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LPC47N227-MN

100 Pin Super I/O with LPC Interface for Notebook Applications

SMSC -> Microchip 

TQFP/STQFP

PIN #

NAME

66

Initiate Output/

SYMBOL

nINIT/

FDC Direction nDIR

Control

(Note 4)

67

Printer Select nSLCTIN/

Input/

FDC Step Pulse nSTEP

(Note 4)

68

Port Data 0/

PD0/

FDC Index

nINDEX

69

Port Data 1/

PD1/

FDC Track 0 nTRK0

70

Port Data 2/

PD2/

FDC Write

nWRTPRT

Protected

71

Port Data 3/

PD3/

FDC Read Disk

Data

nRDATA

72

Port Data 4/

PD4/

FDC Disk

nDSKCHG

Change

73

Port Data 5

PD5

74

Port Data 6/

PD6/

FDC Motor

nMTR0

On 0

75

Port Data 7

PD7

77

Printer Selected SLCT/

Status/

FDC Write Gate nWGATE

BUFFER

TYPE PER

FUNCTION1

(OD14/OP14)/

OD14

DESCRIPTION

This output is bit 2 of the printer control register.

This is used to initiate the printer when low.

Refer to Parallel Port description for use of this

pin in ECP and EPP mode.

See FDC Pin definition.

(OD14/OP14)/

OD14

This active low output selects the printer. This is

the complement of bit 3 of the Printer Control

Register.

Refer to Parallel Port description for use of this pin

in ECP and EPP mode.

IOP14/

See FDC Pin definition.

Port Data 0

IS

IOP14/

See FDC Pin definition.

Port Data 1

IS

IOP14/

See FDC Pin definition.

Port Data 2

IS

See FDC Pin definition.

IOP14/

Port Data 3

IS

IOP14/

See FDC Pin definition.

Port Data 4

IS

See FDC Pin definition.

IOP14

IOP14/

Port Data 5

Port Data 6

OD14

See FDC Pin definition.

IOP14

I/

OD12

Port Data 7

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.

See FDC Pin definition.

9

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