LM3S9781_15 Datasheet, PDF (989/1271 Pages) Texas Instruments – Stellaris LM3S9781 Microcontroller

Stellaris^® LM3S9781 Microcontroller
OTG A /
Host
Register 2: USB Power (USBPOWER), offset 0x001
USBPOWER is an 8-bit register used for controlling SUSPEND and RESUME signaling and some
basic operational aspects of the USB controller.
OTG B /
Device
OTG A / Host Mode
USB Power (USBPOWER)
Base 0x4005.0000
Offset 0x001
Type R/W, reset 0x20
7
6
5
4
reserved
Type RO
RO
RO
RO
Reset
0
0
1
0
3
2
1
0
RESET RESUME SUSPEND PWRDNPHY
R/W
R/W R/W1S R/W
0
0
0
0
Bit/Field
7:4
3
Name
reserved
RESET
Type
RO
R/W
Reset
0x2
0
Description
Software should not rely on the value of a reserved bit. To provide
compatibility with future products, the value of a reserved bit should be
preserved across a read-modify-write operation.
RESET Signaling
Value Description
1 Enables RESET signaling on the bus.
0 Ends RESET signaling on the bus.
2
RESUME
R/W
0
RESUME Signaling
Value Description
1 Enables RESUME signaling when the Device is in SUSPEND
mode.
0 Ends RESUME signaling on the bus.
This bit must be cleared by software 20 ms after being set.
1
SUSPEND
R/W1S
0
SUSPEND Mode
Value Description
1 Enables SUSPEND mode.
0 No effect.
July 03, 2014
989
Texas Instruments-Production Data