F71869AD datasheet(13/156 Pages) FINTEK

13 / 156 page

Oct., 2011

V0.19P

F71869A

This is an open drain output.

FDC function is selected by register setting.

GPIO33

I/OD14st,5v

Default General Purpose IO.

WDATA#

OD14,5v

3VCC

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.

GPIO34

I/OD14st,5v

Default General Purpose IO.

DIR#

OD14,5v

3VCC

Direction of the head step motor. An open drain output. Logic

1 = outward motion

Logic 0 = inward motion

FDC function is selected by register setting.

GPIO35

I/OD14st,5v

Default General Purpose IO. (Suppot scan / make code

setting).

STEP#

OD14,5v

3VCC

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.

GPIO36

I/OD14st,5v

Default General Purpose IO. (Suppot scan code setting).

HDSEL#

OD14,5v

3VCC

Head select. This open drain output determines which disk

drive head is active.

Logic 1 = side 0

Logic 0 = side 1

FDC function is selected by register setting.

GPIO37

I/OD14st,5v

Default General Purpose IO. (Suppot scan code setting).

WGATE#

OD14,5v

3VCC

Write enable. An open drain output.

FDC function is selected by register setting.

GPIO50

I/OOD12st,5v

Default General Purpose IO. Support volume up control from

LPC (Suppot scan code setting).

RDATA#

INst,5v

3VCC

The read data input signal from the FDD.

FDC function is selected by register setting.

GPIO51

I/OOD12st,5v

Default General Purpose IO. Support volume down control

from LPC (Suppot scan code setting).

TRK0#

INst,5v

3VCC

Track 0. This Schmitt-triggered input from the disk drive is

active low when the head is positioned over the outermost

track.

FDC function is selected by register setting.

GPIO52

I/OOD12st,5v

Default General Purpose IO. Support mute control from LPC

(Suppot scan code setting).

INDEX#

INst,5v

3VCC

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.

GPIO53

I/OOD12st,5v

Default General Purpose IO. Support PWM up for FANCTL3

(Suppot scan code setting).

WPT#

INst,5v

3VCC

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.

GPIO54

I/OOD12st,5v

3VCC

Default General Purpose IO. Support PWM down for

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