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參數資料
型號: W83759A
廠商: WINBOND ELECTRONICS CORP
英文描述: ADVANCED VL-IDE DISK CONTROLLER
中文描述: 先進的VL - IDE磁盤控制器
文件頁數: 8/41頁
文件大小: 334K
代理商: W83759A
W83759A
- 8 -
Pin Description, continued
SYMBOL
PIN
TYPE
DESCRIPTION
EMD0
/
IDEIOW
71
I/O
-PU
When
SYSRST
is active, this is an input that latches on the rising
edge of
SYSRST
.
EMD0: This power-on-setting pin combines with EMD1 to set the
initial enhanced timing mode of hard disk access cycles when the
enhanced mode is selected via the POSS3 configuration register.
ATA PIO mode
2
3
3
4
Access Time
240 nS
180 nS
180 nS
120 nS
EMD1
1
1
0
0
EMD0
1
0
1
0
IDEIOW
: Drive I/O write. An active low output that enables data to
be written to the drive. The duration and repetition rate of IDEIOW
cycles are determined by the type of IDE drive, as specified by
IDEIOR.
MD1
/IDEA2,
MD0
/IDEA1
69
68
I/O
-PD
When
SYSRST
is active, these pins function as inputs and latch
on the rising edge of
SYSRST
.
MD1, MD0: ATA mode of IDE Drive. MD0 and MD1 are used to
select the hard disk access time.
ATA PIO mode
0
1
2
Access Time
600 nS
500 nS
400 nS
240 nS
EMD1
0
0
1
1
EMD0
0
1
0
1
0+
IDEA2, IDEA1: IDE drive address bits 2 and 1. Drive address bits 2
and 1 are outputs to the IDE connector for register selection in the
drive.
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相關代理商/技術參數
參數描述
W83768 制造商:WINBOND 制造商全稱:Winbond 功能描述:I/O COUPLER
W83769 制造商:WINBOND 制造商全稱:Winbond 功能描述:LOCAL BUS IDE SOLUTION
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