Atmel SAM4L Xplained Pro Starter Kit Atmel ATSAM4L-XSTK ATSAM4L-XSTK Hoja De Datos

Atmel

Los códigos de productos

ATSAM4L-XSTK

622

42023E–SAM–07/2013

ATSAM4L8/L4/L2

24.7.1

Control Register

Name:

CR

Access Type:

Write-only

Offset:

0x00

Reset Value:

0x00000000

• LINWKUP: Send LIN Wakeup Signal

Writing a zero to this bit has no effect.

Writing a one to this bit will send a wakeup signal on the LIN bus.

• LINABT: Abort LIN Transmission

Writing a zero to this bit has no effect.

Writing a one to this bit will abort the current LIN transmission.

• RTSDIS/RCS: Request to Send Disable/Release SPI Chip Select

Writing a zero to this bit has no effect.

Writing a one to this bit when USART is not in SPI master mode drives RTS high.

Writing a one to this bit when USART is in SPI master mode releases NSS (RTS pin).

• RTSEN/FCS: Request to Send Enable/Force SPI Chip Select

Writing a zero to this bit has no effect.

Writing a one to this bit when USART is not in SPI master mode drives RTS low.

Writing a one to this bit when USART is in SPI master mode forces NSS (RTS pin) low, even if USART is not transmitting, in

order to address SPI slave devices supporting the CSAAT Mode (Chip Select Active After Transfer).

• DTRDIS: Data Terminal Ready Disable

Writing a zero to this bit has no effect.

Writing a one to this bit drives DTR high.

• DTREN: Data Terminal Ready Enable

Writing a zero to this bit has no effect.

Writing a one to this bit drives DTR low.

• RETTO: Rearm Time-out

Writing a zero to this bit has no effect.

Writing a one to this bit reloads the time-out counter and clears CSR.TIMEOUT.

• RSTNACK: Reset Non Acknowledge

Writing a zero to this bit has no effect.

Writing a one to this bit clears CSR.NACK.

• RSTIT: Reset Iterations

Writing a zero to this bit has no effect.

Writing a one to this bit clears CSR.ITER if ISO7816 is enabled (MR.MODE is 0x4 or 0x6)

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

LINWKUP

LINABT

RTSDIS/RCS

RTSEN/FCS

DTRDIS–

DTREN–

15

14

13

12

11

10

9

8

RETTO

RSTNACK

RSTIT

SENDA

STTTO

STPBRK

STTBRK

RSTSTA

7

6

5

4

3

2

1

0

TXDIS

TXEN

RXDIS

RXEN

RSTTX

RSTRX

–

–