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參數資料
| 型號： | W83769 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | LOCAL BUS IDE SOLUTION |
| 中文描述： | 局部總線IDE解決方案 |
| 文件頁數： | 16/21頁 |
| 文件大?。?/td> | 163K |
| 代理商： | W83769 |
W83769
- 16 -
Signal Description, continued
NAME
NO.
TYPE
DESCRIPTION
AD31
0
92
99,
3
10
22
29,
32
39
B
These bidirectional signals are the multiplexed Address and
Data on the PCI bus.
DIRECT IDE DRIVE INTERFACE
DRST
78
O
Reset signal to the IDE drives.
DCS0
53
B
Chip select signal for IDE drive 0, 1 task file registers 1F0H
1F7H. During power-on reset, this pin is an input.
DCS1
54
B
Chip select signal for IDE drive 0, 1 task file registers 3F6H
and 3F7H. During power-on reset, this pin is an input.
DCS2
45
O
Chip select signal for IDE drive 2, 3 task file registers 170H
177H.
DCS3
44
O
Chip select signal for IDE drive 2, 3 task file registers 376H
and 377H.
DSA0
2
63, 64, 67
B
These signals are the IDE disk drive address bits 0-2.
DSA0
2 are to be used together with
DCS0
the individual IDE task file registers. During power-on reset,
these pins are inputs.
3
to decode
DIOR
68
O
Disk IO read command signal to initiate a read access from
IDE drives.
DIOW
69
O
Disk IO write command signal to initiate a write access to
IDE drives.
DIOCS16
51
I
IO cycle 16-bit select input from the IDE drives. When this
pin is driven low, it indicates the IDE drives are ready to
send/receive a 16-bit word.
DRDY
52
I
Disk drive ready signal. Indicates that the IDE drives have
completed the current command cycle.
DIRQ
50
I
Interrupt request from the IDE drives to generate the HIRQ
output.
DSKCHG
49
I
DSKCHG
is connected to pin 34 of a floppy disk connector.
This active low input pin indicates the status of port 3F7, bit
7, which is reported from the floppy disk controller.
DSD15
0
55
62,
77
70
B
16-bit disk data bus.
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