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【速搜问答】嵌入式DSP处理器是什么

问答 admin 2个月前 (04-10) 72次浏览 已收录 0个评论

汉英对照:
Chinese-English Translation:

嵌入式DSP处理器(EDSP)是一种非常擅长于高速实现各种数字信号处理运算(如数字滤波、频谱分析等)的嵌入式处理器。由于对DSP硬件结构和指令进行了特殊设计,使其能够高速完成各种数字信号处理算法。

Embedded DSP processor (EDSP) is a kind of embedded processor which is very good at high-speed implementation of various digital signal processing operations (such as digital filtering, spectrum analysis, etc.). Due to the special design of DSP hardware structure and instructions, it can complete all kinds of digital signal processing algorithms at high speed.

嵌入式 DSP 处理器(Embedded Digital Signal Processor,EDSP)是一种非常擅长于高速实现各种数字信号处理运算(如数字滤波、频谱分析等)的嵌入式处理器。由于对 DSP 硬件结构和指令进行了特殊设计,使其能够高速完成各种数字信号处理算法。

Embedded digital signal processor (EDSP) is a kind of embedded processor which is very good at high-speed implementation of various digital signal processing operations (such as digital filtering, spectrum analysis, etc.). Due to the special design of DSP hardware structure and instructions, it can complete all kinds of digital signal processing algorithms at high speed.

发展

development

20 世纪 70 年代初,随着微计算机技术的发展,开始采用通用计算机实现数字滤波、频谱分析等传统的数字信号处理,使得数字信号处理从仅限于理论研究推广到实际应用,而且拓宽到了系统控制领域。20 世纪 70 年代末,早期的 DSP 处理器出现,使得各种数字信号处理的算法可以用硬件处理器的方式实现。与此同时,在一些 DSP 处理器厂商的宣传下,人们逐渐将 DSP 等同于 DSP 处理器(Digital Signal Processor)。当然应该清楚,数字信号处理算法的实现,既可以用 DSP 处理器,也可以用 MCU、MPU 来完成,只是用 DSP 处理器专用性更强。近年来,采用 FPGA 器件实现数字信号处理算法,具有更快、更灵活的优势,因此 DSP 硬件实现呈现多样化的特点。

In the early 1970s, with the development of microcomputer technology, general-purpose computer was used to realize the traditional digital signal processing, such as digital filtering and spectrum analysis, which made the digital signal processing not only limited to theoretical research, but also extended to practical application, and expanded to the field of system control. At the end of 1970s, the early DSP processor appeared, so that various digital signal processing algorithms can be implemented in the way of hardware processor. At the same time, under the propaganda of some DSP processor manufacturers, people gradually equate DSP with digital signal processor. Of course, it should be clear that DSP processor, MCU and MPU can be used to realize digital signal processing algorithm, but DSP processor is more specific. In recent years, using FPGA devices to implement digital signal processing algorithm has the advantages of faster and more flexible, so DSP hardware implementation presents a variety of characteristics.

20 世纪 80 年代,DSP 应用开始从在通用单片机中以普通指令实现 DSP 功能,过渡到采用嵌入式 DSP 处理器。嵌入式 DSP 处理器有两个发展来源:一是由 DSP 处理器经过单片化、EMC 改造,增加片上外设成为嵌入式 DSP 处理器,TI 公司的 TMs320c2000/C5000 等属于此范畴;二是在通用单片机或片上系统(SoC)中增加 DSP 协处理器发展而来,例如 Intel 公司的 MCS 一 296。

In the 1980s, the application of DSP began to use embedded DSP processor instead of ordinary instructions in general MCU. There are two sources for the development of Embedded DSP processor: one is to add peripherals on chip to become embedded DSP processor after monolithic and EMC transformation of DSP processor, and tms320c2000 / C5000 of TI company belongs to this category; the other is to add DSP coprocessor in general single chip microcomputer or system on chip (SOC), such as mcs-296 of Intel company.

同时,推动嵌入式 DSP 处理器发展的一个重要因素是嵌入式系统的智能化,例如各种带有智能逻辑的消费类产品、生物信息识别终端、带有加解密算法的键盘、ADSL 接入、实时语音压解系统和虚拟现实显示等。这类智能化算法一般运算量较大,特别是向量运算、指针线性寻址等较多,而这些正是嵌入式 DSP 处理器的长处所在。

At the same time, an important factor to promote the development of Embedded DSP processor is the intelligence of embedded system, such as a variety of consumer products with intelligent logic, biological information recognition terminal, keyboard with encryption and decryption algorithm, ADSL access, real-time voice compression system and virtual reality display. This kind of intelligent algorithm generally has a large amount of computation, especially vector operation, pointer linear addressing and so on, which are the advantages of Embedded DSP processor.

特点

characteristic

嵌入式数字信号处理器的长处在于能够进行向量运算、指针线性寻址等运算量较大的数据处理。

The advantage of embedded digital signal processor is that it can carry out vector operation, pointer linear addressing and other large amount of data processing.

嵌入式数字信号处理器是专门用于信号处理的嵌入式处理器,在系统结构和指令算法方面经过特殊设计。因而具有很高的编译效率和指令执行速度。DSP 芯片内部采用程序和数据分开的哈佛结构。具有专门的硬件乘法器,广泛采用流水线操作。提供特殊的 DSP 指令,可以快速实现各种数字信号处理算法。

Embedded digital signal processor is a special embedded processor for signal processing, which has been specially designed in system architecture and instruction algorithm. Therefore, it has high compilation efficiency and instruction execution speed. In DSP chip, Harvard structure is used to separate program and data. With special hardware multiplier, pipeline operation is widely used. Special DSP instructions are provided to realize various digital signal processing algorithms.

代表产品

Representative products

嵌入式 DSP 处理器比较有代表性的产品是 Texas Instruments 公司的 TMS320 系列和 Motorola 公司的 DSP56000 系列。TMS320 系列处理器包括用于控制的 C2000 系列、用于移动通信的 C5000 系列,以及性能更高的 C6000 和 C8000 系列。DSP56000 已经发展成为 DSP56000、DSP56100、DSP56200 和 DSP56300 等几个不同系列的处理器。另外,Philips 公司近年也推出了基于可重置嵌入式 DSP 结构,采用低成本、低功耗技术制造的 R.E.A.LDSP 处理器,特点是具备双 Harvard 结构和双乘/累加单元,应用目标是大批量消费类产品。

The representative products of Embedded DSP processor are TMS320 series of Texas Instruments and dsp56000 series of Motorola. TMS320 series processors include C2000 series for control, C5000 series for mobile communication, and C6000 and c8000 series for higher performance. Dsp56000 has developed into dsp56000, dsp56100, dsp56200 and DSP56300. In addition, Philips has also launched r.e.a.ldsp processor based on Reconfigurable Embedded DSP structure and low-cost and low-power technology in recent years. It is characterized by dual Harvard structure and double multiply / accumulate unit, and its application target is mass consumer products.


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