| DSP处理器和通用处理器的比较 |
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| 引用本文： | 岳虹,沈立,戴葵,王志英.DSP处理器和通用处理器的比较[J].计算机科学,2005,32(3):166-168. |
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| 作者姓名： | 岳虹 沈立 戴葵 王志英 |
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| 作者单位： | 国防科学技术大学计算机学院,长沙,410073 |
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| 基金项目： | 自然科学基金支持(60173040) |
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| 摘 要： | 随着嵌入式系统的广泛应用，其应用程序的功能变得越来越强大和复杂，从而要求嵌入式处理器系统既能有效支持运算密集型的应用，又能有效支持控制密集型的应用。数字信号处理器(DSPs)能够有效进行运算密集型的实时计算；另一方面，通用微处理器(GPPs)则对控制密集型的应用提供有效的支持。本文从DSP处理器和通用微处理器的功能出发，讨论了两者在指令集、体系结构及存储器结构等方面的异同，同时对两者的性能也进行了评测和比较。结果表明，DSP处理器和通用微处理器都很难同时高效支持运算密集型的应用和控制密集型的应用。将两者体系结构进行融合，研究开发融合型高性能微处理器，是解决该问题的有效途径。
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| 关 键 词： | DSP处理器 通用处理器 嵌入式系统 运算密集型 控制密集型 指令集 体系结构 |
The Comparison between Digital Signal Processor and General-Purpose Processor |
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| YUE Hong,SHEN Li,Dai Kui,WANG Zhi-Ying.The Comparison between Digital Signal Processor and General-Purpose Processor[J].Computer Science,2005,32(3):166-168. |
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| Authors: | YUE Hong SHEN Li Dai Kui WANG Zhi-Ying |
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| Affiliation: | YUE Hong,SHEN Li,DAI Kui,WANG Zhi-Ying School of Computer,National University of Defense Technology,Changsha 410073 |
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| Abstract: | With the wide spreaded applications of embedded system, the power and compliexity of functionality imple- mented in embedded devices is increasing. Thus it is necessary for embedded processor to support both arithmetic-in- tensive and control-intensive computations. The Digital Signal Processors (DSPs) can effectively support the arith- metic-intensive and real-time computations; on the other hand, General-Purpose Processors (GPPs) are suitable for a variety of applications which are control-intensive. This paper is to discuss the differences between DSPs and GPPs in instruction set, architecture type and memory architecture according to their different functions. Performance evalua- tion then is done to prove it. Preliminary results indicate that either DSPs or GPPs can effectively support both arith- metic-intensive and control-intensive computations. Combining them in architecture and developing a hybrid-architec- ture processors is necessary for meeting the requirements of current embedded systems. |
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| Keywords: | DSP General-purpose processor Architecture Instruction set |
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