CH395与SPI接口的以太网模块设计

Ethernet Module Design Based on CH395 and SPI Interface

伴随着物联网的高速发展,以太网已经成为很多嵌入式系统中的一个重要模块。针对很多无自带以太网模块的低成本单片机控制器,本设计采用CH395芯片连接dsPIC33系列单片机的SPI接口实现以太网模块,该方案开发难度小,占用单片机硬件资源少,是一种可靠的设计方案。

With the rapid development of the Internet of things（IoT） ,the Ethernet has become an important module of the embedded system. For lots of the cheap microcontrollers without Ethernet module,this paper uses the CH395 chip to connect the SPI interface of the dsPIC33 microcontroller to accomplish the function of the Ethernet. This design is easy, and the occupation of resources is very few, so it is a reliable design.