NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 674 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
USB Operational Register (USBD_OPER)
Register
Offset
R/W
Description
Reset Value
USBD_OPER
0x018 R/W
USB Operational Register
0x0000_0002
31
30
29
28
27
26
25
24
Reserved
23
22
21
20
19
18
17
16
Reserved
15
14
13
12
11
10
9
8
Reserved
7
6
5
4
3
2
1
0
Reserved
CURSPD
HISPDEN
RESUMEEN
Bits
Description
[31:3]
Reserved
Reserved.
[2]
CURSPD
USB Current Speed
0 = The device has settled in Full Speed.
1 = The USB device controller has settled in High-speed.
[1]
HISPDEN
USB High-speed
0 = The USB device controller to suppress the chirp-sequence during reset protocol,
thereby allowing the USB device controller to settle in full-speed, even though it is
connected to a USB2.0 Host.
1 = The USB device controller to initiate a chirp-sequence during reset protocol.
[0]
RESUMEEN
Generate Resume
0 = No Resume sequence to be initiated to the host.
1 = A Resume sequence to be initiated to the host if device remote wakeup is enabled.
This bit is self-clearing.