LPC47N237-MD View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

LPC47N237-MD

3.3v I/O Controller for Port Replicators and Docking Stations

SMSC -> Microchip 

3.3v I/O Controller for Port Replicators and Docking Stations

PIN#

77

78

79

80

81

82

83

44-46

NAME

(NOTE 4.1)

SLCT

PE

BUSY

nACK

nERROR

nALF

nSTROBE

LGP44-

LGP46

DESCRIPTION

BUFFER

NAME

(NOTE 4.2)

This high active input 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.

Another status input 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.

This is a status input from the printer, a high

indicating that the printer is not ready to

receive new data. Bit 7 of the Printer Status

Register is the complement of the BUSY

input. Refer to Parallel Port description for

use of this pin in ECP and EPP mode.

A low active input from the printer indicating

that it has received the data and is ready to

accept new data. Bit 6 of the Printer Status

Register reads the nACK input. Refer to

Parallel Port description for use of this pin in

ECP and EPP mode.

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.

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.

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.

LPC GENERAL PURPOSE I/O (4)

General Purpose I/O. These pins default as

inputs.

I

I

I

I

I

OP14

OP14

IO8

PWR

WELL

(NOTE

4.3)

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

NOTES

Revision 0.3 (10-26-04)

Page 16

DATASHEET

SMSC DS – LPC47N237

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