Datasheet

861
SAM9X25 [DATASHEET]
11054E–ATARM–10-Mar-2014
39.8.16 USART Channel Status Register (LIN_MODE)
Name: US_CSR (LIN_MODE)
Address: 0xF801C014 (0), 0xF8020014 (1), 0xF8024014 (2), 0xF8028014 (3)
Access: Read-only
This configuration is relevant only if USART_MODE=0xA or 0xB in “USART Mode Register” on page 844.
• 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.
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.
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).
• TXEMPTY: Transmitter Empty
0: There are characters in either US_THR or the Transmit Shift Register, or the transmitter is disabled.
1: There are no characters in US_THR, nor in the Transmit Shift Register.
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
76543210
PARE FRAME OVRE – – – TXRDY RXRDY