Overview Of The Uart - Fujitsu FR60 Hardware Manual

CHAPTER 13 UART

13.1 Overview of the UART

The UART is a serial I/O port used to perform asynchronous (start-stop
synchronization) communication and CLK synchronous communication.
The MB91301 series has three UART channels.
■ Features of the UART
The UART has the following features:
• Full-duplex double buffer
• Either asynchronous (start-stop synchronization) or CLK synchronous communication can be
selected.
• Multiprocessor mode is supported.
• Fully programmable baud rate: An arbitrary baud rate can be set using a built-in timer.
• An external clock can be used to set a baud rate.
• Error detection functions (parity, framing, overrun)
• The transfer signal is an NRZ code.
• DMA transfer is started as the result of an interrupt.
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(See "CHAPTER 8 U-TIMER".)