO CMOS2.8V Input Low ACTIVE 60 TGPIO_14 I/O Gonfigurable GPIO CMOS2.8V Input Low 61 TGPIO_15 I/O Gonfigurable GPIO CMOS2.8V Input Low 75 TGPIO_16 I/O Gonfigurable GPIO CMOS2.8V Input Low 71 TGPIO_17 I/O Gonfigurable GPIO CMOS2.8V Input Low PCM_SYNC 65 TGPIO_18 I/O Gonfigurable GPIO CMOS2.8V Input Low PCM_RX 56 TGPIO_19 I/O Gonfigurable GPIO CMOS2.8V Input Low 58 TGPIO_20 I/O Gonfigurable GPIO CMOS2.8V Input Low
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 27 of 39 72 TGPIO_21 I/O Gonfigurable GPIO CMOS2.8V Input Low 64 TGPIO_22 I/O Gonfigurable GPIO CMOS2.8V Input Low 7.6.1. Logic level specifications Where not specifically stated, all the interface circuits work at 2.8V CMOS logic levels. The following tables shows the logic level specifications used in the CC864-Dual interface circuits : Absolute maximum ratings – Not functional Parameter Min Max Input level on any digital pin when on -0.3V +3.75V Input voltage on analog pins when on -0.3V +3.0V Operating Range – Interface levels(2.8V CMOS) Level Min Max Input high level VIH 1.85V 3.15V Input low level VIL -0.3V 0.9V Output high level VOH 2.4V 2.85V Output low level VOL 0.0V 0.45V For 1.8V Operating Range – Interface levels(1.8V CMOS) Level Min Max Input high level 1.6V 2.1V Input low level -0.3V 0.63V Output high level 1.35V 1.8V Output low level 0.0V 0.35V 7.6.2. Using a GPIO pad as Input
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 28 of 39 The GPIO pads, when used as input, can be connected to a digital output of another device and report its status, provided this device has interface levels compatible with the 2.8V CMOS levels of the GPIO 7.6.3. Using a GPIO pad as Output The GPIO pads, when used as outputs, can drive 2.8V CMOS digital devices or compatible hardware. When set as outputs, the pads have a push-pull output and therefore the pull-up resistor may be omitted. 7.6.4. TGPIO_03/AUDIOMUTE This pin can be used to mute audio. It is always desirable to have a mute control on the amplifier, in order to turn it off while the device is not sending signal to the output, in this matter the amplifier background noise which may be audible during idle condition is cut off. 7.6.5. TGPIO_04/CONVERSATION This signal can be used as the audio amplifier enable control signal when the modem uses the audio amplifier on its receiver speaker output layer. It will reduce current consumption because it can activate the amplifier only when there is voice data. 7.6.6. TGPIO_05/RFTXMON This pin will be changed to High state when CC864-DUAL is transmitting state.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 29 of 39 7.6.7. TGPIO_06/ALARM This pin, when configured as Alarm Output, is controlled by the CC864-Dual module and will rise when the alarm starts and fall after the issue of a dedicated AT command. This output can be used to power up the CC864-Dual controlling microcontroller or application at the alarm time, giving you the possibility to program a timely system wake-up to achieve some periodic actions and completely turn off either the application and the CC864-Dual during sleep periods, dramatically reducing the sleep consumption to few ㎂. In battery powered devices this feature will greatly improve the autonomy of the device. 7.6.8. TGPIO_07/BUZZER This pin, when configured as Buzzer Output, is controlled by the CC864-Dual module and will drive with appropriate square waves a Buzzer driver. This permits to your application to easily implement Buzzer feature with ringing tones or melody played at the call incoming, tone playing on SMS incoming or simply playing a tone or melody when needed by your application. The example is : 7.6.9. TGPIO_08/POWER_SAVING The Host gives this signal to the CC864-Dual, it makes the CC864-Dual turn to be power saving
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 30 of 39 mode. This signal is Low enable. When the CC864-Dual enters into power saving mode, every active items include UART port will be off. So current consumption is considerably reduced. And the CC864-Dual monitors the TXD line state of UART1. If the state will be changed Low state, the CC864-Dual will turn to be power saving mode automatically. The application developer must keep in mind that this signal and TXD line state of UART1 perform same function. So if one of the both becomes Low state , the CC864-Dual will turn to be power saving mode. 7.6.10. TGPIO_11/VIBRATOR When configured as VIBRATOR output, this pin is controlled by the CC864-Dual module and will drive with appropriate square waves. Refer the Buzzer circuitry. 