Power Up

Pressing the power key, that generates a PWRONX interrupt signal from the power key to the CCONT, which starts the power up procedure. 2. Connecting a charger to the phone. The CCONT recognizes the charger from the VCHAR voltage and starts the power up procedure. 3. A RTC interrupt. If the real time clock is set to alarm and the phone is switched off, the RTC generates an interrupt signal, when the alarm is gone off. The RTC interrupt signal is connected to the PWRONX line to give a power on...

Battery Identification

Chicago Batteries

Different battery types are identified by a pulldown resistor inside the battery pack. The BSI line inside transceiver has a 100k pullup to VBB. The MCU can identify the battery by reading the BSI line DC-voltage level with a CCONT (N100) A D-converter. The battery identification line is used also for battery removal detection. The BSI line is connected to a SIMCardDetX line of MAD2 (D200). SIMCardDetX is a threshold detector with a nominal input switching level 0.85xVcc for a rising edge and...

Startup Charging

When a charger is connected, the CHAPS is supplying a startup current minimum of 130mA to the phone. The startup current provides initial charging to a phone with an empty battery. Startup circuit charges the battery until the battery voltage level is reaches 3.0V (+ - 0.1V) and the CCONT releases the PURX reset signal and program execution starts. Charging mode is changed from startup charging to PWM charging that is controlled by the MCU software. If the battery voltage reaches 3.55V (3.75V...

Light

R0LLEE_C lt Q COBBARESET lt Z BAND_SEL lt 1 IRON MAD2PR1-F721558-1 lt MGGU RowO Rou1 Row2 Row3 Roirf Row5LCDCD HeadDet HookDet LoByteSelX GenSDIO GenSClk CLk32k -GenCCONTCSX PURX SIMCardPwr CCONTInt SIMCardlQC _SIMCardDatSIMCardClk -SIMCardRstX DSPXF PCMDClk VibraPUM PCMSClk VCXOPur MCUGenl00 DSPGen0ut2 MCUGenl01 DSPGen0ut3 MCUGenl02 DSPGenOuM MCUGenl03 DSPGen0ut5 MCUGenl01 EEPROMSelX R0M2SelX MCUGenlODaG MCUGenlODal RFC Ik MCUGenI0Da2 MCUGenI0Da3ESysReset X MCUGenlODal PCMTxData MCUGenI0Da5...

Technical Summary

The baseband architecture is basically similar to DCT3 GSM phones. DCT3.5 differs from DCT3 in the single pcb koncept and the seriel interface between MAD2PR1 and COBBA_GJP and MAD2PR1 and CCONT. In DCT3.5 the MCU, the system specific ASIC and the DSP are intergrated into one ASIC, called the MAD2PR1 chip, which takes care of all the signal processing and operation controlling tasks of the phone. The baseband architecture supports a power saving function called sleep mode. This sleep mode shuts...

Infrared Transceiver Module

An infrared transceiver module is designed as a substitute for hardwired connections between the phone and a PC. The infrared transceiver module is a stand alone component. In DCT3 the module is located inside and at the top of the phone. The Rx and Tx is connected to the FBUS via a dual bus buffer. The module and buffer is activated from the MAD2_pr1 with a pull up on IRON. The Accif in MAD2_pr1 performs pulse encoding and shaping for transmitted data pulses and detection and decoding for...

MCU Memory

MAD2PR1 supports maximum of 4GB internal and 4MB external address space. External memories use address lines MCUAdO to MCUAd21 and 8-bit 16-bit databus. The BUSC bus controller supports 8- and 16-bit access for byte, double byte, word and double word data. Access wait states 0, 1 or 2 and used databus width can be selected separately for each memory block. ROM2sel is in flexpool in MAD2PR1 144pin ext. EE-PROM is in flex pool in MAD2PR1 After reset and when BootROMDis and ROM2Boot are low. MCU...

Digital Control MADPR

The baseband functions are controlled by the MAD2PR1 asic, which consists of a MCU, a system ASIC and a DSP. The GSM PCN specific asic is named as MAD2. There are separate controller asics in TDMA and JDC named as MAD1 and MAD3. All the MAD2PR1 asics contain the same core processors and similar building blocks, but differ from each other in system specific functions, pinout and package types. MAD2PR1 contains following building blocks - ARM RISC processor with both 16-bit instruction set THUMB...

Wire PCM Serial Interface

The interface consists of following signals a PCM codec master clock PCMDClk , a frame synchronization signal to DSP PCMSClk , a codec transmit data line PCMTX and a codec receive data line PCMRX . The COBBA-GJP generates the PCMDClk clock, which is supplied to DSP SIO. The COBBA-GJP also generates the PCMSClk signal to DSP by dividing the PCMDClk. The PCMDClk frequency is 1.000 MHz and is generated by dividing the RFIClk 13 MHz by 13. The COBBA-GJP further divides the PCMDClk by 125 to get a...

Power Distribution

In normal operation the baseband is powered from the phone's battery. The battery consists of one Lithium-Ion cell. There is also a possibility to use batteries consisting of three Nickel Metal Hydride cells or one Solid state cell. An external charger can be used for recharging the battery and supplying power to the phone. The charger can be either so called fast charger, which can deliver supply current up to 1600 mA or a standard charger that can deliver approx 300 mA. The CCONT provides...

Electrical Specifications

Dsp Programming For Synths For Beginners

935.2 959.8 MHz GSM 1805.2 1879.8 MHz DCS1800 890.2 914.8 MHz GSM 1710.2 1784.8 MHz DCS1800 5 33 dBm 3.2 mW 2 W GSM 0 30 dBm 1 mW 1 W DCS1800 -102 dBm BER lt 2.439 GSM -100 dBm BER lt 2.439 DCS1800 ROW 5 G , Col 4 G , LCDCS, ROLLER A, ROLLER B, ROLLER C VREF VSYN_2 RXC SCLK SDATA SENA 1 TXC TX IN TX IP TXQN TXQP VCP TXP VRX_2 VTX sgnd xear mbus fbus-rx fbus-tx i__gnd fbus-tx fbus-rx mbus xear sgnd xmic _i_gnd- XMIC SGND XEAR MBUS1 FBUS-RX FBUS-TX VRX-1 VRX-2 VSYN-2 VXO VTX VCP VREF VBATT HF...

MADPR pinout

MAD2PR1 pins and their usage are described in the following table. reserved for 32Mbit flash 20 roller seriel bidirectional databus to from CCONT Positive high impedance input for microphone. Negative analog power supply for PCM ADC Third negative high impedance input for microphone. Third positive high impedance input for microphone. Positive analog power supply for PCM ADC Positive analog power supply for PCM DAC Negative analog power supply for PCM DAC Output for phone external audio...