ADSP-BF531 View Datasheet(PDF) - Analog Devices

Part Name

Description

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ADSP-BF531

Blackfin® Embedded Processor

Analog Devices 

Universal Asynchronous Receiver-Transmitter

(UART) Port—Receive and Transmit Timing

Figure 26 describes UART port receive and transmit operations.

The maximum baud rate is SCLK/16. As shown in Figure 26

there is some latency between the generation internal UART

interrupts and the external data operations. These latencies are

negligible at the data transmission rates for the UART.

CLKOUT

(SAMPLE CLOCK)

ADSP-BF531/ADSP-BF532/ADSP-BF533

Rx

RECEIVE

INTERNAL

UART RECEIVE

INTERRUPT

Tx

TRANSMIT

INTERNAL

UART TRANSMIT

INTERRUPT

START

DATA[8:5]

DATA[8:5]

STOP

UART RECEIVE BIT SET BY DATA STOP;

CLEARED BY FIFO READ

STOP[2:1]

UART TRANSMIT BIT SET BY PROGRAM;

CLEARED BY WRITE TO TRANSMIT

Figure 26. UART Port—Receive and Transmit Timing

Rev. E | Page 39 of 60 | July 2007

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