Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Scheda Tecnica
Codici prodotto
AT91SAM9N12-EK
824
SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]
11063K–ATARM–05-Nov-13
40.8.16 USART Channel Status Register (LIN_MODE)
Name:
US_CSR (LIN_MODE)
Addresses:
0xF801C014 (0), 0xF8020014 (1), 0xF8024014 (2), 0xF8028014 (3)
Access:
Read-only
This configuration is relevant only if USART_MODE = 0xA or 0xB in
.
• RXRDY: Receiver Ready
0: No complete character has been received since the last read of US_RHR or the receiver is disabled. If characters were being
received when the receiver was disabled, RXRDY changes to 1 when the receiver is enabled.
received when the receiver was disabled, RXRDY changes to 1 when the receiver is enabled.
1: At least one complete character has been received and US_RHR has not yet been read.
• TXRDY: Transmitter Ready
0: A character is in the US_THR waiting to be transferred to the Transmit Shift Register or the transmitter is disabled. As soon as
the transmitter is enabled, TXRDY becomes 1.
the transmitter is enabled, TXRDY becomes 1.
1: There is no character in the US_THR.
• OVRE: Overrun Error
0: No overrun error has occurred since the last RSTSTA.
1: At least one overrun error has occurred since the last RSTSTA.
• FRAME: Framing Error
0: No stop bit has been detected low since the last RSTSTA.
1: At least one stop bit has been detected low since the last RSTSTA.
• PARE: Parity Error
0: No parity error has been detected since the last RSTSTA.
1: At least one parity error has been detected since the last RSTSTA.
• TIMEOUT: Receiver Time-out
0: There has not been a time-out since the last Start Time-out command (STTTO in US_CR) or the Time-out Register is 0.
1: There has been a time-out since the last Start Time-out command (STTTO in US_CR).
31
30
29
28
27
26
25
24
–
–
LINSNRE
LINCE
LINIPE
LINISFE
LINBE
–
23
22
21
20
19
18
17
16
LINBLS
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
LINTC
LINID
LINBK
–
–
–
TXEMPTY
TIMEOUT
7
6
5
4
3
2
1
0
PARE
FRAME
OVRE
–
–
–
TXRDY
RXRDY