Universal Serial Bus (Usb) Configuration; Pci Configuration Registers (Function 2); Pci Configuration Registers-Function 2 (Usb Interface) - Intel 460GX Software Developer’s Manual

IFB Register Mapping
9.3

Universal Serial Bus (USB) Configuration

The IFB integrates an USB Controllers. The USB Controller is UHCI 1.1 compliant. It implements
the root hub of the USB, which contains two ports.
The IFB PCI function 2 reflects both the Universal Serial Bus Host and Root Hubs, with 2
connected USB ports.
9.3.1

PCI Configuration Registers (Function 2)

Table 9-3. PCI Configuration Registers–Function 2 (USB Interface)
Configuration Offset
00–01h
02–03h
04–05h
06–07h
08h
09-0Bh
0Ch
0Dh
0Eh
0F–1Fh
20–23h
24–3Bh
3Ch
3Dh
3E–5Fh
60h
61–69h
6A–6Bh
6C–BFh
C0–C1h
C2-C3h
C4h
C5-F3h
F4-F7h
F8-FBh
FC-FFh
9-4
Mnemonic
VID Vendor Identification
DID Device Identification
PCICMD PCI Command
PCISTS PCI Device Status
RID Revision Identification
CLASSC Class Code
– Reserved
MLT Latency Timer
HEDT Header Type
– Reserved
USBBA USB I/O Space Base Address
– Reserved
INTLN Interrupt Line
INTPN Interrupt Pin
– Reserved.
SBRNUM Serial Bus Release Number
– Reserved
MCR Miscellaneous Control Register
– Reserved
LEGSUP USB Legacy Keyboard/Mouse Control
--- Reserved
USBRES USB Resume Enable
– Reserved
– Reserved
– Manufacturer's ID Register
– Reserved
Intel® 460GX Chipset Software Developer's Manual
Register Register Access
RO
RO
R/W
R/W
RO
RO
–
R/W
RO
–
R/W
–
R/W
RO
–
RO
–
R/W
–
R/W
-----
R/W
–
–
–
–