Design of programmable digital signal generator based on Nios II
Anwei Chen · Modern Electronics Technique · 2012
Direct Digital Synthesis(DDS) technology plays an important role in the field of modern communication.A new method that Nios Ⅱ CPU soft nucleus of Altera company is embedded in FPGA to control the high performance DDS AD9858 is introduced in this paper.The circuit digram and softwore control flow are presented in detail.A new design of signal source is introduced.It has many advantages,such as high frequency resolution,continuous phase output,visual interface and multi-waveform output,so it has a high practical value.