《通信与电子信息科技英语》课件unit 9

1、Implementationof DSP SystemsNew words and phrases1 implementation n.实现2 routine n.程序3 algorithm n.算法4 non （前缀)非,不 noncriticaladj.非临界的,非关键的5 constraint n.约束,强制6 justify vt.调整；证明正确7 silicon n.硅,硅元素 silicon compiler硅编译器；硅编辑程序8 chip n.芯片,小片silicon chip硅片9 testability.n.可测试性,易测性10 compiler n.编译器11 family n.系列,族12 library n.库13 generalpurpose adj.通用的，多用一般用途的14 multiplier n.乘法器n.乘法 Implementationof DSP Systems15 highlevel adj.高级的.16.behavioral adj.行为的17.simultaneously adv.同时地18.parallel adj.并行的,平行的;并联的

2、 parallelismn.并行性,并行操19.execution n.执行20.debugging n.调试,程序调整debuggern.调试程序,排错程序21.generality n.一般性,通用性22.suboptimal adj.次最佳的,接近最佳的23.nutshell n.最简单扼要的表现法in a nutshell简言之,概括起来24 doubleprecision adj.双精度的25 wise (后缀)方向，位置，状态bitwisen.按位 bitwise operation逐位运算Implementationof DSP Systems26 cache n.高速缓冲存储器;隐含存储器cache memory高速缓冲存储27 conflict n.冲突28 peripheral adj.外围的；n.外围设备29 amongst prep.在中间,在之中30 mnemonic(=mnemonical)adj.帮助记忆的；n.助记符 mnemonic assembly language助记汇编语言31addressing n.寻址,选址addressing mode寻址

3、模式(方式),选址方式32 macroinstruction n.宏指令33 subroutine n.子程序34 fetch n.存取，取数，取指令instruction fetch取指令,指令取出35 recursive adj.递归的,回归的 36 reversal n.反转,逆转 37 increment n.增量,增加 address increment地址增量；地址加1Implementationof DSP Systems38 decrement n.减缩，减值address decrement地址减1；地址减量39 manufacturer n.制造业者,厂商40 Texas n.得克萨斯，德州（美国）41 homepage n.主页42 bus n.总线address bus地址总线43 Inc.（incorporated）n.股份有限公司44 throughput n.吞吐量,吞吐率45 giga n.吉,千兆,十亿(G，109)1 building block 标准部件，基本组成部分2 largescale production 规模生产3 PLD(program

4、mable logic device)可编程逻辑器件4 FPGA（field programmable gate array)现场可编程门阵列5 fullcustom（fullcustomized）全定制的Implementationof DSP Systems6 integrated circuit 集成电路7 DSP(digital signal processor)数字信号处理器8 VLSI(very large scale integration)超大规模集成电路9 ASIC(applicationspecific integrated circuit)专用集成电路10 with the aid of 借助于,通过的帮助11 power consumption 功耗12 processing speed (数据)处理速度13 production cost 生产成本14 instruction set 指令集15 external memory 外部存储器16 floatingpoint operation 浮点运算Implementationof DSP Systems17

5、internal memory 内部存储器18 Harvard architecture 哈佛体系结构19 clock cycle 时钟周期20 HLL(highlevel language)高级语言21 word length 字长22 FFT(fast fourier transform)快速傅里叶变换23 RAM(random access memory)随机存取存储器,内存 24 lookup table 查找表25 assembly language 汇编语言26 MOPS(million operations per second)百万次运算秒27 MIPS(million instructions per second)百万条指令/秒28 program memory 程序存储器29 FLOPS(floatingpoint operations per second)浮点运算次数/秒Implementationof DSP Systems The implementation of any building block of digital signal processi

6、ng can be performed using a software routine on a simple personal computer.In this case,thedesigners main concern becomes the description of the desired filter as an efficient algorithm that can be easily converted into a piece of software.In such cases,the hardware concerns tend to be noncritical,except for some details such as memory size,processing speed,and data input/output.Another implementation strategy is based on specific hardware,especially suitable for the application to hand.In such

7、cases,the system architecture must be designed within the speed constraints at a minimal cost.This form of implementation is mainly justified in applications that require high processing speed or inlargescale production.The four main forms of appropriate hardware for implementing a given system are:Implementationof DSP Systems1.The development of a specific architecture using basic commercial electronic components and integrated circuits.2.The use of programmable logic devices(PLD),such as field

8、 programmable gate arrays(FPGA),which represent an intermediate integrated stage between discretehardware and fullcustom integrated circuits or digital signal processors.3.The design of a dedicated integrated circuit for the application to hand using computerautomated tools for a very large scale integration(VLSI)design.The VLSI technology allows several basic processing systems to be integrated in a single silicon chip.The basic goal in designing applicationspecific integrated circuits(ASIC)is

9、to obtain a final design satisfying very strict specifications with respect to,for example,chip area,power consumption,processing speed,testability,and overall production cost.These requirements are often achieved with the aid of computer automated design systems.The first general Implementationof DSP Systemspurpose semiautomated design tools were the silicon compilers developed mainly in the mid1980s.In these systems,a midlevel description language of the desired signal processing system is con

10、verted into the final design using a library describing the physical implementations of standard elements such as adders,memory units and multipliers.Nowadays,the silicon compilers have evolved to have a more modern approach for ASIC design where a highlevel representation form,commonly referred to as a behavioral description,is employed.4.The use of a commercially available general purpose digital signal processor(DSP)to implement the desired system.The complete hardware system must also includ

《《通信与电子信息科技英语》课件unit 9》由会员小萌新****ao分享，可在线阅读，更多相关《《通信与电子信息科技英语》课件unit 9》请在金锄头文库上搜索。