摘要
研究实现了一种HDLC(High Level Data Link Control)协议的改进方法,该方法把HDLC协议传统的同步传输方式改成了异步传输方式,既保留了原有HDLC协议的主要优点,又增强了传输数据的抗干扰性能,并节省了通信系统的同步时钟接口连线。文中简要介绍了HDLC的协议规程,并提供了CRC及删"0"部分的VHDL代码。最后,描述了HDLC协议的异步传输方式,并通过FPGA完成了HDLC协议的改进。
An improved method of HDLC is presented. The traditional synchronous mode is changed into the asynchronous mode by this method. The anti-interference performance during data method retains the main advantage of HDLC while enhancing the transmission and saving the interface of the communication system. The paper briefs the basic protocol of HDLC and provides the VHDL code of CRC and deleting ＂0＂. Finally asynchronous transmission mode of HDLC is described and the improvement of HDLC is achieved by FPGA.
出处
《通信技术》
2008年第11期78-80,共3页
Communications Technology
