- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄378230 > 845PE (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(hào)： | 845PE |
| 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(yè)數(shù)： | 45/176頁(yè) |
| 文件大小： | 2661K |
| 代理商： | 845PE |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)當(dāng)前第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)
Intel
82845GE/82845PE Datasheet
45
Register Description
3.4.2
CONFIG_DATA—Configuration Data Register
I/O Address:
Default Value:
Access:
Size:
CONFIG_DATA is a 32 bit read/write window into configuration space. The portion of
configuration space that is referenced by CONFIG_DATA is determined by the contents of
CONFIG_ADDRESS.
0CFCh
00000000h
Read/Write
32 bits
Bit
Description
31
Configuration Enable (CFGE).
1 = Enable.
0 = Disable.
30:24
Reserved.
These bits are read only and have a value of 0.
23:16
Bus Number.
When the Bus Number is programmed to 00h the target of the Configuration Cycle is
a hub interface agent ((G)MCH, ICH4, etc.). The Configuration Cycle is forwarded to the hub
interface if the Bus Number is programmed to 00h and the (G)MCH is not the target.
If the Bus Number is non-zero and matches the value programmed into the Secondary Bus Number
Register of Device 1, a Type 0 PCI configuration cycle will be generated on AGP/PCI_B.
If the Bus Number is non-zero, greater than the value in the Secondary Bus Number register of
Device 1 and less than or equal to the value programmed into the Subordinate Bus Number Register
of Device 1, a Type 1 PCI configuration cycle is generated on AGP/PCI_B.
If the Bus Number is non-zero, and does not fall within the ranges enumerated by Device 1’s
Secondary Bus Number or Subordinate Bus Number Register, then a HI Type 1 configuration Cycle
is generated.
15:11
Device Number.
This field selects one agent on the PCI bus selected by the Bus Number. When the
Bus Number field is “00” the (G)MCH decodes the Device Number field. The (G)MCH is always
Device Number 0 for the Host-HI bridge entity, Device Number 1 for the Host-PCI_B/AGP entity, and
device 2 for the integrated graphics device. Therefore, when the Bus Number =0 and the Device
Number equals 0,1 or 2, the internal (G)MCH devices are selected.
If the Bus Number is non-zero and matches the value programmed into the Device#1 Secondary
Bus Number Register, a Type 0 PCI configuration cycle will be generated on AGP/PCI_B. The
Device Number field is decoded and the (G)MCH asserts one and only one GADxx signal as an
IDSEL. GAD16 is asserted to access Device 0, GAD17 for Device 1 and so forth up to Device 15 for
which will assert AD31. All device numbers higher than #15 cause a type 0 configuration access with
no IDSEL asserted, which will result in a Master Abort reported in the (G)MCH’s “virtual” PCI-to-PCI
bridge registers.
For Bus Numbers resulting in AGP/PCI_B Type 1 Configuration cycles the Device Number is
propagated as GAD[15:11].
10:8
Function Number.
This field is mapped to GAD[10:8] during AGP/PCI_B Configuration cycles and
A[10:8] during HI configuration cycles. This allows the configuration registers of a particular function
in a multi-function device to be accessed. The (G)MCH ignores configuration cycles to its internal
Devices if the function number is not equal to 0.
7:2
Register Number.
This field selects one register within a particular Bus, Device, and Function as
specified by the other fields in the Configuration Address Register. This field is mapped to GAD[7:2]
during AGP/PCI_B Configuration cycles and A[7:2] during HI Configuration cycles.
1:0
Reserved.
Bit
Description
31:0
Configuration Data Window (CDW).
If bit 31 of CONFIG_ADDRESS is 1 any I/O access that to
the CONFIG_DATA register will be mapped to configuration space using the contents of
CONFIG_ADDRESS.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 845G | Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 845GL | Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 845GV | Intel 82845G/82845GL/82845GV Graphics and Memory Controller Hub (GMCH) |
| 8460 | LAN 10/100 Base-TX Dual Port Transformer Modules |
| 8461 | LAN 10/100 Base-TX Dual Port Transformer Modules |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 845PE MAX | 制造商:Micro-Star International 功能描述:845E S478 ATX 533FSB DDR - Bulk |
| 845PE MAX2-FIR | 制造商:Micro-Star International 功能描述:845PE S478 ATX LAN/RAID/AUD - Bulk |
| 845PE MAX2-FISR RPL | 制造商:Micro-Star International 功能描述:845PE ATX P4/CELERON 533FSB - Bulk |
| 845PE MAX2-FISR-DF | 制造商:Micro-Star International 功能描述:845PE ATX P4/CELERON 533FSB - Bulk |
| 845-R2 | 功能描述:SCOTCH BOOK TAPE 845-R 2 IN X 54 制造商:3m 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:6 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。