嵌入式DSP地址产生部件的设计  

The Design of Address Generation Unit for Embedded DSP

作　　者：陈海燕[1] 蒲伟[1] 王勋[1] 

机构地区：[1]国防科技大学计算机学院,湖南长沙410073

出　　处：《微电子学与计算机》2010年第6期188-192,共5页Microelectronics & Computer

基　　金：教育部高性能微处理器技术创新团队项目(210101)

摘　　要：地址产生部件(AGU)是DSP芯片的重要组成部分,通过支持多种寻址模式,提高了指令的执行效率.详细介绍了某嵌入式DSP的寻址模式及其指令编码结构,在此基础上设计了该DSP的AGU,使其不仅支持几种特殊的寻址模式,还支持单周期三寻址操作.最后对该AGU进行了优化.结果表明,优化后的AGU在改善性能和功耗的同时能够有效减少数字信号处理算法的执行周期.The address generation unit（AGU）is an important part of DSP,which can improve the efficiency of instruction execution by supporting multi-addressing modes.This paper introduces the addressing mode of an embedded DSP and the structure of its addressing instruction coding in detail.According to it,the AGU of the DSP has been designed and realized,which can support several especial addressing modes and thrice addressing operations in one cycle.The results of optimizing this AGU show that it has not only improved the performance and saved the power dissipation but also reduced the execution cycles of digital signal processing arithmetic.

关 键 词：AGU 寻址模式 三寻址 地址生成 并行结构 

分 类 号：TP332[自动化与计算机技术—计算机系统结构] TN911[自动化与计算机技术—计算机科学与技术]