F81865F View Datasheet(PDF) - Feature Integration Technology Inc.

Part Name

Description

Manufacturer

F81865F

Super IO with 6 UARTs

Feature Integration Technology Inc. 

F81865

DSKCHG#

INt,s5v

Diskette change. This signal is active low at power on

and whenever the diskette is removed.

21

GPIO64

I/OOD12 VCC General Purpose IO.

Data Set Ready. An active low signal indicates the

DSR5#

INt,5v

modem or data set is ready to establish a

communication link and transfer data to the UART.

6.4 UART

Pin No.

Pin Name

120

DCD1#

121

RI1#

122

CTS1#

DTR1#

123

PWM_DUTY_T

RAP

RTS1#

124

I2C_ADDR_TR

AP

125

DSR1#

SOUT1

126

Config4E_2E

127

SIN1

Type

INt,5v

INt,5v

INt,5v

O8,u47,5v

INt,5v

O8,u47,5v

INt,5v

INt,5v

O8,u47,5v

INt,5v

INt,5v

PWR

VCC

VCC

Description

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.

VCC Clear To Send is the modem control input.

VCC

VCC

VCC

VCC

VCC

VCC

UART 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.

Power on strapping pin:

1(Default): (Internal pull high)

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

0: (External pull down)

Power on fan speed default duty is 100%.(PWM)

UART Request To Send. An active low signal informs the

modem or data set that the controller is ready to send

data. Internal 47k ohms pulled high and disable after

power on strapping.

Power on strapping pin:

1: (internal pull high, default)

Power on I2C slave address is 8’h5C.

0: (external pull down)

Power on I2C slave address is 8’h5A.

Data Set Ready. An active low signal indicates the

modem or data set is ready to establish a

communication link and transfer data to the UART.

UART Serial Output. Used to transmit serial data out to

the communication link. Internal 47k ohms pulled high

and disable after power on strapping.

Power on strapping:

1(Default)Configuration register:4E/4F

VCC

0 Configuration register:2E/2F

UART Serial Input. Used to receive serial data through

the communication link.

13

May, 2010

V0.28P

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