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Introduction
19.1 Introduction
19.1.1 UART Mode Features
The general features of the UART/IrDA module when operating in UART mode are:
• 16C750 compatibility
• Baud rate from 300 bps up to 3.6864 Mbps
• Auto-baud between 1200 bps and 115.2 Kbps
• Software/Hardware flow control
– Programmable Xon/Xoff characters
– Programmable Auto-RTS and Auto CTS
• Programmable serial interface characteristics
– 5, 6, 7, or 8-bit characters
– Even, odd, mark (always 1), space (always 0), or no parity (non-parity bit frame) bit generation and
detection
– 1, 1.5, or 2 stop bit generation
• False start bit detection
• Line break generation and detection
• Modem control functions (CTS, RTS, DSR, DTR, RI, and DCD)
• Fully prioritized interrupt system controls
• Internal test and loopback capabilities
19.1.2 IrDA Mode Features
The general features of the UART/IrDA when operating in IrDA mode are:
• Support of IrDA 1.4 slow infrared (SIR), medium infrared (MIR) and fast infrared (FIR) communications
(very fast infrared (VFIR) is not supported)
• Frame formatting: addition of variable xBOF characters and EOF characters
• Uplink/downlink CRC generation/detection
• Asynchronous transparency (automatic insertion of break character)
• 8-entry status FIFO (with selectable trigger levels) available to monitor frame length and frame errors
• Framing error, cyclic redundancy check (CRC) error, illegal symbol (FIR), abort pattern (SIR, MIR)
detection
19.1.3 CIR Mode Features
The general features of the UART/IrDA when operating in CIR mode are:
• Support of consumer infrared (CIR) for remote control applications
• Transmit and receive
• Free data format (supports any remote control private standards)
• Selectable bit rate
• Configurable carrier frequency
• 1/2, 5/12, 1/3 or 1/4 carrier duty cycle
19.1.4 Unsupported UART Features
The following UART/IrDA module features are not supported in this device.
3447
SPRUH73H–October 2011–Revised April 2013 Universal Asynchronous Receiver/Transmitter (UART)
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