- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378217 > 82845GE (Intel Corp.) 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH) PDF資料下載
參數(shù)資料
| 型號： | 82845GE |
| 廠商： | Intel Corp. |
| 英文描述： | 82845GE Graphics and Memory Controller Hub (GMCH) and 82845PE Memory Controller Hub (MCH) |
| 中文描述： | 82845GE圖形和內(nèi)存控制器中樞（GMCH）和82845PE內(nèi)存控制器中樞（MCH） |
| 文件頁數(shù)： | 36/157頁 |
| 文件大?。?/td> | 1407K |
| 代理商： | 82845GE |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁當(dāng)前第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁
Intel
82845MP/82845MZ Chipset-Mobile (MCH-M)
36
Datasheet
250687-002
R
3.
Register Description
3.1.
Conceptual Overview of the Platform Configuration
Structure
The Intel
845MP/845MZ Chipset MCH-M and ICH3-M are physically connected by hub interface A.
From a configuration standpoint, the hub interface A is PCI bus #0. As a result, all devices internal to the
MCH-M and ICH3-M appear to be on PCI bus #0. The system’s primary PCI expansion bus is physically
attached to the ICH3-M and from a configuration perspective, appears to be a hierarchical PCI bus
behind a PCI-to-PCI bridge and therefore has a programmable PCI Bus number.
Note that the primary
PCI bus is referred to as PCI_A in this document and is not PCI bus #0 from a configuration
standpoint
. The AGP appears to system software to be a real PCI bus behind PCI-to-PCI bridges
resident as devices on PCI bus #0.
The MCH-M contains two PCI devices within a single physical component. The configuration registers
for the four devices are mapped as devices residing on PCI bus #0.
Device 0: Host-hub interface Bridge/DRAM Controller. Logically this appears as a PCI device
residing on PCI bus #0. Physically Device 0 contains the standard PCI registers, DRAM registers,
the Graphics Aperture controller, and other MCH-M specific registers.
Device 1: Host-AGP Bridge. Logically this appears as a “virtual” PCI-to-PCI bridge residing on
PCI bus #0. Physically Device 1 contains the standard PCI-to-PCI bridge registers and the standard
AGP/PCI configuration registers (including the AGP I/O and memory address mapping).
The following table shows the Device # assignment for the various internal MCH-M devices.
Table 19. Device Number Assignment
MCH-M Function
Bus #0, Device#
DRAM Controller/8 bit HI_A Controller
Device #0
Host-to-AGP Bridge (virtual P2P)
Device #1
NOTE:
A physical PCI bus #0 does not exist. The hub interface and the internal devices in the Intel
845MP/845MZ
Chipset MCH-M and ICH3-M logically constitute PCI Bus #0 to configuration software.
3.2.
Standard PCI Bus Configuration Mechanism
The PCI Bus defines a slot based "configuration space" that allows each device to contain up to 8
functions with each function containing up to 256 8-bit configuration registers. The PCI specification
defines two bus cycles to access the PCI configuration space: Configuration Read and Configuration
Write. Memory and I/O spaces are supported directly by the CPU. Configuration space is supported by a
mapping mechanism implemented within the MCH-M. The PCI specification defines two mechanisms to
access configuration space, Mechanism #1 and Mechanism #2. The MCH-M supports only Mechanism
#1.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 8284A | Clock Generator and Driver for 8066, 8088 Processors |
| 8284A-1 | Clock Generator and Driver for 8066, 8088 Processors |
| 8284 | TWO-OUTPUT LNB SUPPLY AND CONTROL-VOLTAGE REGULATOR |
| 82865G | Intel 865G/865GV Graphics and Memory Controller Hub |
| 82865GV | Intel 865G/865GV Graphics and Memory Controller Hub |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 82845GL | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 82845GV | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 82845GX | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 82845MP | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
| 82845MX | 制造商:INTEL 制造商全稱:Intel Corporation 功能描述:Intel 845 Family Chipset-Mobile 82845MP/82845MZ Chipset Memory Controller Hub Mobile (MCH-M) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。