910GL datasheet(144/426 Pages) INTEL

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Host-PCI Express* Bridge Registers (D1:F0)

(Intel® 82915G/82915P/82915PL Only)

144

Datasheet

8.1.23

PM_CAPID1—Power Management Capabilities (D1:F0)

PCI Device:

Address Offset:

80h

Default Value:

1902 9001h or 1902 A001h

Access:

Size:

32 bits

Bit

Access &

Default

Description

31:27

19h

PME Support: This field indicates the power states in which this device may

indicate PME wake via PCI Express messaging. D0, D3hot, and D3cold. This

device is not required to do anything to support D3hot and D3cold; it simply must

report that those states are supported. Refer to the PCI Power Management 1.1

specification for encoding explanation and other power management details.

D2: Hardwired to 0 to indicate that the D2 power management state is NOT

supported.

D1: Hardwired to 0 to indicate that the D1 power management state is NOT

supported.

24:22

000b

Auxiliary Current: Hardwired to 0 to indicate that there are no 3.3Vaux auxiliary

current requirements.

0 b

Device Specific Initialization (DSI): Hardwired to 0 to indicate that special

initialization of this device is NOT required before generic class device driver is to

use it.

Auxiliary Power Source (APS): Hardwired to 0.

PME Clock: Hardwired to 0 to indicate this device does NOT support PME#

generation.

18:16

010b

PCI PM CAP Version: Hardwired to 02h to indicate there are 4 bytes of power

management registers implemented and that this device complies with revision

1.1 of the PCI Power Management Interface Specification.

15:8

90h

A0h

Pointer to Next Capability: This field contains a pointer to the next item in the

capabilities list. If MSICH (CAPL[0] @ 7Fh) is 0, then the next item in the

capabilities list is the Message Signaled Interrupts (MSI) capability at 90h. If

MSICH (CAPL[0] @ 7Fh) is 1, then the next item in the capabilities list is the PCI

Express* capability at A0h.

7:0

01h

Capability ID: Value of 01h identifies this linked list item (capability structure) as

being for PCI Power Management registers.

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