2 usart mode register – Rainbow Electronics AT91CAP9S250A User Manual
Page 562
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562
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
35.7.2
USART Mode Register
Name:
US_MR
Access Type:
Read/Write
• USART_MODE
• 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
–
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
USART_MODE
Mode of the USART
0
0
0
0
Normal
0
0
0
1
RS485
0
0
1
0
Hardware Handshaking
0
0
1
1
Reserved
0
1
0
0
IS07816 Protocol: T = 0
0
1
0
1
Reserved
0
1
1
0
IS07816 Protocol: T = 1
0
1
1
1
Reserved
1
0
0
0
IrDA
1
1
x
x
Reserved
USCLKS
Selected Clock
0
0
MCK
0
1
MCK/DIV (DIV = 8)
1
0
Reserved
1
1
SCK
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