The phase adder in the model is widely applied which could enable system to hold high frequency revolution, fast frequency switching, and easily digital modulating of the signal's phase and amplitude.
模块中的相位累加器，使系统具有较高的频率分辨率，可实现快速频率切换，很容易实现频率、相位和幅度的数控调制，有广泛的应用价值。
Frequency controlled data (m) plus an accumulative phase data output by a phase register in an N-bit adder when a clock pulse comes, the result is sent to the input port of the phase register.
每来一个时钟脉冲，N位加法器将频率控制数据m与相位寄存器输出的累加相位数据相加，并将结果送相位寄存器输入端。
Nc divider design: an adder counter, loading the initial count value, have different frequency output signal of the overflow.
数控分频器设计：对于一个加法计数器，装载不同的计数初始值时，会有不同频率的溢出输出信号。
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