接口总线

This paper precisely conducts the special topic research in view of some important technologies of the digitized control module.(1) AC motor control circuit of PAN/TILT is designed ,which speed is controlled by AT89C51 MCU. DC motor control circuit of LENS is designed too.(2) The hardware and software of automatic temperature control is designed, which used in camera protect box without A/D IC. A kind of single wire communication IC is used in the circuit. So, the program is given.(3) A method of video switch without picture shock is discussed in this paper, and 16x8 video switch circuit is designed. AT89C51 can carry out time sequence logical control with the sync signals by request..(4) The module of real-time clock is designed, in which, LCM is used, a kind of three-wire communication IC is used too.

1给出了一种由89C51单片机控制的简单易行的交流云台转动变速控制电路，实现了云台及其电动三可变镜头的控制；(2)给出了无需外加A/D、单线通信的防护罩自动温度控制电路，完成了单片机温度控制软件的设计；(3)提出了"无抖动"视频切换的设计思想，给出了16×8的视频切换电路，利用单片机在视频信号的场消隐期控制切换，从而实现了"无抖动"切换；(4)给出了一种三线接口通信的液晶显示实时时钟电路，完成了程序设计；(5)提出了在视频监控系统数字控制模块中，用CAN总线取代传统的RS-485总线，实现PELCO-P协议传输的方案。

The AHB bus interface design consists of master module interface design and slave module interface design.

AHB总线接口设计划分为主控模块接口设计及从模块接口设计。

The system uses temperature and humidity sensor SHT11 and smoke sensor MQ-N5 to collect data. SHT11 is a digital sensor with highly integrated inner system and anti-jamming capacity, which makes the collected signal more precise. The integrated I2C bus interface is a sensor, which can directly connect with any type of microprocessor and microcontroller system, it is very simple and practical.

本系统采用温湿度传感器SHT11和烟雾传感器MQ-N5来采集数据，SHT11是个数字传感器，内部高度集成，抗干扰性能，使采集的信号更准确，集成的I2C总线接口能是传感器可直接通过I2C总线与任何类型的微处理器、微控制器系统连接，十分简单实用。

For those multi processor system whose chip microcomputers connect with each other through the long cable, we can use MAX485 interface chip to deliver the data reliably and realize the "long line" multi master processor system by reforming the related state service program of the I 2C bus in.

对单片机之间要用较长电缆相连的多机系统，通过修正 87C5 5 2中 I2 C总线的相关总线状态服务程序，就可采用 MAX4 85接口芯片来解决长距离传输的可靠性，实现"长线"多主机系统。

Some architectures are dependent entirely on single-board computers, such as CompactPCI, PXI, VMEbus, VXI, PICMG architecture, etc. In the Intel PC world, the intelligence and interface/control circuitry is placed on a plug-in board that is then inserted into a passive backplane.

一些架构是完全依赖单板计算机，像是CompactPCI ， PXI总线， VME总线， VXI总线，符合PICMG架构，英特尔等在世界个人电脑，情报和接口/控制电路是放在一个插件板，然后插入被动背板。

It can realize protecting in the multi-situations. Furthermore, by using the normal serial interface RS-232C,we make the intelligence releaser realize communication with PC computer. By using the bus system, the target of remote controlling is realized. All of them strengethen the releaser's functions and make it accord with requirements of distribution system.

此外，采用目前最常用的串行通信标准总线接口 RS－232C，实现了现场智能脱扣器与PC机的双向通信功能，通过总线系统达到遥调、遥控的目的，使得断路器的性能得到提高，功能得到增强，符合配电系统的要求。

It can realize protecting in the multi-situations. Furthermore, by using the normal serial interface RS-232C,we make the intelligence releaser realize communication with PC computer. By using the bus system, the target of remote controlling is realized. All of them strengethen the releasers functions and make it accord with requirements of distribution system.

此外，采用目前最常用的串行通信标准总线接口 RS－232C，实现了现场智能脱扣器与PC机的双向通信功能，通过总线系统达到遥调、遥控的目的，使得断路器的性能得到提高，功能得到增强，符合配电系统的要求。

A low power AMBA bus system is implemented. In order to separate the core logic from bus interface, a new local bus is defined.

完成了低功耗的AMBA总线系统的设计，并在总线接口和核心逻辑分离的指导原则下，定义了一种新的局部总线。

This design greatly improves the reliability,aseismicity and anti-interference of control system. PC/104 bus ; Optical fiber transceiver module ; CPLD ; Optical fiber ; Self-healing

本文设计的PC/104接口板，由于采用了复杂可编程器件CPLD和CAN总线技术，因此节省了硬件资源，提高了抗干扰能力。1 CAN总线1.1概述CAN总线最早由BO

Pinout: C High-performance 32-bit RISC Architecture C High-density 16-bit Instruction Set C Leader in MIPS/Watt C Little-endian C Embedded ICE (In-circuit Emulation) 8-, 16- and 32-bit Read and Write Support 256K Bytes of On-chip SRAM C 32-bit Data Bus C Single-clock Cycle Access Fully Programmable External Bus Interface C Maximum External Address Space of 64M Bytes C Up to Eight Chip Selects C Software Programmable 8/16-bit External Data Bus Eight-level Priority, Individually Maskable, Vectored Interrupt Controller C Four External Interrupts, including a High-priority, Low-latency Interrupt Request 32 Programmable I/O Lines Three-channel 16-bit Timer/Counter C Three External Clock Inputs C Two Multi-purpose I/O Pins per Channel Two USARTs C Two Dedicated Peripheral Data Controller Channels per USART Programmable Watchdog Timer Advanced Power-saving Features C CPU and Peripheral Can be Deactivated Individually Fully Static Operation: C 0 Hz to 75 MHz Internal Frequency Range at VDDCORE = 1.8V, 85C 2.7V to 3.6V I/O Operating Range 1.65V to 1.95V Core Operating Range -40C to +85C Temperature Range Available in 100-lead TQFP Package

M5L8253P-5引脚说明： C型高性能32位RISC架构C高密度以MIPS /瓦C小端C十六位指令集C领袖嵌入式冰8 - 16 -位和32位的读写支持256K的片上SRAM的 32位数据总线C单时钟周期存取字节完全可编程的外部总线接口C最大的外部地址空间的64M字节多达8个C芯片选择C软件可编程8位外部数据总线8级优先级，独立可屏蔽，向量中断控制器C四外部中断，其中包括一个高优先级，低延迟中断要求32个可编程I / O口线三通道16位定时器/计数器C三个外部时钟输入C两多用途I / O引脚每通道2个通用同步C两专用外设数据控制器通道每个USART可编程看门狗定时器先进的节能特性 CPU和外设可停用独立全静态工作中：C 0 Hz至75 MHz的频率范围内的VDDCORE = 1.8，85℃2.7V到3.6VI / O的操作1.65V到1.95V范围核心工作电压范围在- 40C至+85 C温度范围内使用的100引脚TQFP封装

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。