Core Logic Module - USB Controller Registers - PCIUSB

32581C

 

 

Table 6-42. USB_BAR+Memory Offset: USB Controller Registers (Continued)

Bit

 

Description

 

 

 

 

 

 

 

6

 

RootHubStatusChangeEnable.

 

 

 

 

0:

Ignore.

 

 

 

 

1: Disable interrupt generation due to Root Hub Status Change.

 

 

 

 

 

 

5

 

FrameNumberOverflowEnable.

 

 

 

 

0:

Ignore.

 

 

 

 

1: Disable interrupt generation due to Frame Number Overflow.

 

 

 

 

4

 

UnrecoverableErrorEnable. This event is not implemented. All writes to this bit will be ignored.

 

 

 

 

 

3

 

ResumeDetectedEnable.

 

 

 

 

0:

Ignore.

 

 

 

 

1: Disable interrupt generation due to Resume Detected.

 

 

 

 

 

 

2

 

StartOfFrameEnable.

 

 

 

 

0:

Ignore.

 

 

 

 

1: Disable interrupt generation due to Start of Frame.

 

 

 

 

 

 

1

 

WritebackDoneHeadEnable.

 

 

 

 

0:

Ignore.

 

 

 

 

1: Disable interrupt generation due to Writeback Done Head.

 

 

 

 

 

 

0

 

SchedulingOverrunEnable.

 

 

 

 

0:

Ignore.

 

 

 

 

1: Disable interrupt generation due to Scheduling Overrun.

 

 

 

 

Note:

Writing a 1 to a bit in this register clears the corresponding bit, while writing a 0 to a bit leaves the bit unchanged.

Offset 18h-1Bh

HcHCCA Register (R/W)

Reset Value = 00000000h

 

 

 

 

31:8

 

HCCA. Pointer to HCCA base address.

 

 

 

 

 

 

7:0

 

Reserved. Read/Write 0s.

 

 

 

 

 

 

Offset 1Ch-1Fh

HcPeriodCurrentED Register (R/W)

Reset Value = 00000000h

 

 

 

 

31:4

 

PeriodCurrentED. Pointer to the current Periodic List ED.

 

 

 

 

 

 

3:0

 

Reserved. Read/Write 0s.

 

 

 

 

 

 

 

Offset 20h-23h

 

HcControlHeadED Register (R/W)

Reset Value = 00000000h

 

 

 

 

31:4

 

ControlHeadED. Pointer to the Control List Head ED.

 

 

 

 

 

 

3:0

 

Reserved. Read/Write 0s.

 

 

Offset 24h-27h

 

HcControlCurrentED Register (R/W)

Reset Value = 00000000h

 

 

 

 

31:4

 

ControlCurrentED. Pointer to the current Control List ED.

 

 

 

 

 

 

3:0

 

Reserved. Read/Write 0s.

 

 

 

 

 

 

Offset 28h-2Bh

HcBulkHeadED Register (R/W)

Reset Value = 00000000h

 

 

 

 

31:4

 

BulkHeadED. Pointer to the Bulk List Head ED.

 

 

 

 

 

 

3:0

 

Reserved. Read/Write 0s.

 

 

 

 

 

 

Offset 2Ch-2Fh

HcBulkCurrentED Register (R/W)

Reset Value = 00000000h

 

 

 

 

31:4

 

BulkCurrentED. Pointer to the current Bulk List ED.

 

 

 

 

 

 

3:0

 

Reserved. Read/Write 0s.

 

 

Offset 30h-33h

 

HcDoneHead Register (R/W)

Reset Value = 00000000h

 

 

 

 

31:4

 

DoneHead. Pointer to the current Done List Head ED.

 

 

 

 

 

 

3:0

 

Reserved. Read/Write 0s.

 

 

 

 

 

 

 

 

 

 

 

 

AMD Geode™ SC3200 Processor Data Book

 

287

Page 287
Image 287
AMD SC3200 manual Offset 28h-2Bh, 287