AMD Geode SC1201 - Manual (Page 287)

AMD Geode™ SC1200/SC1201 Processor Data Book 287
Core Logic Module - USB Controller Registers - PCIUSB 32579B
Offset 10h-13h HcInterruptEnable Register (R/W) Reset Value = 00000000h
31 MasterInterruptEnable. This bit is a global interrupt enable. A write of 1 allows interrupts to be enabled via the specific
enable bits listed above.
30 OwnershipChangeEnable.
0: Ignore.
1: Enable interrupt generation due to Ownership Change.
29:7 Reserved. Read/Write 0s.
6 RootHubStatusChangeEnable.
0: Ignore.
1: Enable interrupt generation due to Root Hub Status Change.
5 FrameNumberOverflowEnable.
0: Ignore.
1: Enable interrupt generation due to Frame Number Overflow.
4 UnrecoverableErrorEnable. This event is not implemented. All writes to this bit are ignored.
3 ResumeDetectedEnable.
0: Ignore.
1: Enable interrupt generation due to Resume Detected.
2 StartOfFrameEnable.
0: Ignore.
1: Enable interrupt generation due to Start of Frame.
1 WritebackDoneHeadEnable.
0: Ignore.
1: Enable interrupt generation due to Writeback Done Head.
0 SchedulingOverrunEnable.
0: Ignore.
1: Enable interrupt generation due to Scheduling Overrun.
Note: Writing a 1 to a bit in this register sets the corresponding bit, while writing a 0 leaves the bit unchanged.
Offset 14h-17h HcInterruptDisable Register (R/W) Reset Value = 00000000h
31 MasterInterruptEnable. Global interrupt disable. A write of 1 disables all interrupts.
30 OwnershipChangeEnable.
0: Ignore.
1: Disable interrupt generation due to Ownership Change.
29:7 Reserved. Read/Write 0s.
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.
Table 6-42. USB_BAR+Memory Offset: USB Controller Registers (Continued)
Bit Description