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Lecture 9: Digital Signal Processors: Applications and ...

1 Kurt KeutzerLecture 9: Digital Signal Processors: Applications and ArchitecturesPrepared by: Professor Kurt KeutzerComputer Science 252, Spring 2000 With contributions from:Dr. Jeff Bier, BDTI; Dr. Brock Barton, TI; Prof. Bob Brodersen, Prof. David Patterson 2 Kurt KeutzerProcessor ApplicationsGeneral Purpose - high performance Pentiums, Alpha s, SPARC Used for general purpose software Heavy weight OS - UNIX, NT Workstations, PC sEmbedded processors and processor cores ARM, 486SX, hitachi SH7000, NEC V800 Single program Lightweight, often realtime OS DSP support Cellular phones, consumer electronics ( CD players) Microcontrollers Extremely cost sensitive Small word size - 8 bit common Highest volume processors by far Automobiles, toasters, thermostats, .. IncreasingCostIncreasingvolume3 Kurt KeutzerProcessor Markets$30B$ $ $10B/33%8-bitmicro16-bitmicroDSP32-bitmi cro$ $ bit DSP4 Kurt KeutzerThe Processor Design SpaceCostPerformanceMicroprocessorsPerfo rmance iseverything& Software rulesEmbeddedprocessorsMicrocontrollersC ost is everythingApplication specific architecturesfor performance5 Kurt KeutzerMarket for DSP ProductsMixed/SignalAnalogDSPDSP is the fastest growing segment of the semiconductor market6 Kurt KeutzerDSP ApplicationsAudio Applications MPEG Audio Portable audioDigital camerasWireless Cellular telephones Base stationNetworking Cable modems ADSL VDSL7 Kurt KeutzerAnother Look at DSP ApplicationsHigh-end Wireless Base Sta

2 Kurt Keutzer Processor Applications General Purpose - high performance Pentiums, Alpha’s, SPARC Used for general purpose software Heavy weight OS - UNIX, NT Workstations, PC’s Embedded processors and processor cores ARM, 486SX, Hitachi SH7000, NEC V800 Single program Lightweight, often realtime OS DSP support Cellular phones, consumer electronics …

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