Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
381
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
22.8.4 Data Direction Toggle
This register allows the user to toggle the direction of one or more I/O pins, without doing a read-modify-write operation.
Changes in this register will also be reflected in the Data Direction (DIR), Data Direction Set (DIRSET) and Data Direction
Clear (DIRCLR) registers.
Changes in this register will also be reflected in the Data Direction (DIR), Data Direction Set (DIRSET) and Data Direction
Clear (DIRCLR) registers.
Name:
DIRTGL
Offset:
0x0C+x*0x80 [x=0..2]
Reset:
0x00000000
Property:
Write-Protected
z
Bits 31:0 – DIRTGL[31:0]: Port Data Direction Toggle
0: The I/O pin direction is cleared.
1: The I/O pin direction is set.
Writing a zero to a bit has no effect.
Writing a one to a bit will toggle the corresponding bit in the DIR register, which reverses the direction of the I/O
pin.
0: The I/O pin direction is cleared.
1: The I/O pin direction is set.
Writing a zero to a bit has no effect.
Writing a one to a bit will toggle the corresponding bit in the DIR register, which reverses the direction of the I/O
pin.
Bit
31
30
29
28
27
26
25
24
DIRTGL[31:24]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
DIRTGL[23:16]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
DIRTGL[15:8]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
DIRTGL[7:0]
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0