F71882
9
DRVA#
OD24
OD24
VCC
VCC
Drive Select A. When set to 0, this pin enables disk
drive A. This is an open drain output.
Write data. This logic low open drain writes
pre-compensation serial data to the selected FDD. An
open drain output.
10
WDATA#
11
DIR#
OD24
VCC
Direction of the head step motor. An open drain output.
Logic 1 = outward motion
Logic 0 = inward motion
12
13
STEP#
OD24
OD24
VCC
VCC
Step output pulses. This active low open drain output
produces a pulse to move the head to another track.
Head select. This open drain output determines which
disk drive head is active.
HDSEL#
Logic 1 = side 0
Logic 0 = side 1
14
15
16
WGATE#
RDATA#
TRK0#
OD24
INts5v
INts5v
VCC
VCC
VCC
Write enable. An open drain output.
The read data input signal from the FDD.
Track 0. This Schmitt-triggered input from the disk
drive is active low when the head is positioned over
the outermost track.
17
INDEX#
INts5v
VCC
This Schmitt-triggered input from the disk drive is
active low when the head is positioned over the
beginning of a track marked by an index hole.
Write protected. This active low Schmitt input from the
disk drive indicates that the diskette is write-protected.
Diskette change. This signal is active low at power on
and whenever the diskette is removed.
18
19
WPT#
INts5v
INts5v
VCC
VCC
DSKCHG#
6.4 UART and SIR
Pin No.
Pin Name
Type
PWR Description
27
IRTX
O12
VCC
Infrared Transmitter Output.
GPIO42
IRRX
GPIO43
DCD1#
I/OOD12t
INts
I/OOD12t
INt5v
General Purpose IO
Infrared Receiver input.
General Purpose IO.
28
VSB
VCC
VCC
118
119
Data Carrier Detect. An active low signal indicates the
modem or data set has detected a data carrier.
Ring Indicator. An active low signal indicates that a ring
signal is being received from the modem or data set.
Clear To Send is the modem control input.
UART 1 Data Terminal Ready. An active low signal
informs the modem or data set that controller is ready to
communicate. Internal 47k ohms pulled high and disable
after power on strapping.
RI1#
INt5v
120
121
CTS1#
DTR1#
INt5v
O8-u47,5v
VCC
VCC
FAN60_100
INt5v
Power on strapping pin:
1(Default): (Internal pull high)
Power on fan speed default duty is 60%.(PWM)
0: (External pull down)
-7-
May, 2008
V0.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
