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18.2.5
Register/Address Summary
OpenHCI Registers
Although USB Host Controller has a PCI interface, however the configuration cycle is not needed
to perform on it. From the point of view of CPU, the access of these registers is transparent just
like the memory access. The base address of HC registers is 0x1000B000.
HC Register Summary
Table 18.22 HC Operational Register Summary
Offset
Register
00-03
HcRevision
04-07
HcControl
08-0B
HcCommandStatus
0C-0F
HcInterruptStatus
10-13
HcInterruptEnable
14-17
HcInterruptDisable
18-1B
HcHCCA
1C-1F
HcPeriodCurrentED
20-23
HcControlHeadED
24-27
HcControlCurrentED
28-2B
HcBulkHeadED
2C-2F
HcBulkCurrentED
30-33
HcDoneHead
34-37
HcFmInterval
38-3B
HcFrameRemaining
3C-3F
HcFmNumber
40-43
HcPeriodicStart
44-47
HcLSThreshold
48-4B
HcRhDescriptorA
4C-4F
HcRhDescriptorB
50-53
HcRhStatus
54-57
HcRhPortStatus [1]
58-5C
HcRhPortStatus [2]
Summary of Contents for HD64465
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