Features Of The Uart - Fujitsu FR60 Hardware Manual

14.1.1

Features of the UART

This section describes the features and registers of the UART, and also provides a block
diagram of the UART.
■ Features
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. (See the item about the U-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.
• UARTs ch0 to ch2 can use an interrupt to start DMA transfer (UARTs ch3 and ch4 cannot start DMA
transfer).
• The DMAC interrupt source is cleared if the DRCL register is written to.
387