SC2200 datasheet(293/433 Pages) NSC

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Core Logic Module (Continued)

Offset 14h-17h

HcInterruptDisable Register (R/W)

Reset Value = 00000000h

MasterInterruptEnable. Global interrupt disable. A write of 1 disables all interrupts.

OwnershipChangeEnable.

0: Ignore.

1: Disable interrupt generation due to Ownership Change.

29:7

Reserved. Read/Write 0s.

RootHubStatusChangeEnable.

0: Ignore.

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

FrameNumberOverflowEnable.

0: Ignore.

1: Disable interrupt generation due to Frame Number Overflow.

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

ResumeDetectedEnable.

0: Ignore.

1: Disable interrupt generation due to Resume Detected.

StartOfFrameEnable.

0: Ignore.

1: Disable interrupt generation due to Start of Frame.

WritebackDoneHeadEnable.

0: Ignore.

1: Disable interrupt generation due to Writeback Done Head.

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.

Table 5-42. USB_BAR+Memory Offset: USB Controller Registers (Continued)

Bit

Description

SC2200 Datasheet(PDF) 293 Page - National Semiconductor (TI)

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