Intel® 945G/945GZ/945GC/ 945P/945PL Express Chipset Family ...

Intel® 945G/945GZ/945GC/ 945P/945PL Express Chipset Family ... Intel® 945G/945GZ/945GC/ 945P/945PL Express Chipset Family ...

16.08.2012 Views

Integrated Graphics Device (D2:F0) (Intel® 82945G/82945GC/ 82945GZ GMCH Only) 7.1.17 CAPPOINT—Capabilities Pointer (D2:F0) PCI Device: 2 Address Offset: 34h Default Value: 90h Access: RO Size: 8 bits Bit Access & Default 7:0 RO 90h 7.1.18 INTRLINE—Interrupt Line (D2:F0) PCI Device: 2 Address Offset: 3Ch Default Value: 01h Access: R/W Size: 8 bits Bit Access & Default 7:0 R/W 01h 7.1.19 INTRPIN—Interrupt Pin (D2:F0) PCI Device: 2 Address Offset: 3Dh Default Value: 01h Access: RO Size: 8 bits Bit Access & Default 7:0 RO 01h Description Capabilities Pointer Value: This field contains an offset into the function’s PCI configuration space for the first item in the New Capabilities Linked List, the MSI Capabilities ID registers at address 90h, or the Power Management Capabilities ID registers at address D0h. Description Interrupt Connection: This field is used to communicate interrupt line routing information. POST software writes the routing information into this register as it initializes and configures the system. The value in this register indicates which input of the system interrupt controller that is connected to the device’s interrupt pin. Description Interrupt Pin: As a device that only has interrupts associated with a single function, the IGD specifies INTA# as its interrupt pin. 01h = INTA#. 184 Intel ® 82945G/82945GZ/82945GC GMCH and 82945P/82945PL MCH Datasheet

7.1.20 MINGNT—Minimum Grant (D2:F0) PCI Device: 2 Address Offset: 3Eh Default Value: 00h Access: RO Size: 8 bits Bit Access & Default 7:0 RO 00h Integrated Graphics Device (D2:F0) (Intel® 82945G/82945GC/ 82945GZ GMCH Only) Description Minimum Grant Value: The IGD does not burst as a PCI compliant master. 7.1.21 MAXLAT—Maximum Latency (D2:F0) PCI Device: 2 Address Offset: 3Fh Default Value: 00h Access: RO Size: 8 bits Bit Access & Default 7:0 RO 00h Description Maximum Latency Value: The IGD has no specific requirements for how often it needs to access the PCI bus. 7.1.22 MCAPPTR—Mirror of Device 0 Capability Pointer (D2:F0) (Mirrored_D0_34) PCI Device: 2 Address Offset: 44h Default Value: E0h Access: RO Size: 8 bits This register is a read only copy of Device 0, offset 34h register. 7.1.23 MCAPID—Mirror of Device 0 Capability Identification (D2:F0) (Mirrored_D0_E0) PCI Device: 2 Address Offset: 48h Default Value: 000000000001090009h Access: RO Size: 72 bits This register is a read only copy of Device 0, offset E0h register. Intel ® 82945G/82945G/82945GC GMCH and 82945P/82945PL MCH Datasheet 185

Integrated Graphics Device (D2:F0) (<strong>Intel®</strong> 82<strong>945G</strong>/82<strong>945G</strong>C/ 82<strong>945G</strong>Z GMCH Only)<br />

7.1.17 CAPPOINT—Capabilities Pointer (D2:F0)<br />

PCI Device: 2<br />

Address Offset: 34h<br />

Default Value: 90h<br />

Access: RO<br />

Size: 8 bits<br />

Bit Access &<br />

Default<br />

7:0 RO<br />

90h<br />

7.1.18 INTRLINE—Interrupt Line (D2:F0)<br />

PCI Device: 2<br />

Address Offset: 3Ch<br />

Default Value: 01h<br />

Access: R/W<br />

Size: 8 bits<br />

Bit Access &<br />

Default<br />

7:0 R/W<br />

01h<br />

7.1.19 INTRPIN—Interrupt Pin (D2:F0)<br />

PCI Device: 2<br />

Address Offset: 3Dh<br />

Default Value: 01h<br />

Access: RO<br />

Size: 8 bits<br />

Bit Access &<br />

Default<br />

7:0 RO<br />

01h<br />

Description<br />

Capabilities Pointer Value: This field contains an offset into the function’s PCI<br />

configuration space for the first item in the New Capabilities Linked List, the MSI<br />

Capabilities ID registers at address 90h, or the Power Management Capabilities<br />

ID registers at address D0h.<br />

Description<br />

Interrupt Connection: This field is used to communicate interrupt line routing<br />

information. POST software writes the routing information into this register as it<br />

initializes and configures the system. The value in this register indicates which<br />

input of the system interrupt controller that is connected to the device’s interrupt<br />

pin.<br />

Description<br />

Interrupt Pin: As a device that only has interrupts associated with a single<br />

function, the IGD specifies INTA# as its interrupt pin.<br />

01h = INTA#.<br />

184 Intel ® 82<strong>945G</strong>/82<strong>945G</strong>Z/82<strong>945G</strong>C GMCH and 82<strong>945P</strong>/82<strong>945P</strong>L MCH Datasheet

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