This paper introduces the principle of direct digital frequency synthesizer,presents the realization method and simulation result based on FLEX10k complex programmable logic device(CPLD)of Altera Company.

• 介绍了直接数字频率合成器的工作原理,并利用 Altera 公司的 FLEX10k 复杂可编程逻辑器件(CPLD)给出了实现方法和仿真结果。