摘要
介绍了基于FPGA的任意分频系数的分频器的设计,该分频器能实现分频系数和占空比均可以调节的3类分频:整数分频、小数分频和分数分频。所有分频均通过VHDL语言进行了编译并且给出了仿真图。本设计中的分频器没有竞争冒险,可移植性强,占用的FPGA资源少。本设计在Al-tera公司的CycloneⅡ系列EP2C35型FPGA芯片中完全可实现,结果表明设计是正确和可行的。由于分频器应用非常广泛,故本设计具有很强的实用价值。
The design of any coefficient frequency divider based on FPGA is introduced in this paper. The frequency divider which can realize different duty cycle and random coefficient is studied in this paper. It includes integer frequency divider and decimal frequency divider and fraction frequency divider. Depending on the VHDL realization of the algorithm the design has high design flexibility. And their waveforms are given too. The divider has no signal competition and uses less LE. What＇s more, it can be easily transplanted. Experiments and hardware test data on Ahera EP2C35 chip of Cyclone Ⅱ series are given to show that the design is successful. Because frequency divider has wide applications, the design is very practical.
出处
《信息化研究》
2010年第2期59-61,共3页
INFORMATIZATION RESEARCH
基金
江苏省高校自然科学基金资助项目(08KJD140005)
盐城师范学院校级基金资助项目(09YCKL016)
