Texas Instruments OMAP5912 Reference Manual page 1337

Table 22. HC Root Hub Status Register (HCRHSTATUS)
Bit Name
31 CRWE
30:18 Reserved
17 OCIC
16 LPSC
15 DRWE
14:2 Reserved
SPRU761A
Description
Clear remote wake-up enable
Write of 0 has no effect.
Write of 1 clears the device remote wake-up enable bit.
Reserved
Overcurrent indication change
This bit is automatically set when the overcurrent indicator bit
changes.
Write of 0 has no effect.
Write of 1 clears this bit.
This bit has no relationship to the OTG controller register bits
that relate to VBUS. System software can update this register
to simplify host controller driver and/or OTG driver coding.
Local power status change
This bit defaults to 0 because the root hub does not support
the local power status feature.
Write of 0 has no effect.
Write of 1 sets the port power status bits for all ports if power
switching mode is 0. A write of 1 sets port power status bits
for ports with their corresponding port power control mask
bits cleared if power switching mode is 1.
This bit has no relationship to the OTG controller register bits
that relate to VBUS. System software can update this register
to simplify host controller driver and/or OTG driver coding.
Device remote wake-up enable
When 1, this bit enables a connect status change event to be
treated as a resume event, which causes a transition from
USB suspend to USB resume state and sets the resume
detected interrupt status bit.
When 0, connect status change events do not cause a
transition from USB suspend to USB resume state and the
resume detected interrupt is not changed.
Write of 0 has no effect.
Write of 1 sets the device remote wake-up enable bit.
Reserved
USB Host Controller
Type
R/W
R/W
R/W
R/W
Universal Serial Bus (USB)
Reset
0
0
0
0
45