845G Datasheet PDF - Intel Corporation

www.Datasheet-PDF.com

845G
Intel Corporation

Part Number 845G
Description Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub
Page 30 Pages


845G datasheet pdf
Download PDF
845G pdf
View PDF for Mobile

No Preview Available !

www.DataSheet.co.kr
Intel® 845G/845GL/845GV Chipset
Datasheet
Intel® 82845G/82845GL/82845GV Graphics and Memory Controller
Hub (GMCH)
October 2002
Document Number: 290746-002
Datasheet pdf - http://www.DataSheet4U.net/



No Preview Available !

www.DataSheet.co.kr
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 845G/845GL/845GV chipsets 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.
I2C is a two-wire communications bus/protocol developed by Philips. SMBus is a subset of the I2C bus/protocol and was developed by Intel.
Implementations of the I2C bus/protocol may require licenses from various entities, including Philips Electronics N.V. and North American Philips
Corporation.
Intel, Pentium, and the Intel logo 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 © 2002, Intel Corporation
2 Intel® 82845G/82845GL/82845GV GMCH Datasheet
Datasheet pdf - http://www.DataSheet4U.net/



No Preview Available !

www.DataSheet.co.kr
Contents
1 Introduction...........................................................................................................13
1.1 Terminology ...................................................................................................13
1.2 Related Documents .......................................................................................14
1.3 Intel® 845G Chipset System Overview ..........................................................15
1.4 Intel® 82845G GMCH Overview....................................................................17
1.4.1 Host Interface....................................................................................17
1.4.2 System Memory Interface .................................................................17
1.4.3 Hub Interface ....................................................................................17
1.4.4 Multiplexed AGP and Intel® DVO Port Interface ...............................18
1.4.5 Graphics Overview............................................................................18
1.4.6 Display Interfaces .............................................................................19
2 Signal Description ..............................................................................................21
2.1 Host Interface Signals....................................................................................23
2.2 Memory Interface ...........................................................................................25
2.2.1 DDR SDRAM Interface .....................................................................25
2.2.2 SDR SDRAM Interface .....................................................................26
2.3 Hub Interface .................................................................................................28
2.4 AGP Interface Signals....................................................................................29
2.4.1 AGP Addressing Signals...................................................................29
2.4.2 AGP Flow Control Signals ................................................................29
2.4.3 AGP Status Signals ..........................................................................30
2.4.4 AGP Strobes .....................................................................................30
2.4.5 PCI Signals–AGP Semantics............................................................31
2.4.6 PCI Pins during PCI Transactions on AGP Interface ........................32
2.5 Multiplexed Intel® DVO Device Signal Interfaces ..........................................32
2.5.1 Intel® DVO Signal Name to AGP Signal Name Pin Mapping............34
2.6 Analog Display ...............................................................................................35
2.7 Clocks, Reset, and Miscellaneous Signals ....................................................36
2.8 RCOMP, VREF, VSWING Signals.................................................................36
2.9 Power and Ground Signals ............................................................................37
2.10 Functional Straps ...........................................................................................38
2.11 GMCH Sequencing Requirements.................................................................38
2.12 Reset States ..................................................................................................39
2.12.1 Full and Warm Reset States .............................................................39
3 Register Description..........................................................................................41
3.1 Register Terminology.....................................................................................41
3.2 Platform Configuration ...................................................................................42
3.3 Routing Configuration Accesses....................................................................43
3.3.1 Standard PCI Bus Configuration Mechanism ...................................44
3.3.2 PCI Bus #0 Configuration Mechanism ..............................................44
3.3.3 Primary PCI and Downstream Configuration Mechanism.................44
3.3.4 AGP/PCI_B Bus Configuration Mechanism ......................................44
3.4 I/O Mapped Registers ....................................................................................46
3.4.1 CONFIG_ADDRESS—Configuration Address Register ...................46
3.4.2 CONFIG_DATA—Configuration Data Register ................................47
3.5 Intel® GMCH Internal Device Registers .........................................................48
Intel® 82845G/82845GL/82845GV GMCH Datasheet
3
Datasheet pdf - http://www.DataSheet4U.net/



No Preview Available !

