參數(shù)資料
型號: ST20GP1
英文描述: MAX 7000 CPLD 256 MC 208-PQFP
中文描述: GPS處理器
文件頁數(shù): 72/116頁
文件大小: 1107K
代理商: ST20GP1
ST20-GP1
72/116
13 UART interface (ASC)
The UART interface, also referred to as the Asynchronous Serial Controller (ASC), provides serial
communication between the ST20 device and other microcontrollers, microprocessors or external
peripherals.
The ASC supports full-duplex asynchronous communication, where both the transmitter and the
receiver use the same data frame format and the same baud rate. Data is transmitted on the
transmit data output pin (
TXD
) and received on the receive data input pin (
RXD
).
Figure 13.1 Block diagram of the ASC
CPU
Transmit buffer
Receive buffer
Internal bus
Transmit shift
Receive shift
TXD
MUX
1
0
Sampling
RXD
Transmitter
empty interrupt
Error
interrupt
Receive buffer
full interrupt
Serial port control
Shift clock
Clock
LoopBack
Mode
StopBits
Baud rate timer
Run
Reload register
RxEnable
ParityOdd
4 -input OR
gate
ASC_interrupt
Transmit buffer
empty interrupt
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