W83877TF Datasheet, PDF(23/154 Page) Winbond – I/O chip disk drive adapter

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

W83877TF Datasheet, PDF (23/154 Pages) Winbond – I/O chip disk drive adapter

◁

W83877TF

1.3 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 the description of the

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

EXTENSION FDD MODE: DSKCHG2

Drive select B for Extension FDD B; the function of this pin is the

same as that of DSKCHG pin. This pin 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 that of the DSKCHG pin. This pin is pulled high

internally.

PRINTER MODE: PD5

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

parallel port for the 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 the description of the

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

EXTENSION FDD MODE: NC pin

EXTENSION. 2FDD MODE: MOA2

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

of the MOA pin.

PRINTER MODE: PD7

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

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

EXTENSION FDD MODE: NC pin

EXTENSION 2FDD MODE: DSA2

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

of the DSA pin.

- 13 -

Publication Release Date: March 1998

Version 0.61

▷