CS5535 datasheet(292/555 Pages) NSC

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Revision 0.8

USB Register Descriptions (Continued)

5.5.4.23

Host Controller Root Hub Port Status 2 (USBC_HcRhPortStatus[2])

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.

Dual Function

R/W

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.

7:5

RSVD

R/W

Reserved. Read/write 0s.

Dual Function

R/W

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.

Dual Function

R/W

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.

Dual Function

R/W

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.

Dual Function

R/W

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.

Dual Function

R/W

Read: Current Connect Status.

0: No device connected.

1: Device connected.

Note:

If DeviceRemoveable is set (not removable) this bit is

always 1.

Write: Clear Port Enable. Writing 1 a clears PortEnableStatus.

Writing a 0 has no effect.

USB Memory Offset

58h

Type

HCD:

HC:

R/W

Reset Value

00000000h

USBC_HcRhPortStatus[1] Bit Descriptions (Continued)

Bit

Name

HCD

Description

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