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LPC47M192-NW

LPC Super I/O with Hardware Monitoring Block

SMSC -> Microchip 

QFP PIN#

97

NAME

GP54/

nDSR2

94

GP51/

nDCD2

92

GP50/

nRI2

66

nINIT

67

nSLCTIN

68

PD0

69

PD1

70

PD2

71

PD3

72

PD4

73

PD5

74

PD6

75

PD7

77

SLCT

78

PE

79

BUSY

80

nACK

SMSC DS – LPC47M192

DESCRIPTION

General Purpose I/O. GPIO can be

configured as an Open-Drain Output.

Data Set Ready 2 Input. See nDSR1 pin

description above.

General Purpose I/O. GPIO can be

configured as an Open-Drain Output.

Data Carrier Detect 2 Input. See nDCD1 pin

description above.

General Purpose I/O. GPIO can be

configured as an Open-Drain Output.

Ring Indicator 2 Input. See nRI1 pin

description above.

PARALLEL PORT INTERFACE (17)

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.

Can be configured as an Open-Drain Output.

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.

Can be Configured as an Open-Drain

Output.

Port Data 0 I/O

Port Data 1 I/O

Port Data 2 I/O

Port Data 3 I/O

Port Data 4 I/O

Port Data 5 I/O

Port Data 6 I/O

Port Data 7 I/O

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.

BUFFER

NAME

IO8

IO8

IO8

OP14

OP14

IOP14

IOP14

IOP14

IOP14

IOP14

IOP14

IOP14

IOP14

I

I

I

I

PWR

WELL

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

VCC

NOTES

5

5

5

Page 16

DATASHEET

Rev. 03/30/05

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