W83977ATF View Datasheet(PDF) - Winbond

Part Name

Description

MFG CO.

W83977ATF

WINBOND I/O

Winbond 

W83977ATF

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 the

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 the description of the parallel port for the 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.

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Publication Release Date: October 2001

Revision 0.53

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