參數(shù)資料
型號: PCI1620PDV
英文描述: Controller Miscellaneous - Datasheet Reference
中文描述: 控制器雜項-數(shù)據(jù)表參考
文件頁數(shù): 75/164頁
文件大小: 720K
代理商: PCI1620PDV
4
7
4.12 CardBus Socket Registers/ExCA Base Address Register
This register is programmed with a base address referencing the CardBus socket registers and the memory-mapped
ExCA register set. Bits 31
12 are read/write, and allow the base address to be located anywhere in the 32-bit PCI
memory address space on a 4-Kbyte boundary. Bits 11
0 are read-only, returning 0s when read. When software
writes all 1s to this register, the value read back is FFFF F000h, indicating that at least 4K bytes of memory address
space are required. The CardBus registers start at offset 000h, and the memory-mapped ExCA registers begin at
offset 800h. This register is not shared by functions 0 and 1, so the system maps each socket control register
separately.
Bit
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Name
CardBus socket registers/ExCA base address
Type
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name
CardBus socket registers/ExCA base address
Type
RW
RW
RW
RW
R
R
R
R
R
R
R
R
R
R
R
R
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Register:
Offset:
Type:
Default:
CardBus socket registers/ExCA base address
10h
Read-only, Read/Write
0000 0000h
4.13 Capability Pointer Register
The capability pointer register provides a pointer into the PCI configuration header where the PCI power management
register block resides. PCI header doublewords at A0h and A4h provide the power management (PM) registers. Each
socket has its own capability pointer register. This register is read-only and returns A0h when read.
Bit
7
6
5
4
3
2
1
0
Name
Capability pointer
Type
R
R
R
R
R
R
R
R
Default
1
0
1
0
0
0
0
0
Register:
Offset:
Type:
Default:
Capability pointer
14h
Read-only
A0h
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