基于ENC28J60以太网控制器的SPI接口设计

The design of SPI Interface of Ethernet Controller based on ENC28J60

为了解决传统的一对一的数据传输模式,同时改善以太网接口电路存在电路结构复杂、连线较多、容易出错的缺陷,在介绍全球目前最小封装的以太网控制器ENC28J60的特性、内部结构、引脚功能和主要寄存器设置的基础上,以ENC28J60为核心,结合单片机设计一种精简的以太网接口电路,并将此设计应用于智能抄表系统。由于ENC28J60采用SPI串行接口方式,不仅简化设计,而且具有很好的数据传输功能。

In order to solve the traditional data transmission mode of one to one, and improve the defect which exists in complex structure of circuit, wiring, the paper introduced the world＇s smallest package Ethernet controller ENC28J60 at present, including its characteristics, structure, functions of pins and the setting of the main registers, and designed a kind of simple Ethernet net Serial circuit which connects mi- croprocessor. This design is applied to intelligent reading meter system. Because ENC28J60 adopts SPI, the design structure is not only simply, but also has good data transmission function.