Design of the Equal Duty Ratio Arbitrary Integer Frequency Divider Based on FPGA
Hong Li · Modern Electronic Technique · 2005
This paper gives out a design of the equal duty ratio arbitrary integer frequency divider based on FPGA. First introduces the characteristics and application domain of FPGA in brief. Then discusses a few traditional integer frequency dividers. But this paper presents a new concept of programmable frequency divider. An algorithm based on the new concept is introduced also. Using this method can realize 50% duty ratio integral frequency division. The frequency division coefficient is given by control end. The frequency divider is described in VHDL,and synthesized,simulated with Max+PlusⅡfoundation. Last, the N=3 design practice based on the algorithm is given,the experimental results show that the performance has conform to the proposed algorithm.