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Symbol
CSIM0 CSIE0
R/W
CSIM01 CSIM00 Serial Interface Channel 0 Clock Selection
R/W
CSIM CSIM CSIM PM25 P25 PM26 P26 PM27 P27
R/W
R/W
CSIE0
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Notes
Remark
CHAPTER 15 SERIAL INTERFACE CHANNEL 0 ( µ PD78014 Subseries)
<7>
<6>
<5>
4
COI
WUP CSIM04 CSIM03 CSIM02 CSIM01 CSIM00
×
0
Input clock to SCK0 pin from off-chip
1
0
8-bit timer register 2 (TM2) output
1
1
Clock specified with bits 0 to 3 of timer clock select register 3 (TCL3)
04
03
02
×
×
0
0
1
0
0
1
1
0
SBI mode (Refer to 15.4.3 SBI mode operation)
1
0
2-wire serial I/O mode (Refer to 15.4.4 2-wire serial I/O mode operation)
WUP
Wake-up Function Control
0
Interrupt request signal generation with each serial transfer in any mode
1
Interrupt request signal generation when the address received after bus release (when CMDD = RELD = 1)
matches the slave address register (SVA) in SBI mode
Serial Interface Channel 0 Operation Control
0
Operation stopped
1
Operation enable
1. Bit 6 (COI) is a Read-Only bit.
2. Can be used as P25 (CMOS input) when used only for transmission.
3. Be sure to set WUP to 0 when the 3-wire serial I/O mode is selected.
×
: don't care
PMxx: Port mode register
Pxx : Output latch of port
3
2
1
0
Operating
Start
Mode
Bit
0
1
3-wire
MSB
serial I/O
LSB
mode
Note 3
Address
When Reset
R/W
FF60H
00H
R/W
Note 1
SI0/SB0/P25
SO0/SBI/P26
Pin Function
Pin Function
Note 2
SI0
SO0
(Input)
(CMOS
output)
SCK0/P27
Pin Function
SCK0
(CMOS
input/output)
279
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