F71882FG datasheet(13/130 Pages) FINTEK

13 / 130 page

May, 2008

V0.28P

-7-

F71882

DRVA#

OD24

VCC

Drive Select A. When set to 0, this pin enables disk

drive A. This is an open drain output.

WDATA#

OD24

VCC

Write data. This logic low open drain writes

pre-compensation serial data to the selected FDD. An

open drain output.

DIR#

OD24

VCC

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

Logic 1 = outward motion

Logic 0 = inward motion

STEP#

OD24

VCC

Step output pulses. This active low open drain output

produces a pulse to move the head to another track.

HDSEL#

OD24

VCC

Head select. This open drain output determines which

disk drive head is active.

Logic 1 = side 0

Logic 0 = side 1

WGATE#

OD24

VCC

Write enable. An open drain output.

RDATA#

INts5v

VCC

The read data input signal from the FDD.

TRK0#

INts5v

VCC

Track 0. This Schmitt-triggered input from the disk

drive is active low when the head is positioned over

the outermost track.

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.

WPT#

INts5v

VCC

Write protected. This active low Schmitt input from the

disk drive indicates that the diskette is write-protected.

DSKCHG#

INts5v

VCC

Diskette change. This signal is active low at power on

and whenever the diskette is removed.

6.4

UART and SIR

Pin No.

Pin Name

Type

PWR

Description

IRTX

O12

Infrared Transmitter Output.

GPIO42

I/OOD12t

VCC

General Purpose IO

IRRX

INts

Infrared Receiver input.

GPIO43

I/OOD12t

VSB

General Purpose IO.

118

DCD1#

INt5v

VCC

Data Carrier Detect. An active low signal indicates the

modem or data set has detected a data carrier.

119

RI1#

INt5v

VCC

Ring Indicator. An active low signal indicates that a ring

signal is being received from the modem or data set.

120

CTS1#

INt5v

VCC

Clear To Send is the modem control input.

DTR1#

O8-u47,5v

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.

121

FAN60_100

INt5v

VCC

Power on strapping pin:

1(Default): (Internal pull high)

Power on fan speed default duty is 60%.(PWM)

0: (External pull down)

F71882FG Datasheet(PDF) 13 Page - Feature Integration Technology Inc.

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