HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 852
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Section 24
24.3.21 Hc Rh Status Register (USBHRS)
USBHRS 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.
Rev. 3.00 Jan. 18, 2008 Page 790 of 1458
REJ09B0033-0300
Bit
31
30 to 18
17
16
15
14 to 2
Bit Name
CRWE
OCIC
LPSC
DRWE
USB Host Controller (USBH)
Initial
Value
0
All 0
0
0
0
All 0
R/W
W
R
R/W
R/W
R/W
R
Description
Clear Remote Wakeup Enable
Writing a 1 to this bit clears DeviceRemoteWakeupEnable.
Writing 0 to this bit has no effect.
Reserved
These bits are always read as 0. The write value should
always be 0.
Over Current Indicator Change
This bit is set when the OCI bit changes. Writing 1 clears
this bit. Writing 0 has no effect.
(Read) Local Power Status Change
The root hub does not support the local power status
function. Therefore, this bit is always read as 0.
(Write) Set Global Power
This bit is written to 1 to power on (clears the PPS bit in
USBHRPS) all ports in global power mode (PSM bit in
USBHRDA = 0). This bit sets the PPS bit only to the port
in which the PPCM bit is not set in power mode at each
port. When a 0 is written to, this bit is not cleared.
(Read) Device Remote Wakeup Enable
This bit enables the CSC bit as a resume event and
generates the state transition from USBHSUSPEND1 to
USBRESUME and ResumeDetected interrupt.
0: ConnectStatusChange is not the remote wakeup event
1: ConnectStatusChange is the remote wakeup event.
(Write) Set Remote Wakeup Enable
Writing a 1 sets DeviceRemoteWakeupEnable. Writing a 0
has no effect.
Reserved
These bits are always read as 0. The write value should
always be 0.
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