82371FB Datasheet, PDF (58/122 Pages) Intel Corporation – 82371FB (PIIX) AND 82371SB (PIIX3) PCI ISA IDE XCELERATOR

82371FB (PIIX) AND 82371SB (PIIX3)
E
2.4.11. INTRPINTERRUPT PIN (Function 2) (PIIX3)
Address Offset:
Default Value:
Attribute:
3Dh
04h
Read only
This register indicates which PCI interrupt pin is used for the Universal Serial Bus module interrupt. The USB
interrupt is internally ORed to the interrupt controller with the PIRQD# signal.
Bit
7:3
2:0
Description
Reserved.
Serial Bus Module Interrupt Routing. This field is hardwired to 100b to select PIRQD#.
2.4.12. SBRNUMSERIAL BUS RELEASE NUMBER (Function 2) (PIIX3)
Address Offset:
Default Value:
Attribute:
60h
00h
Read only
This register contains the release of the Universal Serial Bus Specification with which this Universal Serial
Bus Host Controller module is compliant.
Bit
7:0
Description
Serial Bus Specification Release Number. All other combinations are reserved.
Bits[7:0] Release Number
00h
Pre-release 1.0
10h
Release 1.0
2.4.13. MSTATMISCELLANEOUS STATUS REGISTER (Function 2) (PIIX3)
Address Offset:
Default Value:
Attribute:
6A−6Bh
01h
Read/Write
This 16-bit register provides miscellaneous control and status for the USB function..
Bit
Description
15:1 Reserved
0
USB Clock Selection. 1=48 MHz. 0=24 MHz.
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