LPC47M172-NR View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

LPC47M172-NR

Advanced I/O Controller with Motherboard GLUE Logic

SMSC -> Microchip 

Advanced I/O Controller with Motherboard GLUE Logic

Datasheet

PIN#

45

47

48

50

51

1

2

3

4

5

7

64

66

67

68

69

NAME

(NOTE 1)

nERROR

nSLCTIN

nINITP

nALF

nSTROBE

MCLK

MDAT

KCLK

KDAT

GA20M

nKBDRST

nIDE_RSTDRV

nHD_LED

nPRIMARY_

HD

nSECONDARY

_HD

nSCSI

DESCRIPTION

BUFFER

NAME

(NOTE 2)

A low on this input from the printer

I

indicates that there is an 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 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.

OP14

Can be Configured as an Open-Drain

Output.

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.

OP14

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.

OP14

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.

OP14

Can be configured as an Open-Drain

Output.

KEYBOARD/MOUSE INTERFACE (6)

Mouse Clock I/O

IOD24

Mouse Data I/O

IOD24

Keyboard Clock I/O

IOD24

Keyboard Data I/O

IOD24

Gate A20 Open-Drain Output

OD8

Keyboard Reset Open-Drain Output

OD8

GLUE PINS (29)

IDE Reset Output

OD8

Hard Drive Front Panel LED Open-Drain OD12

Output

IDE Primary Drive Active Input

ISPU_400

IDE Secondary Drive Active Input

ISPU_400

SCSI Drive Active Input

ISPU_400

PWR

WELL

(NOTE 3)

VCC

NOTES

VCC

VCC

VCC

VCC

VCC

VCC

6

VCC

VCC

6

VCC

7

VCC

7

VCC

3

VCC

3

VCC

VCC

VCC

SMSC/Non-SMSC Register Sets (Rev. 02-27-04)

Page 20

DATASHEET

SMSC LPC47M172

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