参数资料
型号: EVAL-ADUC7128QSPZ
厂商: Analog Devices Inc
文件页数: 55/92页
文件大小: 0K
描述: KIT DEV FOR ADUC7128
产品培训模块: ARM7 Applications & Tools
Intro to ARM7 Core & Microconverters
设计资源: ADUC7128 Dev System Schematic
ADUC7128 Gerber Files
标准包装: 1
系列: QuickStart™ PLUS 套件
类型: MCU
适用于相关产品: ADuC7128
所含物品: 评估板、电源、缆线、软件、仿真器和说明文档
产品目录页面: 739 (CN2011-ZH PDF)
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ADuC7128/ADuC7129
Rev. 0 | Page 59 of 92
Table 80. COMxCON0 MMR Bit Designations
Bit
Value
Name
Description
7
DLAB
Divisor Latch Access.
Set by user to enable access to COMxDIV0 and COMxDIV1 registers.
Cleared by user to disable access to COMxDIV0 and COMxDIV1 and enable access to COMxRX and COMxTX.
6
BRK
Set Break.
Set by user to force SOUT to 0.
Cleared to operate in normal mode.
5
SP
Stick Parity.
Set by 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 user to transmit and check the parity bit.
Cleared by user for no parity transmission or checking.
2
STOP
Stop Bit.
Set by user to transmit 1.5 stop bits if the word length is 5 bits or 2 stop bits if the word length is 6 bits, 7 bits, or
8 bits. The receiver checks the first stop bit only, regardless of the number of stop bits selected.
Cleared by user to generate 1 stop bit in the transmitted data.
1:0
WLS
Word Length Select.
00
5 bits.
01
6 bits.
10
7 bits.
11
8 bits.
Table 81. COMxSTA0 MMR Bit Designations
Bit
Name
Description
7
RSVD
Reserved.
6
TEMT
COMxTX Empty Status Bit.
Set automatically if COMxTX is empty.
Cleared automatically when writing to COMxTX.
5
THRE
COMxTX and COMxRX Empty.
Set automatically if COMxTX and COMxRX are empty.
Cleared automatically when one of the registers receives data.
4
BI
Break Error.
Set when SIN is held low for more than the maximum word length.
Cleared automatically.
3
FE
Framing Error.
Set when stop bit invalid.
Cleared automatically.
2
PE
Parity Error.
Set when a parity error occurs.
Cleared automatically.
1
OE
Overrun Error.
Set automatically if data is overwritten before it is read.
Cleared automatically.
0
DR
Data Ready.
Set automatically when COMxRX is full.
Cleared by reading COMxRX.
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