Samsung S3C2500B User Manual page 579

SERIAL I/O (HIGH-SPEED UART)
TMODE
TX DATA
uart_tx_req
uart_tx_ack
RMODE
RX DATA
HU_RXBUF
uart_rx_req
uart_rx_ack
14-28
Select DMA Mode
Figure 14-20. DMA-Based Serial I/O Timing Diagram (Tx Only)
Select DMA Mode
Start Data Bits (5-8)
Previous Receive Data
Figure 14-21. DMA-Based Serial I/O Timing Diagram (Rx Only)
<TRANSMITTER>
Start Data Bits (5-8)
< RECEIVER >
Parity
Parity
Stop
Start
(1-2)
Valid Receive Data
S3C2500B
Stop
(1-2)
Data Bits