LPC47N227-MN View Datasheet(PDF) - SMSC -> Microchip
Part Name
Description
MFG CO.
'LPC47N227-MN' PDF : 202 Pages View PDF
TXD2 Pin (CR0A bits [7:6]=00):
1. This pin will remain low following a VCC POR until serial port 2 is enabled by setting the UART2
power down bit (CR02, bit 7), at which time the pin will reflect the state of the transmit output of
serial port 2 (if COM is enabled through CR0C Register for Serial Port 2).
2. This pin will remain low following a VCC POR until serial port 2 is enabled by setting the UART2
power down bit (CR02, bit 7), at which time the pin will reflect the state of the IR transmit output of
the IRCC block (if IR is enabled through the CR0C Register for Serial Port 2).
The IRTX2 and TXD2 pins will be driven low whenever serial port 2 is disabled (UART2 power down bit
is cleared).
Note that bits[7,6] of CR0A can be used to override this functionality of driving the IRTX2 and TXD2 pins
low when UART2 is powered down. If these bits are set to ‘11’, then the IRTX (TXD2) and IRTX2 pins
are high-z.
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