Implementation of serial communication using UART with configurable baud rate

Abstract

Today in real world the actual applications, usually needed only a few key features of UART. Specific interface chip will cause waste of resources and increased cost. Particularly in the field of electronic design, SOC technology is recently becoming increasingly mature. This situation results in the requirement of realizing the whole system function in a single or a very few chips.Universal Asynchronous Receiver Transmitter (UART) is a kind of serial communication protocol. In parallel communication the cost as well as complexity of the system increases due to simultaneous transmission of data bits on multiple wires. Serial communication all eviates this drawback of parallel communication and emerges effectively in many applications for long distance communication as it reduces the signal distortion because of its simple structure. The UART implemented with VHDL language can be integrated into the FPGA to achieve compact, stable and reliable data transmission. This paper presents implementation of Multi UART with configurable baud rate. Also we can verify the output using LED on Alteras DE1 board.