Register Descriptions; Uart Data Register - Urdr - Holtek HT32F12345 User Manual

32-Bit Arm ® Cortex ® -M3 MCU
HT32F12345

Register Descriptions

UART Data Register – URDR
The register is used to access the UART transmitted and received data.
Offset : 0x000
Reset value: 0x0000_0000
31
Type/Reset
23
Type/Reset
15
Type/Reset
7
Type/Reset RW 0 RW
Bits Field
[8:0] DB
Rev. 1.10
30 29 28
22 21 20
14 13 12
Reserved
6 5
0 RW 0 RW
Descriptions
By reading this register, the UART will return a 7, 8 and 9-bit received data. The
DB field bit 8 is valid for 9-bit mode only and is fixed at 0 for the 8-bit mode. For the
7-bits mode, the DB [6:0] contains the available bits.
By writing to this register, the UART will send out 7, 8 or 9-bit transmitted data. The
DB field bit 8 is valid for the 9-bit mode only and will be ignored for the 8-bit mode.
For the 7-bit mode, the DB [6:0] contains the available bits.
460 of 590
27 26
Reserved
19 18
Reserved
11 10
4 3 2
DB
0 RW 0 RW
25 24
17 16
9 8
DB
RW 0
1 0
0 RW 0 RW 0
November 28, 2018