Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105 Data Sheet
Product codes
ATEVK1105
343
AT32UC3A
26.8.3
USART Mode Register
Name:
MR
Access Type:
Read-write
Offset:
0x4
Reset Value:
-
• ONEBIT: Start Frame Delimiter Selector
0: Start Frame delimiter is COMMAND or DATA SYNC.
1: Start Frame delimiter is One Bit.
1: Start Frame delimiter is One Bit.
•
MODSYNC
: Manchester Synchronization Mode
0:The Manchester Start bit is a 0 to 1 transition
1: The Manchester Start bit is a 1 to 0 transition.
1: The Manchester Start bit is a 1 to 0 transition.
• MAN: Manchester Encoder/Decoder Enable
0: Manchester Encoder/Decoder are disabled.
1: Manchester Encoder/Decoder are enabled.
1: Manchester Encoder/Decoder are enabled.
• FILTER: Infrared Receive Line Filter
0: The USART does not filter the receive line.
1: The USART filters the receive line using a three-sample filter (1/16-bit clock) (2 over 3 majority).
1: The USART filters the receive line using a three-sample filter (1/16-bit clock) (2 over 3 majority).
• MAX_ITERATION
Defines the maximum number of iterations in mode ISO7816, protocol T= 0.
• VAR_SYNC: Variable Synchronization of Command/Data Sync Start Frame Delimiter
0: User defined configuration of command or data sync field depending on SYNC value.
1: The sync field is updated when a character is written into THR register.
1: The sync field is updated when a character is written into THR register.
• DSNACK: Disable Successive NACK
0: NACK is sent on the ISO line as soon as a parity error occurs in the received character (unless INACK is set).
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/CPOL
15
14
13
12
11
10
9
8
CHMODE
NBSTOP
PAR
SYNC/CPHA
7
6
5
4
3
2
1
0
CHRL
USCLKS
MODE
32058K
AVR32-01/12