www.DataSheet.co.kr
4
3.5.1
3.5.2
DRAM Controller/Host-Hub Interface Device Registers (Device 0) .. 48
3.5.1.1 VID—Vendor Identification Register (Device 0) ................ 50
3.5.1.2 DID—Device Identification Register (Device 0)................. 50
3.5.1.3 PCICMD—PCI Command Register (Device 0) ................. 51
3.5.1.4 PCISTS—PCI Status Register (Device 0) ......................... 52
3.5.1.5 RID—Revision Identification Register (Device 0) .............. 53
3.5.1.6 SUBC—Sub-Class Code Register (Device 0) ................... 53
3.5.1.7 BCC—Base Class Code Register (Device 0).................... 53
3.5.1.8 MLT—Master Latency Timer Register (Device 0) ............. 54
3.5.1.9 HDR—Header Type Register (Device 0) .......................... 54
3.5.1.10 APBASE—Aperture Base Configuration Register
(Device 0)............................................................................. 55
3.5.1.11 SVID—Subsystem Vendor Identification Register
(Device 0)............................................................................. 56
3.5.1.12 SID—Subsystem Identification Register (Device 0) .......... 56
3.5.1.13 CAPPTR—Capabilities Pointer Register (Device 0) ......... 56
3.5.1.14 AGPM—AGP Miscellaneous Configuration Register
(Device 0)............................................................................. 57
3.5.1.15 GC—Graphics Control Register (Device 0)....................... 58
3.5.1.16 DRB[0:3]—DRAM Row Boundary Register (Device 0) ..... 60
3.5.1.17 DRA—DRAM Row Attribute Register (Device 0) .............. 61
3.5.1.18 DRT—DRAM Timing Register (Device 0) ......................... 62
3.5.1.19 DRC—DRAM Controller Mode Register (Device 0) .......... 63
3.5.1.20 PAM[0:6]—Programmable Attribute Map Registers
(Device 0)............................................................................. 64
3.5.1.21 FDHC—Fixed SDRAM Hole Control Register (Device 0) . 67
3.5.1.22 SMRAM—System Management RAM Control Register
(Device 0)............................................................................. 67
3.5.1.23 ESMRAMC—Extended System Management RAM Control
Register (Device 0) .............................................................. 68
3.5.1.24 ACAPID—AGP Capability Identifier Register (Device 0) .. 69
3.5.1.25 AGPSTAT—AGP Status Register (Device 0) ................... 69
3.5.1.26 AGPCMD—AGP Command Register (Device 0) .............. 70
3.5.1.27 AGPCTRL—AGP Control Register (Device 0) .................. 70
3.5.1.28 APSIZE—Aperture Size Register (Device 0) .................... 71
3.5.1.29 ATTBASE—Aperture Translation Table Register
Device 0).............................................................................. 71
3.5.1.30 AMTT—AGP MTT Control Register (Device 0)................. 72
3.5.1.31 LPTT—AGP Low Priority Transaction Timer Register
(Device 0)............................................................................. 72
3.5.1.32 GMCHCFG—GMCH Configuration Register (Device 0) ... 73
3.5.1.33 ERRSTS—Error Status Register (Device 0) ..................... 74
3.5.1.34 ERRCMD—Error Command Register (Device 0).............. 75
3.5.1.35 SMICMD—SMI Command Register (Device 0) ................ 76
3.5.1.36 SCICMD—SCI Command Register (Device 0) ................. 76
3.5.1.37 SKPD—Scratchpad Data Register (Device 0) .................. 76
3.5.1.38 CAPREG—Capability Identification Register (Device 0) ... 77
Host-to-AGP Bridge Registers (Device 1)......................................... 78
3.5.2.1 VID1—Vendor Identification Register (Device 1) .............. 79
3.5.2.2 DID1—Device Identification Register (Device 1)............... 79
3.5.2.3 PCICMD1—PCI Command Register (Device 1) ............... 80
3.5.2.4 PCISTS1—PCI Status Register (Device 1)....................... 81
3.5.2.5 RID1—Revision Identification Register (Device 1) ............ 82
3.5.2.6 SUBC1—Sub-Class Code Register (Device 1) ................. 82
3.5.2.7 BCC1—Base Class Code Register (Device 1).................. 82
3.5.2.8 MLT1—Master Latency Timer Register (Device 1) ........... 83
Intel® 82845G/82845GL/82845GV GMCH Datasheet
Datasheet pdf - http://www.DataSheet4U.net/



845G datasheet pdf
Download PDF
845G pdf
View PDF for Mobile


Related : Start with 845 Part Numbers by
845 Relay 845
Song Chuan
845 pdf
845-2A-C Relay 845-2A-C
Song Chuan
845-2A-C pdf
845-2A-F-C Relay 845-2A-F-C
Song Chuan
845-2A-F-C pdf
845-2C-C Relay 845-2C-C
Song Chuan
845-2C-C pdf
845-2C-F-C Relay 845-2C-F-C
Song Chuan
845-2C-F-C pdf
845-H1A-C Relay 845-H1A-C
Song Chuan
845-H1A-C pdf
845G Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub 845G
Intel Corporation
845G pdf
845GL Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub 845GL
Intel Corporation
845GL pdf

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Contact