Am79C940网络接口控制器在MC68360系统中的应用

Application of Am79C940 network interface controller in MC68360 system

在以MC68360为核心的某型网络通信设备中,采用Am79C940作为网络接口。设计Am79C940和MC68360的接口硬件电路,使用MC68360的2个IDMA通道在中断控制方式下,分别从Am79C940收/发数据。通过建立中断服务例程和缓冲链表数据结构,设计实现了基于Nucleus操作系统的网络驱动程序。运行实测表明接口工作性能稳定可靠,满足实际应用要求。

In certain network communication equipment with MC68360 core, Am79C940 is adopted as network interface. The interface hardware circuit between Am79C940 and MC68360 is designed,and MC68360＇s two IDMA channels are used to receive and transmit data respectively with Am79C940 under the interrupt control mode.By establishing interrupt service routines and buffer-list data structure, the driver program based on Nucleus operating system is also designed. Running test shows that the interface is stable and reliable, and meets the requirement of practical application.