Design for FPGA Realizes DDS Control Circuit

To realize a signal device, frequency scope in 1 Hz to 100 kHz, frequency step 1 Hz hereinafter, the technologies both single chip and EDA were adopted. Adopting programmable logic device FPGA in EDA, MAXPLUS Ⅱ 10.0 software, based on VHDL and principle chart combining, direct digital synthesize(DDS) control circuit design was realized. With high density, high speed and strong field programmable ability, it has some advantages of adjusting easy, modify convenient and high dependability using EDA technique. So combining DUS technique and single chip can realize producing signal equipment in convenient, flexible and accurate.