LPC47M192 datasheet(17/228 Pages) SMSC

17 / 228 page

SMSC DS – LPC47M192

Page 17

Rev. 03/30/05

DATASHEET

QFP PIN#

NAME

DESCRIPTION

BUFFER

NAME

PWR

WELL

NOTES

nERROR

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.

VCC

nALF

This output goes low to cause the printer to

automatically feed one line after each line is

printed. The nALF output is the complement

of bit 1 of the Printer Control Register. Refer

to Parallel Port description for use of this pin

in ECP and EPP mode.

Can be configured as an Open-Drain Output.

OP14

VCC

nSTROBE

An active low pulse on this output is used to

strobe the printer data into the printer. The

nSTROBE output is the complement of bit 0

of the Printer Control Register.

Refer to

Parallel Port description for use of this pin in

ECP and EPP mode.

Can be configured as an Open-Drain Output.

OP14

VCC

KEYBOARD/MOUSE INTERFACE (6)

KDAT

Keyboard Data I/O

IOD16

VCC

KCLK

Keyboard Clock I/O

IOD16

VCC

MDAT

Mouse Data I/O

IOD16

VCC

MCLK

Mouse Clock I/O

IOD16

VCC

GP36/

nKBDRST

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output.

Keyboard Reset Open-Drain Output

IO8

VCC

GP37/

A20M

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output.

Gate A20 Open-Drain Output

IO8

VCC

GAME PORT (8)

GP10/

J1B1

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output.

Joystick 1 Button 1 Input

IS/O8

VCC

GP11/

J1B2

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output

Joystick 1 Button 2 Input

IS/O8

VCC

GP12/

J2B1

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output

Joystick 2 Button 1 Input

IS/O8

VCC

GP13

J2B2

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output

Joystick 2 Button 2 Input

IS/O8

VCC

GP14/

J1X

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output

Joystick 1 X-Axis I/O

IO12

VCC

GP15/

J1Y

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output

Joystick 1 Y-Axis I/O

IO12

VCC

GP16/

J2X

General Purpose I/O.

GPIO can be

configured as an Open-Drain Output

Joystick 2 X-Axis I/O

IO12

VCC

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