參數(shù)資料
型號: PCI1221GHK
廠商: Texas Instruments, Inc.
英文描述: KPT 11C 11#16 SKT PLUG
中文描述: PC卡控制器
文件頁數(shù): 80/123頁
文件大?。?/td> 1659K
代理商: PCI1221GHK
80
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
ExCA compatibility registers (functions 0 and 1)
The ExCA registers implemented in the
PCI1221
are register-compatible with the Intel 82365SL–DF PCMCIA
controller. ExCA registers are identified by an offset value that is compatible with the legacy I/O index/data
scheme used on the Intel 82365 ISA controller. The ExCA registers are accessed through this scheme by writing
the register offset value into the index register (I/O base) and reading or writing the data register (I/O base +
1). The I/O base address used in the index/data scheme is programmed in the PC Card 16-Bit I/F legacy mode
base address register, which is shared by both card sockets. The offsets from this base address run contiguous
from 00h to 3Fh for socket A, and from 40h to 7Fh for socket B. Refer to Figure 21 for an ExCA I/O mapping
illustration.
CardBus Socket/ExCA Base Address
16-Bit Legacy-Mode Base Address
10h
44h
00h
3Fh
40h
Offset
Index
Data
Host I/O Space
PC Card A
ExCA
Registers
PC Card B
ExCA
Registers
7Fh
NOTE: The 16-bit legacy mode base address register is shared by functions 0 and 1 as indicated by the shading.
PCI1221 Configuration Registers
Offset
Figure 21. ExCA Register Access Through I/O
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相關(guān)代理商/技術(shù)參數(shù)
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