F81865F View Datasheet(PDF) - Feature Integration Technology Inc.
Part Name
Description
Manufacturer
F81865F Datasheet PDF : 128 Pages
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F81865
DIR#
OD14
Direction of the head step motor. An open drain output.
Logic 1 = outward motion
Logic 0 = inward motion
13
GPIO54
I/OOD14 VCC General Purpose IO.
Ring Indicator. An active low signal indicates that a
RI6#
INt,5v
ring signal is being received from the modem or data
set.
STEP#
OD14
Step output pulses. This active low open drain output
produces a pulse to move the head to another track.
14
GPIO55
I/OOD14 VCC General Purpose IO.
CTS6#
INt,5v
Clear To Send is the modem control input.
Head select. This open drain output determines which
HDSEL#
OD14
disk drive head is active.
Logic 1 = side 0
Logic 0 = side 1
15
VCC
GPIO56
I/OOD14
General Purpose IO.
DTR6#
O14
UART Data Terminal Ready. An active low signal
informs the modem or data set that controller is ready
to communicate.
WGATE#
OD14
Write enable. An open drain output.
GPIO57
I/OOD14
General Purpose IO.
16
VCC Data Set Ready. An active low signal indicates the
DSR6#
INt,5v
modem or data set is ready to establish a
communication link and transfer data to the UART.
RDATA#
INts5v
The read data input signal from the FDD.
17
GPIO60
I/OOD12 VCC General Purpose IO.
Data Carrier Detect. An active low signal indicates
DCD5#
INt,5v
the modem or data set has detected a data carrier.
TRK0#
INt,5v
Track 0. This Schmitt-triggered input from the disk
drive is active low when the head is positioned over
the outermost track.
18
GPIO61
I/OOD12 VCC General Purpose IO.
Ring Indicator. An active low signal indicates that a
RI5#
INt,5v
ring signal is being received from the modem or data
set.
This Schmitt-triggered input from the disk drive is
INDEX#
INst,5v
active low when the head is positioned over the
19
VCC beginning of a track marked by an index hole.
GPIO62
I/OOD12
General Purpose IO.
CTS5#
WPT#
INt,5v
INst,5v
Clear To Send is the modem control input.
Write protected. This active low Schmitt input from the
disk drive indicates that the diskette is write-protected.
20
GPIO63
I/OOD12 VCC General Purpose IO.
UART Data Terminal Ready. An active low signal
DTR5#
O12
informs the modem or data set that controller is ready
to communicate.
12
May, 2010
V0.28P
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