Atmel Evaluation Kit AT91SAM9M10-G45-EK AT91SAM9M10-G45-EK Data Sheet

 383

SAM9M10 [DATASHEET]

6355F–ATARM–12-Mar-13

 SPI_SR

0xFFFA4010 (0), 0xFFFA8010 (1)

Read-only

  

0 = No data has been received since the last read of SPI_RDR

1 = Data has been received and the received data has been transferred from the serializer to SPI_RDR since the last read
of SPI_RDR.

0 = Data has been written to SPI_TDR and not yet transferred to the serializer.

1 = The last data written in the Transmit Data Register has been transferred to the serializer. 

TDRE equals zero when the SPI is disabled or at reset. The SPI enable command sets this bit to one.

0 = No Mode Fault has been detected since the last read of SPI_SR.

1 = A Mode Fault occurred since the last read of the SPI_SR.

0 = No overrun has been detected since the last read of SPI_SR.

1 = An overrun has occurred since the last read of SPI_SR.

An overrun occurs when SPI_RDR is loaded at least twice from the serializer since the last read of the SPI_RDR.

.

 or SPI_RNCR

.

0 = The Transmit Counter Register has not reached 0 since the last write in SPI_TCR

.

 has a value other than 0.

1 = Both SPI_RCR

 and SPI_RNCR

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

SPIENS

15

14

13

12

11

10

9

8

–

–

–

–

–

–

TXEMPTY

NSSR

7

6

5

4

3

2

1

0

–

–

–

–

OVRES

MODF

TDRE

RDRF