国产精品成人VA在线观看-国产乱妇乱子视频在播放-国产日韩精品一区二区三区在线-国模精品一区二区三区

參數資料
型號: W83977CTF
廠商: WINBOND ELECTRONICS CORP
英文描述: Multi-Function I/O Port Controller(用于個人計算機的多功能輸入/輸出口控制器)
中文描述: 多功能I / O端口控制器(用于個人計算機的多功能輸入/輸出口控制器)
文件頁數: 25/161頁
文件大小: 1530K
代理商: W83977CTF
W83977EF/ CTF
PRELIMINARY
Publication Release Date: March 1999
-16 -
Revision A1
1.5 Multi-Mode Parallel Port, continued
SYMBOL
PIN
23
I/O
I/O
12t
FUNCTION
PD7
-
OD
12
PRINTER MODE: PD7
Parallel port data bus bit 7. Refer to description of the parallel
port for definition of this pin in ECP and EPP mode.
EXTENSION FDD MODE: This pin is a tri-state output.
EXTENSION 2FDD MODE: DSA2#
This pin is for Extension FDD A; its function is the same as the
DSA# pin of FDC.
1.6 FDC Interface
SYMBOL
PIN
I/O
FUNCTION
DRVDEN0
2
OD
24
OD
12
IO
12t
Drive Density Select bit 0.
DRVDEN1
GP10
(IRQIN1)
P12
SCI#
3
Drive Density Select bit 1. (CR2A bit 1_0 = 00, default)
General purpose I/O port 1 bit 0. (CR2A bit 1_0 = 01)
Alternate Function from GP10: Interrupt channel input.
KBC P12 I/O port. (CR2A bit 1_0 = 10)
System Control Interrupt (CR2A bit 1_0 = 11)
IO
12t
OUT
12t
OD
24
HEAD#
5
Head select. This open drain output determines which disk drive
head is active.
Logic 1 = side 0
Logic 0 = side 1
WE#
9
OD
24
OD
24
Write enable. An open drain output.
WD#
10
Write data. This logic low open drain writes pre-compensation
serial data to the selected FDD. An open drain output.
STEP#
11
OD
24
Step output pulses. This active low open drain output produces
a pulse to move the head to another track.
DIR#
12
OD
24
Direction of the head step motor. An open drain output.
Logic 1 = outward motion
Logic 0 = inward motion
MOB#
13
OD
24
Motor B On. When set to 0, this pin enables disk drive 1. This is
an open drain output.
相關PDF資料
PDF描述
W83977TF Multi-Function I/O Port Controller(用于個人計算機的多功能輸入/輸出口控制器)
W83C42 Keyboard Controller(鍵盤控制器)
W83C43 Keyboard Controller(鍵盤控制器)
W83C45 Keyboard Controller(鍵盤控制器)
W83C553F SYSTEM I/O CONTROLLER WITH PCI ARBITER
相關代理商/技術參數
參數描述
W83977CTF-AW 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PERIPHERAL (MULTIFUNCTION) CONTROLLER
W83977CTF-PW 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O
W83977EF 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND ISA I/O
W83977EF-AW 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND ISA I/O
W83977EF-PW 制造商:WINBOND 制造商全稱:Winbond 功能描述:WINBOND I/O