W83627THF データシートの表示（PDF） - Winbond

部品番号

コンポーネント説明

メーカー

W83627THF

LPC I/O

Winbond 

W83627THF/W83627THG

3.4 Serial Port Interface

SYMBOL PIN

CTSA#

49

CTSB#

78

DSRA#

50

DSRB#

79

RTSA#

HEFRAS

51

RTSB#

80

DTRA#

PNPCSV# 52

DTRB#

81

SINA

53

SINB

82

SOUTA

PENKBC

54

I/O

INt

INt

I/O12t

INt

INt

I/O8t

I/O8t

I/O8t

I/O8t

INt

INtt

I/O8t

FUNCTION

Clear To Send. It is the modem control input.

The function of these pins can be tested by reading bit 4 of the

handshake status register.

Clear To Send. It is the modem control input.

The function of these pins can be tested by reading bit 4 of the

handshake status register.

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.

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 A Request To Send. An active low signal informs the

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

During power-on reset, this pin is pulled down internally and is

defined as HEFRAS, which provides the power-on value for CR26

bit 6 (HEFRAS). A 4.7 kΩ is recommended if intends to pull up.

(select 4EH as configuration I/O port′s address)

UART B Request To Send. An active low signal informs the

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

UART A Data Terminal Ready. An active low signal informs the

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

During power-on reset, this pin is pulled down internally and is

defined as PNPCSV#, which provides the power-on value for

CR24 bit 0 (PNPCSV#). A 4.7 kΩ is recommended if intends to

pull up. (clear the default value of FDC, UARTs, PRT, Game port

and MIDI port)

UART B Data Terminal Ready. An active low signal informs the

modem or data set that controller is ready to communicate.

Serial Input. It is used to receive serial data through the

communication link.

Serial Input. It is used to receive serial data through the

communication link.

UART A Serial Output. It is used to transmit serial data out to the

communication link.

During power-on reset, this pin is pulled down internally and is

defined as PENKBC, which provides the power-on value for CR24

bit 2 (ENKBC). A 4.7 kΩ resistor is recommended if intends to pull

up. (enable KBC)

- 13 -

Publication Release Date: September 26, 2006

Revision 1.2

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