LPC47M142-NC Standard Microsystems (SMSC), LPC47M142-NC Datasheet - Page 13

• Manufacturer Part Number: LPC47M142-NC
• Manufacturer: Standard Microsystems (SMSC)

Specifications of LPC47M142-NC

• Lead Free Status / RoHS Status: Not Compliant

Note:
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
SMSC DS – LPC47M14X
PIN #
QFP
32
33
34
35
36
37
38
39
41
42
43
45
46
47
50
48
49
17
28
The "n" as the first letter of a signal name or the “#” as the suffix of a signal name indicates an "Active Low"
signal.
Buffer types per function on multiplexed pins are separated by a slash “/”. Buffer types in parenthesis
represent multiple buffer types for a single pin function.
The LPCPD# pin may be tied high. The LPC interface will function properly if the PCI_RESET# signal
follows the protocol defined for the LRESET# signal in the “Low Pin Count Interface Specification”.
For USB Hub functionality, the 32 KHz input clock must always be connected. There is a bit in the
configuration register at 0xF0 in Logical Device A that indicates whether or not the 32KHz clock is
connected. This bit determines the clock source for the fan tachometer, LED and “wake on specific key”
logic. This bit must always be set to ‘0’ (‘0’=32 KHz clock connected; reset default=‘0’).
The fan control pins (FAN1 and FAN2) come up as outputs and low following a VCC POR and Hard Reset.
These pins revert to their non-inverting GPIO input function when VCC is removed from the part.
The IRTX pins (IRTX2/GP35 and GP53/TXD2 (IRTX)) are driven low when the part is powered by VTR
(VCC=0V with VTR=3.3V). These pins will remain low following a power-up (VCC POR) until serial port 2
is enabled by setting the activate bit, at which time the pin will reflect the state of the transmit output of the
Serial Port 2 block.
The VCC power-up default for this pin is Logic “0” if the IRTX function is programmed on the GPIO.
VTR must not be connected to VCC. The 32 KHz input clock must not be driven high whenVTR = 0v.
General
/Joystick 1 Button 1
General
/Joystick 1 Button 2
General
/Joystick 2 Button 1
General
/Joystick 2 Button 2
General
/Joystick 1 X-Axis
General
/Joystick 1 Y-Axis
General
/Joystick 2 X-Axis
General
/Joystick 2 Y-Axis
General Purpose I/O / P17
General Purpose I/O / P16
/nDS1
General Purpose I/O / P12
/nMTR1
General Purpose I/O /
System Option
General
/MIDI_IN
General
/MIDI_OUT
General Purpose I/O
/SMI Output
General Purpose I/O /
LED
General Purpose I/O /
LED
General Purpose I/O /
Power Management Event
General Purpose I/O
/Device
Control
NAME
Disable
Purpose
Purpose
Purpose
Purpose
Purpose
Purpose
Purpose
Purpose
Purpose
Purpose
Reg.
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
TOTAL
GENERAL PURPOSE I/O (19)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
GP10 /J1B1
GP11 /J1B2
GP12 /J2B1
GP13 /J2B2
GP14 /J1X
GP15 /J1Y
GP16 /J2X
GP17 /J2Y
GP20 /P17
GP21
nDS1
GP22
nMTR1
GP24
/SYSOPT
GP25
/MIDI_IN
GP26
/MIDI_OUT
GP27
/nIO_SMI
GP60 /LED1
GP61 /LED2
GP42
/nIO_PME
GP43/DDRC
SYMBOL
Page 13
/P16/
/P12/
IS/O8
IS/O8
IS/O8
IS/O8
IO12
IO12
IO12
IO12
IO8
IO12
IO12
IO8
IO8
IO12
IO12
IO12
IO12
IO12
IO8
BUFFER
TYPE
(IS/O8/OD8)/IS
(IS/O8/OD8)/IS
(IS/O8/OD8)/IS
(IS/O8/OD8)/IS
(I/O12/OD12)/ IO12
(I/O12/OD12)/ IO12
(I/O12/OD12)/ IO12
(I/O12/OD12)/ IO12
(I/O8/OD8)/IO8
(I/O12/OD12)/
IO12/(O12/OD12)
(I/O12/OD12)/
IO12/(O12/OD12)
(I/O8/OD8)
(I/O8/OD8)/I
(I/O12/OD12)/O12
(I/O12/OD12)/ OD12
(I/O12/OD12)/O12
(I/O12/OD12)/O12
(I/O12/OD12)/ OD12
(I/O8/OD8)/I
PER FUNCTION
BUFFER TYPE
(NOTE 1)
Rev. 03/19/2001
NOTES
10
10
8