参数资料
型号: EVAL-ADUC7121QSPZ
厂商: Analog Devices Inc
文件页数: 55/96页
文件大小: 0K
描述: BOARD EVALUATION FOR ADUC7121
设计资源: ADUC7121 Gerber Files
ADUC7121 Schematic
标准包装: 1
系列: MicroConverter® ADuC7xxx
类型: MCU
适用于相关产品: ADUC7121
所含物品: 板,CD
Data Sheet
ADuC7121
Rev. B | Page 59 of 96
Table 83. COMCON0 MMR Bit Designations
Bit
Name
Description
7
DLAB
Divisor latch access.
Set by the user to enable access to COMDIV0 and COMDIV1 registers.
Cleared by the user to disable access to COMDIV0 and COMDIV1 and enable access to COMRX,
COMTX, and COMIEN0.
6
BRK
Set break.
Set by the user to force the transmit pin (SOUT) to 0.
Cleared to operate in normal mode.
5
SP
Stick parity. Set by the user to force parity to defined values.
1 if EPS = 1 and PEN = 1.
0 if EPS = 0 and PEN = 1.
4
EPS
Even parity select bit.
Set for even parity.
Cleared for odd parity.
3
PEN
Parity enable bit.
Set by the user to transmit and check the parity bit.
Cleared by the user for no parity transmission or checking.
2
STOP
Stop bit.
Set by the user to transmit 1.5 stop bits if the word length is five bits, or two stop bits if the word
length is six, seven, or eight bits. The receiver checks the first stop bit only, regardless of the
number of stop bits selected.
Cleared by the user to generate one stop bit in the transmitted data.
1 to 0
WLS
Word length select.
00 = five bits.
01 = six bits.
10 = seven bits.
11 = eight bits.
UART Control Register 1
This 8-bit register controls the operation of the UART in
conjunction with COMCON0.
Name:
COMCON1
Address:
0xFFFF0810
Default value: 0x00
Access:
Read and write
Table 84. COMCON1 MMR Bit Designations
Bit
Name
Description
7:5
Reserved bits. Not used.
4
LOOPBACK
Loopback. Set by the user to enable
loopback mode. In loopback mode, SOUT is
forced high.
3:2
Reserved bits. Not used.
1
RTS
Request to send.
Set by the user to force the RTS output to 0.
Cleared by the user to force the RTS output
to 1.
0
DTR
Data terminal ready.
Set by the user to force the DTR output to 0.
Cleared by the user to force the DTR output
to 1.
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