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): 78/116頁
文件大小: 1107K
代理商: ST20GP1
ST20-GP1
78/116
An overall interrupt request signal (
ASC_interrupt
)
is generated from the OR of the
ErrorInterrupt
signal and the
TxEmpty
,
TxBufEmpty
and
RxBufFull
signals.
Note
: the status register cannot
be written directly by software. The reset mechanism for the status
register is described below.
The transmitter interrupt status bits (
TxEmpty
,
TxBufEmpty
) are reset when a character is written
to the transmitter buffer.
The receiver interrupt status bit (
RxBufFull
) is reset when a character is read from the receive
buffer.
The error status bits (
ParityError
,
FrameError
,
OverrunError
) are reset when a character is read
from the receive buffer.
Figure 13.4 ASC status and interrupt registers
&
&
&
&
&
&
register
register
RxBufFullIE
TxEmptyIE
TxBufEmptyIE
ParityErrorIE
FrameErrorIE
OverrunErrorIE
ASCIntEnable
ASCStatus
OR
Receive buffer
full interrupt
Transmitter
empty interrupt
Transmit buffer
empty interrupt
Error interrupt
RxBufFull
TxEmpty
TxBufEmpty
ParityError
FrameError
OverrunError
RESERVED
read 0, write 0
RESERVED
read 0, write 0
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