X-DSP ALU与移位部件的设计与实现  

Design and implementation of ALU and shifter in X-DSP

作　　者：彭元喜[1] 邹佳骏[1] 

机构地区：[1]国防科学技术大学计算机学院,长沙410073

出　　处：《计算机应用》2010年第7期1978-1982,共5页journal of Computer Applications

基　　金：国家自然科学基金资助项目(60676010);国家863计划项目(2007AA01Z108);教育部长江学者和创新团队发展计划项目

摘　　要：针对DSP CPU的算术运算逻辑单元(ALU)与移位部件在性能、功耗与面积上面临的挑战,研究了X型DSP的CPU体系结构,在对X型DSP ALU部件和移位器部件相关指令进行归类分析的基础上,设计实现了ALU部件和移位器部件。采用Design Compiler综合工具,基于SMIC公司0.13μm CMOS工艺库对ALU移位部件进行了逻辑综合,电路功耗共为4.2821 mW,电路面积为71042.9804μm2,工作频率达到250 MHz。Concerning the challenges on performance,power,area of Arithmetic Logical Unit（ALU） and shifter in DSP CPU,this paper studied the architecture of X-DSP and analyzed the characteristics of all instructions related to ALU unit,and shifter unit and designed and implemented the two units.This paper also synthesized the two computational units by using design compiler with SMIC 0.13 μm CMOS technology library.The total circuit power consumption was 4.282 1 mW,the area of the circuit was 71 042.980 4 μm2,and the frequency was 250 MHz,which met the requirements of the system.

关 键 词：数字信号处理器 算术运算逻辑单元 桶形移位器 核心加法器 验证 

分 类 号：TP342.21[自动化与计算机技术—计算机系统结构]