82801FB Datasheet, PDF (510/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

UHCI Controllers Registers
13.1.6
13.1.7
13.1.8
13.1.9
PI—Programming Interface Register
(USB—D29:F0/F1/F2/F3)
Address Offset:
09h
Default Value:
00h
Attribute:
Size:
RO
8 bits
Bit
Description
Programming Interface — RO.
7:0
00h = No specific register level programming interface defined.
SCC—Sub Class Code Register
(USB—D29:F0/F1/F2/F3)
Address Offset:
0Ah
Default Value:
03h
Attribute:
Size:
RO
8 bits
Bit
Sub Class Code (SCC) — RO.
7:0
03h = USB host controller.
Description
BCC—Base Class Code Register
(USB—D29:F0/F1/F2/F3)
Address Offset:
0Bh
Default Value:
0Ch
Attribute:
Size:
RO
8 bits
Bit
Base Class Code (BCC) — RO.
7:0
0Ch = Serial Bus controller.
Description
MLT—Master Latency Timer Register
(USB—D29:F0/F1/F2/F3)
Address Offset: 0Dh
Default Value: 00h
Attribute: RO
Size:
8 bits
Bit
Description
7:0
Master Latency Timer (MLT) — RO. The USB controller is implemented internal to the ICH6 and not
arbitrated as a PCI device. Therefore the device does not require a Master Latency Timer.
510
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet