Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK データシート

 535

SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

US_CSR

0xFFF8C014 (0), 0xFFF90014 (1), 0xFFF94014 (2), 0xFFF98014 (3)

Read-only 

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. 

0: A character is in the US_THR waiting to be transferred to the Transmit Shift Register, or an STTBRK command has been
requested, or the transmitter is disabled. As soon as the transmitter is enabled, TXRDY becomes 1.

1: There is no character in the US_THR.

0: No Break received or End of Break detected since the last RSTSTA.

1: Break Received or End of Break detected since the last RSTSTA.

0: The End of Transfer signal from the Receive PDC channel is inactive.

1: The End of Transfer signal from the Receive PDC channel is active.

0: The End of Transfer signal from the Transmit PDC channel is inactive.

1: The End of Transfer signal from the Transmit PDC channel is active.

0: No overrun error has occurred since the last RSTSTA.

1: At least one overrun error has occurred since the last RSTSTA.

31

30

29

28

27

26

25

24

–

–

LINSNRE

LINCE

LINIPE

LINISFE

LINBE

MANERR

23

22

21

20

19

18

17

16

CTS

 – 

 – 

 – 

CTSIC

 – 

 – 

 – 

15

14

13

12

11

10

9

8

LINTC

LINID

NACK/LINBK RXBUFF

TXBUFE

ITER/UNRE

TXEMPTY

TIMEOUT

7

6

5

4

3

2

1

0

PARE

FRAME

OVRE

ENDTX

ENDRX

RXBRK

TXRDY

RXRDY