NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 745 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
Host Controller Control Register (HcControl)
Register
Offset
R/W
Description
Reset Value
HcControl
0x004
R/W
Host Controller Control Register
0x0000_0000
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
RWE
RWC
IR
7
6
5
4
3
2
1
0
HCFS
BLE
CLE
IE
PLE
CBSR
Bits
Description
[31:11]
Reserved
Reserved.
[10]
RWE
Remote Wakeup Connected Enable
If a remote wakeup signal is supported, this bit enables that operation. Since there is no
remote wakeup signal supported, this bit is ignored.
[9]
RWC
Remote Wakeup Connected
This bit indicated whether the HC supports a remote wakeup signal. This implementation
does not support any such signal. The bit is hard-
coded to ‘0.’
[8]
IR
Interrupt Routing
This bit is used for interrupt routing:
0 = Interrupts routed to normal interrupt mechanism (INT).
1 = Interrupts routed to SMI.
[7:6]
HCFS
Host Controller Functional State
This field sets the Host Controller state. The Controller may force a state change from
UsbSuspend to UsbResume after detecting resume signaling from a downstream port.
States are:
00 = UsbReset.
01 = UsbResume.
10 = UsbOperational.
11 = UsbSuspend.
[5]
BLE
Bulk List Enable
When set this bit enables processing of the Bulk list.
[4]
CLE
Control List Enable
When set this bit enables processing of the Control list.