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PRELIMINARY
UART
S3C6400 RISC MICROPROCESSOR
31-8
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
In IR transmit mode, the transmit pulse comes out at a rate of 3/16, the normal serial transmit rate (when the
transmit data bit is zero); In IR receive mode, the receiver must detect the 3/16 pulsed period to recognize a zero
value (see the frame timing diagrams shown in Figure 31-6 and Figure 31-7).
IrDA Tx
Encoder
0
1
0
1
IrDA Rx
Decoder
TxD
RxD
TxD
IRS
RxD
RE
UART
Block
Figure 31-4 IrDA Function Block Diagram
Start
Bit
Stop
Bit
Data Bits
SIO Frame
0
1
0
1
0
0
1
1
0
1
Figure 31-5 Serial I/O Frame Timing Diagram (Normal UART)