Freescale Semiconductor MPC5200B - Manual (Page 428)

Host Control (HC) Operational Registers
MPC5200B Users Guide, Rev. 1
Freescale Semiconductor 12-25
28 POCI PortOverCurrentIndicator (read)—bit is only valid when root hub is configured in such a way
that overcurrent conditions are reported on a per-port basis.
If per-port overcurrent reporting is not supported, this bit is set to 0.
If cleared, all power operations are normal for this port.
If set, an overcurrent condition exists on this port. This bit always reflects the overcurrent input
signal
0 = No overcurrent condition.
1 = Overcurrent condition detected.
ClearSuspendStatus (write)
• Writing 1 causes HC to initiate a resume.
• Writing 0 has no effect.
A resume is initiated only if PSS is set.
29 PSS PortSuspendStatus (read)—bit indicates port is suspended or in resume sequence. It is set
by a SetSuspendState write and cleared when PortSuspendStatusChange is set at the end
of the resume interval.
This bit cannot be set if CCS. This bit is cleared when:
• PortResetStatusChange is set at the end of the port reset, or
• when HC is placed in the USBRESUME state.
If an upstream resume is in progress, it should propagate to the HC.
0 = Port is not suspended
1 = Port is suspended
SetPortSuspend (write)
• Writing 1 causes HC to set PSS bit.
• Writing 0 has no effect.
If CurrentConnectStatus is cleared, this write does not set PSS. Instead it sets
ConnectStatusChange. This notifies the driver an attempt was made to suspend a
disconnected port.
Bits Name Description