MP3芯片AT89C51SND2C(1)

Rev.4341E–MP3–06/05Features•MPEGI/II-Layer3HardwiredDecoder–Stand-aloneMP3Decoder–48,44.1,32,24,22.05,16kHzSamplingFrequency–SeparatedDigitalVolumeControlonLeftandRightChannels(SoftwareControlusing31Steps)–Bass,Medium,andTrebleControl(31Steps)–BassBoostSoundEffect–AncillaryDataExtraction–CRCErrorandMPEGFrameSynchronizationIndicators•20-bitStereoAudioDAC–93dBSNRplaybackstereochannel–32Ohm/20mWstereoheadsetdrivers–StereoLineLevelInput,DifferentialMonoAuxiliaryInput•ProgrammableAudioOutputforInterfacingwithExternalAudioSystem–PCMFormatCompatible–I2SFormatCompatible•MonoAudioPowerAmplifier–440mWon8OhmsLoad•8-bitMCUC51CoreBased(FMAX=20MHz)•2304BytesofInternalRAM•64KBytesofCodeMemory–AT89C51SND2C:Flash(100KErase/WriteCycles)–AT83SND2C:ROM•4KBytesofBootFlashMemory(AT89C51SND2C)–ISP:DownloadfromUSB(standard)orUART(option)•USBRev1.1Controller–FullSpeedDataTransmission•Built-inPLL–MP3AudioClocks–USBClock•MultiMediaCard®InterfaceCompatibility•AtmelDataFlash®SPIInterfaceCompatibility•IDE/ATAPIInterface•Upto32BitsofGeneral-purposeI/Os–1InterruptKeyboard–SmartMedia®SoftwareInterface•2Standard16-bitTimers/Counters•HardwareWatchdogTimer•StandardFullDuplexUARTwithBaudRateGenerator•TwoWireMasterandSlaveModesController•SPIMasterandSlaveModesController•PowerManagement–Power-onReset–SoftwareProgrammableMCUClock–IdleMode,Power-downMode•OperatingConditions:–2.7to3.6V–37mATypicalOperatingat25°Cplayingmusiconearphone–TemperatureRange:-40°Cto+85°C–Poweramplifiersupply3.2Vto5.5V•Packages–CTBGA100Single-ChipFlashMicrocontrollerwithMP3DecoderwithFullAudioInterfaceAT83SND2CAT89C51SND2CPreliminary2AT8xC51SND2C4341E–MP3–06/05DescriptionTheAT8xC51SND2ChasbeendevelopedforhandlingMP3ringingtonesinmobilephonesandcanreplacesoundgeneratorswhileaddingSD/MMCcardreader,MP3musicdecoding,andconnectionofthecellphonetoaPCthroughUSB.Cellphonescanalsobeusedasathumbdriveextendingcellphonecapabilities.TheAT8xC51SND2Carefullyintegratedstand-alonehardwiredMPEGI/II-Layer3decoderwithaC51microcontrollercorehandlingdataflow,MP3-playercontrol,StereoAudioDACandMonoAudioPowerAmplifierforspeakercontrol.TheAT89C51SND2Cincludes64KBytesofFlashmemoryandallowsIn-SystemPro-grammingthroughanembedded4KBytesofBootFlashmemory.TheAT83SND2Cincludes64KBytesofROMmemory.TheAT8xC51SND2Cinclude2304BytesofRAMmemory.TheAT8xC51SND2Cprovidesthenecessaryfeaturesforhumaninterfaceliketimers,keyboardport,serialorparallelinterface(USB,TWI,SPI,IDE),I2Soutput,andallexter-nalmemoryinterface(NANDorNORFlash,SmartMedia,MultiMedia,DataFlashcards).TypicalApplications•MP3-Player•PDA,Camera,MobilePhoneMP3•CarAudio/MultimediaMP3•HomeAudio/MultimediaMP33AT8xC51SND2C4341E–MP3–06/05BlockDiagramFigure1.AT8xC51SND2CBlockDiagram8-BitInternalBusClockandPLLUnitC51(X2Core)FlashROMInterruptHandlerUnitFILTX2X1MP3TWIControllerMMCInterfaceI/OPortsSCLSDAMDATP0-P4VSSVDDKeyboardInterfaceKIN0I2S/PCMAudioINT0INT1MOSIMISO3AlternatefunctionofPort34AlternatefunctionofPort4Timers0/1T1T0SPI/DataFlashControllerMCLKMCMDSCKRSTDSELDCLKSCLKDOUT64KBytesUSBControllerD+D-UARTRXDTXDIDEInterfaceSSWatchdogFlashBoot4KBytesISPUVSSUVDDandBRGALE333334444AudioDecoderInterfacePAAudioDACUnitHSRHSLAUXPRAM2304Bytes3AUXNLINELLINERMONOPMONONPAINPPAINNHPPHPN4AT8xC51SND2C4341E–MP3–06/05PinDescriptionPinoutsFigure2.AT8xC51SND2C100-pinBGAPackageNotes:1.ISPpinisonlyavailableinAT89C51SND2Cproduct.DonotconnectthispinonAT83SND2Cproduct.2.NCisDoNotConnectAUXN89765432CBADEFGH1ALENCAUDVDDHSVDDHSVSSAUDVSSAUDVCMNCHSLHSRPVSSINGNDD+P0.0/NCPVDDLINELX2D-NCP0.3/NCAUDVREFFILTLINERX1VSSVSSMONONP0.4/P0.5/VSSP3.0/TSTP3.6/VDDP4.2/P0.6/P0.7/VDDP3.1/P3.4/P3.5/P3.7/P4.1/P4.0/P4.3/NCESDVSSP3.2/DSELDCLKLPHNP2.0/P2.1/P2.5/MCLKVDDNCSCLKDOUTCBPNCP2.2/P2.3/P2.7/VSSMDATAUDRSTVSSAUDVSSJP0.2/P0.1/NCAUXPMONOPAD7SSWRNCVDDP2.4/P2.6/EAMCMDRSTNCVDDUVSSUVDDVDDP3.3/AUDVSSHPNAUDVBATHPPPAINNPAINPMOSISCKMISOKA8KIN0AD0AD4AD3AD2AD1SCLSDAAD5A9A10A11A12A13A14A15T0T1TXDRXDRDINT1INT0ISP/10AD6NC5AT8xC51SND2C4341E–MP3–06/05SignalsAlltheAT8xC51SND2CsignalsaredetailedbyfunctionalityinTable1toTable14.Table1.PortsSignalDescriptionTable2.ClockSignalDescriptionTable3.Timer0andTimer1SignalDescriptionSignalNameTypeDescriptionAlternateFunctionP0.7:0I/OPort0P0isan8-bitopen-drainbidirectionalI/Oport.Port0pinsthathave1swrittentothemfloatandcanbeusedashighimpedanceinputs.Toavoidanyparasiticcurrentconsumption,floatingP0inputsmustbepolarizedtoVDDorVSS.AD7:0P2.7:0I/OPort2P2isan8-bitbidirectionalI/Oportwithinternalpull-ups.A15:8P3.7:0I/OPort3P3isan8-bitbidirectionalI/Oportwithinternalpull-ups.RXDTXDINT0INT1T0T1WRRDP4.3:0I/OPort4P4isan8-bitbidirectionalI/Oportwithinternalpull-ups.MISOMOSISCKSSSignalNameTypeDescriptionAlternateFunctionX1IInputtotheon-chipinvertingoscillatoramplifierTousetheinternaloscillator,acrystal/resonatorcircuitisconnectedtothispin.Ifanexternaloscillatorisused,itsoutputisconnectedtothispin.X1istheclocksourceforinternaltiming.-X2OOutputoftheon-chipinvertingoscillatoramplifierTousetheinternaloscillator,acrystal/resonatorcircuitisconnectedtothispin.Ifanexternaloscillatorisused,leaveX2unconnected.-