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CHAPTER 8 APPLICATIONS OF SERIAL INTERFACE
Figure 8-8. Format of Serial Operating Mode Register 0 (
μ
PD78018FY subseries) (2/2)
R
COI
Slave address comparison result flag
Note
0
Data of slave address register does not coincide with data of serial I/O shift register
1
Data of slave address register coincides with data of serial I/O shift register
R/W
CSIE0
Controls operation of serial interface channel 0
0
Stops operation
1
Enables operation
Note
COI is 0 when CSIE0 = 0.
Caution Do not change the operating mode (3-wire serial I/O/2-wire serial I/O/I
2
C bus) while the operation
of the serial interface channel 0 is enabled. To change the operating mode, stop the serial
operation.