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

Part Name

Description

Manufacturer

F81865F

Super IO with 6 UARTs

Feature Integration Technology Inc. 

F81865

Data Carrier Detect. An active low signal indicates the

1

DCD2#

INt,5v

VCC

modem or data set has detected a data carrier.

Ring Indicator. An active low signal indicates that a ring

2

RI2#

INt5v

VCC signal is being received from the modem or data set.

3

CTS2#

INt5v

VCC Clear To Send is the modem control input.

UART Data Terminal Ready. An active low signal informs

DTR2#

O8,u47,5v

VCC the modem or data set that controller is ready to

communicate. Internal 47k ohms pulled high and disable

after power on strapping.

4

Power on strapping pin:

1(Default): (Internal pull high)

FWH_TRAP

INt,5v

VCC

FWH is enabled.

0: (External pull down)

FWH is disabled.

UART Request To Send. An active low signal informs the

RTS2#

O8,u47,5v

modem or data set that the controller is ready to send

VCC

data. Internal 47k ohms pulled high and disable after

power on strapping.

5

Power on strapping pin:

1: (internal pull high, default)

PWM_DC

INt5v

VCC

Fan control is PWM mode.

0: (external pull down)

Fan control is linear mode (DAC output).

Data Set Ready. An active low signal indicates the

6

DSR2#

INt,5v

VCC 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

SOUT2

O8,u47,5v

the communication link. Internal 47k ohms pulled high

and disable after power on strapping.

Power on strapping:

7

VCC

1(Default internal pull high)

SPI_TRAP

INt,5v

SPI is disabled.

0 (external pull down)

SPI is enabled.

UART Serial Input. Used to receive serial data through

8

SIN2

INt,5v

VCC

the communication link.

Data Carrier Detect. An active low signal indicates the

36

DCD3#

INt,5v

VCC modem or data set has detected a data carrier.

GPIO30

I/OOD8

General Purpose IO.

Ring Indicator. An active low signal indicates that a ring

37

RI3#

INt5v

VCC signal is being received from the modem or data set.

GPIO31

I/OOD8

General Purpose IO.

38

CTS3#

INt,5v

Clear To Send is the modem control input.

VCC

GPIO32

I/OOD8

General Purpose IO.

UART Data Terminal Ready. An active low signal informs

39

VCC

DTR3#

O8

the modem or data set that controller is ready to

14

May, 2010

V0.28P

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