CH7025-CH7026-Prelim-Full-Datasheet-Rev0[1][1].63

CH7025/CH7026Preliminary201-0000-089Rev.0.63,9/27/20071ChrontelChrontelCH7025/CH7026SDTV/VGAEncoderFeaturesGeneralDescription•TVencodertargetsthehandhelddevicesandotherappropriatedisplaydevicesusedinconsumerproducts.•Supportsmultipleoutputformats,suchasTVformat(NTSCandPAL),analogRGBoutputforVGA.Syncsignalscanbeprovidedinseparateorcompositemanner(programmablecompositesyncgeneration).•Threeon-chip10-bithighspeedDACsprovidingflexibleoutputcapabilities,suchassingle,doubleortripleCVBSoutputs,YPbProutput,RGBoutputandsimultaneousCVBSandS-videooutputs.•16MbitsSDRAMisusedasframebuffer,supportingframerateconversion.•Flexibleupanddownscalingengineisembeddedincludingde-flickeringcapability.•Programmable24-bit/18-bit/16-bit/15-bit/12-bit/8-bitdigitalinputinterfacesupportsvariousRGB(RGB888,RGB666,RGB565andetc),YCbCr(4:4:4YCbCr,ITU656)and2xor3xmultiplexedinput.CPUinterfaceisalsosupported.•Supportsforflexibleinputresolutionupto800x800and1024x650(220x176,320x240,640x480,720x480,720x576,800x480,800x600,480x800and600x800etc.).•Pixelbypixelbrightness,contrast,hueandsaturationadjustmentforeachoutputissupported.(ForRGBoutput,onlybrightnessandcontrastadjustmentissupported).•Pixelbypixelhorizontalpositionadjustmentandlinebylineverticalpositionadjustmentaresupported.•90/180/270degreeimagerotationandverticalorhorizontalflipfunctionsaresupported.•Macrovision7.1.L1forSDTVissupported.(CH7025only).•TV/Monitorconnectiondetectioncapability.DACcanbeswitchedoffbasedondetectionresult.(Driversupportisrequired)•Programmablepowermanagement.•Flexiblepixelclockfrequencyfromgraphicscontrollerissupported(2.3MHz–120MHz).•Flexibleinputclockfromcrystaloroscillatorissupported(2.3MHz–64MHz).•Onlyslavemodesupported.•Offeredin80-pinLQFPand80-pinTFBGApackage.•Fullyprogrammablethroughaserialport.•IOandSPC/SPDvoltagesupportedisfrom1.2Vto3.3V.TheCH7025/CH7026isadevicetargetingathandheldandsimilarsystemswhichacceptsadigitalinputsignal,encodesandtransmitsdatathroughthree10-bitDACs.ThisdeviceisabletoencodevideosignalsandgeneratesynchronizationsignalsforNTSCandPALstandards.AnalogRGBoutputandcompositeSYNCsignalarealsosupported.ThedeviceacceptsdifferentdataformatsincludingRGBandYCbCr(e.g.RGB565,RGB666,RGB888,ITU656likeYCbCr,etc.).Ithason-chip16MbitSDRAMframebufferusedforframerateconversionaswellasframemanipulations.Note:theabovefeaturelistissubjecttochangewithoutnotice.PleasecontactChrontelformoreinformationandcurrentupdate.CHRONTELCH7025/CH7026Preliminary2201-0000-089Rev.0.63,9/27/2007InputdataformatdecoderRGB/YCbCrCPUinterfaceCSBWEBVSYNCDINMUXCSC(YCbCrtoRGB)ScalerSDRAMHUESATBRICONVPHPTVformaterMUXBRICONVPHPDAC1DAC3DAC2R/Y/CVBS/Y_SvideoG/Pb/CVBS/C_SvideoB/Pr/CVBSSerialportSPCSPDPLLXIXOSyncpositionadjustH,V,DECompositesyncgenerationCSYNCVSYNCHSYNCCSC(RGBtoYUV)MUXFigure1:CH7025/CH7026blockdiagramCHRONTELCH7025/CH7026Preliminary201-0000-089Rev.0.63,9/27/20073Tableofcontents1.0Pin-out................................................................................................................................................................51.1PackageDiagram........................................................................................................................................51.1.1The80-PinBGAPackageDiagram.......................................................................................................51.1.2The80-PinLQFPPackageDiagram......................................................................................................61.2PinDescription...........................................................................................................................................72.0FunctionalDescription......................................................................................................................................112.1Modesofoperation...................................................................................................................................112.1.1GraphicsControllertoSDTVEncoder................................................................................................112.1.2ITU-RBT.601/656TVEncoder..........................................................................................................122.1.3AnalogRGBoutput.............................................................................................................................132.2Inputinterface...........................................................................................................................................132.2.1Overview..............................................................................................................................................132.2.2InputClockandDataTimingDiagram................................................................................................132.2.3Inputdatavoltage.................................................................................................................................142.2.4Inputdataformat.................................