Siemens A55 Repair Documentation

Also see for A52: User guide

V 1.10 Page 18of 45 ICM MP CCQ GRMA52/A55/C55 IFX Company Confidential © Copyright Siemens AG 08/0321 24BusInterfaceUnit Shared MemoryDual Port 512 x 16KeypadInterfaceGSMTDMA TimerTAP ControllerJTAGBoundary ScanCipher UnitA51/52SIM cardInterfaceHigh Speed(F=512, D=8/16)32 kHz13/26/52 MHz / 32 kHz78 MHzDual Port RAM1k x 16OCEMSRAM256k x 8DSP Timer2X-BusPD-BusPROM1k x 16BootBlockconfidentialDSP SerialComm. Interface /DAIRTCExternalBus & PortControllerAFC UnitPulse-Carry Mod.80PowerManagementDSP Timer1ViterbiHWAcceleratorID RegisterSSCSPIcompatibleASC0AutobaudDetectASC162 2MulticoreDebug SupportSEIBCAPCOM2 x 8 bit16RF Control8 163GPT1/GPT2Watchdog8CS(4:0)Interrupt ControllerOsc.32.768 kHz Enable Signals toX- and PD-Bus PeripheralsMCUC166SClock GenerationPeripheral EnableGeneratorSwitch MatrixBattery & TemperatureMeasurementDACR-StringGMSKModulatorVoicebandFiltersRX and TXΣ∆ADC MUXBasebandFilter/Cordic-ProcessorΣ∆ADCΣ∆ADC16 bit I/O Ports E-GOLD+ V3.0 ArchitectureSingle Chip Cellular Baseband ProcessorRF OutputPower Control10 bit DACBandgapreferencevoltageΣ∆DAC12 bit resolutionDACR-StringPackage: P-LFBGA-208READY#NMI#HOLD#HLDA#CLKOUTRSTOUT#62222222238 34 6P ROM60k x 16P RAM4k x 16Y RAM2k x 16X RAM15k x 16X ROM36k x 16Interp./NoiseShaperInterp./NoiseShaperGPRSCipher UnitOAK78 DSPx Interleaving / De-Interleavingx Speech Coding/Decoding(FR, HR, EFR, AMR)x Level Measurementx Channel Coding/Decoding(FR, HR, EFR, AMR)x Equalizationx Encryption / Decryptionx Voice Memo/Voice Dialingx GPRS supportI2C2LM-BusI2S3MMCIV5.454LogicArranger(LPA)OCDS DPECInterrupt Controller5.1.3 EGOLD+Block Diagram EGOLD+ V3.1The EGOLD+ contains a 16-bit micro-controller (μC part), a GSM analog Interface (EGAIM), a DSPcomputing core (DSP part) and an interface for application-specific switch-functions.The μC part consists of the following:• Micro-controller• System interfaces for internal and external peripheries• On-chip peripheries and memoryThe Controller Firmware carries out the following functions:• Control of the Man Machine Interface (keypad, LCD, sensing element, control of the illumination,...)• GSM Layer 1,2,3 /GPRS• Control of radio part (synthesizer, AGC, AFC, Transmitter, Receiver...),• Control of base band processing (EGAIM)• Central operating system functions (general functions, chip select logic, HW driver, control of mobilephones and accessories...).