Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet

Product codes
ATSAMD20-XPRO
Page of 660
122
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
15.8.9 APBB Mask
Name:
APBBMASK
Offset:
0x1C
Reset:
0x0000001F
Property:
Write-Protected
z
Bits 31:4 – Reserved
These bits are unused and reserved for future use. For compatibility with future devices, always write these bits to 
zero when this register is written. These bits will always return zero when read.
z
Bits 3:0 – PORT, NVMCTRL, DSU, PAC1: APB Clock Enable
For any bit:
0: The APBB clock for the corresponding module is stopped.
1: The APBB clock for the corresponding module is enabled.
Bit
31
30
29
28
27
26
25
24
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
0
0
0
0
0
Bit
23
22
21
20
19
18
17
16
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
0
0
0
0
0
Bit
7
6
5
4
3
2
1
0
PORT
NVMCTRL
DSU
PAC1
Access
R
R
R
R
R/W
R/W
R/W
R/W
Reset
0
0
0
1
1
1
1
1