The Research Of The Embedded System Network Access Technology

With the development at fall speed of communication technology, network technology and semiconductor technology, Internet technology design to industrial control and embedded system field permeate gradually. Realizing Internet interconnected is embedded systematic focus field and important direction of development this present. Through realizing a simple Application of network at Embedded System, this paper finishes embedded system Internet's accessing comparatively, and understands embedded system Internet accessing basic principle, makes up, structure and realizing in depth.This paper gives a solution of embedded system Internet accessing, which combines chip TMS320C5402 with interface controller of network RTL8019 to access Ethernet, and then reach Internet through Ethernet. This paper also offers the implementation method of software and hardware in detail, including the memory organization of TMS320C5402 and the design of interface; RTL8019 system structure, basic operation of reading and writing; Principle, function of other parts of hardware's circuit and whole principle picture; TCP/IP protocol suitable for embedded system, software procedure of this system, implementation method of protocol, etc.This result indicates the scheme that combines chip DSP with interface chip of network can realize embedded systematic network accessing. This should offer a kind of new solution for the Network application of home appliances, remote control and long-distance data collection etc.