Cirrus Logic EP93 Series User Manual page 477

USBHCISts
31 30 29 28
15 14 13 12
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:
MBA:
MSN:
RWU:
DS785UM1
27 26 25 24
RSVD
11 10 9 8
RSVD
Reserved. Unknown During Read.
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.
Host controller new frame. Software does not need to take
any action because it is a status about a new frame that is
generated.
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.
Copyright 2007 Cirrus Logic
Universal Serial Bus Host Controller
23 22 21 20
7 6 5 4
EP93xx User's Guide
19 18 17 16
3 2 1 0
RWU MSN MBA
11-37
11