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VLIW DSP for mobile applications

机译：适用于移动应用的VLIW DSP

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We have developed a new digital signal processor (DSP) core fornhandheld terminals, the SPXK5 performance and flexibility, is compatiblenwith high-level languages, and its architecture features low-powernconsumption. We describe the SPXK5 architecture and its performance innDSP applications. We also consider the question of application-specificnenhancements. Such architecture enhancements as add-compare-selectninstructions or coprocessors for the Viterbi (1995) decoding algorithmnare employed in some programmable DSPs, and for video codecs, othernarchitectures include either single-instruction multiple-data (SIMD)ninstructions or media coprocessors. While such application-specificnenhancements are valuable when their applications are actually in use,nthey do nothing to enhance the performance of other applications, andnthe more they are added, the greater the increase in chip size andnenergy requirements. In other words, for handheld terminals, suchnenhancements need to be chosen in a careful and balanced way. We havendone this in developing the SPXK5, in which a wide range of signalnprocessing algorithms are efficiently implemented
机译：我们为手持终端开发了一种新的数字信号处理器（DSP）内核，SPXK5的性能和灵活性与高级语言兼容，并且其架构具有低功耗的特点。我们描述了SPXK5架构及其在nDSP应用中的性能。我们还考虑了特定于应用程序的增强的问题。诸如Viterbi（1995）解码算法的加-比较-选择指令或协处理器之类的体系结构增强已在某些可编程DSP中采用，对于视频编解码器，其他体系结构包括单指令多数据（SIMD）指令或媒体协处理器。尽管这些特定于应用程序的增强功能在实际使用它们的应用程序时很有价值，但是它们却无助于提高其他应用程序的性能，并且添加的数量越多，芯片尺寸和能耗要求的增加就越大。换句话说，对于手持终端，需要以谨慎和平衡的方式来选择这种增强。我们在开发SPXK5时就做到了这一点，在其中有效地实现了各种信号处理算法

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