W83977TF-A View Datasheet(PDF) - Winbond

Part Name

Description

Manufacturer

W83977TF-A

WINBOND I/O

Winbond 

1.3 Serial Port Interface, continued

SYMBOL PIN

I/O

RIA

65

INt

RIB

66

W83977TF

PRELIMINARY

FUNCTION

Ring Indicator. An active low signal indicates that a ring signal is

being received from the modem or data set.

1.4 Infrared Interface

SYMBOL

IRRX

IRTX

PIN

I/O

FUNCTION

37

INcs Infrared Receiver input.

38 OUT12t Infrared Transmitter Output.

1.5 Multi-Mode Parallel Port

The following pins have alternate functions, which are controlled by CR28 and L3-CRF0.

SYMBOL PIN

I/O

FUNCTION

SLCT

18

INt PRINTER MODE: SLCT

An active high input on this pin indicates that the printer is selected.

This pin is pulled high internally. Refer to description of the

parallel port for definition of this pin in ECP and EPP mode.

OD12 EXTENSION FDD MODE: WE2

This pin is for Extension FDD B; its function is the same as the WE

pin of FDC.

OD12 EXTENSION 2FDD MODE: WE2

This pin is for Extension FDD A and B; it function is the same as

the WE pin of FDC.

PE

19

INt PRINTER MODE: PE

An active high input on this pin indicates that the printer has

detected the end of the paper. This pin is pulled high internally.

Refer to description of the parallel port for definition of this pin in

ECP and EPP mode.

OD12 EXTENSION FDD MODE: WD2

This pin is for Extension FDD B; its function is the same as the

WD pin of FDC.

OD12

EXTENSION 2FDD MODE: WD2

This pin is for Extension FDD A and B; its function is the same as

the WD pin of FDC.

Publication Release Date: April 1998

-9 -

Revision 0.62

Share Link: