Datasheet

12 Universal Asynchronous Receivers/Transmitters
(UARTs)
Each Stellaris
®
Universal Asynchronous Receiver/Transmitter (UART) has the following features:
■ Two fully programmable 16C550-type UARTs with IrDA support
■ Separate 16x8 transmit (TX) and receive (RX) FIFOs to reduce CPU interrupt service loading
■ Programmable baud-rate generator allowing speeds up to 3.125 Mbps
■ Programmable FIFO length, including 1-byte deep operation providing conventional
double-buffered interface
■ FIFO trigger levels of 1/8, 1/4, 1/2, 3/4, and 7/8
■ Standard asynchronous communication bits for start, stop, and parity
■ Line-break generation and detection
■ Fully programmable serial interface characteristics
– 5, 6, 7, or 8 data bits
– Even, odd, stick, or no-parity bit generation/detection
– 1 or 2 stop bit generation
■ IrDA serial-IR (SIR) encoder/decoder providing
– Programmable use of IrDA Serial Infrared (SIR) or UART input/output
– Support of IrDA SIR encoder/decoder functions for data rates up to 115.2 Kbps half-duplex
– Support of normal 3/16 and low-power (1.41-2.23 μs) bit durations
– Programmable internal clock generator enabling division of reference clock by 1 to 256 for
low-power mode bit duration
June 18, 2012434
Texas Instruments-Production Data
Universal Asynchronous Receivers/Transmitters (UARTs)
NRND: Not recommended for new designs.