Datasheet

561
11011B–ATARM–21-Feb-12
SAM3N
561
11011B–ATARM–21-Feb-12
SAM3N
30.8.2 USART Mode Register
Name: US_MR
Addresses: 0x40024004 (0), 0x40028004 (1)
Access: Read-write
This register can only be written if the WPEN bit is cleared in “USART Write Protect Mode Register” on page 577.
• USART_MODE
• USCLKS: Clock Selection
• CHRL: Character Length.
31 30 29 28 27 26 25 24
– – – FILTER – MAX_ITERATION
23 22 21 20 19 18 17 16
INVDATA – DSNACK INACK OVER CLKO MODE9 MSBF/CPOL
15 14 13 12 11 10 9 8
CHMODE NBSTOP PAR SYNC/CPHA
76543210
CHRL USCLKS USART_MODE
Value Name Description
0x0 NORMAL Normal mode
0x1 RS485 RS485
0x2 HW_HANDSHAKING Hardware Handshaking
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
Value Name Description
0 5_BIT Character length is 5 bits
1 6_BIT Character length is 6 bits
2 7_BIT Character length is 7 bits
3 8_BIT Character length is 8 bits