Service manual

Samsung Electronics 5-3
UART (Universal Asynchronous Receiver/Transmitter) at KS32C6200 enables the main and LIU to transmit
serial data. The block diagram of UART is as follows: (Fig.5-1-2) KS32C6200 has 2 UART channels. Channel
0(RXD0, TXD0) is used here and the baud rate is 9600bps.
5-1-2-3, LIU(Line Interface Unit) SERIAL COMMUNICATION PART
TxD
TxD
RxD
IRS
RE
IR Tx
Encoder
IR Rx
Decoder
0
0
1
1
RxD
UART
Block
Fig.5-1-2. UART BLOCK DIAGRAM
TXD :
START D0 D1 D2 D3 D4 D5 D6 D7 STOP
RXD :
START D0 D1 D2 D3 D4 D5 D6 D7 STOP
Fig.5-1-3 UART DATA FORMAT
START, STOP : 1BIT EACH
BAUD RATE : 9600bps
CPU I/F : SUPPORTS BOTH INTERRUPT & POLLING DRIVEN
PARITY : NO