EmbeddedSystemDesign《嵌入式系统设计》课后答案(英文版)(10)

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Thisdevicewillexecuteavarietyofapplications.Sinceweareusingsemi-customtechnology,onceprogramming/connectionaredonethedesignerscannotchangethem.AsituationwherethismayoccuriswhentheGPOisalreadydevelopedandtestedandadesignersdesireanICbutnotthecostandtimeofmakingafull-customIC.

5.ASIP+Semi-Custom

Thisdevicewillexecuteaclassofapplicationswellsinceitwasoptimizedwiththoseapplicationsinmind.Oncetheprogramming/connectionsaredone,changescannotbemade.ThissituationarisesafteranASIPisfullydevelopedandtestedandanICisdesiredbutthetimeandcostoffull-customICisnot.

6.SPP+Semi-Custom

Thisdevicewillexecuteasingleprogram.Onceprogramming/connectionsaredonetheprogramwillnotchange.ThissituationmayoccuroncethefinaldevelopmentandtestingisdoneandanICisdesiredbutthetimeandcostoffull-customICisnot.

7.GPP+Full-Custom

Thisdevicewillexecuteavarietyofprograms.Eachlayerhasbeenoptimizedsothatthedevicewillyieldexcellentperformanceandpowerconsumption.Thisoptionisoneofthemostexpensiveandisdesiredwhentheperformance,size,andpowertradeoffsareofgreaterconcernthencostandtime.Thissituationmayariseafterfinaldevelopmentandtesting.Moreover,alargequantityofICswillbeproducedtherebyreducingtheNREperunit.

8.ASIP+Full-Custom

Thisdevicewillexecuteadomainspecificapplicationwell.Eachlayerhasbeenoptimizedsothedevicewillyieldexcellentperformanceandpowerconsumption.Thisoptionisoneofthemostexpensiveandisdesiredwhentheperformance,size,andpowertradeoffsareofgreaterconcernthencostandtime.Thissituationmayoccurafterfinaldevelopmentandtesting.Moreover,alargequantityofICswillbeproducedtherebyreducingtheNREperunit.

9.SPP+Full-Custom

Thisdevicewillexecuteasingleprogram.Eachlayerhasbeenoptimizedsuchthatthedevicewillyieldexcellentperformanceandpowerconsumption.Thisoptionisoneofthemostexpensiveandisdesiredwhentheperformance,size,andpowertradeoffsareofgreaterconcernthencostandtime.Thissituationmayoccurafterfinaldevelopmentandtesting.Moreover,alargequantityofICswillbeproducedtherebyreducingtheNREperunit.

8EmbeddedSystemDesign

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