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82845GL датащи(PDF) 48 Page - Intel Corporation

номер детали 82845GL
подробное описание детали  Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH)
PDF  193 Pages
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производитель  INTEL [Intel Corporation]
домашняя страница  http://www.intel.com
Logo INTEL - Intel Corporation

82845GL датащи(HTML) 48 Page - Intel Corporation

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Register Description
48
Intel® 82845G/82845GL/82845GV GMCH Datasheet
3.5
Intel® GMCH Internal Device Registers
3.5.1
DRAM Controller/Host-Hub Interface Device Registers
(Device 0)
The DRAM controller and host-hub interface registers are in Device 0. This section contains the
PCI configuration registers listed in order of ascending offset address. Table 3-1 provides the
register address map for this device.
Table 3-1. DRAM Controller/Host-Hub Register Address Map (Device 0) (Sheet 1 of 2)
Address
Offset
Symbol
Register Name
Default Value
Access
00–01h
VID
Vendor Identification
8086h
RO
02–03h
DID
Device Identification
2560h
RO
04–05h
PCICMD
PCI Command Register
0006h
RO, R/W
06–07h
PCISTS
PCI Status Register
0090h
RO, R/WC
08h
RID
Revision Identification
see register
description
RO
09
Intel Reserved
0Ah
SUBC
Sub-Class Code
00h
RO
0Bh
BCC
Base Class Code
06h
RO
0Ch
Intel Reserved
0Dh
MLT
Master Latency Timer
00h
RO
0Eh
HDR
Header Type
00h
RO
0Fh
Intel Reserved
10–13h
APBASE
Aperture Base Configuration
00000008h
RO, R/W
14–2Bh
Intel Reserved
2C–2Dh
SVID
Subsystem Vendor Identification
0000h
R/WO
2E–2Fh
SID
Subsystem Identification
0000h
R/WO
30–33h
Intel Reserved
34h
CAPPTR
Capabilities Pointer
E4h
RO
35–50h
Intel Reserved
51h
AGPM
AGP Miscellaneous Configuration
00h
R/W
52h
GC
Graphics Control
0000_1000b
R/W
53–5Fh
Intel Reserved
60–63h
DRB[0:3]
DRAM Row Boundary (4 registers)
01h
RW
64–6Fh
Intel Reserved
70–71h
DRA[0:3]
DRAM Row Attribute (4 registers)
00h
RW
72–77h
Intel Reserved
78–7Bh
DRT
DRAM Timing Register
00000000h
RW
7C–7Fh
DRC
DRAM Controller Mode
00000000h
RW, RO
80–8Fh
Intel Reserved



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