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Intel® 460GX Chipset Software Developer’s Manual 13-5
Universal Serial Bus (USB) Configuration
13.2.9 USBBA–USB I/O Space Base Address (Function 2)
Address Offset: 20-23h
Default Value: 00000001h
Attribute: Read/Write
This register contains the base address of the USB I/O Registers.
13.2.10 SVID–Subsystem Vendor ID (Function 2)
Address: 2C-2Dh
Default Value: 0000h
Attribute: Read only
13.2.11 SID–Subsystem ID (Function 2)
Address: 2E-2Fh
Default Value: 0000h
Attribute: Read only
13.2.12 INTLN–Interrupt Line Register (Function 2)
Address Offset: 3Ch
Default Value: 00h
Attribute: Read/Write
Software programs this register with interrupt information concerning the USB.
Bit Description
31:16 Reserved. Hardwired to 0s. Must be written as 0S.
15:5 Index Register Base Address. Bits [15:5] correspond to I/O address signals AD [15:5],
respectively.
4:1 Reserved. Read as 0.
0 Resource Type Indicator (RTE)–RO. This bit is hardwired to 1 indicating that the base address
field in this register maps to I/O space.
Bit Description
15:0 Subsystem Vendor ID.
Bit Description
15:0 Subsystem ID.
Bit Description
7:0 Interrupt Line. The value in this register has no affect on IFB hardware operations.