CLEAR_REMOTE_WAKEUP_ENABLE Bit 31
W (R)
0x0
Write a 1 clears DeviceRemoteWakeupEnable. Writing a '0' has no effect.
Unused Bits 30 : 18
OVER_CURRENT_INDICATOR_CHANG Bit 17
R/W (R)
0x0
This bit is set by hardware when a change has occurred to the OverCurrentIndicator field of this register.
The HCD clears this bit by writing a 1 . Writing a '0' has no effect.
LOCAL_POWER_STARTUS_CHANGE Bit 16
R/W (R)
0x0
Local Power Startus Change - read
The Root Hub does not support the local power status features, thus, thisbit is always read as '0'.
SetGlobalPower - write
In global power mode (PowerSwitchingMode=0), this bit is written to 1 to turn on power to all ports (clear PortPowerStatus).
In per-port power mode, it sets PortPowerStatus only on ports whose PortPowerControlMask bit is not set.
Writing a '0' has no effect.
DEVICE_REMOTE_WAKEUP_ENABLE Bit 15
R/W (R)
0x0
Device Remote Wakeup Enable - read
This bit enables a ConnectStatusChange bit as a resume event, causing a USBS_USPEND to USB_RESUME state transition and setting the ResumeDetected interrupt.
0: ConnectStatusChange is not a remote wakeup event.
1: ConnectStatusChange is a remote wakeup event.
SetRemoteWakeupEnable - write
Writing a 1 sets DeviceRemoveWakeupEnable. Writing a '0' has no effect.
Unused Bits 14 : 2
OVER_CURRENT_INDICATOR Bit 1
R (R/W)
0x0
This bit reports overcurrent conditions when the global reporting is implemented.
When set, an overcurrent condition exists. When cleared, all power operations are normal.
If per-port overcurrent protection is implemented this bit is always '0'
LOCAL_POWER_STATUS Bit 0
R/W (R)
0x0
Local Power Status - Read
When read, this bit returns the LocalPowerStatus of the Root Hub.
The Root Hub does not support the local power status feature; thus, this bit is always read as '0'.
Clear Global Power - Write
When write, this bit is operated as the ClearGlobalPower.
In global power mode (PowerSwitchingMode=0), this bit is written to 1 to turn off power to all ports (clear PortPowerStatus).
In per-port power mode, it clears PortPowerStatus only on ports whose PortPowerControlMask bit is not set.
Writing a '0' has no effect.
HCD (HC)
Команда U-Boot для чтения регистра md 5200450 1 md 5310450 1 md 5311450 1
Bit fields structure
typedef union o_hcrhstatus
{
struct
{
unsigned local_power_status : 1;
unsigned over_current_indicator : 1;
unsigned unused0 : 13;
unsigned device_remote_wakeup_enable : 1;
unsigned local_power_startus_change : 1;
unsigned over_current_indicator_chang : 1;
unsigned unused1 : 13;
unsigned clear_remote_wakeup_enable : 1;
} b;
unsigned long w;
} O_HcRhStatus
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