For example, 9600 baud means 9600 bits per second. The baud rate is the rate at which the data is transmitted. In order to receive your data correctly, the transmitter and receiver must agree on the baud rate. If you do not sample the data at the right time, you might see the wrong data. In any asynchronous interface, the first thing you need to know is when in time you should sample (look at) the data. When it arrives without a clock, it is called asynchronous. When it arrives with a clock, it is call synchronous. Data can arrive by itself or it can arrive with a clock. Have you considered how you might sample data with an FPGA? Think about data coming into your FPGA.
UART, Serial Port, RS-232 Interface Code in both VHDL and Verilog for FPGA Implementationĭo you know how a UART works? If not, first brush up on the basics of UARTs before continuing on.
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