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DM385 Datasheet(PDF) 269 Page - Texas Instruments |
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DM385 Datasheet(HTML) 269 Page - Texas Instruments |
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269 / 281 page  DM385, DM388 www.ti.com SPRS821D – MARCH 2013 – REVISED DECEMBER 2013 8.19 Universal Asynchronous Receiver/Transmitter (UART) The UART performs serial-to-parallel conversions on data received from a peripheral device and parallel- to-serial conversion on data received from the CPU. The device provides up to three UART peripheral interfaces, depending on the selected pin multiplexing. Each UART has the following features: • Selectable UART/IrDA (SIR/MIR)/CIR modes • Dual 64-entry FIFOs for received and transmitted data payload • Programmable and selectable transmit and receive FIFO trigger levels for DMA and interrupt generation • Baud-rate generation based upon programmable divisors N (N=1…16384) • Two DMA requests and one interrupt request to the system • Can connect to any RS-232 compliant device. UART functions include: • Baud-rate up to 3.6 Mbit/s on UART0, UART1, and UART2 • Programmable serial interfaces characteristics – 5, 6, 7, or 8-bit characters – Even, odd, or no parity-bit generation and detection – 1, 1.5, or 2 stop-bit generation – Flow control: hardware (RTS/CTS) or software (XON/XOFF) • Additional modem control functions (UART0_DTR, UART0_DSR, UART0_DCD, and UART0_RIN) for UART0 only; UART1 and UART2 do not support full-flow control signaling. IR-IrDA functions include: • Support of IrDA 1.4 slow infrared (SIR, baud-rate up to 115.2 Kbits/s), medium infrared (MIR, baud- rate up to 1.152 Mbits/s) and fast infrared (FIR baud-rate up to 4.0 Mbits/s) communications • Supports framing error, cyclic redundancy check (CRC) error, illegal symbol (FIR), and abort pattern (SIR, MIR) detection • 8-entry status FIFO (with selectable trigger levels) available to monitor frame length and frame errors. IR-CIR functions include: • Consumer infrared (CIR) remote control mode with programmable data encoding • Free data format (supports any remote control private standards) • Selectable bit rate and configurable carrier frequency. For more detailed information on the UART peripheral, see the UART/IrDA/CIR Module chapter in the device-specific Technical Reference Manual. 8.19.1 UART Peripheral Register Descriptions The UART peripheral registers are described in the device-specific Technical Reference Manual. Each register is documented as an offset from a base address for the peripheral. The base addresses for all of the peripherals are in the device memory map (see Section 2.10). Copyright © 2013, Texas Instruments Incorporated Peripheral Information and Timings 269 Submit Documentation Feedback Product Folder Links: DM385 DM388 |
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