at91rm3400 ATMEL Corporation, at91rm3400 Datasheet - Page 294
at91rm3400
Manufacturer Part Number
at91rm3400
Description
Atmel Advanced At91 Arm Microcontroller
Manufacturer
ATMEL Corporation
Datasheet
1.AT91RM3400.pdf
(461 pages)
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USART Control Register
Name:
Access Type:
• RSTRX: Reset Receiver
0 = No effect.
1 = Resets the receiver.
• RSTTX: Reset Transmitter
0 = No effect.
1 = Resets the transmitter.
• RXEN: Receiver Enable
0 = No effect.
1 = Enables the receiver, if RXDIS is 0.
• RXDIS: Receiver Disable
0 = No effect.
1 = Disables the receiver.
• TXEN: Transmitter Enable
0 = No effect.
1 = Enables the transmitter if TXDIS is 0.
• TXDIS: Transmitter Disable
0 = No effect.
1 = Disables the transmitter.
• RSTSTA: Reset Status Bits
0 = No effect.
1 = Resets the status bits PARE, FRAME, OVRE and RXBRK in the US_CSR.
• STTBRK: Start Break
0 = No effect.
1 = Starts transmission of a break after the characters present in US_THR and the Transmit Shift Register have been trans-
mitted. No effect if a break is already being transmitted.
• STPBRK: Stop Break
0 = No effect.
1 = Stops transmission of the break after a minimum of one character length and transmits a high level during 12-bit peri-
ods. No effect if no break is being transmitted.
294
RETTO
TXDIS
31
23
15
–
–
7
AT91RM3400
RSTNACK
US_CR
Write-only
TXEN
30
22
14
–
–
6
RXDIS
RSTIT
29
21
13
–
–
5
SENDA
RXEN
28
20
12
–
–
4
RTSDIS
STTTO
RSTTX
27
19
11
–
3
STPBRK
RSTRX
RTSEN
26
18
10
–
2
STTBRK
DTRDIS
25
17
–
9
1
–
1790A–ATARM–11/03
RSTSTA
DTREN
24
16
–
8
0
–
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