Atmel Xplained Pro Evaluation Kit for the ATSAMD21J18A Microcontroller ATSAMD21-XPRO ATSAMD21-XPRO Data Sheet
Product codes
ATSAMD21-XPRO
770
Atmel | SMART SAM D21 [DATASHEET]
Atmel-42181C–SAM-D21_Datasheet–07/2014
31.8.2.3 Status
Name:
STATUS
Offset:
0x0C
Reset:
0x0000
Property:
-
z
Bits 7:6 – LINESTATE[1:0]: USB Line State Status
These bits define the current line state DP/DM as showed in
These bits define the current line state DP/DM as showed in
z
Bits 5:4 – 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.
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 3:2 – SPEED [1:0]: Speed Status
These bits define the current speed used of the device
.
These bits define the current speed used of the device
.
z
Bits 1:0 – 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.
Bit
7
6
5
4
3
2
1
0
LINESTATE[1:0]
SPEED[1:0]
Access
R
R
R
R
R
R
R
R
Reset
0
1
0
0
0
1
0
0
Table 31-12. USB Line State Status
LINESTATE[1:0]
USB Line Status
0x0
SE0/RESET
0x1
FS-J or LS-K State
0x2
FS-K or LS-J State
Table 31-13. Speed Status
SPEED[1:0]
SPEED STATUS
0x0
Low-speed mode
0x1
Full-speed mode
0x2
Reserved
0x3
Reserved