TMS320DM647 datasheet(112/167 Pages) TI

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6.13 Universal Asynchronous Receiver/Transmitter (UART)

6.13.1 UART Peripheral Register Description(s)

TMS320DM647/TMS320DM648

Digital Media Processor

SPRS372A – MAY 2007 – REVISED JUNE 2007

The DM647/DM648 devices have a UART peripheral. The UART has the following features:

• 16-byte storage space for both the transmitter and receiver FIFOs

• 1, 4, 8, or 14 byte selectable receiver FIFO trigger level for autoflow control and DMA

• DMA signaling capability for both received and transmitted data

• Programmable auto-rts and auto-cts for autoflow control

• Frequency pre-scale values from 1 to 65, 535 to generate appropriate baud rates

• Prioritized interrupts

• Programmable serial data formats

–

5, 6, 7, or 8-bit characters

–

Even, odd, or no parity bit generation and detection

–

1, 1.5, or 2 stop bit generation

• False start bit detection

• Line break generation and detection

• Internal diagnostic capabilities

–

Loopback controls for communications link fault isolation

–

Break, parity, overrun, and framing error simulation

• Modem control functions (CTS, RTS).

The UART registers are listed in Table 6-44 .

Table 6-44. UART Register Descriptions

HEX ADDRESS RANGE

ACRONYM

0x0204 7000

RBR

UART Receiver Buffer Register (Read Only)

0x0204 7000

THR

UART Transmitter Holding Register (Write Only)

0x0204 7004

IER

UART Interrupt Enable Register

0x0204 7008

IIR

UART Interrupt Identification Register (Read Only)

0x0204 7008

FCR

UART FIFO Control Register (Write Only)

0x0204 700C

LCR

UART Line Control Register

0x0204 7010

MCR

UART Modem Control Register

0x0204 7014

LSR

UART Line Status Register

0x0204 7018

Reserved

0x0204 701C

Reserved

0x0204 7020

DLL

UART Divisor Latch (LSB)

0x0204 7024

DLH

UART Divisor Latch (MSB)

0x0204 7028

PID1

Peripheral Identification Register 1

0x0204 702C

PID2

Peripheral Identification Register 2

0x0204 7030

PWREMU_MGMT

UART Power and Emulation Management Register

0x0204 7034 - 0x0204 73FF

Reserved

Peripheral Information and Electrical Specifications

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