Universal Asynchronous Receiver/transmitter - Structure

Structure

A UART usually contains the following components:

  • a clock generator, usually a multiple of the bit rate to allow sampling in the middle of a bit period.
  • input and output shift registers
  • transmit/receive control
  • read/write control logic
  • transmit/receive buffers (optional)
  • parallel data bus buffer (optional)
  • First-in, first-out (FIFO) buffer memory (optional)

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