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參數(shù)資料
| 型號(hào)： | PD6710 |
| 廠商： | Intel Corp. |
| 英文描述： | ISA-to-PC-Card (PCMCIA) Controllers |
| 中文描述： | ISA -到- PC卡（PCMCIA）的控制器 |
| 文件頁(yè)數(shù)： | 41/138頁(yè) |
| 文件大小： | 723K |
| 代理商： | PD6710 |
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ISA-to-PC-Card (PCMCIA) Controllers
—
PD6710/
’
22
Datasheet
41
6.0
Operation Registers
The PD67XX internal registers are accessed through a pair of Operation registers
—
an
Index
register and a
Data
register. The
Index
register is accessed at address 03E0h, and the
Data
register
is accessed at 03E1h.
6.1
Index
The
Data
register is accessed at 03E1h.
Bits 5:0
—
Register Index
These bits determine which of the 64 possible socket-specific registers will be accessed when the
Data
register is next accessed by the processor. Note that some values of the Register Index field
are reserved (see
Table 11 on page 42
).
Bit 6
—
Socket Index
This bit determines which set of socket-specific registers is currently selected. When this bit is
‘
0
’
,
a Socket A register is selected. When this bit is
‘
1
’
, a Socket B register is selected. Note that the
PD6710 supports one socket, and the PD6722 supports two sockets.
Bit 7
—
Device Index
In systems where two PD67XXs are used, this bit differentiates between them.
The
Index
register value determines which internal register should be accessed (read or written) in
response to each CPU access of the
Data
register. Each of the possible PC Card sockets is allocated
64 of the 256 locations in the internal register index space
Register Name: Index
Index: n/a
Register Per:
chip
Register Compatibility Type: 365
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Device Index
Socket Index
Register Index
RW:0
RW:0
RW:000000
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