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NG82925X PDF даташит

Спецификация NG82925X изготовлена ​​​​«Intel» и имеет функцию, называемую «Express Chipset».

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Номер произв NG82925X
Описание Express Chipset
Производители Intel
логотип Intel логотип 

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NG82925X Даташит, Описание, Даташиты
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Intel® 925X Express Chipset
Datasheet
For the Intel® 82925X Memory Controller Hub (MCH)
August 2004
www.DataSheet4U.com
Document Numwbwerw: .D30a1ta4S6h4e-0e0t42U.com









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NG82925X Даташит, Описание, Даташиты
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INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY
ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN
INTEL’S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL
DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT,
COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life saving, or life sustaining
applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Designers must not rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Intel reserves these for
future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The Intel® 82925X MCH may contain design defects or errors known as errata, which may cause the product to deviate from published specifications.
Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Intel and Pentium are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries.
*Other names and brands may be claimed as the property of others.
Copyright© 2004, Intel Corporation
2 Intel® 82925X MCH Datasheet









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NG82925X Даташит, Описание, Даташиты
R
Contents
1 Introduction ........................................................................................................................13
1.1 Terminology ..........................................................................................................15
1.2 Reference Documents ..........................................................................................17
1.3 MCH Overview......................................................................................................17
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
Host Interface ........................................................................................17
System Memory Interface .....................................................................18
Direct Media Interface (DMI) .................................................................19
PCI Express* Graphics Interface ..........................................................19
System Interrupts ..................................................................................20
MCH Clocking .......................................................................................21
Power Management ..............................................................................21
2 Signal Description..............................................................................................................22
2.1 Host Interface Signals...........................................................................................24
2.2 DDR2 DRAM Channel A Interface........................................................................27
2.3 DDR2 DRAM Channel B Interface........................................................................28
2.4 DDR2 DRAM Reference and Compensation........................................................29
2.5 PCI Express* x16 Graphics Port Signals ..............................................................29
2.6 Clocks, Reset, and Miscellaneous ........................................................................30
2.7 Direct Media Interface (DMI).................................................................................30
2.8 Power and Ground................................................................................................31
2.9 Reset States and Pull-up/Pull-downs....................................................................31
3 Register Description ..........................................................................................................36
3.1 Register Terminology............................................................................................36
3.2 Platform Configuration ..........................................................................................38
3.3 General Routing Configuration Accesses .............................................................39
3.3.1 Standard PCI Bus Configuration Mechanism........................................39
3.3.2 Logical PCI Bus 0 Configuration Mechanism ........................................40
3.3.3 Primary PCI and Downstream Configuration Mechanism .....................40
3.3.4 PCI Express* Enhanced Configuration Mechanism ..............................41
3.3.5 Intel® 82925X MCH Configuration Cycle Flowchart ..............................43
3.4 I/O Mapped Registers ...........................................................................................44
3.4.1 CONFIG_ADDRESS—Configuration Address Register .......................44
3.4.2 CONFIG_DATA—Configuration Data Register.....................................45
4 Host Bridge/DRAM Controller Registers (D0:F0) ..............................................................46
4.1 Device 0 Function 0 PCI Configuration Register Details ......................................49
4.1.1 VID—Vendor Identification (D0:F0).......................................................49
4.1.2 DID—Device Identification (D0:F0) .......................................................49
4.1.3 PCICMD—PCI Command (D0:F0)........................................................50
4.1.4 PCISTS—PCI Status (D0:F0) ...............................................................51
4.1.5 RID—Revision Identification (D0:F0) ....................................................52
4.1.6 CC—Class Code (D0:F0)......................................................................52
4.1.7 MLT—Master Latency Timer (D0:F0) ...................................................53
Intel® 82925X MCH Datasheet
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Номер в каталогеОписаниеПроизводители
NG82925XExpress ChipsetIntel
Intel

Номер в каталоге Описание Производители
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