Atmel Xplained Pro Evaluation Kit ATSAMD20-XPRO ATSAMD20-XPRO Data Sheet
Product codes
ATSAMD20-XPRO
54
Atmel | SMART SAM D20 [DATASHEET]
Atmel-42129K–SAM-D20_datasheet–06/2014
12.13.3 Status B
Name:
STATUSB
Offset:
0x0002
Reset:
0x1X
Property:
Write-Protected
z
Bits 7:5 – 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.
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
Bit 4 – HPE: Hot-Plugging Enable
Writing a zero to this bit has no effect.
Writing a zero to this bit has no effect.
Writing a one to this bit has no effect.
This bit is set when Hot-Plugging is enabled.
This bit is cleared when Hot-Plugging is disabled. This is the case when the SWCLK function is changed. Only a
power-reset or a external reset can set it again.
power-reset or a external reset can set it again.
z
Bits 3:2 – DCCDx [x=1..0]: Debug Communication Channel x Dirty
Writing a zero to this bit has no effect.
Writing a zero to this bit has no effect.
Writing a one to this bit has no effect.
This bit is set when DCCx is written.
This bit is cleared when DCCx is read.
z
Bit 1 – DBGPRES: Debugger Present
Writing a zero to this bit has no effect.
Writing a zero to this bit has no effect.
Writing a one to this bit has no effect.
This bit is set when a debugger probe is detected.
This bit is never cleared.
z
Bit 0 – PROT: Protected
Writing a zero to this bit has no effect.
Writing a zero to this bit has no effect.
Writing a one to this bit has no effect.
This bit is set at powerup when the device is protected.
This bit is never cleared.
Bit
7
6
5
4
3
2
1
0
HPE
DCCD1
DCCD0
DBGPRES
PROT
Access
R
R
R
R
R
R
R
R
Reset
0
0
0
1
0
0
X
X