FW82371EB Q 657 Intel, FW82371EB Q 657 Datasheet - Page 13

• Manufacturer Part Number: FW82371EB Q 657
• Manufacturer: Intel

Specifications of FW82371EB Q 657

• Lead Free Status / RoHS Status: Not Compliant

4.
5.
Specification Update
R
RI# and USB Generate an SCI
The PIIX4E does not have the ability to generate an SCI upon the setting of RI_STS or USB_STS. The
PIIX4E can generate an SCI upon the setting of RI_STS or USB_STS.
The SCI_EN bit (PM base + 04h bit 0) and the RI_EN (PM + 0Eh bit 10) must be set to enable the SCI
generation from RI assertion. The SCI_EN bit and the USB_EN bit (PM base + 0Eh bit 8) must be set
in order to enable SCI generation from USB interrupts.
This change applies to all steppings of the PIIX4E and will be incorporated into the next revision of the
PIIX4 datasheet.
7.2.6 GPEN—GENERAL PURPOSE ENABLE REGISTER (IO)
I/O Address:
Default Value:
Attribute:
Thermal Override Allows Break Events
If THRM# is asserted for more than 2 seconds while the PIIX4 is in a Stop Grant, Stop Clock, Sleep, or
Deep Sleep state, the PIIX4 will defer all break events until the THRM# signal goes inactive. The
PIIX4E will not defer break events based on the state of the THRM# signal.
This change applies to all steppings of the PIIX4E and will be incorporated into the next revision of the
PIIX4 datasheet.
15:12
Bit
7:1
11
10
9
8
0
Reserved.
Lid Enable(LID_EN)—R/W. 1=Enable the generation of an SMI#, SCI, or resume event upon the
setting of the LID_STS bit. 0=Disable
Ring Enable(RI_EN)—R/W. 1=Enable the generation of an SCI or resume event upon the setting
of the RI_STS bit. 0=Disable
GPI Enable(GPI_EN)—R/W. 1= Enable the generation of an SMI#, SCI, or resume event upon the
setting of the GPI_STS bit. 0=Disable
USB Enable (USB_EN)—R/W. 1=Enable the generation of an SCI or resume event upon the
setting of the USB_STS bit. 0=Disable.
Reserved.
Thermal Enable(THRM_EN)—R/W. 1=Enable the generation of tan SMI# or SCI upon the setting
of the THRM_STS bit. 0=Disable
Base + (0Eh)
00h
Read/Write
Description
Intel
®
82371EB (PIIX4E)
13