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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： | 5/41頁 |
| 文件大?。?/td> | 334K |
| 代理商： | W83759A |
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W83759A
Publication Release Date: May 1995
- 5 -
Revision A1
PIN DESCRIPTION
SYMBOL
PIN
TYPE
DESCRIPTION
VL-Bus Interface
ADV
100
I-PU
Advanced mode indicator.
When high, chip is in W83759A mode. When low, chip is in
W83759 mode.
LCLK
89
I
VL-Bus clock.
SYSRST
99
I
System reset.
When active, the power-on setting pin acts as input.
LADS
95
I
Address data strobe.
An active low input signal indicates that there is a valid address
and command on the bus.
IORDY
/
HDC
98
I
In W83759A mode: Enhanced IDE IORDY flow control input. Used
to throttle disk's PIO data transfers to improve PIO mode.
In W83759 mode: Host data or code status. Used to distinguish
between IO and interrupt or halt cycles.
HMIO
97
I-PU
Host memory or I/O status.
Used to distinguish between memory and I/O cycles.
HWR
96
I
Host write or read status.
Used to distinguish between write and read cycles.
BE2
BE0
1
2
I
Byte enable bits 2 and 0 from the host CPU address bus.
These active low inputs specify which bytes will be valid for host
read and write data transfers. When
BE2
is low, the host performs
a 32-bit hard disk data transfer cycle when
LDEV
is active.
LDEV
92
O
Local device.
An active low output signal which indicates that the current host
CPU command cycle is a valid W83759A I/O address (1F0h or
170h).
LRDY
93
Tri-O
Local ready.
An active low output that indicates when a CPU transfer has been
completed. During a cycle
LRDY
will first be enabled and driven
high. When the cycle is completed,
LRDY
will immediately be
pulled low and will remain active for one T-state. Then it will drive
high for one T-state before finally being disabled to end the
sequence.
This signal is shared with all other VL-Bus targets and driven by
W83759A only during cycles W83759A has claimed as its own.
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| W83768 | I/O COUPLER |
| W83769 | LOCAL BUS IDE SOLUTION |
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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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| W83773G | 制造商:Nuvoton Technology Corp 功能描述:IC H/W MONITOR 8TSSOP |
| W83775G | 制造商:Nuvoton Technology Corp 功能描述:IC H/W MONITOR 8TSSOP |
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