F71805F View Datasheet(PDF) - Feature Integration Technology Inc.

Part Name

Description

Manufacturer

F71805F

Super H/W Monitor + LPC IO

Feature Integration Technology Inc. 

41-38 LAD[3:0]

42

PCICLK

44

CLKIN

5.3 FDC

I/O12t

INts

INts

VCC

VCC

VCC

F71805

cycle.

These signal lines communicate address, control, and data

information over the LPC bus between a host and a

peripheral.

PCI clock input.

System clock input. According to the input frequency 48MHz.

Pin No. Pin Name

57

DENSEL#

58

MTRA#

60

DRVA#

62

WDATA#

63

DIR#

64

STEP#

65

HDSEL#

66

WGATE#

68

RDATA#

69

TRK0#

70

INDEX#

71

WPT#

72

DSKCHG#

Type

OD24

OD24

OD24

OD24

OD24

OD24

OD24

OD24

INts5V

INts5V

INts5V

INts5V

INts5V

PWR

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

Description

Drive Density Select.

Set to 1 - High data rate.(500Kbps, 1Mbps)

Set to 0 – Low data rate. (250Kbps, 300Kbps)

Motor A On. When set to 0, this pin enables disk drive 0.

This is an open drain output.

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.

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

Logic 1 = outward motion

Logic 0 = inward motion

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.

Logic 1 = side 0

Logic 0 = side 1

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.

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.

5.4 UART Port and SIR

Pin No.

82

83

118

Pin Name

IRTX

IRRX

DCD1#

119

RI1#

Type

O12

INts

INt5V

INt5V

PWR

VCC

VCC

VCC

VCC

Description

Infrared Transmitter Output.

Infrared Receiver input.

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.

7

Dec., 2006

V0.25P

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