Case Study: Comparing Behavioural with RTL Synthesis in the Development of a Programmable Digital Filter using VHDL

Sacker, M., Williams, A.C. and Brown, A.D. (2000) Case Study: Comparing Behavioural with RTL Synthesis in the Development of a Programmable Digital Filter using VHDL. pp. 53-59 .

Abstract

This paper details a project to develop a simple digital filter on an FPGA, using both RTL synthesis, and a behavioural synthesis tool: MOODS. The aim of the project was to compare and contrast the different approaches and to explore their relative strengths and weaknesses. The language used throughout the project was VHDL. A further goal was to illustrate some of the principal features of the MOODS behavioural synthesis system, and show how an automated tool can address many of the issues in the design industry. The project shows how, although using RTL synthesis can produce a slightly smaller implementation, the behavioural approach provides a substantial reduction in development time, and furthermore, enables the generation of many alternative implementations from a single description.

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