664
/
838
Nations Technologies Inc.
Tel
:
+86-755-86309900
:
Address: Nations Tower, #109 Baoshen Road, Hi-tech Park North.
Nanshan District, Shenzhen, 518057, P.R.China
Offset
Register
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
00Ch
USART_CTRL1
Reserved
UE
N
WL
W
UM
P
C
E
N
P
S
E
L
P
E
IE
N
T
XD
E
IE
N
T
XC
IE
N
R
XD
NE
IE
N
IDL
E
IE
N
T
XE
N
R
XE
N
R
C
VW
U
S
DB
R
K
Reset Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
010h
USART_CTRL2
Reserved
L
INM
E
N
STPB
[1:0]
C
L
KE
N
C
L
KPO
L
C
L
KPHA
L
B
C
L
K
R
es
er
ve
d
L
INB
DI
E
N
L
INB
DL
R
es
er
ve
d
ADDR[3:0]
Reset Value
0
0
0
0
0
0
0
0
0
0
0
0
0
014h
USART_CTRL3
Reserved
C
T
S
IE
N
C
T
S
E
N
R
T
S
E
N
DM
AT
XE
N
DM
AR
XE
N
S
C
M
E
N
S
C
NA
C
K
HD
M
E
N
IR
DA
L
P
IR
DA
M
E
N
E
R
R
IE
N
Reset Value
0
0
0
0
0
0
0
0
0
0
0
018h
USART_GTP
Reserved
GTV[7:0]
PSCV[7:0]
Reset Value
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
23.7.2
USART Status register (USART_STS)
Address offset : 0x00
Reset value : 0x0000 00C0
Bit field
Name
Description
31:10
Reserved
Reserved, the reset value must be maintained
9
CTSF
CTS flag
If USART_CTRL3.CTSEN bit is set, this bit is set by hardware when the nCTS input
changes. If USART_CTRL3.CTSIEN bit is set, an interrupt will be generated.
This bit is cleared by software.
0:nCTS status line has not changed.
1:nCTS status line changes.
Note: This bit is invalid for UART4/5/6/7.
8
LINBDF
LIN break detection flag.
If USART_CTRL2.LINMEN bit is set, this bit is set by hardware when LIN
disconnection is detected. If USART_CTRL2.LINBDIEN bit is set, an interrupt will be
generated.
This bit is cleared by software.
0: LIN break character not detected.
1: LIN break character detected.
7
TXDE
The Transmit data register empty.