Daewoo DTR-14D9ME Service Manual

Also see for DTR-1420ME: Service manual

Contents

Daewoo DTR-14D9ME Service Manual Manual pdf 27 page image

-26-9. IC DESCRIPTION VCT 38xxA/B1. IntroductionThe VCT 38xxA/B is an IC family of high-quality single-chip TV processors. Modular design and a submicrontechnology allow the economic integration of featuresin all classes of TV sets. The VCT 38xxA/B family isbased on functional blocks contained and approved inexisting products like VDP 3120B, TPU 3050S, andCCZ 3005K.Each member of the family contains the entirevideo,display, and deflection processing for 4:3 and16:9 50/ 60-Hz TV sets. The integrated microcontrolleris sup-ported by a powerful OSD generator withintegrated teletext acquisition which can be upgradedwith on-chip page memory. With volume control andaudio input select the basic audio features for mono TVsets are integrated. An overview of the VCT 38xxA/Bsin-gle-chip TV processor family is given in Fig. 1–1 onpage 7.The VCT 38xxA/B family offers a rich feature set, cov-ering the whole range of state-of-the-art 50/60-Hz TVapplications.In comparison to the VCT 38xxA the VCT 38xxB offersthe following features:– one additional composite video input– analog luma/chroma adder for video output– closed caption module– additional 12k character ROMVINVRTSGNDVSUPAFGNDAFVSUPDGNDDVERTEWPROTHOUTHFLBSENSERSWGNDMVRDXREFVideoFront-end CombFilter ColorDecoder PanoramaScalerDisplayProcessorPict. ImprovVideoBack-endAudioCINVOUT42 2 2342233RGBOUTSVMRGBINVSUPABGNDABAOUTAINI 2 CI2 C MasterI 2 CMSyncColor, PrioVSync8-bit PWM14-bit PWM15:1 Mux10-bit ACD2 Timer2 CapCom96 kBCPU ROMADB, DB, CB16 kBTextRAM3 kBOSD RAMTPUVideo24 kB ROM31121 kBCPU RAMCPUDMA8BERDYWatchdog24 IO PortsRESQTESTXTAL1XTAL2CLK20CNDP1VSUPP1PxyGNDSVSUPSClockOscillatorResetLogicVCT 38xxA/B2. Chip Architecture