
NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 456 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
UART n Modem Status Register (UAn_MSR)
Register
Offset
R/W
Description
Reset Value
UAn_MSR
n=0,1,2,3,4,5,6,7
,8,9,10
U0x014 R/W
UART n Modem Status Register
0x0000_0000
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
LEV_CTS
7
6
5
4
3
2
1
0
Reserved
CTS_ST
Reserved
DCTSF
Bits
Description
[31:9]
Reserved
Reserved.
[8]
LEV_CTS
CTS Trigger Level
This bit can change the CTS trigger level.
0= Low level triggered.
1= High level triggered.
[7:5]
Reserved
Reserved.
[4]
CTS_ST
CTS Pin Status (Read Only)
0 = The pin of CTS is Low.
1 = The pin of CTS is High.
[3:1]
Reserved
Reserved.
[0]
DCTSF
Detect CTS State Change Flag (Read Only)
0 = CTS input no change state.
1= CTS input has change state, and it will generate Modem interrupt to CPU when
MODEM_IEN(UA_IER [3]) is set to 1.
Note:
Software can write 1 to clear this bit to 0