LPC47M192 View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
'LPC47M192' PDF : 228 Pages View PDF
QFP PIN#
91
NAME
nDCD1
90
nRI1
61
IRRX2/
GP34
62
IRTX2/
GP35
95
GP52/
RXD2
(IRRX)
96
GP53/
TXD2
(IRTX)
98
GP55/
nRTS2
99
GP56/
nCTS2
100
GP57/
nDTR2
SMSC DS – LPC47M192
DESCRIPTION
Active low Data Carrier Detect inputs for the
serial port. Handshake signal which notifies
the UART that carrier signal is detected by
the modem. The CPU can monitor the
status of nDCD signal by reading bit 7 of
Modem Status Register (MSR). A nDCD
signal state change from low to high after the
last MSR read will set MSR bit 3 to a 1. If bit
3 of Interrupt Enable Register is set, the
interrupt is generated when nDCD changes
state.
Note: Bit 7 of MSR is the complement of
nDCD.
Active low Ring Indicator inputs for the serial
port. Handshake signal which notifies the
UART that the telephone ring signal is
detected by the modem. The CPU can
monitor the status of nRI signal by reading
bit 6 of Modem Status Register (MSR). A
nRI signal state change from low to high
after the last MSR read will set MSR bit 2 to
a 1. If bit 3 of Interrupt Enable Register is
set, the interrupt is generated when nRI
changes state.
Note: Bit 6 of MSR is the complement of
nRI.
INFRARED INTERFACE (2)
Infrared Receive Input
/General Purpose I/O. GPIO can be
configured as an Open-Drain Output.
Infrared Transmit Output
/General Purpose I/O. GPIO can be
configured as an Open-Drain Output.
SERIAL PORT 2 INTERFACE (8)
General Purpose I/O. GPIO can be
configured as an Open-Drain Output.
Receive Serial Data 2 Input. See RXD1 pin
description above
Infrared Receive Input
BUFFER
NAME
I
I
IS/O8
IO12
IS/O8
General Purpose I/O. GPIO can be
configured as an Open-Drain Output.
Transmit Serial Data 2 Output. See TXD1
pin description above.
Infrared Transmit Output
IO12
General Purpose I/O. GPIO can be IO8
configured as an Open-Drain Output.
Request to Send 2 Output. See nRTS1 pin
description above.
General Purpose I/O. GPIO can be IO8
configured as an Open-Drain Output.
Clear to Send 2 Input. See nCTS1 pin
description above.
General Purpose I/O. GPIO can be IO8
configured as an Open-Drain Output.
Data Terminal Ready Output. See nDTR1
pin description above.
Page 15
DATASHEET
PWR
WELL
VCC
VCC
VCC
VTR
VCC
VTR
VCC
VCC
VCC
NOTES
5
7, 8, 9
5
5, 7, 8
5
5
5
Rev. 03/30/05
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