ADSP-BF531/ADSP-BF532/ADSP-BF533
Universal Asynchronous Receiver-Transmitter
(UART) Port—Receive and Transmit Timing
describes UART port receive and transmit operations.
The maximum baud rate is SCLK/16. As shown in
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)
Rx
DATA[8:5]
STOP
RECEIVE
INTERNAL
UART RECEIVE
INTERRUPT
UART RECEIVE BIT SET BY DATA STOP;
CLEARED BY FIFO READ
START
Tx
DATA[8:5]
STOP[2:1]
TRANSMIT
INTERNAL
UART TRANSMIT
INTERRUPT
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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