W83877F Ver la hoja de datos (PDF) - Winbond

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W83877F

WINBOND I/O

Winbond 

W83877F

1.4 Multi-Mode Parallel Port, continued

SYMBOL PIN

I/O

ERR

29

INt

SLIN

OD12

OUT12t

OD12

_

22

OD12

OD12

OUT12t

OD12

OUT12t

FUNCTION

PRINTER MODE: ERR

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

encountered an error condition. 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: HEAD2

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

of the HEADpin.

EXTENSION ADAPTER MODE: XA2

This pin is system address A2 for the Extension Adapter.

EXTENSION 2FDD MODE: HEAD2

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

as that of the HEAD pin.

JOYSTICK MODE: NC pin.

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 ADAPTER MODE: XTC

This pin is the DMA terminal count for the Extension Adapter.

The count is sent by TC directly.

EXTENSION 2FDD MODE: STEP2

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

as that of the STEP pin .

JOYSTICK MODE: VDD for joystick.

- 11 -

Publication Release Date: January 1996

Revision A2

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