307013-003 Datasheet, PDF (549/848 Pages) Intel Corporation – Intel I/O Controller Hub 7

EHCI Controller Registers (D29:F7)
13.1.5
RID—Revision Identification Register
(USB EHCI—D29:F7)
Offset Address: 08h
Default Value: See bit description
Attribute:
Size:
RO
8 bits
13.1.6
Bit
Description
7:0
Revision ID — RO. Refer to the Intel^® I/O Controller Hub 7 (ICH7) Family Specification
Update for the value of the Revision ID Register.
PI—Programming Interface Register
(USB EHCI—D29:F7)
Address Offset: 09h
Default Value: 20h
Attribute:
Size:
RO
8 bits
13.1.7
Bit
Description
7:0
Programming Interface — RO. A value of 20h indicates that this USB 2.0 host controller
conforms to the EHCI Specification.
SCC—Sub Class Code Register
(USB EHCI—D29:F7)
Address Offset: 0Ah
Default Value: 03h
Attribute:
Size:
RO
8 bits
13.1.8
Bit
Description
Sub Class Code (SCC) — RO.
7:0
03h = Universal serial bus host controller.
BCC—Base Class Code Register
(USB EHCI—D29:F7)
Address Offset: 0Bh
Default Value: 0Ch
Attribute:
Size:
RO
8 bits
Bit
Base Class Code (BCC) — RO.
7:0
0Ch = Serial bus controller.
Description
Intel ^® ICH7 Family Datasheet
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