NuMicro® NUC029LEE/NUC029SEE
32-bit Arm
®
Cortex
®
-M0 Microcontroller
Aug, 2018
Page
381
of
497
Rev 1.00
N
U
MICRO
®
N
UC02
9L
E
E
/N
UC029
S
E
E
T
E
CHN
ICA
L R
E
F
E
R
E
NC
E
M
A
NU
A
L
UART Alternate Control/Status Register (UA_ALT_CSR)
Register
Offset
R/W
Description
Reset Value
UA_ALT_CSR
x=0,1,2
U0x2C R/W
UART Alternate Control/Status Register
0x0000_000C
31
30
29
28
27
26
25
24
ADDR_MATCH
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
RS485_ADD_
EN
Reserved
RS485_AUD
RS485_AAD RS485_NMM
7
6
5
4
3
2
1
0
LIN_TX_EN
LIN_RX_EN
Reserved
LIN_BKFL
Bits
Description
[31:24]
ADDR_MATCH
Address Match Value Register
This field contains the RS-485 address match values.
Note:
This field is used for RS-485 auto address detection mode.
[23:16]
Reserved
Reserved.
[15]
RS485_ADD_EN
RS-485 Address Detection Enable Bit
This bit is used to enable RS-485 Address Detection mode.
0 = Address detection mode Disabled.
1 = Address detection mode Enabled.
Note:
This bit is used for RS-485 any operation mode.
[14:11]
Reserved
Reserved.
[10]
RS485_AUD
RS-485 Auto Direction Mode (AUD)
0 = RS-485 Auto Direction Operation mode (AUO) Disabled.
1 = RS-485 Auto Direction Operation mode (AUO) Enabled.
Note:
It can be active with RS-485_AAD or RS-485_NMM operation mode.
[9]
RS485_AAD
RS-485 Auto Address Detection Operation Mode (AAD)
0 = RS-485 Auto Address Detection Operation mode (AAD) Disabled.
1 = RS-485 Auto Address Detection Operation mode (AAD) Enabled.
Note:
It cannot be active with RS-485_NMM operation mode.
[8]
RS485_NMM
RS-485 Normal Multi-Drop Operation Mode (NMM)
0 = RS-485 Normal Multi-drop Operation mode (NMM) Disabled.
1 = RS-485 Normal Multi-drop Operation mode (NMM) Enabled.
Note:
It cannot be active with RS-485_AAD operation mode.
[7]
LIN_TX_EN
LIN TX Break Mode Enable Bit