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845GL Datasheet(PDF) 5 Page - Intel Corporation

Part # 845GL
Description  Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
Download  193 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

845GL Datasheet(HTML) 5 Page - Intel Corporation

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Intel® 82845G/82845GL/82845GV GMCH
Datasheet
5
3.5.2.9
HDR1—Header Type Register (Device 1).........................83
3.5.2.10 PBUSN1—Primary Bus Number Register (Device 1) .......83
3.5.2.11 SBUSN1—Secondary Bus Number Register (Device 1)...84
3.5.2.12 SUBUSN1—Subordinate Bus Number Register (Device 1)..
84
3.5.2.13 SMLT1—Secondary Bus Master Latency Timer Register
(Device 1).............................................................................84
3.5.2.14 IOBASE1—I/O Base Address Register (Device 1)............85
3.5.2.15 IOLIMIT1—I/O Limit Address Register (Device 1).............85
3.5.2.16 SSTS1—Secondary Status Register (Device 1) ...............86
3.5.2.17 MBASE1—Memory Base Address Register (Device 1) ....87
3.5.2.18 MLIMIT1—Memory Limit Address Register (Device 1) .....88
3.5.2.19 PMBASE1—Prefetchable Memory Base Address Register
(Device 1).............................................................................89
3.5.2.20 PMLIMIT1—Prefetchable Memory Limit Address Register
(Device 1).............................................................................89
3.5.2.21 BCTRL1—Bridge Control Register (Device 1) ..................90
3.5.2.22 ERRCMD1—Error Command Register (Device 1)............91
3.5.3
Integrated Graphics Device Registers (Device 2).............................92
3.5.3.1
VID2—Vendor Identification Register (Device 2) ..............93
3.5.3.2
DID2—Device Identification Register (Device 2)...............93
3.5.3.3
PCICMD2—PCI Command Register (Device 2) ...............94
3.5.3.4
PCISTS2—PCI Status Register (Device 2) .......................95
3.5.3.5
RID2—Revision Identification Register (Device 2) ............95
3.5.3.6
CC—Class Code Register (Device 2) ...............................96
3.5.3.7
CLS—Cache Line Size Register (Device 2) ......................96
3.5.3.8
MLT2—Master Latency Timer Register (Device 2) ...........96
3.5.3.9
HDR2—Header Type Register (Device 2).........................97
3.5.3.10 GMADR —Graphics Memory Range Address Register
(Device 2).............................................................................97
3.5.3.11 MMADR—Memory Mapped Range Address Register
(Device 2).............................................................................98
3.5.3.12 SVID2—Subsystem Vendor Identification Register
(Device 2).............................................................................98
3.5.3.13 SID2—Subsystem Identification Register (Device 2) ........98
3.5.3.14 ROMADR—Video BIOS ROM Base Address Registers
(Device 2).............................................................................99
3.5.3.15 CAPPOINT—Capabilities Pointer Register (Device 2)......99
3.5.3.16 INTRLINE—Interrupt Line Register (Device 2)..................99
3.5.3.17 INTRPIN—Interrupt Pin Register (Device 2) ...................100
3.5.3.18 MINGNT—Minimum Grant Register (Device 2) ..............100
3.5.3.19 MAXLAT—Maximum Latency Register (Device 2)..........100
3.5.3.20 PMCAPID—Power Management Capabilities ID Register
(Device 2)...........................................................................100
3.5.3.21 PMCAP—Power Management Capabilities Register
(Device 2)...........................................................................101
3.5.3.22 PMCS—Power Management Control/Status Register
(Device 2)...........................................................................101
3.5.4
Device 6 Registers..........................................................................102
3.5.4.1
DWTC—DRAM Write Throttling Control Register
(Device 6)...........................................................................102
3.5.4.2
DRTC—DRAM Read Throttling Control Register
(Device 6)...........................................................................103
4
Functional Description ...................................................................................105
4.1
Processor System Bus.................................................................................105


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