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M451
May. 4, 2018
Page
626
of
1006
Rev.2.08
M4
51
S
E
RI
E
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CH
NICA
L RE
F
E
R
E
NC
E
M
A
NU
A
L
UART MODEM Control Register (UART_MODEM)
Register
Offset
R/W
Description
Reset Value
UART_MODEM
x=0,1,2,3
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
RTSSTS
Reserved
RTSACTLV
Reserved
7
6
5
4
3
2
1
0
Reserved
RTS
Reserved
Bits
Description
[31:14]
Reserved
Reserved.
[13]
RTSSTS
nRTS Pin Status (Read Only)
This bit mirror from nRTS pin output of voltage logic status.
0 = nRTS pin output is low level voltage logic state.
1 = nRTS pin output is high level voltage logic state.
[12:10]
Reserved
Reserved.
[9]
RTSACTLV
nRTS Pin Active Level
This bit defines the active level state of nRTS pin output.
0 =n RTS pin output is high level active.
1 = nRTS pin output is low level active. (Default)
Note1:
Refer to Figure 6.13-10 and Figure 6.13-11 for UART function mode.
Note2:
Refer to Figure 6.13-21 and Figure 6.13-22 for RS-485 function mode.
[8:2]
Reserved
Reserved.
[1]
RTS
nRTS (Request-to-send) Signal Control
This bit is direct control internal nRTS signal active or not, and then drive the nRTS pin
output with RTSACTLV bit configuration.
0 = nRTS signal is active.
1 = nRTS signal is inactive.
Note1:
This nRTS signal control bit is not effective when nRTS auto-flow control is
enabled in UART function mode.
Note2:
This nRTS signal control bit is not effective when RS-485 auto direction mode
(AUD) is enabled in RS-485 function mode.
[0]
Reserved
Reserved.
Содержание ARM Cortex NuMicro M451 Series
Страница 301: ...M451 May 4 2018 Page 301 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL...
Страница 324: ...M451 May 4 2018 Page 324 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL Figure 6 4 18 Checksum Calculation Flow...
Страница 355: ...M451 May 4 2018 Page 355 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 2 0 Reserved Reserved...
Страница 625: ...M451 May 4 2018 Page 625 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL 00 5 bits 01 6 bits 10 7 bits 11 8 bits...
Страница 721: ...M451 May 4 2018 Page 721 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL the SCL line 1 0 Reserved Reserved...
Страница 1001: ...M451 May 4 2018 Page 1001 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 10x10x1 4 mm footprint 2 0 mm 9 2...
Страница 1002: ...M451 May 4 2018 Page 1002 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 64L 7x7x1 4 mm footprint 2 0 mm 9 3...
Страница 1003: ...M451 May 4 2018 Page 1003 of 1006 Rev 2 08 M451 SERIES TECHNICAL REFERENCE MANUAL LQFP 48L 7x7x1 4mm footprint 2 0mm 9 4...