FPGA DDS Design Based on DSP Builder

Design of DDS signal source based on DSP builder usually uses the method of combining hardware description language with schematic entry.It is very hard for designers,because they must familiar with hardware foundation and hardware design language.To solving this problem,this paper presented a new design method of direct digital frequency synthesis(DDS) based on DSP builder.The method could finish the design of the model in DSP builder,and complete modeling,simulation,system integration in Simulink.This method could greatly shorten the design period by modifying signal frequency through system parameter setting,and it did not need to program complex code.Just by using the DSP builder,designers could undertake the development work with the advantages of strong interaction and simple usage.