The Assessment and Analysis About the Superiority of VHDL Language on FPGA Design and Development

Abstract

This paper is based on the effect that VHDL language on FPGA design and development, and we design the DDS module of FPGA by using the methods of designing. By research and analyse the The design of DDS module based on FPGA, we learn more about FPGA, visually and concretely. Also, We put forward the MidFilter based on VHDL language. The experiments show that the method can reduce deviation and improve the accuracy of the design. In recent years, integrated circuit and its design and manufacturing tools have been developed rapidly. The development of the CPLD(Complex Programmable Logic Device)and the FPGA (Field Programmable Gate Array)results in great changes of electronic design technology(1,2,3). Because the FPGA program has short development cycle, low cost, high stability and the modified logic function, it's popular with the EDA(Electronic Design Automation) engineer. Then the need of electronic products based on FPGA is increasing. However, with the development of integrated circuit design technology and the enlargement of the design scale of the integrated circuit, the description methods of logic diagram and Boolean equation hardware become more and more complicated.(4,5) So there is a desire of a higher level modern design method and modern test method to describe hardware circuit. The VHDL is the core of high-level design of digital system, and it is the key technology of new methods to accomplish digital system design. With the rapid development of Programmable Logic Device on speed and integration level, an increasing number of digital signal processing system can be accomplished by Programmable Logic Device. The digital filter is frequently applied by digital signal processing system. What's more, it is used to eliminate high frequency and cut down noise resulted from original( or input ) sample data, and then get the needed output. This article puts forward a few optimized methods that design FPGA device using the VHDL. Using the technology of the parallel processing and assembly line of FPGA, the video image acquisition and processing system take up less system resources, and the processing speed is very high. Therefore, it has perfect practical value and application prospect.