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参数资料
| 型号： | SPD6729QCE |
| 厂商： | INTEL CORP |
| 元件分类： | 总线控制器 |
| 英文描述： | PCMCIA BUS CONTROLLER, PQFP208 |
| 封装： | MQFP-208 |
| 文件页数： | 79/116页 |
| 文件大小： | 1442K |
| 代理商： | SPD6729QCE |
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PCI-to-PC Card (PCMCIA) Controller — PD6729
Datasheet
65
9.0
Memory Window Mapping Registers
The following information about the memory map windows is important:
The memory window mapping registers determine where in the PCI memory space and PC
card memory space accesses will occur. There are five memory windows that can be used
independently.
The memory windows are enabled and disabled using the Mapping Enable register (see
To specify where in the PCI space a memory window is mapped, start and end addresses are
specified. A memory window is selected whenever the appropriate Memory Map Enable bit
(see “Mapping Enable”) is set and the following conditions are true:
— The PCI address is greater than or equal to the appropriate System Memory Map Start
Address register (see “System Memory Map 0-4 Start Address Low” on page 65).
— The PCI address is less than or equal to the appropriate System Memory Map End
Address register (see “System Memory Map 0-4 End Address Low”).
— The System Memory Map Upper Address register (see “System Memory Map 0-4
Upper Address” on page 78) is equal to the upper PCI address.
Start and end addresses are specified with PCI Address bits 31-12. This sets the minimum size
of a memory window to 4K bytes. Memory windows are specified in the PCI memory address
space.
To ensure proper operation, none of the memory windows can overlap in the PCI address
space.
9.1
System Memory Map 0-4 Start Address Low
There are five separate System Memory Map Start Address Low registers, each with identical
fields. These registers are located at the following indexes:
Index
(Socket A)System Memory Map Start Address Low
10h
System Memory Map 0 Start Address Low
18h
System Memory Map 1 Start Address Low
20h
System Memory Map 2 Start Address Low
28h
System Memory Map 3 Start Address Low
30h
System Memory Map 4 Start Address Low
Register Name: System Memory Map 0-4 Start Address Low
Index: 10h, 18h, 20h, 28h, 30h
Register Per: socket
Register Compatibility Type: 365
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Start Address 19-12
RW:00000000
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