The Design And Implement Of Reconfigurable DDS Signal Generator Based On SOPC

Based on the detailed analysis of SOPC technology and DDS principle, an idea and adesign scheme of reconfigurable DDS signal generator based on SOPC are proposed in thepaper.The design of system hardware circuit takes Altera Corporation Cyclone series FPGAEP1C6Q240asthehardwarecore,andunifies thememory circuit,thehighspeedD/Acircuit,the LED&LCDcircuit,thekeyboardcircuit,theJTAG configurationcircuit,thepowercircuit,the analogfilter and the amplifiercircuit and so on.The circuit models of common waveandthe special-purpose wave are designed and constructed using DSP Builder, and the massivesimulations and test are done. The NiosⅡprocessor and peripheral are generated usingSOPC Builder. Taking NiosⅡIDE as the software development platform, with the Clanguageprogramming, thedesignof reconfigurableDDSsignalgenerator basedonFPGAisrealized.After the system test, each anticipated function andrequest is achieved. With strongfunction,easyoperation,andlowcost,it isverysuitablyused ineachkindoflaboratory.