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)
Copyright © 2011–2013, Texas Instruments Incorporated