cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 292

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

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USB Register Descriptions
5.5.4.23
USB Memory Offset
Type
Reset Value
This register is reset by the UsbReset state.
Note: There must be a Device Connect detected by the host to be able to set other bits.
Bit
7:5
8
4
3
2
1
0
Host Controller Root Hub Port Status 2 (USBC_HcRhPortStatus[2])
Name
Dual Function
RSVD
Dual Function
Dual Function
Dual Function
Dual Function
Dual Function
HCD:
HC:
58h
R/W
R/W
00000000h
USBC_HcRhPortStatus[1] Bit Descriptions (Continued)
HCD
R/W
R/W
R/W
R/W
R/W
R/W
R/W
(Continued)
R/W
R/W
R/W
R/W
R/W
R/W
R/W
HC
Description
Read: Port Power Status. This bit reflects the power state of the
port regardless of the power switching mode.
0: Port power is off.
1: Port power is on.
Note: If NoPowerSwitching is set, this bit is always read as 1.
Write: Set Port Power. Writing a 1 sets PortPowerStatus. Writing
a 0 has no effect.
Reserved. Read/write 0s.
Read: Port Reset Status.
0: Port reset signal is not active.
1: Port reset signal is active.
Write: Set Port Reset. Writing a 1 sets PortResetStatus. Writing
a 0 has no effect.
Read: Port Over Current Indicator. This bit reflects the state of
the OVRCUR pin dedicated to this port. This field is only valid if
NoOverCurrentProtection is cleared and OverCurrentProtection-
Mode is set.
0: No over-current condition.
1: Over-current condition.
Write: Clear Port Suspend. Writing a 1 initiates the selective
resume sequence for the port. Writing a 0 has no effect.
Read: Port Suspend Status.
0: Port is not suspended.
1: Port is selectively suspended.
Write: Set Port Suspend. Writing a 1 sets PortSuspendStatus.
Writing a 0 has no effect.
Read: Port Enable Status.
0: Port disabled.
1: Port enabled.
Write: Set PortEnable. Writing a 1 sets PortEnableStatus. Writ-
ing a 0 has no effect.
Read: Current Connect Status.
0: No device connected.
1: Device connected.
Note: If DeviceRemoveable is set (not removable) this bit is
Write: Clear Port Enable. Writing 1 a clears PortEnableStatus.
Writing a 0 has no effect.
292
always 1.
Revision 0.8