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• Transmitter data buffer at or below watermark
• Transmission complete
• Receiver data buffer at or above watermark
• Idle receiver input
• Receiver data buffer overrun
• Receiver data buffer underflow
• Transmit data buffer overflow
• Noise error
• Framing error
• Parity error
• Active edge on receive pin
• LIN break detect
• Receiver framing error detection
• Hardware parity generation and checking
• 1/16 bit-time noise detection
• DMA interface
48.1.2 Modes of operation
The UART functions in the same way in all the normal modes.
It has the following two low power modes:
• Wait mode
• Stop mode
48.1.2.1 Run mode
This is the normal mode of operation.
Chapter 48 Universal Asynchronous Receiver/Transmitter (UART)
K20 Sub-Family Reference Manual, Rev. 1.1, Dec 2012
Freescale Semiconductor, Inc.
Preliminary
1267
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