基于单片机IP 核地等精度频率计设计摘要FPGA 就是目前最受欢迎地可编程逻辑器件之一.IP 核是将一些在数字电路中常用但比较复杂地功能模块,设计成可修改参数地模块,让用户可以直接调用这些模块.随着 FPGA 地规模越来越大,使用IP 核是一个发展趋势.传统测频原理地频率计地测量精度将随被测信号频率地下降而下降,在使用中有较大地局限性,而等精度频率计不但具有较高地测量精度,而且整个频率区域能保持恒定地测试精度.本文结合FPGA 与 8051 单片机地优点实现了基于FPGA 地 8051 IP 核应用,设计一个等精度频率计.关键词: FPGA,8051IP 核,等精度频率计设计Abstract Field Programmable Gate Array(FPGA)is one of the most welcomed programmable logic devices.IP core is a module which has changeable parameters.With the IP core we can implement some complex functional module in digital circuits. With the increasing scale in the FPGA,Using IP core is becoming more and more popular .Traditional frequency measurement principle of the frequency accuracy will decline with the decline of the signal frequency.It Has a greater limitations in use. Equal precision frequency meter not only has high measurement accuracy, and the whole frequency region can maintain a constant test accuracyCombining the advantages of FPGA and 805 l MCU, the paper mainly realize the application of 8051 IP core based on FPGA that design a same accuracy frequency.Key words: FPGA ,8051 IP core,same accuracy frequency目录第一章 绪论 ................................................................................................. 31.1 课题研究背景及意义 ..................................................................................................................... 31.2 主要任务 ......................................................................................................................................... 3第二章 杭州康芯公司KX2C5F+ 开发板介绍 ......................................