Sanyo LCD-32XH8T Service Manual

Sanyo LCD-32XH8T Service Manual Manual pdf 8 page image

-8-IC Block DiagramsPWMGen.PWMGen.ControllogicOSCOver currentprotectionUnderVoltageprotectionPWMGen.PWMGen.39414042444543463 75 64 98 101 2 11 1220181917151416132422232134 3032 3133 2829 2736 35 26 2547483837VDB1OUTA1HBA1HBB1OUTB1VDA1OUTB1OUTA1VDB1VDA1VSA1INB1INB2AVCCGNDMUTELSTBYLPROTVSA2VREFOUTB2VDB2OUTA2HBA2VDA2HBB2OUTB2NCNCVDA2OUTA2VDB2RREFDVDDRLMTCLKGAIN1GAIN2ROSCVSB1TEST1TEST2VSB2INA1INA2NCNCVDGainGain5V Reg.AVCC/2 Overtemperatureprotection10V Reg.IC001 R2A15120FAPTC90517FG Toshiba products specification [Tentative]CONFIDENTIAL2. ConfigurationAll functions required for ISDB-T demodulation and error correction are built into the TC90517.The input signals to be supported are a low IF (intermediate frequency) signal and direct IF signal.Baseband IQ signals can also be input.The output signal is an MPEG-2 transport stream (TS) in serial format. Note that a TS in parallel formatcan be output by setting registers.Fig. 2.1 TC90517FG Block DiagramSynchroni-zation flagTS outputCrystal(reference clock)㩷TunerAGCcontrolI 2CcontrolFilterAGCISI C (unguardedpreecho/postechosuppression) FFTControlAdaptiveinterpolationfilterEqualizationCSI(reliabilitydetection)CVI(CW interferencedetection)AGC control outputTuner I2CClock PLL㩷 ViterbidecodingMemory㩷FrequencydeinterleavingRSdecodingErrordetectionOutputcontrolLayerisolation TMCCdemodulationInterpolationphasecorrectionSynchronizationDemappingCSIprocessingBit deinterleavingByte deinterleaving㩷TS multiplex㩷FFT windowcontrolAGC distortion signalADCADCIF inputor IQ input 㩷SWExternal AGC inputHost I2CEnergydespreadingEnergydespreadingEnergydespreadingDemappingCSIprocessingDemappingCSIprocessingModulation division㩷QuadraturedetectionAFCFrequencyCPE㩷Pilotextraction㩷TimedeinterleavingIC5801 TC90517FGP