Cirrus Logic EP93xx User Manual
Page 477
DS785UM1
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Copyright 2007 Cirrus Logic
Universal Serial Bus Host Controller
EP93xx User’s Guide
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USBHCISts
Address:
0x8002_0084 - Read/Write
Default:
0x0000_0000
Definition:
Host Controller Interface. Some status bits reporting from USB host controller
to software.
Bit Descriptions:
RSVD:
Reserved. Unknown During Read.
MBA:
Host controller buffer access indication. When asserted, it
indicates that currently host controller is accessing data
buffer. It is a status bit reporting to software and software
does not need to take any action.
MSN:
Host controller new frame. Software does not need to take
any action because it is a status about a new frame that is
generated.
RWU:
Host controller remote wakeup. Software action when this
bit is asserted is implementation specific. It is a status bit
reporting a transition of internal state.
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RSVD
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0
RSVD
RWU
MSN
MBA