Datasheet

879
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
37.6.6 UART Status Register
Name: UART_SR
Address: 0x400E0614 (0), 0x40060614 (1)
Access: Read-only
 RXRDY: Receiver Ready
0: No character has been received since the last read of the UART_RHR, or the receiver is disabled.
1: At least one complete character has been received, transferred to UART_RHR and not yet read.
 TXRDY: Transmitter Ready
0: A character has been written to UART_THR and not yet transferred to the internal shift register, or the transmitter is
disabled.
1: There is no character written to UART_THR not yet transferred to the internal shift register.
 ENDRX: End of Receiver Transfer
0: The end of transfer signal from the receiver Peripheral Data Controller channel is inactive.
1: The end of transfer signal from the receiver Peripheral Data Controller channel is active.
 ENDTX: End of Transmitter Transfer
0: The end of transfer signal from the transmitter Peripheral Data Controller channel is inactive.
1: The end of transfer signal from the transmitter Peripheral Data Controller channel is active.
 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 framing error has occurred since the last RSTSTA.
1: At least one framing error has occurred since the last RSTSTA.
 PARE: Parity Error
0: No parity error has occurred since the last RSTSTA.
1: At least one parity error has occurred since the last RSTSTA.
31 302928 27 26 25 24
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23 22 21 20 19 18 17 16
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15 14 13 12 11 10 9 8
– – – RXBUFF TXBUFE – TXEMPTY –
76543 210
PARE FRAME OVRE ENDTX ENDRX – TXRDY RXRDY