82845G datasheet(45/193 Pages) INTEL

部件名	82845G

功能描述	Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)

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制造商	INTEL [Intel Corporation]

网页	http://www.intel.com

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Intel® 82845G/82845GL/82845GV GMCH Datasheet

45

Register Description

have a Bus Number that matches the Secondary Bus Number of the GMCH’s “virtual” Host-to-

PCI_B/AGP bridge will be translated into Type 0 configuration cycles on the PCI_B/AGP

interface. The GMCH will decode the Device Number field [15:11] and assert the appropriate

GAD signal as an IDSEL in accordance with the PCI-to-PCI Bridge Type 0 configuration

mechanism. The remaining address bits will be mapped as described in Figure 3-2.

NOTE:

If the Bus Number is non-zero, greater than the value programmed into the Secondary Bus Number

register, and less than or equal to the value programmed into the Subordinate Bus Number register the

configuration cycle is targeting a PCI bus downstream of the targeted interface. The GMCH will

generate a Type 1 PCI configuration cycle on PCI_B/AGP. The address bits will be mapped as

described in Figure 3-3.

Figure 3-2. Configuration Mechanism Type 0 Configuration Address to PCI Address Mapping

x

Register Number

Function No.

Device Number

Bus Number

Reserved

1

CONFIG_ADDRESS

AGP/PCI_B Type 0 Configuration Cycle

31

0

24

23

16 15

11

10

8

7

2

1

0

Register Number

Function No.

Reserved = 0

IDSEL

31

0

24

23

16 15

11

10

8

7

2

1

14

AGP GAD[31:0] Address

Config Address

AD[15:11]

AGP GAD[31:16] IDSEL

Config Address

AD[15:11]

AGP GAD[31:16] IDSEL

00000

0000 0000 0000 0001

01000

0000 0001 0000 0000

00001

0000 0000 0000 0010

01001

0000 0010 0000 0000

00010

0000 0000 0000 0100

01010

0000 0100 0000 0000

00011

0000 0000 0000 1000

01011

0000 1000 0000 0000

00100

0000 0000 0001 0000

01100

0001 0000 0000 0000

00101

0000 0000 0010 0000

01101

0010 0000 0000 0000

00110

0000 0000 0100 0000

01110

0100 0000 0000 0000

00111

0000 0000 1000 0000

01111

1000 0000 0000 0000

1xxxx

0000 0000 0000 0000

类似零件编号 - 82845G

制造商	部件名	数据表	功能描述
Intel Corporation	82845GE	2Mb / 176P	82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH)

More results

类似说明 - 82845G

制造商	部件名	数据表	功能描述
Intel Corporation	290676-002	969Kb / 119P	Intel 810E Chipset: 82810E Graphics and Memory Controller Hub (GMCH)
	290656-002	491Kb / 120P	Intel 82810/82810-DC100 Graphics and Memory Controller Hub (GMCH)
	82830MP	1Mb / 159P	Intel 830MP Chipset: 82830MP Graphics and Memory Controller Hub (GMCH-M)
	82845PE	2Mb / 176P	82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH)
	290688-001	801Kb / 172P	Intel 815 Chipset Family 82815 Graphics and Memory Controller Hub (GMCH)
	RG82855GMESL72L	1Mb / 213P	Intel짰 855GM/855GME Chipset Graphics and Memory Controller Hub (GMCH)
	JG82855GMESL7VN	1Mb / 213P	Intel짰 855GM/855GME Chipset Graphics and Memory Controller Hub (GMCH)
	865G	3Mb / 249P	Intel 865G/865GV Graphics and Memory Controller Hub
	316966-002	2Mb / 437P	Graphics and Memory Controller Hub
	QG5000XSL9TH	3Mb / 458P	Intel 5000X Chipset Memory Controller Hub (MCH)

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