W83977CTF Ver la hoja de datos (PDF) - Winbond

Número de pieza

componentes Descripción

Lista de partido

W83977CTF

WINBOND I/O

Winbond 

W83977EF/ CTF

PRELIMINARY

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; its 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: March 1999

-11 -

Revision A1

Share Link: