基于FPGA的数字分频器设计与实现

摘要

Frequency divider is one of the important devices in many test and measure circuits .Combi-ning with the principle and characteristics of kinds of frequency dividers , a kind of digital frequency di-vider with arbitrary numbers based on the FPGA is proposed in this paper .The FPGA chip in the EDA implemental box is utilized to process the proposed design .Also 4*4 keyboard , Nixie tubes and LED are applied to input and output data in this circuit .The presented divider can divide integer and deci-mal frequency including types of event integer ,odd integer , decimal and fraction .Simulations show the validity of the proposed frequency divider .%分频器是很多测试、测量电路中使用的重要器件之一。本文在综合各种分频器设计的原理和特点的基础上，设计了一种基于FPGA的任意分频器。设计中不但使用了EDA实验箱的FPGA芯片，还使用了4*4键盘、数码管和LED资源。该分频器可根据输入的数值，实现整数（包括奇数和偶数）、小数和分数的分频，软件仿真和实验箱验证结果以及示波器显示结果验证了该设计的有效性。