一种新型分频器的设计实现.pdf

2006 7 222 64 一种新型分频器的设计实现 夏龙根 ( 361005) :针对现有的常用分频器的使用局限性,介绍了一种可以实现任意小数分数分频的新型分频器 预先设置的 分频参数,通过使用 一个带余数输出的除法器,计算出其商和余数, 以确定两 个分频器的分频系数和分频次数, 通过控制两 个分频器交替工作,从而实现任意分频分析了这种新型分频器的工作原理,提出了一种简单的实现电路, 并用 Verilong HDL 语言描述了该分频器,在FPGA 上运行实现,通过仿真证明其可行性 :任意分频器; FPGA;频率合成器; 除法器 :T N772 :B : 1004 373 ( 2006)07 049 03 Implementation of a New Type of Frequency Divider IA Longgen ( iamen University, iamen,361005, China) Abstract: Due to the limitation of the frequency dividers recently widely used, in this thesis,a new type of frequency divider is intro- duced.By the parameter set before, the quotient and remainder can be calculated by a divider with output of remainder,which are used as the division parameter and dividing times of the two dividers.By controlling the two dividers working by turns,the new divider is imple- mented. In this thesis, the principle and theway of implementation are introduced,then circuits is introduced and described by Verilog HDL, finally, it is implemented on FPGA.With FPGA simulation,the feasibility is proved. Keyw ords: frequency divider with no limitation; FPGA;frequency synthesizer;divider , N N + 1 1 n , 10 , X N + 1 , n , 10 - X N , , K , , K , 3/ 2, X n [3] , 50% , , ,