NXP公司的AeroFONE單片GSM/GPRS低成本多媒體解決方案PNX4903能以超低成本實現(xiàn)帶彩色屏的音樂手機.這種單芯片解決方案集成了模擬和數(shù)字基帶,RF收發(fā)器,功率管理以及音頻電路.唯一的外接元件是功率放大器和存儲器.完整的雙頻段GSM/GPRS調制解調器可以采用低成本的4層PCB做成,僅需要49個元件.本文介紹了PNX4903的主要性能以及多媒體手機的方框圖.
AeroFONEsingle-chipGSM/GPRSlow-costmultimediasolution
TheNXPAeroFONEPNX4903enablesamusicphonewithcolorscreenintheultra-low-costmarketsegment.Byintegratingtheanaloganddigitalbasebands,RFtransceiver,powermanagement,andaudiocircuitryinasinglemonolithicIC,thePNX4903solutiondeliversthesmallestbillofmaterialsandPCBfootprint,alongwiththelowestmanufacturingandtestcosts.
TheonlyexternalICsneededareapoweramplifierandmemory.Acomplete,dual-bandGSM/GPRSmodemcanberealizedwithjust49externalcomponentsonalow-costfour-layerPCB.Traditionalmulti-chiphandsetdesignsrequirethreetimesthenumberofexternalcomponentsonamorecomplexPCB.
Thehardwarereferencedesignisaccompaniedbyaflexible,pre-integratedandvalidatedsoftwarecomplementthatreducesR&Dexpenseandspeedstime-to-market.
主要特性:
CompleteGSM/GPRSsolutioninasinglemonolithicIC
GSMPhase2+compliant
Lowpower,high-performance0.13-mCMOSprocess
Industry-leadingARM926-EJSMCUcore
High-performanceDSPcore
SAICsupportforincreasednetworkcapacity
IntegratesalltheSRAMforavoice-centricphone
CompletelyintegratedRFtransceiver
Dual-bandRxandTx(850or900/1800or1900)
Proven,industry-leadingAeroIItechnology
Best-in-classperformance
Completepowermanagementunit(PMU)subsystem
Integratedbattery-chargingcircuitry
Integratesallvoltageregulators(LDOsandDC/DC)
Integratedaudiosubsystem
MP3playbackwithsupportforSDcard
40voicepolyphonicMIDI+MP3ringtones
Microphoneamplifierwithtwodifferentialinputs
Twodifferentialaudiooutputamplifiers
HR/FR/EFR/AMRvocoders
Alternate40-kS/saudiomodeforpolyphonicringtones
Speakerphonenoisesuppressionandechocancellation
Optimized,flexiblesystemcontrol
Integrated26-MHzDCXO(onlyneedXTAL)
Integrated32-kHzRTCoscillator(onlyneedXTAL)
Flexiblemodesforoptimizedpowerconsumption
Comprehensivesetofperipheralfunctions
Standardpackage
10x10mmplasticballgridarray(PBGA)
RoHS-compliant
PNX4903方框圖:
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