參數(shù)資料
型號: ADSP-2191
廠商: Analog Devices, Inc.
元件分類: 數(shù)字信號處理
英文描述: DSP Microcomputer
中文描述: DSP微機(jī)
文件頁數(shù): 39/52頁
文件大?。?/td> 1873K
代理商: ADSP-2191
–39–
REV. 0
ADSP-2191M
Universal Asynchronous Receiver-Transmitter (UART) Port—Receive and Transmit Timing
Figure 23
describes UART port receive and transmit operations. The maximum baud rate is HCLK/16. As shown in
Figure 23
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.
Figure 23. UART Port—Receive and Transmit Timing
RXD
DATA(5–8)
INTERNAL
UART RECEIVE
INTERRUPT
UART RECEIVE BIT SET BY DATA STOP;
CLEARED BY FIFO READ
HCLK
(SAMPLE
CLOCK)
TXD
DATA(5–8)
STOP (1–2)
INTERNAL
UART TRANSMIT
INTERRUPT
UART TRANSMIT BIT SET BY PROGRAM;
CLEARED BY WRITE TO TRANSMIT
START
STOP
TRANSMIT
RECEIVE
AS DATA
WRITTEN TO
BUFFER
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