參數(shù)資料
型號: PCI1520I
廠商: Texas Instruments, Inc.
英文描述: PC CARD CONTROLLERS
中文描述: PC卡控制器
文件頁數(shù): 121/138頁
文件大小: 745K
代理商: PCI1520I
61
6 CardBus Socket Registers (Functions 0 and 1)
The
1997 PC Card Standard
requires a CardBus socket controller to provide five 32-bit registers that report and
control socket-specific functions. The PCI1520 provides the CardBus socket/ExCA base-address register (PCI offset
10h, see Section 4.12) to locate these CardBus socket registers in PCI memory address space. Each socket has a
separate base address register for accessing the CardBus socket registers (see Figure 61). Table 61 gives the
location of the socket registers in relation to the CardBus socket/ExCA base address.
The PCI1520 implements an additional register at offset 20h that provides power management control for the socket.
CardBus Socket/ExCA Base Address
16-Bit Legacy-Mode Base Address
10h
44h
NOTE: The CardBus socket/ExCA base address mode register is separate for functions 0 and 1.
PCI1520 Configuration Registers
CardBus
Socket A
Registers
Host
Memory Space
00h
ExCA
Registers
Card A
20h
800h
844h
Offset
CardBus
Socket B
Registers
Host
Memory Space
00h
ExCA
Registers
Card B
20h
800h
844h
Offset
Offset
Figure 61. Accessing CardBus Socket Registers Through PCI Memory
Table 61. CardBus Socket Registers
REGISTER NAME
OFFSET
Socket event
00h
Socket mask
04h
Socket present-state
08h
Socket force event
0Ch
Socket control
10h
Reserved
14h1Ch
Socket power-management
20h
A bit description table, typically included when a register contains bits of more than one type or purpose, indicates
bit field names, which appear in the signal column; a detailed field description, which appears in the function column;
and field access tags, which appear in the type column of the bit description table. Table 42 describes the field
access tags.
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