參數(shù)資料
型號(hào)： ADUC702X
廠商： Analog Devices, Inc.
元件分類： 32位微控制器
英文描述： Precision Analog Microcontroller 12-bit Analog I/O, ARM7TDMI MCU
中文描述： 精密模擬微控制器的12位模擬I / O，ARM7TDMI的微控制器
文件頁數(shù)： 54/80頁
文件大?。?/td> 840K
代理商： ADUC702X
ADuC702x Series
Preliminary Technical Data
Rev. PrB | Page 54 of 80
Table 38: COMSTA0 MMR Bit Descriptions
Bit
7
6
Name
TEMT
Description
Reserved
COMTX empty status bit
Set automatically if COMTX is empty
Cleared automatically when writing to COMTX
COMTX and COMRX empty
Set automatically if COMTX and COMRX are empty
Cleared automatically when one of the register receives data
Break error
Set when SIN is held low for more than the maximum word length
Cleared automatically
Framing error
Set when invalid stop bit
Cleared automatically
Parity error
Set when a parity error occurs
Cleared automatically
Overrun error
Set automatically if data are overwrite before been read
Cleared automatically
Data ready
Set automatically when COMRX is full
Cleared by reading COMRX
5
THRE
4
BI
3
FE
2
PE
1
OE
0
DR
Table 39: COMIEN0 MMR Bit Descriptions
Bit
7-4
3
Name
EDSSI
Description
Reserved
Modem status interrupt enable bit
Set
by user to enable generation of an interrupt if any of COMSTA1[3:0] are set
Cleared
by user
RX status interrupt enable bit
Set by user to enable generation of an interrupt if any of COMSTA0[3:0] are set
Cleared by user
Enable transmit buffer empty interrupt
Set by user to enable interrupt when buffer is empty during a transmission
Cleared by user
Enable receive buffer full interrupt
Set by user to enable interrupt when buffer is full during a reception
Cleared by user
2
ELSI
1
ETBEI
0
ERBFI
Table 40: COMIID0 MMR Bit Descriptions
Definition
Bit 2-1
Status bits
00
11
10
01
00
Bit 0
NINT
1
0
0
0
0
Priority
Clearing operation
1
2
3
4
No interrupt
Receive line status interrupt
Receive buffer full interrupt
Transmit buffer empty interrupt
Modem status interrupt
Read COMSTA0
Read COMRX
Write data to COMTX or read COMIID0
Read COMSTA1 register
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