7.6.11. TGPIO_12/CALL_KEY When Earjack is inserted, this pin is used to connect outgoing call or response incoming call. 7.6.12. TGPIO_13/ACTIVE This signal is used as an enable signal to control the buffer between CC864-Dual and the host. When reset procedure and boot sequence are done successfully, CC864-Dual drives ACTIVE signal to be High state. And its output is Low state when CC864-Dual is power off. So a pull-down resistor is needed to be clear its state. Most of the signals(except ON/OFF, RESET, STAT_LED) between CC864-Dual and host must use a buffer. It prevents leakage currents flow from Host that is power-on stated to CC864-Dual that is power-off stated. Leakage current could cause CC864-Dual to reset failure.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 31 of 39 8. Audio Section The CC864-DUAL module provides two different audio blocks; both in transmit(Uplink) and in receive(Downlink) direction: “MT lines” should be used for handset function, “HF lines” is suited for hands-free function or earphone function. These two blocks can be active only one at a time, selected by AXE hardware line or by AT command. The audio characteristics are equivalent in transmit blocks, but are different in the receive ones and this should be kept in mind when designing. 8.1. Differential Audio Interface design You can use the MIC_MT+, MIC_MT-, EAR_MT+, EAR_MT-. 8.1.1. General Design Rules
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 32 of 39 There are several configuration for the audio paths, but the most difference is between balanced and unbalanced microphone configuration. It is highly recommended to keep the whole microphone path balanced even if this means having 2wires connecting the microphone instead of one needed in the unbalanced case. The balanced circuitry is more suited because of its good common mode noise rejection. Keep the microphone traces on the PCB and wires as short as possible. If your application requires an unbalanced microphone, then keep the lines on the PCB balanced and “unbalance” the path close to the microphone wire connector if possible. Make sure that the microphone traces in the PCB don’t cross or run parallel to noisy traces(especially the power line). If possible put all around to the microphone lines a ground trace connected to the ground plane by several vias. This is done in order to simulate a shielded trace on the PCB. The CC864-DUAL provides two audio paths in receive section. Only one of the paths can be active at a time, selectable by AXE hardware line or by AT command. 8.1.2. Microphone design You need an additional external bias circuitry. The example is : 8.2. Receiver design The EAR_MT+, EAR_MT- are the differential line-out drivers. You can drive directly a 16Ω earpiece
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 33 of 39 and don’t need an external audio amplifier circuitry. This solution is often the most cost effective, reducing the components count to a minimum. The example is : 8.3. Speaker design The EAR_MT+, EAR_MT- are the differential line-out drivers. You can drive a 8Ω speaker with an external audio amplifier. This solution is can be used when high audio power is needed. The example is : 8.4. Single-ended Audio Interface design (Hand-free or earphone design) You can use the MIC_HF+, MIC_HF-, EAR_HF+, EAR_HF-. Additional MIC_HF+ bias circuitry, AUDIO_AUX circuitry, AUDIO_CALL_BUTTON circuitry are needed. AUDIO_AUX will be used to notify if earphone is inserted or not. AUDIO_CALL_BUTTON will be used to send outgoing call or to receive incoming call. The example is :
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 34 of 39 8.5. Car kit speakerphone design If you want to design carkit speakerphone with PCM signals, you must need an external codec and an external audio amplifier. When PCM signals connected, the default state of PCM_RX signal is high state. CC864-DUAL monitor this signal and change audio path to PCM signals. 8.6. PCM Interface The CC864-Dual PCM interface can be used in two modes : 1) auxiliary PCM(the default) running at 128kHz; or 2) primary PCM running at 2.048Mhz. The auxiliary PCM interface enables communication with an external CODEC to support hands-
