F81216 datasheet(8/37 Pages) FINTEK

Part #	F81216

Description	LPC to 4 UART Datasheet

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Manufacturer	FINTEK [Feature Integration Technology Inc.]

Direct Link	http://www.fintek.com.tw/eng

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8 / 37 page

August, 2007

V0.32P

-4-

F81216

4.2 UART Interface

Pin No.

Pin Name

Type

Description

13

CTS4#

INt5V

Clear To Send is the modem control input.

14

DSR4#

INt5V

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.

15

RTS4#

I/O8t5V-d100

UART 4 Request To Send.

An active low signal informs the

modem or data set that the controller is ready to send data.

16

DTR4#

I/O8t5V-d100

UART 4 Data Terminal Ready.

An active low signal informs

the modem or data set that controller is ready to communicate.

17

SIN4

INt5V

Serial Input.

Used to receive serial data through the

communication link.

SOUT4

UART 4 Serial Output.

Used to transmit serial data out to the

communication link.

18

PS_2E8_IRQD

I/O8t5V-d100

Power setting pin to define the IRQD index.

Default PS_2E8_IRQD = 0, IRQF index is programmed by

register.

If PS_2E8_IRQD = 1, setting IRQF index to 0x2E8.

19

DCD4#

INt5V

Data Carrier Detect.

An active low signal indicates the

modem or data set has detected a data carrier.

20

RI4#

INt5V

Ring Indicator.

An active low signal indicates that a ring

signal is being received from the modem or data set.

21

CTS3#

INt5V

Clear To Send is the modem control input.

22

DSR3#

INt5V

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.

RTS3#

UART 3 Request To Send.

An active low signal informs the

modem or data set that the controller is ready to send data.

23

PS_CONF_KE

Y0

I/O8t5V-d100

Power on configuration setting pin. As for detail description,

please refer to register description.

DTR3#

UART 3 Data Terminal Ready.

An active low signal informs

the modem or data set that controller is ready to communicate.

24

PS_WDT

I/O8t5V-d100

Power on setting pin to enable the watch dog timer.

Default PS_WDT=0, WDT time programmed by register.

When PS_WDT=1, WDT time is defined as 10 sec.

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