HD6417727BP160CV Datasheet, PDF (808/1098 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/ SH7700 Series

Section 24 USB HOST Module
24.2.21 HcRhStatus
HcRhStatus Register (H'04000450)
The HcRhStatus register is divided into two parts. The lower word of a long word indicates the
hub status bits and the upper word indicates the hub status change bit. Reserved bits should be set
to 0.
Register: HcRhStatus
Bits
Reset R/W
31
0
W
30–18 0h
—
17
0
R/W
16
0
R/W
15
0
R/W
14–2
0h
—
Offset: 50–53
Description
ClearRemoteWakeupEnable (CRWE)
Writing a 1 to this bit clears DeviceRemoteWakeupEnable.
Writing a 0 has no effect.
Reserved. Read/Write 0's
OverCurrentIndicatorChange (OCIC)
This bit is set when OverCurrentIndicator changes. Writing a 1
clears this bit. Writing a 0 has no effect.
(read) LocalPowerStatusChange (LPSC)
The root hub does not support the local power status function.
Therefore, this bit is always read 0.
(write) SetGlobalPower
This bit is written to 1 to power on (clears the PortPowerStatus
bit) all ports in global power mode (PowerSwitchingMode = 0).
This bit sets the PortPowerStatus bit only to the port in which
the PortPowerControlMask bit is not set in power mode at each
port. When 0 is written to, this bit is not cleared.
(read) DeviceRemoteWakeupEnable (DRWE)
This bit enables the ConnectStatusChange bit as a resume
event and generates the state transition from UsbSuspend to
UsbResume and ResumeDetected interrupt.
0: ConnectStatusChange is not the remote wakeup event
(initial value)
1: ConnectStatusChange is the remote wakeup event.
(write) SetRemoteWakeupEnable
Writing a 1 sets DeviceRemoteWakeupEnable. Writing a 0 has
no effect.
Reserved.
Rev.6.00 Mar. 27, 2009 Page 750 of 1036
REJ09B0254-0600