Design of IP core based on AMBA bus

With the rapid development of integrated circuit(IC)technology,reusable intelligent property(IP)core design is widely valued by the industry.Based on the in-depth study of the functional characteristics of advanced microcontroller bus architecture(AMBA),a design scheme of IP core is presented,and it is divided into the functional modules,and the structural design of the IP core is completed.The relationship between the internal modules of the IP core is clarified,and the top-down design method is used to build the internal architecture of the IP core.The IP core interface module,register module,baud rate module,transmit module,receive module,and interrupt module are designed in detail by using Verilog language.The simulation results show that the designed IP core supports serial peripheral interface(SPI)protocol,the function coverage of IP core reaches 100%,the maximum working frequency reaches 200 MHz,and the resource occupancy rate is less than 15%.The reusable IP core can support multiple data formats,multiple timing transmission modes,and master/slave operation modes,reducing the resource consumption of hardware circuits and having stronger applicability.

ATmega162单片机与交流电机调速控制研究

在交流电机调速控制系统里,可以利用ATmega162单片机进行通信及脉宽调制,并且需要开发单片机与上位计算机进行串行通信的控制界面.给出了交流电机移相调速控制及脉宽调制在ATmega162中的编程实现过程,阐述了使用C语言编写的单片机串行通信接口程序,并说明了利用Delphi编写计算机串行通信界面的方法.

一种实用的粮仓测温仪

介绍由单片机控制的粮仓测温仪 ,给出了硬件电路及软件设计。该测温仪体积小 ,携带方便 ,有效地解决了分散粮仓电缆铺设的问题 。

基于单片机的双机串行通信设计

文章阐述了一种采用 RS— 2 3 2标准通信接口实现双机串行通信的设计方法 ,介绍了 Motorola公司提供的通用电平转换芯片 MC1 488和 MC1 489的使用方法。

串行接口技术在单片机系统中的应用

本文在与并行接口技术相比较基础上介绍了串行接口技术的典型应用电路和使用特点，目的是让读者了解串行接口方法，以便在产品设计时使用该方法。