外存储器

CPLD实现DSP片外存储器扩展

Extension of DSP out-memorizer by CPLD

它采用并行方式连接系统内的所有主从设备，无需CPU参与即可在外设和片内片外存储器间传输数据。

It connects all masters and slaves in the system in a parallel fashion and enables data transfers between peripherals and on-and off-chip memories without any CPU intervention .

基于DSP的全数字化无刷直流电机伺服系统，由包括DSP和片外存储器的以TMS320F240组成的小系统，及反馈信号采集模块2部分组成。

The servo system for full-digital BLDC motor consists of DSP , memory subsystem based on TMS320F240 and the module for feedback signal acquisition .

与硬件管理的cache不同，软件管理的片上存储器需要由软件通过数据传输语句显式地管理所有片上与片外存储器之间的数据传输，决定数据进入存储器的时机和位置。

Different with hardware-managed cache , software-managed on-chip memory relies on software to explicitly manage all the data transfers between on-chip memory and off-chip memory , and decide when and where the data will enter into memory .

随着计算机性能的迅速提高，系统越来越强烈地要求所配置的高速外存储器有更好的联机性能。I/O性能增长与CPU速度增长的严重失配，使I/O瓶颈问题日超严重。

With the rapid increase of computer performance , the system keenly demands its storage equipments to have better performance , since the enhancement of CPU performance is much greater than that of I / O perfomance .

Prolog中的数据主要以事实的形式存在，构成Prolog的事实库，持久化即是对事实库的持久化，将其保存到外存储器。

In Prolog , the data exist mainly in the form of facts constituting the fact database . The so-called persistence is a process to perpetuate the fact database and extend it to the external memory .

优良的SRF分配方案还应能在避免引入额外的片外存储器传输的前提下，有效地捕获流应用中广泛存在的生产者消费者局部性，并尽可能地开发计算与访存并行。

A perfect SRF allocation scheme should avoid introducing extra off-chip memory transfers , efficiently capture the widely existed producer-consumer locality , and exploit the parallelism between computation and memory access .

设计以80C196KC单片机为核心的汽车发动机怠速控制系统，扩展片外存储器和I/O口，增加了通信电路，设计直流电机的驱动电路。

The automobile engine idle speed system and the drive circuit of DC motor were designed based on80C196KC microprocessor , extend ROM , I / O and communication port .

从内存储器到外存储器复制。

To copy , usually from internal to external storage .

利用计算机求解时无疑要借助于外存储器。

Certainly , external memory is needed , when the computer is used .

外存储器容量的问题与猜想

Problems and Conjectures on The Capacity of External Memory

外存储器功能分析

Analysis of the Functions of External Memories

硬件设计主要包括前端六路A/D数据采集通道设计、片外存储器扩展设计以及蓝牙通信电路设计。

The hardware design includes six-way A / D channels design , off-chip memory expansion and Bluetooth communication circuit design .

讨论高道密度外存储器中主轴电机的流体动压轴承中的槽形结构参数对轴承性能的影响。

Effects of groove parameters of Hydrodynamic Bearing ( HDB ) in spindle motor for the high density storage device on its performance are discussed .

鉴于存储器是数据最主要的驻留场所，因此，防范攻击首要的是对处理器的片外存储器进行保护，其关键技术手段包括存储器的机密性和完整性保护。

Since memory is the primary place to store the data , the most effective way to against attack is the protection of off-chip memory , i.e. confidentiality protection and integrity protection .

本文讨论了增加外存储器容量的问题，提出了分层式磁光盘和利用自组织材料制大容量存储盘的猜想。

The problem to increase the capacity of external memory is discussed in this paper , and the conjectures of layered CD MO and mass memory made of self organizing material , are also presented .

在没有内部存储器的微处理器软核的设计过程中，如何正确建立软核与外存储器之间的接口是验证工作的关键之一。

In the design process of the microprocessor soft - core without inside memory , how to set up the correct interface between soft - core and outside memory is a key of the verification work .

装置硬件由模拟量处理单元、开关量输入单元、开关量输出单元、装置的电源模块、3150芯片：外存储器的扩展电路、收发器、附加电路等几部分组成，在论文中给出了具体实现电路。

The hardware circuit of the device was presented , which included the analog processing unit , the digital input unit , the digital output unit , the power source module , external memory expanded circuit of 3150 chips , the transceiver and the additional circuit .

因此，需要外接存储器来扩展DSP的存储空间。

Therefore , DSP memory space needs to be extended by connecting external memory devices .

以凌阳公司的SPR4096作为外扩存储器，可实现大量语音资源的播放。

Using the SPR4096 of SUNPLUS as an extent ROM , a large mount of data can be transformed to voice .

整个系统以DSP为核心，通过外扩存储器、时钟、模拟量采集、数字量控制、通讯等模块较好的实现了系统设计要求。

Consisting of DSP which is the core of the system , extra memory , analog signal collecting module , numerical signal controlling module and communicating module etc , the whole system carries out the tasks preferably .

DDR存储器作为处理器的片外主存储器，是一种高性能、低成本的存储解决方案。

DDR memory is a kind of high performance and low cost memory solution , as a main external memory of the central processing unit ( CPU ) .

针对RAM受干扰时其中保存的信息易发生畸变的特点，论述了在单片机应用系统中对片外数据存储器实现奇偶校验的具体方法，对于设计单片机应用系统具有较高的指导作用和参考价值。

In view of the character that message in RAM has mutability when the RAM is subjected to interference , this paper discusses the concrete method of accomplishing odd-even check for out-of-chip data memory in SCM systems . It has great guiding significance and practicability for designing SCM application systems .

介绍了基于TMS320LF2407A控制系统的电路设计，包括A/D、D/A转换电路设计，外扩存储器设计，RS-232串行通信接口设计，3-3V-5V电平转换电路设计，JTAG仿真接口设计等内容。

Introduce the design of DSP control board , including : A / D , D / A convert circuit design , external RAM / ROM system design , RS-232 serial communication interface design , 3.3V-5V voltage convert circuit design and JTAG emulator interface design etc.

单片机系统片外数据存储器奇偶校验的实现

The Realization of the Odd-Even Check for Out-of-chip Data Memory in SCM Systems

外扩存储器用于流量值的存储以便用户以时间为基准查询使用情况。

Outside expand memory stored flow value so that the users could inquire about the information of the usage .

着重介绍了MCS-8031单片机的应用，与外扩存储器和I/O口的连接。

The emphasis is put upon the application of MCS-51 8031 single chip microcomputer , and the linking to memory extended , I / O interface .

以8031单片机应用系统为例，说明了一种超过8031CPU寻址能力的大容量片外数据存储器的扩展方法。

Take the 8031 SCM application system as an example , illuminate a method for expending the large capacity data memory surpassing the 8031 CPU addressable scope .

天然气现场智能流量仪表主要由旋涡传感器、温度传感器、压力传感器、A/D转换器、外扩存储器、单片机及液晶显示模块组成。

The intellectual on-the-spot flowmeter of natural gas consisted of swirl sensor , temperature sensor , pressure sensor , A / D converter , outside expand memory , single chip microcomputer , LCD module , etc.

文中详细叙述了系统工作流程、外接存储器接口设计、多电压供电电源模块设计与监测、视频数据流的传输与控制等组成单元的功能、原理。

The work flow of the solution in detail , the function and principle of components , such as the external memory interface , the module of multi-voltage power supply and monitoring , the transport and control of digital video data stream are presented .