Usart Rs485 Control Register - Rs485Cr - Holtek HT32F12345 User Manual

32-Bit Arm ® Cortex ® -M3 MCU
HT32F12345
USART RS485 Control Register – RS485CR
This register is used to control the RS485 mode of USART.
Offset : 0x01C
Reset value: 0x0000_0000
31
Type/Reset
23
Type/Reset
15
Type/Reset
7
Type/Reset
Bits Field
[15:8] ADDMATCH RS485 Auto Address Match value
[2] RSAAD
[1] RSNMM
[0] TXENP
Rev. 1.10
30 29 28
22 21 20
14 13 12
6 5 4
Reserved
Descriptions
The field contains the address match value for the RS485 auto address detection
operation mode.
RS485 Auto Address Detection Operation Mode Control
0: Disable
1: Enable
RS485 Normal Multi-drop Operation Mode Control
0: Disable
1: Enable
USART RTS/TXE Pin Polarity
0: RTS/TXE is active high in the RS485 transmission mode
1: RTS/TXE is active low in the RS485 transmission mode
451 of 590
27 26
Reserved
19 18
Reserved
11 10
ADDMATCH
RW 0
3 2
RSAAD
RW 0 RW
25 24
17 16
9 8
1 0
RSNMM TXENP
0 RW 0
November 28, 2018