AT91M40400-25C ATMEL Corporation, AT91M40400-25C Datasheet - Page 72

• Manufacturer Part Number: AT91M40400-25C
• Description: 16/32-bit Microcontroller, 2.7V to 3.6V Operating Range
• Manufacturer: ATMEL Corporation

USART Control Register
Name:
Access Type:
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RSTRX: Reset Receiver
0 = No effect.
1 = The receiver logic is reset.
RSTTX: Reset Transmitter
0 = No effect.
1 = The transmitter logic is reset.
RXEN: Receiver Enable
0 = No effect.
1 = The receiver is enabled if RXDIS is 0.
RXDIS: Receiver Disable
0 = No effect.
1 = The receiver is disabled.
TXEN: Transmitter Enable
0 = No effect.
1 = The transmitter is enabled if TXDIS is 0.
TXDIS: Transmitter Disable
0 = No effect.
1 = The transmitter is disabled.
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 = If break is not being transmitted, start transmission of a break after the characters present in US_THR and the
Transmit Shift Register have been transmitted.
STPBRK: Stop Break
0 = No effect.
1 = If a break is being transmitted, stop transmission of the break after a minimum of one character length and transmit
a high level during 12 bit periods.
STTTO: Start Time-out
0 = No effect.
1 = Start waiting for a character before clocking the time-out counter.
SENDA: Send Address
0 = No effect.
1 = In Multi-drop Mode only, the next character written to the US_THR is sent with the address bit set.
72
TXDIS
31
23
15
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7
TXEN
AT91M40400
30
22
14
US_CR
Write only
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6
RXDIS
29
21
13
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5
SENDA
RXEN
28
20
12
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4
STTTO
RSTTX
27
19
11
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3
STPBRK
RSTRX
26
18
10
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2
STTBRK
25
17
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9
1
RSTSTA
24
16
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8
0