ADSP-BF531 Analog Devices, ADSP-BF531 Datasheet - Page 35

• Manufacturer Part Number: ADSP-BF531
• Description: Blackfin Embedded Processor
• Manufacturer: Analog Devices

Universal Asynchronous Receiver-Transmitter
(UART) Port—Receive and Transmit Timing
Figure 21
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.
TRANSMIT
RECEIVE
describes UART port receive and transmit operations.
(SAMPLE CLOCK)
RXD
UART RECEIVE
TXD
UART TRANSMIT
INTERRUPT
INTERNAL
INTERRUPT
INTERNAL
CLKOUT
START
Figure 21. UART Port—Receive and Transmit Timing
Figure 21
Rev. 0 | Page 35 of 56 | March 2004
DATA(5–8)
DATA(5–8)
ADSP-BF531/ADSP-BF532/ADSP-BF533
STOP
STOP (1–2)
UART TRANSMIT BIT SET BY PROGRAM;
UART RECEIVE BIT SET BY DATA STOP;
CLEARED BY WRITE TO TRANSMIT
CLEARED BY FIFO READ