SMSC DS – LPC47M192
Page 17
Rev. 03/30/05
DATASHEET
QFP PIN#
NAME
DESCRIPTION
BUFFER
NAME
I
PWR
WELL
VCC
NOTES
81
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.
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.
KEYBOARD/MOUSE INTERFACE (6)
Keyboard Data I/O
Keyboard Clock I/O
Mouse Data I/O
Mouse Clock I/O
General Purpose I/O. GPIO can be
configured as an Open-Drain Output.
Keyboard Reset Open-Drain Output
82
nALF
OP14
VCC
83
nSTROBE
OP14
VCC
56
57
58
59
63
KDAT
KCLK
MDAT
MCLK
GP36/
nKBDRST
GP37/
A20M
IOD16
IOD16
IOD16
IOD16
IO8
VCC
VCC
VCC
VCC
VCC
5
5
10
64
General Purpose I/O. GPIO can be
configured as an Open-Drain Output.
Gate A20 Open-Drain Output
IO8
VCC
10
GAME PORT (8)
32
GP10/
J1B1
GP11/
J1B2
GP12/
J2B1
GP13
J2B2
GP14/
J1X
GP15/
J1Y
GP16/
J2X
General Purpose I/O. GPIO can be
configured as an Open-Drain Output.
Joystick 1 Button 1 Input
IS/O8
VCC
5
33
General Purpose I/O. GPIO can be
configured as an Open-Drain Output
Joystick 1 Button 2 Input
IS/O8
VCC
5
34
General Purpose I/O. GPIO can be
configured as an Open-Drain Output
Joystick 2 Button 1 Input
IS/O8
VCC
5
35
General Purpose I/O. GPIO can be
configured as an Open-Drain Output
Joystick 2 Button 2 Input
IS/O8
VCC
5
36
General Purpose I/O. GPIO can be
configured as an Open-Drain Output
Joystick 1 X-Axis I/O
IO12
VCC
5
37
General Purpose I/O. GPIO can be
configured as an Open-Drain Output
Joystick 1 Y-Axis I/O
IO12
VCC
5
38
General Purpose I/O. GPIO can be
configured as an Open-Drain Output
Joystick 2 X-Axis I/O
IO12
VCC
5