FDC87W21 Ver la hoja de datos (PDF) - SMSC -> Microchip

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FDC87W21

Power I/O Controller with Fast Infrared Support

SMSC -> Microchip 

SYMBOL PIN

I/O

FUNCTION

PD3

12

I/O24t PRINTER MODE: PD3

Parallel port data bus bit 3. Refer to the description of the parallel

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

INt EXTENSION FDD MODE: nRDATA2

Motor on B for Extension FDD B; the function of this pin is the

same as that of the nRDATA pin. This pin is pulled high internally.

I/O24t EXTENSION ADAPTER MODE: XD3

This pin is system data bus D3 for the Extension Adapter.

INt EXTENSION 2FDD MODE: nRDATA2

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

same as that of the nRDATA pin. This pin is pulled high internally.

-

JOYSTICK MODE: NC pin

PD4

13

I/O24t 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.

INt EXTENSION FDD MODE: nDSKCHG2

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

same as that of nDSKCHG pin. This pin is pulled high internally.

I/O24t EXTENSION ADAPTER MODE: XD4

This pin is system data bus D4 for the Extension Adapter.

INt EXTENSION 2FDD MODE: nDSKCHG2

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

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

internally.

INt JOYSTICK MODE: JB0

This pin is the button 0 input for the joystick.

PD5

14

I/O24t 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.

I/O24t EXTENSION ADAPTER MODE: XD5

This pin is system data bus D5 for the Extension Adapter.

-

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

INt JOYSTICK MODE: JB1

This pin is the button 1 input for the joystick.

PD6

16

I/O24t 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: This pin is a tri-state output.

I/O24t EXTENSION ADAPTER MODE: XD6

This pin is system data bus D6 for the Extension Adapter.

OD24 EXTENSION. 2FDD MODE: nMOA2

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

the nMOA pin.

-

JOYSTICK MODE: NC pin

14

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