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Register locations conform to ‘550 industry standard.

Receiver FIFO trigger points at 1, 4, 8, and 14 bytes

Built-in fractional baud rate generator covering wide range of baud rates without a need for external crystals of particular values.

Transmission FIFO control enables implementation of software (XON/XOFF) flow control on both UARTs.

LPC2144/46/48 UART1 equipped with standard modem interface signals. This