W83877ATF Datasheet, PDF(15/191 Page) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

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W83877ATF Datasheet, PDF (15/191 Pages) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

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W83877ATF

1.3 Multi-Mode Parallel Port, continued

SYMBOL PIN

I/O

SLIN

OD12

INIT

OD12

AFD

OD12

FUNCTION

PRINTER MODE: SLIN

Output line for detection of printer selection. 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.

EXTENSION FDD MODE: STEP2

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

of the STEP pin.

EXTENSION 2FDD MODE: STEP2

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

as that of the STEP pin .

PRINTER MODE: INIT

Output line for the printer initialization. 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.

EXTENSION FDD MODE: DIR2

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

of the DIR pin.

EXTENSION 2FDD MODE: DIR2

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

as that of the DIR pin.

PRINTER MODE: AFD

An active low output from this pin causes the printer to auto feed

a line after a line is printed. 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.

EXTENSION FDD MODE: RWC2

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

of the RWC pin.

EXTENSION 2FDD MODE: RWC2

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

as that of the RWC pin.

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Publication Release Date: April 1998

Version 0.51

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