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參數資料
型號: W83626F
廠商: WINBOND ELECTRONICS CORP
英文描述: LPC-to-ISA Bridge
中文描述: 線性預測到的ISA橋
文件頁數: 9/34頁
文件大小: 343K
代理商: W83626F
LPC TO ISA BRIDGE SET
W83626F/W83626D
PRELIMINARY
Publication Release Date: Feb 2000
- 7 - Revision 0.50
ISA Interface Signals , continued
SYMBOL
PIN
IRQ4
97
I/O
INt
INt
INt
INt
INt
INt
INt
INt
INt
INt
INt
FUNCTION
Parallel Interrupt Requested Input 4.
IRQ5
96
Parallel Interrupt Requested Input 5.
IRQ6
94
Parallel Interrupt Requested Input 6.
IRQ7
93
Parallel Interrupt Requested Input 7.
IRQ9
78
Parallel Interrupt Requested Input 9.
IRQ10
10
Parallel Interrupt Requested Input 10.
IRQ11
9
Parallel Interrupt Requested Input 11.
IRQ12
8
Parallel Interrupt Requested Input 12.
IRQ14
6
Parallel Interrupt Requested Input 14.
IRQ15
7
Parallel Interrupt Requested Input 15.
DMA Request 0.
The DREQ signal indicates that either a slave
DMA device is requesting DMA services, or an ISA bus master is
requesting use of the ISA bus.
DMA Request 1.
DRQ0
3
DRQ1
90
INt
INt
INt
INt
INt
INt
DRQ2
79
DMA Request 2.
DRQ3
88
DMA Request 3.
DRQ5
1
DMA Request 5.
DRQ6
127
DMA Request 6.
DRQ7
124
DMA Request 7.
DACK0#
4
OUT24
DMA Acknowledge 0.
The DACK# signal indicates that either a
DMA channel or an ISA bus master has been granted the ISA bus.
DMA Acknowledge 1.
DMA Acknowledge 2.
DMA Acknowledge 3.
DMA Acknowledge 5.
DMA Acknowledge 6.
During power-on reset,this is pulled-hi internally(Select 4Eh) and
is defined as HEFRAS which provides the power-on value for
CR3 bit4 .A 4.7k ohm is recommended if intends to pull down
.(Select 2Eh)
DMA Acknowledge 7.
Terminal Count.
The W83628F asserts TC to DMA slaves as a
terminal count indicator.
DACK1#
DACK2#
DACK3#
DACK5#
DACK6#
HERFRA
89
99
87
2
127
OUT24
OUT24
OUT24
OUT24
I/OD24t
DACK7#
TC
126
100
OUT24
OUT24
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