FDC87W22 Ver la hoja de datos (PDF) - SMSC -> Microchip

Número de pieza

componentes Descripción

Lista de partido

FDC87W22

Power I/O Controller

SMSC -> Microchip 

SYMBOL

nSTB

PD0

PIN

I/O

FUNCTION

19

OD12 PRINTER MODE: nSTB

An active low output is used to latch the parallel data into the

printer. This pin is pulled high internally. Refer to the

description of the parallel port for the definition of this pin in

-

OUT12t

ECP and EPP mode.

EXTENSION FDD MODE:

This pin is a tri-state output.

EXTENSION ADAPTER MODE: nXWR

This pin is the I/O write command for the Extension Adapter.

-

OUT12t

When the Extension Adapter base address is written to the

Extension Adapter address register, nXRD and nXWR go low

simultaneously so that the command register on the

Extension Adapter can latch the same base address.

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

JOYSTICK MODE: VDD for joystick.

9

I/O24t PRINTER MODE: PD0

Parallel port data bus bit 0. Refer to the description of the

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

INt

mode.

EXTENSION FDD MODE: nINDEX2

I/O24t

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

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

internally.

EXTENSION ADAPTER MODE: XD0

INt

This pin is system data bus D0 for the Extension Adapter.

EXTENSION 2FDD MODE: nINDEX2

I/O24t

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

is the same as nINDEX pin. This pin is pulled high internally.

JOYSTICK MODE: JP0

This pin is the paddle 0 input for joystick.

14

Share Link: