F71869A
This is an open drain output.
FDC function is selected by register setting.
GPIO33
WDATA#
GPIO34
I/OD14st,5v
OD14,5v
3VCC
3VCC
Default General Purpose IO.
Write data. This logic low open drain writes pre-compensation
serial data to the selected FDD. An open drain output.
FDC function is selected by register setting.
Default General Purpose IO.
10
11
I/OD14st,5v
Direction of the head step motor. An open drain output. Logic
1 = outward motion
DIR#
OD14,5v
Logic 0 = inward motion
FDC function is selected by register setting.
Default General Purpose IO. (Suppot scan / make code
setting).
3VCC
3VCC
GPIO35
I/OD14st,5v
12
13
Step output pulses. This active low open drain output produces
a pulse to move the head to another track.
FDC function is selected by register setting.
STEP#
OD14,5v
GPIO36
I/OD14st,5v
Default General Purpose IO. (Suppot scan code setting).
Head select. This open drain output determines which disk
drive head is active.
HDSEL#
OD14,5v
Logic 1 = side 0
Logic 0 = side 1
FDC function is selected by register setting.
Default General Purpose IO. (Suppot scan code setting).
GPIO37
I/OD14st,5v
OD14,5v
3VCC
3VCC
14
15
Write enable. An open drain output.
WGATE#
FDC function is selected by register setting.
Default General Purpose IO. Support volume up control from
LPC (Suppot scan code setting).
GPIO50
RDATA#
GPIO51
I/OOD12st,5v
INst,5v
The read data input signal from the FDD.
FDC function is selected by register setting.
Default General Purpose IO. Support volume down control
from LPC (Suppot scan code setting).
3VCC
3VCC
I/OOD12st,5v
Track 0. This Schmitt-triggered input from the disk drive is
active low when the head is positioned over the outermost
track.
16
17
TRK0#
GPIO52
INDEX#
INst,5v
I/OOD12st,5v
INst,5v
FDC function is selected by register setting.
Default General Purpose IO. Support mute control from LPC
(Suppot scan code setting).
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.
FDC function is selected by register setting.
Default General Purpose IO. Support PWM up for FANCTL3
(Suppot scan code setting).
3VCC
3VCC
GPIO53
WPT#
I/OOD12st,5v
18
19
Write protected. This active low Schmitt input from the disk
drive indicates that the diskette is write-protected.
FDC function is selected by register setting.
Default General Purpose IO. Support PWM down for
INst,5v
GPIO54
I/OOD12st,5v
13
Oct., 2011
V0.19P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