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 35 of 39 free application. Linear, μ-law, and A-law CODECs are supported by the auxiliary PCM interface. The auxiliary CODEC port operates with standard long-sync timing and a 128kHz clock. Most μ-law and A-law CODECs are support the 128kHz AUX_PCM_CLK bit clock. The auxiliary CODEC port also supports 2.048Mhz PCM data and sync timing for linear, μ-law, and A-law CODECs that match the sync timing – this is called the primary PCM interface(or just PCM interface). PCM interface can be configured and controlled by either direct register access through the CODEC_CTL register, or by the aDSP CODEC configuration command. Using the CODEC configuration command is the preferred method. Pin Number Name I/O Description Level 36 PCM_CLOCK I/O PCM_CLOCK CMOS 2.8V63 TGPIO_10/PCM_TX I/O TGPIO10 Configurable GPIO/PCM_TX CMOS 2.8V65 TGPIO_18/PCM_RX I/O TGPIO18 Configurable GPIO/PCM_RX CMOS 2.8V71 TGPIO_17/PCM_SYNC I/O TGPIO17 Configurable GPIO/PCM_SYNC CMOS 2.8V 9. Miscellaneous signals 9.1. VAUX1 A regulated power supply output is provided in order to supply small devices from module. This output is active when the module is ON and goes off when module is shut down. The operating range characteristics of the supply are: Operating Range – Vout power supply Parameters Min Typ Max Output voltage 2.75V 2.85V 2.95V Output current 100mA
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 36 of 39 Output bypass capacitor 2.2uF Care must be taken to avoid latch-up on the CC864-Dual and the use of this output line to power electronic devices shall be considered with care, especially for devices that generate spikes and noise such as level translators, digital ICs or microcontroller, failure in any of these condition can severely compromise the CC864-Dual functionality. 9.2. VRTC This pin is used to supply power to RTC(Real Time Clock) Module when CC864-Dual is off state. RTC module can power up CC864-Dual at alarm time. Refer the “TGPIO_06/ALARM” part. Connect Super capacitor at this pin. Super capacitor is charged when CC864-Dual is on and it supply power to the RTC Module when CC864-Dual is off. 9.3. STAT_LED This pin is a open collector output signal. It can be synchronized by Slot Cycle Index to make the LED blinking. Turn On time is 50ms. If the modem is in no service area, the modem turns off the LED. The LED is blinking in idle mode, and keeps Turn On in traffic mode.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 37 of 39 9.4. PWRMON Its function is similar to ACTIVE. If the reset procedure or boot sequence is finished successfully, PWRMON will be changed to High state. 9.5. AUDIO_AUX This pin can be used for Handfree(earphone detection) switching. If the earphone is inserted to the earjack connector, CC864-Dual will change the audio path to MIC_HF± and EAR_HF± from MIC_MT± and EAR_MT±.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 38 of 39 10. Safety Recommendations READ CAREFULLY Be sure the use of this product is allowed in the country and in the environment required. The use of this product may be dangerous and has to be avoided in the following areas : Where it can interface with other electronic devices in environments such as hospitals, airports, air crafts, etc Where there is risk of explosion such as gasoline, oil refineries, etc It is responsibility of the user to enforce the country regulation and the specific environment regulation. Do not disassemble the product; any mark of tampering will compromise the warranty validity. We recommend following the instructions of the hardware user guides for a correct wiring of the product. The product has to be supplied with a stabilized voltage source and the wiring has to be conforming to the security and fire prevention regulations. The product has to be handled with care, avoiding any contact with the pins because electrostatic discharges may damage the product itself. Same cautions have to be taken for the R-UIM card, checking carefully the instruction for its use. Do not insert or remove the R-UIM when the product is in power saving mode. The system integrator is responsible of the functioning of the final product; therefore, care has to be taken to the external components of the module, as well as of any project or installation issue. Should there be any doubt, please refer to the technical documentation and the regulation in force. Every module has to be equipped with a proper antenna with specific characteristics. The antenna has to be installed with care in order to avoid any interface with other electronic devices and has to quarantine a minimum distance from the body(20Cm). In case of this requirement cannot be satisfied, the system integrator has to assess the final product against the SAR regulation.
Telit CC864-Dual Hardware user manual 80pppSTzzzzza Rev. 0 , 12-Nov-07 Reproduction forbidden without Telit wireless Solutions – All Right reserved Page 39 of 39 11. Reference y QSC6055TM, QSC6065TM, QSC6075TM and QSC6085TM Single ChipTM Device Specification 80-VC881-1 y QSC6055TM, QSC6065TM, QSC6075TM and QSC6085TM Qualcomm Single ChipTM User Guide 80-VC881-3 12. Document Change Log Revision Date Changes Draft #0 12-Nov-07 Draft
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.

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