The UART to SPI IP Core include a simple command parser that can be used to access an internal bus of SPI via a UART interface. This IP can be used understand the SPI transaction protocol. The internal bus is designed with address bus of 16 bits and data bus of 8 bits. The core implements a very basic UART transmit & receive blocks which share a common baud rate generator and a command parser. The parser supports text mode of command parsing. Text mode commands are designed to be used with hyper terminal software and enable easy access to the internal bus.