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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 |
| 文件頁數(shù)： | 21/138頁 |
| 文件大?。?/td> | 723K |
| 代理商： | PD6710 |
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ISA-to-PC-Card (PCMCIA) Controllers
—
PD6710/
’
22
Datasheet
21
-WE
Write Enable
: For non-DMA transfers,
this signal goes active (low) to indicate
a memory write to the socket.
During a DMA read (when -IOWR is
active), this signal goes low if the ISA
output TC is active (high), indicating to
the card that the system
’
s terminal
count signal is active. During DMA
writes (when -IORD is active), this
output remains high.
37
37
99
1
O-TS
2 or 3
2 mA
-IORD
I/O Read
: This output is driven low for I/
O reads from the socket.
28
26
90
1
O-TS
2 or 3
2 mA
-IOWR
I/O Write
: This output is driven low for I/
O writes to the socket.
30
29
92
1
O-TS
2 or 3
2 mA
WP/
-IOIS16
Write Protect / I/O Is 16-Bit
: In
Memory Card Interface mode (Interrupt
and General Control register, bit 5 is
equal to
‘
0
’
), this input is the status of
the PC card write protect switch.
In I/O Card Interface mode, a low on
this input indicates that the I/O address
being accessed is capable of 16-bit
operation.
In DMA mode, this pin can be
programmed as the -DREQ input from
a DMA-capable PC Card.
69
68
131
1
I-PU
2 or 3
–
-INPACK
Input Acknowledge
: This input
indicates to the PD67XX that the PC
Card supports I/O access at the current
address. A PC Card activates this input
during IORD cycles to which the card
can respond.
In DMA mode, this pin can be
programmed as the -DREQ input from
a DMA-capable PC Card.
57
56
119
1
I-PU
2 or 3
–
RDY/
-IREQ
Ready / Interrupt Request
: In Memory
Card Interface mode, this input is
readable as the status of bit 5 of the
Interface Status
register, which is
used by a PC Card to signal system
software of its ready or busy state.
In I/O Card Interface mode, this active-
low input indicates an interrupt request.
39
39
101
1
I-PU
2 or 3
–
-WAIT
Wait
: This input indicates to the
PD67XX that the current card access
cycle is to be extended until this signal
becomes inactive (high).
55
54
116
1
I-PU
2 or 3
–
Table 2. Socket Interface Pins
(Sheet 2 of 4)
Pin Name
1
Description
2
Pin Number
Qty.
I/O
Pwr.
Drive
PD6710
PD6722
Socket A
Socket B
1.
1
To differentiate the sockets, all PD6722 pin names have either A_ or B_ prepended to the pin names indicated. For example,
A_A[25:0] and B_A[25:0] are the independent address buses to the sockets.
2.
2
When a socket is configured as an ATA drive interface, socket interface pin functions change. See
Table 17 on page 88
.
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