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參數資料
型號: W83877AF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數: 20/171頁
文件大小: 1634K
代理商: W83877AF
W83877AF
Publication Release Date: Dec. 1996
Preliminary Version 0.52
- 18 -
1.5 IDE and FDC Interface, continued
SYMBOL
PIN
82
I/O
OD
24
FUNCTION
STEP
Step output pulses. This active low open drain output produces a
pulse to move the head to another track.
This schmitt input from the disk drive is active low when the
head is positioned over the beginning of a track marked by an
index hole. This input pin is pulled up internally by an
approximately 1K ohm resistor. The resistor can be disabled by
bit 4 of CR6 (FIPURDWN).
Track 0. This schmitt input from the disk drive is active low when
the head is positioned over the outermost track. This input pin is
pulled up internally by an approximately 1K ohm resistor. The
resistor can be disabled by bit 4 of CR6 (FIPURDWN).
INDEX
81
IN
cs
TRAK0
78
IN
cs
WP
77
IN
cs
Write protected. This active low schmitt input from the disk drive
indicates that the diskette is write-protected. This input pin is
pulled up internally by an approximately 1K ohm resistor. The
resistor can be disabled by bit 4 of CR6 (FIPURDWN).
RDATA
74
IN
cs
The read data input signal from the FDD. This input pin is pulled
up internally by an approximately 1K ohm resistor. The resistor
can be disabled by bit 4 of CR6 (FIPURDWN).
DSKCHG
76
IN
cs
Diskette change. This signal is active low at power on and
whenever the diskette is removed. This input pin is pulled up
internally by an approximately 1K ohm resistor. The resistor can
be disabled by bit 4 of CR6 (FIPURDWN).
MOA
79
OD
24
Motor A On. When set to 0, this pin enables disk drive 0. This is
an open drain output.
MOB
80
OD
24
Motor B On. When set to 0, this pin enables disk drive 1. This is
an open drain output.
DSA
83
OD
24
Drive Select A. When set to 0, this pin enables disk drive A. This
is an open drain output.
DSB
84
OD
24
Drive Select B. When set to 0, this pin enables disk drive B. This
is an open drain output.
V
DD
15,
56
+5 Volt power supply for the digital circuitry
GND
25,
40,
65,
90
Ground
相關PDF資料
PDF描述
W83877ATD enhanced version from Winbonds most popular I/O chip W83877F
W83877ATF enhanced version from Winbonds most popular I/O chip W83877F
W83877 WINBOND I/O
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相關代理商/技術參數
參數描述
W83877ATD 制造商:WINBOND 制造商全稱:Winbond 功能描述:enhanced version from Winbonds most popular I/O chip W83877F
W83877ATF 制造商:WINBOND 制造商全稱:Winbond 功能描述:enhanced version from Winbonds most popular I/O chip W83877F
W83877F 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83877TD 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83877TF 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O