W83977EG-AW Datasheet, PDF(18/142 Page) Nuvotem Talema – These products are not designed for use in life support appliances

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W83977EG-AW Datasheet, PDF (18/142 Pages) Nuvotem Talema – These products are not designed for use in life support appliances

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W83977EF-AW/W83977EG-AW

Multi-Mode Parallel Port, continued

SYMBOL PIN

I/O

PD4

I/O24t

INt

PD5

PD6

PD7

I/O24t

OD24

I/O24t

OD24

FUNCTION

PRINTER MODE: PD4

Parallel port data bus bit 4. Refer to description of the parallel

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

EXTENSION FDD MODE: DSKCHG2#

This pin is for Extension FDD B; the function of this pin is the

same as the DSKCHG# pin of FDC. It is pulled high internally.

EXTENSION 2FDD MODE: DSKCHG2#

This pin is for Extension FDD A and B; this function of this pin is

the same as the DSKCHG# pin of FDC. It is pulled high

internally.

PRINTER MODE: PD5

Parallel port data bus bit 5. Refer to description of the parallel

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

EXTENSION FDD MODE: This pin is a tri-state output.

EXTENSION 2FDD MODE: This pin is a tri-state output.

PRINTER MODE: PD6

Parallel port data bus bit 6. Refer to description of the parallel

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

EXTENSION FDD MODE: This pin is a tri-state output.

EXTENSION. 2FDD MODE: MOA2#

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

MOA# pin of FDC.

PRINTER MODE: PD7

Parallel port data bus bit 7. Refer to description of the parallel

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

EXTENSION FDD MODE: This pin is a tri-state output.

EXTENSION 2FDD MODE: DSA2#

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

DSA# pin of FDC.

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