网络集中器的硬件设计

Hardware Design of Net MUX

介绍了集中器硬件设计方案。该集中器实现了在一个信道上集中三路同步／五路异步、八路异步的数据。通过其内置主串口、外置主串口连接通信设备，实现数据复用。当线路发生故障时，自动切换到备份线路。并从处理器及中断系统、数据通信控制、系统可靠性设计方面讨论了集中器的设计方案。

In this paper, the hardware design of the MUX is introduced, which centralizes 3 synchronous /5 asynchronous or 8 asynchronous data on a single channel. With the internal master serial port and external master serial port connecting to communication equipment, the data multiplex is implemented, which is able to keep working by swithing automaticly to reserve line when the current line fails to work normally. It also makes the communication more secure by encrypting the data issued at the port and the communication line. This paper also studies the interrupt system, data communication control, system reliability design.