NuMicro® NUC029LEE/NUC029SEE
32-bit Arm
®
Cortex
®
-M0 Microcontroller
Aug, 2018
Page
369
of
497
Rev 1.00
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UC02
9L
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UC029
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CHN
ICA
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UART MODEM Control Register (UA_MCR) (Not Available in UART2 Channel)
Register
Offset
R/W
Description
Reset Value
UA_MCR
x=0,1
U0x10
R/W
UART Modem Control Register
0x0000_0200
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
RTS_ST
Reserved
LEV_RTS
Reserved
7
6
5
4
3
2
1
0
Reserved
RTS
Reserved
Bits
Description
[31:14]
Reserved
Reserved.
[13]
RTS_ST
RTS Pin State (Read Only) (Not Available In UART2 Channel)
This bit mirror from RTS pin output of voltage logic status.
0 = RTS pin output is low level voltage logic state.
1 = RTS pin output is high level voltage logic state.
[12:10]
Reserved
Reserved.
[9]
LEV_RTS
RTS Pin Active Level (Not Available In UART2 Channel)
This bit defines the active level state of RTS pin output.
0 = RTS pin output is high level active.
1 = RTS pin output is low level active.
Note1:
Refer to Figure 6.13-6 and Figure 6.13-7 for UART function mode.
Note2:
Refer to Figure 6.13-17 And Figure 6.13-18 for RS-485 function mode.
[8:2]
Reserved
Reserved.
[1]
RTS
RTS (Request-To-Send) Signal Control (Not Available In UART2 Channel)
This bit is direct control internal RTS signal active or not, and then drive the RTS pin
output with LEV_RTS bit configuration.
0 = RTS signal is active.
1 = RTS signal is inactive.
Note1:
This RTS signal control bit is not effective when RTS auto-flow control is enabled
in UART function mode.
Note2:
This RTS signal control bit is not effective when RS-485 auto direction mode
(AUD) is enabled in RS-485 function mode.
[0]
Reserved
Reserved.