Samsung S3C2440A - Manual (Page 456)

IIC-BUS INTERFACE S3C2440A RISC MICROPROCESSOR
20-8
Write slave address to
IICDS.
Write 0xB0 (M/R Start)
to IICSTAT.
The data of the IICDS (slave
address) is transmitted.
ACK period and then
interrupt is pending.
Write 0x90 (M/R Stop)
to IICSTAT.
Read a new data from
IICDS.
Stop?
Clear pending bit to
resume.
SDA is shifted to IICDS.
START
Master Rx mode has
been configured.
Clear pending bit .
Wait until the stop
condition takes effect.
END
Y
N
Figure 20-7 Operations for Master/Receiver Mode