NEC uPD78056Y User Manual
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CHAPTER 16 SERIAL INTERFACE CHANNEL 0 (
µ
PD78054 Subseries)
Figure 16-4. Serial Operating Mode Register 0 Format (2/2)
Notes 1. To use the wake-up function (WUP = 1), clear the bit 5 (SIC) of the interrupt timing specify register
(SINT) to 0.
2. When CSIE0 = 0, COI becomes 0.
3. In the SBI mode, clear WUP to 0 before stopping (CSIE
←
0) the operation of serial interface channel
0, otherwise, P25 is fixed to high level and may not be able to be used as a normal port.
WUP
0
1
Wake-up Function Control
Note 1
Interrupt request signal generation with each serial transfer in any mode
Interrupt request signal generation when the address received after bus release (when CMDD = RELD = 1)
matches the slave address register (SVA) data in SBI mode
R/W
COI
0
1
Slave Address Comparison Result Flag
Note 2
Slave address register (SVA) not equal to serial I/O shift register 0 (SIO0) data
Slave address register (SVA) equal to serial I/O shift register 0 (SIO0) data
R
CSIE0
0
1
Serial Interface Channel 0 Operation Control
Note 3
Operation stopped
Operation enable
R/W