M38002M4 Datasheet, PDF (81/173 Pages) Mitsubishi Electric Semiconductor – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.3 Serial I/O
Receiving side
Serial I/O status register (Address : 1916)
b7
b0
SIOSTS
Receive buffer full flag
Check a completion of receiving 1-byte data with this flag.
“1” : At completing to receive
“0” : At reading out a receive buffer
Serial I/O control register (Address : 1A16)
b7
b0
SIOCON _{1 1 1 1 1 1}
Serial I/O synchronous clock selection bit : External clock
SRDY output enable bit : Use the SRDY output
Transmit enable bit : Transmit enabled
Set this bit to “1,” using SRDY output.
Receive enable bit : Receive enabled
Serial I/O mode selection bit : Clock synchronous serial I/O
Serial I/O enable bit : Serial I/O enabled
Fig. 2.3.16 Setting of related registers at a receiving side [Communication using a clock
synchronous serial I/O]
3800 GROUP USER’S MANUAL
2-33