NEC 78014Y Series User Manual page 332

Symbol <7>
CSIM0 CSIE0
R/W CSIM01 CSIM00 Serial Interface Channel 0 Clock Selection
0
1
1
R/W
CSIM CSIM CSIM PM25 P25 PM26 P26 PM27 P27
04 03
×
0
1 0
1 1
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R/W 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 in the
SBI mode, CMDD = 1 in the I
bus mode is used.
Notes 1. Bit 6 (COI) is a Read-Only bit.
2. When the I
3. Can be used as P25 (CMOS input) when used only for transmission.
4. Can be used freely as port function.
5. When the wake-up function is used (WUP = 1), set bit 5 of the interrupt timing specification register (SINT)
to 0.
Do not write data to serial I/O shift register 0 (SIO0) during WUP = 1.
×
Remark
PM××: Port mode register
P×× : Output latch of port
332
CHAPTER 16 SERIAL INTERFACE CHANNEL 0 ( µ PD78014Y Subseries)
Figure 16-6. Serial Operating Mode Register 0 Format (1/2)
<6> <5> 4 3
COI WUP CSIM04 CSIM03 CSIM02 CSIM01 CSIM00
×
Input clock to SCK0 pin from off-chip
0 8-bit timer register 2 (TM2) output
1 Clock specified with bits 0 to 3 of timer clock select register 3 (TCL3)
02
×
0 1 0 0 0
1
Note 4 Note 4
× ×
0 0 0 0
Note 4 Note 4
× ×
1 0 0 0
Note 4 Note 4
× ×
0 0 0 0
Note 4 Note 4
× ×
1 0 0 0
Note 5
2
C bus mode) matches the slave address register (SVA) data when SBI mode or I
2
C mode is used, the clock gets to 1/16 clock frequency which TO2 outputs.
: Don't care
2 1 0 Address
FF60H
Note 2
Operating Start Bit
Mode
1 3-wire MSB
serial I/O LSB
mode
SBI mode MSB
1
1
2-wire serial MSB
1 I/O mode or
2
I C Bus
Mode
1
When Reset R/W
00H R/W Note 1
SI0/SB0/SDA0/ SO0/SBI/SDA1/ SCK0/SCL/P27
P25 Pin Function P26 Pin Function Pin Function
Note 3
SI0 SO0
(Input) (CMOS
output)
P25 SB1
(CMOS (N-ch open-drain (CMOS
input/output) input/output)
SB0 P26
(N-ch open-drain (CMOS input/
input/output) output)
P25 SB1/SDA1
(CMOS (N-ch open-drain (N-ch open-
input/output) input/output)
SB0/SDA0 P26
(N-ch open-drain (CMOS
input/output) input/output)
SCK0
(CMOS
input/output)
SCK0
input/output)
SCK0/SCL
drain
input/ output)
2
C