参数资料
型号: EVAL-ADUC7122QSPZ
厂商: Analog Devices Inc
文件页数: 53/96页
文件大小: 0K
描述: BOARD EVALUATION FOR ADUC7122
设计资源: EVAL-ADUC7122 Schematic
ADUC7122 Gerber Files
ADUC7122 BOM
标准包装: 1
系列: MicroConverter® ADuC7xxx
类型: MCU
适用于相关产品: ADUC7122
所含物品:
ADuC7122
Rev. 0 | Page 57 of 96
UART Status Register 0
Name:
COMSTA0
Address:
0xFFFF0814
Default Value:
0x60
Access:
Read only
Function:
This 8-bit read-only register reflects the current status on the UART.
Table 97. COMSTA0 MMR Bit Designations
Bit
Name
Description
7
Reserved.
6
TEMT
COMTX and shift register empty status bit.
Set automatically if COMTX and the shift register are empty. This bit indicates that the data has
been transmitted, that is, no more data is present in the shift register.
Cleared automatically when writing to COMTX.
5
THRE
COMTX empty status bit.
Set automatically if COMTX is empty. COMTX can be written as soon as this bit is set, the previous
data might not have been transmitted yet and can still be present in the shift register.
Cleared automatically when writing to COMTX.
4
BI
Break indicator.
Set when SIN is held low for more than the maximum word length.
Cleared automatically.
3
FE
Framing error.
Set when the stop bit is invalid.
Cleared automatically.
2
PE
Parity error.
Set when a parity error occurs.
Cleared automatically.
1
OE
Overrun error.
Set automatically if data are overwritten before being read.
Cleared automatically.
0
DR
Data ready.
Set automatically when COMRX is full.
Cleared by reading COMRX.
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