82801BA Datasheet, PDF (373/498 Pages) Intel Corporation – Intel 82801BA I/O Controller Hub 2 (ICH2) and Intel 82801BAM I/O Controller Hub 2 Mobile

USB Controller Registers
Bit
Description
SMI on USB IRQ Enable (USBSMIEN)—R/W.
4 ^{1 = USB interrupt will cause an SMI event.}
0 = Disable
SMI on Port 64 Writes Enable (64WEN)—R/W.
3 ^{1 = A write to port 64h will cause an SMI event.}
0 = Disable
SMI on Port 64 Reads Enable (64REN)—R/W.
2 ^{1 = A read to port 64h will cause an SMI event.}
0 = Disable
SMI on Port 60 Writes Enable (60WEN)—R/W.
1 ^{1 = A write to port 60h will cause an SMI event.}
0 = Disable
SMI on Port 60 Reads Enable (60REN)—R/W.
0 ^{1 = A read to port 60h will cause an SMI event.}
0 = Disable
11.1.16
USB_RES—USB Resume Enable Register
(USB—D31:F2/F4)
Address Offset:
C4h
Default Value:
00h
Attribute:
Size:
R/W
8 bits
Bit
Description
7:2 Reserved.
PORT1EN—R/W. Enable the USB controller to respond to wakeup events on this port. For Function
2 this applies to port 1; for Function 4, this applies to port 3.
1
1 = The USB controller will monitor this port for remote wakeup and connect/disconnect events.
0 = The USB controller will not look at this port for a wakeup event.
PORT0EN—R/W. Enable the USB controller to respond to wakeup events on this port. For Function
2 this applies to port 0; for Function 4, this applies to port 2.
0
1 = The USB controller will monitor this port for remote wakeup and connect/disconnect events.
0 = The USB controller will not look at this port for a wakeup event.
82801BA ICH2 and 82801BAM ICH2-M Datasheet
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