Atmel ARM-Based Evaluation Kit for SAM4S16C, 32-Bit ARM® Cortex® Microcontroller ATSAM4S-WPIR-RD ATSAM4S-WPIR-RD Data Sheet
Product codes
ATSAM4S-WPIR-RD
SAM4S Series [DATASHEET]
Atmel-11100G-ATARM-SAM4S-Datasheet_27-May-14
798
36.8.3 USART Mode Register
Name:
US_MR
Address:
0x40024004 (0), 0x40028004 (1)
Access:
Read/Write
This register can only be written if the WPEN bit is cleared in “USART Write Protection Mode Register” on page 827.
For SPI configuration, see “USART Mode Register (SPI_MODE)” on page 802.
For SPI configuration, see “USART Mode Register (SPI_MODE)” on page 802.
• USART_MODE: USART Mode of Operation
The PDC transfers are supported in all USART modes of operation.
• USCLKS: Clock Selection
31
30
29
28
27
26
25
24
ONEBIT
MODSYNC
MAN
FILTER
–
MAX_ITERATION
23
22
21
20
19
18
17
16
INVDATA
VAR_SYNC
DSNACK
INACK
OVER
CLKO
MODE9
MSBF
15
14
13
12
11
10
9
8
CHMODE
NBSTOP
PAR
SYNC
7
6
5
4
3
2
1
0
CHRL
USCLKS
USART_MODE
Value
Name
Description
0x0
NORMAL
Normal mode
0x1
RS485
RS485
0x2
HW_HANDSHAKING
Hardware Handshaking
0x3
MODEM
Modem
0x4
IS07816_T_0
IS07816 Protocol: T = 0
0x6
IS07816_T_1
IS07816 Protocol: T = 1
0x8
IRDA
IrDA
0xE
SPI_MASTER
SPI master
0xF
SPI_SLAVE
SPI Slave
Value
Name
Description
0
MCK
master Clock MCK is selected
1
DIV
Internal Clock Divided MCK/DIV (DIV=8) is selected
3
SCK
Serial Clock SLK is selected