FDC37C669 Ver la hoja de datos (PDF) - SMSC -> Microchip

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FDC37C669

PC 98/99 Compliant Super I/O Floppy Disk Controller with Infrared Support

SMSC -> Microchip 

QFP/

TQFP

PIN NO.

NAME

60 Paper End

59 Printer Selected

Status

75 nError

63-66 Port Data

68-71

DESCRIPTION OF PIN FUNCTIONS

SYMBOL

PE

SLCT

nERROR

PD0-PD7

BUFFER

TYPE

DESCRIPTION

I

Another status output from the printer, a high

indicating that the printer is out of paper. Bit 5

of the Printer Status Register reads the PE

input. Refer to Parallel Port description for

use of this pin in ECP and EPP mode.

I

This high active output from the printer

indicates that it has power on. Bit 4 of the

Printer Status Register reads the SLCT input.

Refer to Parallel Port description for use of this

pin in ECP and EPP mode.

I

A low on this input from the printer indicates

that there is a error condition at the printer. Bit

3 of the Printer Status register reads the

nERR input. Refer to Parallel Port description

for use of this pin in ECP and EPP mode.

I/O24

The bi-directional parallel data bus is used to

transfer information between CPU and

peripherals.

100 IOCHRDY

24 nIDE Enable

IOCHRDY

OD24P

In EPP mode, this pin is pulled low to extend

the read/write command. This pin has an

internal pull-up.

IDE/ALT IR PINS

nIDEEN

O24P This active low signal is active when the IDE is

(Note 1) enabled and the I/O address is accessing an

IDE register.

Interrupt Request IRQ_H

H

024 The interrupt request from a logical device or

IRQIN may be output on the IRQH signal.

Refer to the configuration registers for more

information.

OD24

If EPP or ECP Mode is enabled, this output is

pulsed low, then released to allow sharing of

interrupts.

12

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