内部总线

The DM642 External Memory Interface expands two pieces of MT48LC4M32B2 (4M*32 bit SDRAM) and a AM29LV33C (8M bit FLASH). SDRAM is connected to the 64bit data bus of EMIF, can read/write 64bit data at every cpu cycle, be used to store program, data and image.

单片机采用了Cygnal公司的C8051F020，它使用了CIP-51微控制器内核，与MCS-51TM指令完全兼容。C8051F020通过I2C总线和通用I/O口与DM642相连接，接收I2C偏差数据，并通过单片机内部的两个全双工UART输出。

and program of DMA transfer data is realized with VHDL language.

提供了基于PCI总线的多通道同步串行数据采集系统的硬件实现方案，分析了整个系统的结构，详细描述了FPGA内部硬件资源的划分和使用VHDL语言实现DMA传输数据的方法和源代码。

In this paper,the Elmo Servo motion control system made in Israel based on CAN bus is introduced.Each part of the system and its modules are introduced in detail.

本文介绍了运用以色列Elmo伺服及其CAN总线技术实现的交流伺服运动控制系统，具体设计了整个控制系统的各个部分及其内部模块。

For those who are familiar with the inner workings of PCs, think of the PC itself as a tiny network that connects the bus and the expansion slots to the CPU, the RAM, and the ROM.

对熟悉个人计算机内部工作原理的人来说，可将 PC 机本身看成一个小型的网络，它将总线和扩展口连接到 CPU，RAM 和

This section describes the requirements and use of the device bus operations, which are initiated through the internal command register.

这个章节描述了需求和怎样进行设备总线操作，而这些都是通过内部命令寄存器进行初始化的。

Programming is accomplished via the internal device command register and is a four-bus cycle operation.

通过编程实现内部器件命令寄存器，是一个四总线周期操作。

Microcomputer system used by the internal chip, plug-in circuit board components, and systems between the pinboard. between system and system connectivity, by their own bus in various tissues, thus formed a mutual transmission of information and information processing as a whole

微型机系统所使用的芯片内部、电路插件板元器件之间、系统各插件板之间、系统与系统之间的连线，都由各自的总线把各部分组织起来，从而组成一个能彼此传输信息和对信息进行加工处理的整体

The precision and stability is very good so. The module'communication adhibit CAN BUS,it is maximum future.

采集器内部模块间数据通讯及与上位机通讯采用了极有发展前途的CAN总线来实现。

Secondly, the thesis analyzes the design principle of hardware system, and descries the architecture of the solution. It analyzes how to implement AD converter, IDT72V3690 circuit, FPGA chip EP1C2214 design, including RAIDO disk control and application of embedded microprocessor LPC2214.Thirdly, the thesis descripts the design and realization of embedded software of LPC2214. First of all, it brings out the thinking of software layer, and designs the software architecture.

其次，叙述了基于USB总线硬件系统的体系结构及设计原理；详细介绍了如何实现AD转换电路抗干扰以及如何采用嵌入式处理器LPC2214、高速缓存IDT72V3690电路、FPGA芯片EP1C2214等电路设计实现简易RAID0存储阵列；重点叙述了FPGA设计ATA控制器和RAIDO逻辑的过程，介绍了FPGA内部逻辑是如何工作，将数据有序高效地并行存储到磁盘中去的。

After input the reference signal, sine and cosine AC voltage proportional to shaft angle was formed.

采样后经A/D转换和时内部地址总线信号译码，控制轴角数字信号。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。