Design implementation of UART and SPI in single FGPA

Abstract

The UART(Universal Asynchronous Receiver and transmitter) controller is the key component of the serial communications subsystem of a computer. The UART takes bytes of data and transmits the individual bits in a sequential fashion. SPI is a common technology used nowadays for communication with peripheral devices where we want to transfer data speedily and with in real time constraints. In the existing work data acquisition system for underground has been designed for counters triggered by surface detectors and they have used UART and SPI protocol for the communication with dedicated processor. In this paper we have used Xilinx 12.4i and SPARTAN 3E FPGA to implement the whole system. The hyper terminal is used to check the UART protocol and 12 bit DAC MCP4922 used for check SPI protocol. The proposed work can provides both protocol effectively for the wireless serial communication. These serial protocols mainly used in Zigbee wireless technology.