Cirrus Logic EP93xx - Manual (Page 458)

11-18 DS785UM1
Copyright 2007 Cirrus Logic
Universal Serial Bus Host Controller
EP93xx User’s Guide
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FNO: FrameNumberOverflow. This bit is set when the MSB of
HcFmNumber (bit 15) changes value, from 0 to 1 or from 1
to 0, and after HccaFrameNumber has been updated.
RHSC: RootHubStatusChange. This bit is set when the content of
HcRhStatus or the content of any of
HcRhPortStatus[NumberofDownstreamPort] has changed.
OC: OwnershipChange. This bit is set by HC when HCD sets
the OwnershipChangeRequest field in
HcCommandStatus. This event, when unmasked, will
always generate a System Management Interrupt (SMI)
immediately. This bit is tied to 0b when the SMI pin is not
implemented.
HcInterruptEnable
Address:
0x8002_0010
Default:
0x0000_0000
Definition:
Enables interrupt sources.
Bit Descriptions:
RSVD: Reserved. Unknown During Read.
SO: SchedulingOverrun. Enable interrupt generation due to
Scheduling Overrun.
WDH: WritebackDoneHead. Enable interrupt generation due to
HcDoneHead Writeback.
SF: StartofFrame. Enable interrupt generation due to Start of
Frame.
RD: ResumeDetected. Enable interrupt generation due to
Resume Detect.
UE: UnrecoverableError. Enable interrupt generation due to
Unrecoverable Error.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
MIE OC RSVD
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RSVD RHSC FNO UE RD SF WDH SO