F71869 datasheet(11/116 Pages) FINTEK

11 / 116 page

Fintek

Feature Integration Technology Inc.

2009

V1.1

F71869

STEP#

OD14-5v

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/OD14st5v

Default General Purpose IO.

HDSEL#

OD14-5v

VCC

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/OD14st5v

Default General Purpose IO.

WGATE#

OD14-5v

VCC

Write enable. An open drain output.

FDC function is selected by register setting.

GPIO50

I/OOD12st5v

Default General Purpose IO.

RDATA#

INst5v

VCC

The read data input signal from the FDD.

FDC function is selected by register setting.

GPIO51

I/OOD12st5v

Default General Purpose IO.

TRK0#

INst5v

VCC

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/OOD12st5v

Default General Purpose IO.

INDEX#

INst5v

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.

FDC function is selected by register setting.

GPIO53

I/OOD12st5v

Default General Purpose IO.

WPT#

INst5v

VCC

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/OOD12st5v

Default General Purpose IO.

DSKCHG#

INst5v

VCC

Diskette change. This signal is active low at power on and

whenever the diskette is removed.

FDC function is selected by register setting.

4.4

UART and SIR

Pin No.

Pin Name

Type

PWR

Description

GPIO42

I/OOD12t5v

Default General Purpose IO.

IRTX

O12

VCC

Infrared Transmitter Output. The function is selected by

GPIO43

I/OOD12t5v

Default General Purpose IO.

IRRX

INst5v

VCC

Infrared Receiver input. The function is selected by register

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