TI TMS320C6000 DSPs的FLASH引导设计与实现

TMS320C6000 DSPs是德州仪器公司近年来着重推广的高性能数字信号处理器芯片系列，不但运算速度快，还内置了一些常用算法的硬件加速器。在通信争信号处理领域，该芯片系列得到了广泛的应用。根据实际使用经验归纳总结了在TMS320C6000 DSPs环境下，FLASH芯片的缟程(包括编程器编程各种在线编程方法)争上电后DSPs的FLASH自举引导过程的多种方法，描述了二次引导程序的编写争配置，并分析了各种方法的优缺点。该文一方面填补了德州仪器公司在这方面文档的欠缺，对通信争信号处理工作者利用该系列芯片搭建独立完整的DSPs评估环境，乃至基于此系列DSP的产品化过程也有较大的推动作用争借鉴意义。     

符合数字视像解码盒标准的单片DSP

美国德州仪器(TI)公司宣布推出AV7000系列DSPs芯片,该芯片符合世界数字视频广播(DVB)和数字卫星系统的标准,它把DSP全面解决方案所需的编码、解码、显示数字视像功能全集成在一块芯片上。 系统结构 以往的视像解码器系统结构中,是把CPU和传输功能与声频、视频的解压功能及图像重叠功能分开的,AV     

基于TMS320VC5402的G.729A硬件实现

文章通过讲述DSPs一般设计方法、原理 ,介绍了基于TMS32 0VC5 40 2的DSPs的系统板硬件实现 ,使它能够利用G .72 9A算法完成对输入语音或数据的压缩、存储及回放。在确定硬件组成方案同时 ,分析其原理与特点。     

高性能16位定点DSP的Datapath设计及FPGA验证

随着数字化产品的不断普及，以高速、实时为特点的数字信号处理器(Digital Signal Processors，DSPs)越来越多地应用到国防和消费等各个领域。文章介绍了一款嵌入式高性能16位定点DSPs的Datapath(数据通路)设计，以Datapath中各功能单元为线索，叙述其电路实现及FPGA验证。     

DSP芯片技术实验的探索与开发

介绍了数字信号处理器(DSPs)的结构及技术特性，系统地总结了基于TI公司DSP芯片的JTAG仿真开发系统的软件开发工具和系统集成、调试工具，详细地分析了不同的DSP实验的硬件开发环境，并具体地探讨了一般的DSP实验项目(熟悉CC，存储器寻址测试，中断测试，D／A转换，FIR，FTT等)以及针对电信、自动化等专业的专门DSP实验项目(DSP直流电机调速系统扩展实验板DSP语音回放系统扩展实验板等)的开发方案。     

北京慧摩森HN系列伺服控制系统

北京慧摩森电子系统技术有限公司最新推出HN系列伺服控制驱动器。该产品是一种通用型的伺服控制驱动器,以数字信号处理器（DSPs）作为核心控制芯片,采用了先进的全数字电机控制算法,以软件方式实现了电流环、速度环、位置环的闭环伺服控制,具备良好的鲁棒性和自适应能力,可配合交流无刷旋转电机、交流无刷直线电机,以及直流电机和音圈电机,组成伺服控制系统。     

计算高度密集型应用在异构多核DSP上的运行方法研究

研究实现了计算高度密集型应用在异构多核DSP上运行的方法.即利用存储在RISC核外设总线上的FLASH中的应用程序,通过异构多核DSP目标板加电,自动加载到RISC核RAM执行,该应用程序将计算高度密集型应用的DSP程序加载到DSPs核上,并利用RISC核向DSPs核点火执行.主要介绍了异构多核DSP中的RISC核和DSP核的复位、启动方法,DSP核的多种冗余降级工作模式,详细分析了RISC核控制DSP核的原理及操作方法.提出的运行方法完整有效,为相关的研究人员打下了良好的基础.     

双DSP嵌入式指纹采集识别硬件平台

文章针对指纹采集与识别 ,介绍了由AT91FR4 0 816与TMS32 0VC540 2组成的双DSPs应用硬件平台 ,整个系统运算速度快 ,接口能力强 (具有键盘接口电路、LCD驱动电路、USB接口、I2C接口、SPI接口、USART接口 ) ,功耗低 ,支持Virtuoso实时操作系统 ,便于功能扩展     

一种高效的LDPC编码器的DSP设计与实现

目前,大多数LDPC编码器采用的是FPGA实现,文中根据Richarson和Unbanke提出的有效编码算法,具体分析了基于该算法的编码器在DSPs上的设计思路,并联合考虑校验矩阵的存储与运算,给出一种高效的存储方式和矩阵向量乘法的计算方法.此外,结合DSPs的软件流水功能,对程序进行了优化,使实现编码所需的指令周期大幅减少,从而提高编码速率..     

TI推出HDTV兼容数字模拟转换器

德州仪器公司的两种新的数字模拟转换器(DACs),是首批专为高分辨电视(HDTV)的机顶盒(STB)和其它的图像/图形处理应用(包括专业图像编辑,混合和广播设备,PC图形,医疗造像和桌面出版系统)而设计的。通过自动生成HDTV标准所规定的模拟三级同步信号,这些芯片简化了HDTV系统设计,降低了HDTV系统成本,将这些系统更快地带入市场。 由于有一个灵活的输入界面,这些DACs可与各种DSPs,包括TI的广泛用于图像和图形应用的TMS320C600平台,进行方便有效的联接。     

Functional testing of digital signal processors in radiation experiments

This paper analyzes the specifics of digital signal processors’ (DSPs) radiation-induced failures. The general methodology, as well as the hardware and software, for the functional testing (FT) of DSPs in radiation experiments is developed and implemented. The experimental results are presented to demonstrate the effectiveness of the solutions proposed.     

Parallel implementation of the fast Fourier transform on twoTMS320C25 digital signal processors

The author used two fixed-point TMS320C25 digital signal processors (DSPs) to implement in parallel the FFT. The significance of this multiprocessing system is: (1) the number of times block data transfer occurs between these two DSPs is minimum, (2) each DSP can independently perform the same FFT routine with different data set, and (3) the total computational load is nearly equally distributed to two DSPs. The speedup of this system over a single sequential processor is close to two     

The digital signal processor Derby

Applications that use digital signal processing chips are flourishing, buoyed by increasing performance and falling prices. Concurrently, the market has expanded enormously. Vendors abound. Many newcomers have entered the market, while established companies compete for market share by creating ever more novel, efficient, and higher-performing architectures. The range of digital signal-processing (DSP) architectures available is unprecedented. In addition to expanding competition among DSP processor vendors, a new threat is coming from general-purpose processors with DSP enhancements. So, DSP vendors have begun to adapt their architectures to stave off the outsiders. The author provides a framework for understanding the recent developments in DSP processor architectures, including the increasing interchange of architectural techniques between DSPs and general-purpose processors     

Multiple digital signal processor environment for intelligent signal processing

We describe a novel, expandable, multiple digital signal processor (DSP) architecture with a symbolic processing host. A multiprocessor board, called Odyssey, based on this architecture has been developed to combine symbolic and real-time digital signal processing in a single computing environment. Some of the key features of the board are: 20 million multiply/accumulates per second, 512K bytes of data space, and expandability to 16 boards on a NuBus host. The DSPs used are the TMS32020 signal processing chips developed by Texas Instruments, and the host is Texas Instruments' Explorer, a LISP machine workstation. This provides environment to perform many intelligent signal processing tasks by associating meaningful relationships between quantitative (signal processing) and qualitative (symbolic processing) entities to develop inferences using expert system technology. Applications such as grammar-driven connected speech recognition, neural network simulation, EEG analysis, and generation of speech from general English text with natural language processing are some of the tasks that can utilize the computational power of the multiple DSP and/or the associated symbolic processing capabilities. Software development tools to implement applications include the device driver to facilitate communication between the host processor and the Odyssey board, a unique window-based debugger resident on the Explorer that allows for simultaneous state display of all the processors on the board, a FORTH interpreter for high-level language programming, and a cross-assembler/linker for assembly level programming.     

Quantised sine signals estimation algorithm for portable digital signal processor based instrumentation

The principles for the development of portable instrumentation equipment (multimeters, frequency meters, etc.) using quantised sine signals, with a common unknown fixed frequency, and an estimation algorithm implemented on digital signal processors (DSPs) are described. An unknown internal sine signal is generated. For measurements, analog to digital converters (ADCs) acquire multiple samples of sine signals, which are quantised and transmitted to the DSP. A precise quantised sine signal, with a common unknown fixed frequency, signal estimation algorithm, for DSP-based instrumentation, is presented. An iterative process is performed to obtain amplitudes, phases, dc components, common frequency and to control the ADC number of bits. Final solutions depend on the initial values, obtained using different classical estimation algorithms. The accuracy of the initial values of iterations and the number of used points have a large influence on the speed of convergence. The algorithm stops when quantisation conditions are satisfied.     

Microprocessors and digital ICs for motion control

This paper reviews the developments in microprocessors and digital ICs with a special attention to applications to motion control. First, the use of microprocessors and digital ICs in the control of electric motor drives is considered. General-purpose microprocessors and microcontrollers are then presented with emphasis on features that are necessary for the implementation of real-time control systems. High-performance advanced processors such as digital signal processors (DSPs), reduced-instruction-set computing (RISC) processors, and parallel processors are studied. Development and debugging tools required for developing sophisticated microprocessor-based control systems are considered. The capabilities of application-specific integrated circuits (ASICs) in motion control and their design process are examined. Typical application examples illustrating research work in digital motion control using microprocessors and digital ICs are presented. The potentials of new devices are considered for application to high-performance drive systems. Trends for future development of the microprocessor technology for motion control applications are projected     

The TMS320 family of digital signal processors

This paper begins with a discussion of the characteristics of digital signal processing, which are the driving force behind the design of digital signal processors. The remainder of the paper describes the three generations of the TMS320 family of digital signal processors available from Texas Instruments. The evolution in architectural design of these processors and key features of each generation of processors are discussed. More detailed information is provided for the TMS320C25 and TMS320C30, the newest members in the family. The benefits and cost-performance tradeoffs of these processors become obvious when applied to digital signal processing applications, such as telecommunications, data communications, graphics/image processing, etc.     

Computer architecture for digital signal processing

In this paper, a comprehensive overview of Computer Architecture for Digital Signal Processing is given. Such architectures are seen as the result of constraining influences from the nature of digital signal processing algorithms, architectural techniques including appropriate choice of primitive elements, the underlying digital system technology, and programming languages for digital signal processing. Following a consideration of these influences, several examples are given ranging from chips through board level processors, to attached support processors with very high throughput. Trends for the future are discussed throughout the paper.     

数字信号处理器浅析

数字信号处理器是一种按程序高速运算的微处理器。详细讨论了数字信号处理器在声场上的应用原理和特性。用数字演算的方法来模拟环境特性创造出不同的空间感 ,使听者在家里听到指定声场中所产生的三维立体声 ,有如身临其境的感觉。