NH82801DBSL8DE 869490 Intel, NH82801DBSL8DE 869490 Datasheet - Page 404
NH82801DBSL8DE 869490
Manufacturer Part Number
NH82801DBSL8DE 869490
Description
Manufacturer
Intel
Datasheet
1.NH82801DBSL8DE_869490.pdf
(587 pages)
Specifications of NH82801DBSL8DE 869490
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USB UHCI Controllers Registers
11.1.13
11.1.14
11.1.15
404
INTR_LN—Interrupt Line Register (USB—D29:F0/F1/F2)
Address Offset:
Default Value:
INTR_PN—Interrupt Pin Register (USB—D29:F0/F1/F2)
Address Offset:
Default Value:
USB_RELNUM—USB Release Number Register
(USB—D29:F0/F1/F2)
Address Offset:
Default Value:
Bit
7:0
Bit
7:3
2:0
Bit
7:0
Interrupt Line (INT_LN) — R/W. This data is not used by the ICH4. It is to communicate to software
the interrupt line that the interrupt pin is connected to.
Reserved
Interrupt Pin (INT_PN) — RO. The values of 01h, 02h, and 03h in function 0, 1, and 2, respectively,
indicate to software that the corresponding ICH4 UHCI USB controllers drive the INTA#, INTB#, and
INTC# PCI signals.
Note that this does not determine the mapping to the ICH4 PIRQ inputs. Function 0 will drive PIRQA.
Function 1 will drive PIRQD. Function 2 will drive PIRQC. Function 1 does not use the corresponding
mapping in order to spread the interrupts with AC97, which has historically been mapped to PIRQB.
USB Release Number — RO.
10h = Indicates that the USB controller is compliant with the USB specification, Release 1.0.
3Ch
00h
3Dh
Function 0: 01h
Function 1: 02h
Function 2: 03h
60h
10h
Description
Description
Description
Attribute:
Size:
Attribute:
Size:
Attribute:
Size:
Intel
R/W
8 bits
RO
8 bits
RO
8 bits
®
82801DB ICH4 Datasheet
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