IT8673F View Datasheet(PDF) - ITE Tech. INC.
Part Name
Description
Manufacturer
IT8673F Datasheet PDF : 128 Pages
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IT8673F
Pin(s) No.
Signal
112 - 105
PD[0:7]
I/O Power
DIO24 VCC
113
SLIN#
DIO24 VCC
114
INIT#
DIO24 VCC
115
ERR#
DI
VCC
116
AFD#
DIO24 VCC
117
STB#
DIO24 VCC
Floppy Disk Controller Signals
5
DENSEL#
DO40 VCC
6
MOTEA#
DO40 VCC
7
DRVB#
DO40 VCC
8
DRVA#
DO40 VCC
9
MOTEB#
DO40 VCC
11
DIR#
DO40 VCC
12
STEP#
DO40 VCC
13
WDATA#
DO40 VCC
14
WGATE#
DO40 VCC
15
SIDE1#
DO40 VCC
16
INDEX#
DI
VCC
17
TK00#
DI
VCC
18
WPT#
DI
VCC
19
RDATA#
DI
VCC
20
DSKCHG#
DI
VCC
Keyboard Controller Signals
79
KDAT
DIOD16
80
KCLK
DIOD16
81
MDAT
DIOD16
82
MCLK
DIOD16
83
KRST#
DOD8
86
GA20
DOD8
VCCH
VCCH
VCCH
VCCH
VCCH
VCCH
Description
Parallel Port Data Bus 0-7. This bus provides a byte-wide input or
output to the system. The eight lines are held in a high impedance
state when the port is deselected.
Printer Select Input #. When low, the printer is selected. This signal
is derived from the complement of bit 3 of the printer control register.
Printer Initialize #, active low. This signal is derived from bit 2 of the
printer control register, and is used to initialize the printer.
Printer Error #, when active low it indicates that the printer has
encountered an error. The error message can be read from bit 3 of
the printer status register.
Printer AutoLline feed #, active low. This signal is derived from the
complement of bit 1 of the printer control register, and is used to
advance one line after each line is printed.
Printer Strobe #, active low. This signal is the complement of bit 0 of
the printer control register, and is used to strobe the printing data into
the printer.
Density Select #. DENSEL# is high for high data rates (500Kbps,
1Mbps). DENSEL# is low for low data rates (250Kbps, 300Kbps)
FDD Motor A Enable #. Active low.
FDD Drive B Enable #. Active low.
FDD Drive A Enable #. Active low.
FDD Motor B Enable #. Active low.
FDC Head Direction #. Step in when low, step out when high during
a SEEK operation.
FDC Step Pulse #. Active low.
FDC Write Serial Data to the drive #. Active low.
FDC Write Gate Enable #. Active low.
Floppy Disk Side 1 Select #. Active low.
FDC Index #. Active low. Indicates the beginning of a disk track.
Floppy Disk Track 0 #. Active low. Indicates that the head of the
selected drive is on track 0.
FDD Write Protect #. Active low. Indicates that the disk of the
selected drive is write-protected.
FDC Read Disk Data #. Active low, serial data input from FDD
Floppy Disk Change #. Active low. This is an input pin that senses
whether the drive door has been opened or a diskette has been
changed.
Keyboard Data.
Keyboard Clock.
PS/2 Mouse Data.
PS/2 Mouse Clock.
Keyboard Reset #.
Gate Address 20.
9
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