Atmel SAM4S-XPLD Atmel ATSAM4S-XPLD ATSAM4S-XPLD Hoja De Datos

 447

SAM4S [DATASHEET]

11100E–ATARM–24-Jul-13

PERIPH_PTCR

Write-only

0 = No effect.

1 = Enables PDC receiver channel requests if RXTDIS is not set.

When a half duplex peripheral is connected to the PDC, enabling the receiver channel requests automatically disables the trans-
mitter channel requests. It is forbidden to set both TXTEN and RXTEN for a half duplex peripheral.

0 = No effect.

1 = Disables the PDC receiver channel requests.

When a half duplex peripheral is connected to the PDC, disabling the receiver channel requests also disables the transmitter 
channel requests.

0 = No effect.

1 = Enables the PDC transmitter channel requests.

When a half duplex peripheral is connected to the PDC, it enables the transmitter channel requests only if RXTEN is not set. It is 
forbidden to set both TXTEN and RXTEN for a half duplex peripheral.

0 = No effect.

1 = Disables the PDC transmitter channel requests.

When a half duplex peripheral is connected to the PDC, disabling the transmitter channel requests disables the receiver channel 
requests.

31

30

29

28

27

26

25

24

–

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

–

15

14

13

12

11

10

9

8

–

–

–

–

–

–

TXTDIS

TXTEN

7

6

5

4

3

2

1

0

–

–

–

–

–

–

RXTDIS

RXTEN