Samsung S3C8275X - Manual (Page 281)

SERIAL I/O INTERFACE S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
14-4
SERIAL I/O TIMING DIAGRAM (SIO)
SO
Transmit
Complete
SIO INT
Set SIOCON.3
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0 SI
SCK
Figure 14-4. Serial I/O Timing in Transmit/Receive Mode (Tx at falling, SIOCON.4 = 0)
SIO INT
DO7 DO6 DO5 DO4 DO3 DO2 DO1 DO0
DI7 DI6 DI5 DI4 DI3 DI2 DI1 DI0
SCK
Transmit
Complete
SI
SO
Set SIOCON.3
Figure 14-5. Serial I/O Timing in Transmit/Receive Mode (Tx at rising, SIOCON.4 = 1)