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Table 14-8. UART 1 Miscellaneous Register Description (Continued)
Name
RTS1
RTS1 Control—This bit selects the function of the RTS1 pin.
CONT
Bit 7
RTS1
Request to Send Pin—This bit controls the RTS1 pin when
Bit 6
the RTS1 CONT bit is 0.
IRDAEN
Infrared Enable—This bit enables the IrDA interface.
Bit 5
IRDA
Loop Infrared—This bit controls the loopback from the trans-
LOOP
mitter to the receiver in the IrDA interface. This bit is used for
Bit 4
system testing purposes.
RXPOL
Receive Polarity—This bit controls the polarity of the received
Bit 3
data.
TXPOL
Transmit Polarity—This bit controls the polarity of the trans-
Bit 2
mitted data.
Reserved
Reserved
Bits 1–0
Universal Asynchronous Receiver/Transmitter 1 and 2
Description
Programming Model
Setting
0 = RTS1 pin is controlled by the
RTS1 bit.
1 = RTS1 pin is controlled by the
receiver FIFO. When no more
than four slots are available,
RTS1 is negated.
0 = RTS1 pin is 1.
1 = RTS1 pin is 0.
0 = Normal NRZ operation.
1 = IrDA operation.
0 = No infrared loop.
1 = Connect the infrared transmitter
to an infrared receiver.
0 = Normal polarity (1 = idle).
1 = Inverted polarity (0 = idle).
0 = Normal polarity (1 = idle).
1 = Inverted polarity (0 = idle).
These bits are reserved and should
be set to 0.
14-17
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