用FPGA实现异步信号和同步信号的复接

本文介绍了用FPGA实现异步信号与同步信号进行数字复接的一种方法。计算机串口通信采用起止式异步通信的方式，电话信号则是周期采样信号。将两类信号进行数据存储和插码后码速调整，然后高速传输发给接收端进行分离。从而扩大了传输容量。

The multiplex of synchronous signal and asynchronous signal Implemented by FPGA

As a new circuit design technology, FPGA is the most potential and progressive in the field of VLSI during these years.Computer serial communication signal is compliant to asynchronism start/stop control protocol,however,the telephone sampling signal is periodic.A method of multiplexing of the two kinds of signals and its FPGA implementation are introduced in this article.In order to enlarge channel capacity.The two signals must be tramsferred to one signal channel with identical transfer rate.So a method of justification is used here to achieve the multiplex.