Samsung SF-4500 Service Manual page 34

6-1-2-3, LIU(Line Interface Unit) Serial
Communication Part
UART (Universal Asynchronous
Receiver/Transmitter) at KS32C6200 enables the
main and LIU, main and OPE to transmit serial
UART
Block
TXD :
RXD :
Samsung Electronics
TxD
IRS
RxD
IR Tx
RE
Encoder
Fig.6-1-2. UART BLOCK DIAGRAM
START D0 D1
START D0 D1
Fig.6-1-3 UART DATA FORMAT
data. The block diagram of UART is as follows:
(Fig.6-1-2) KS32C6200 has 2 UART channels. The
baud rate is 9600bps.
0
1
0
1
Decoder
D2 D3 D4 D5 D6
D2 D3 D4 D5 D6
IR Rx
D7 STOP
D7 STOP
TxD
RxD
6-3