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随着网络的发展,以单片机为中心的数据采集、检测控制等系统接入网络共享信息已成为一种趋势,但由于单片机系统的RS232串口与RJ45网络接口不兼容使得单片机系统接入网络存在困难,本文提出了基于CS8900A的一种单片机RS232串口与RJ45以太网接口转换器的设计方案,转换器总体结构由控制单元、网络接口单元、电源单元组成,还设计了每个单元的硬件电路,并给出了程序流程以及转换器的工作过程。
With the development of the network, it has become a trend that the data acquisition, detection and control system accessing the network with the singlechip as the center has become a trend, but the singlechip system has difficulties in accessing the network due to the incompatibility of the RS232 serial port and the RJ45 network interface of the singlechip system , This paper presents a design scheme of a singlechip RS232 serial port and an RJ45 Ethernet interface converter based on CS8900A. The overall structure of the converter is composed of a control unit, a network interface unit and a power supply unit. The hardware circuit of each unit is also designed. Given the program flow and converter work process.