adsp-2191m Analog Devices, Inc., adsp-2191m Datasheet - Page 38

• Manufacturer Part Number: adsp-2191m
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

ADSP-2191M
Universal Asynchronous Receiver-Transmitter (UART)
Port—Receive and Transmit Timing
Figure 23
The maximum baud rate is HCLK/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.
RECEIVE
TRANSMIT
UART RECEIVE
UART TRANSMIT
describes UART port receive and transmit operations.
(SAMPLE
INTERRUPT
CLOCK)
INTERNAL
INTERRUPT
HCLK
INTERNAL
RXD
TXD
WRITTEN TO
AS DATA
BUFFER
START
Figure 23. UART Port—Receive and Transmit Timing
Figure 23
DATA(5–8)
DATA(5–8)
–38–
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
REV. A