Host-PCI Express* Graphics Bridge Registers (D1:F0)
R
Intel
®
82925X/82925XE MCH Datasheet
131
8.1.27
MSI_CAPID—Message Signaled Interrupts Capability ID
(D1:F0)
PCI Device:
1
Address Offset:
90h
Default Value:
A005h
Access: RO
Size: 16
bits
When a device supports MSI, it can generate an interrupt request to the processor by writing a
predefined data item (a message) to a predefined memory address.
The reporting of the existence of this capability can be disabled by setting MSICH (CAPL [0] @
7Fh). In that case walking this linked list will skip this capability and, instead, go directly from
the PCI PM capability to the PCI Express capability.
Bit Access
&
Default
Description
15:8 RO
A0h
Pointer to Next Capability:
This field contains a pointer to the next item in the
capabilities list that is the PCI Express* capability.
7:0 RO
05h
Capability ID:
05h = Identifies this linked list item (capability structure) as being for MSI
registers.
Содержание 82925X
Страница 78: ...Host Bridge DRAM Controller Registers D0 F0 R 78 Intel 82925X 82925XE MCH Datasheet...
Страница 98: ...EPBAR Registers Egress Port Register Summary R 98 Intel 82925X 82925XE MCH Datasheet...
Страница 108: ...DMIBAR Registers Direct Media Interface DMI RCRB R 108 Intel 82925X 82925XE MCH Datasheet...
Страница 156: ...Host PCI Express Graphics Bridge Registers D1 F0 R 156 Intel 82925X 82925XE MCH Datasheet...
Страница 172: ...System Address Map R 172 Intel 82925X 82925XE MCH Datasheet...
Страница 192: ...Electrical Characteristics R 192 Intel 82925X 82925XE MCH Datasheet...
Страница 220: ...Ballout and Package Information R 220 Intel 82925X 82925XE MCH Datasheet Figure 12 3 MCH Package Dimensions MCH...