NEC 78014Y Series User Manual page 312

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
R/W WUP
0
1
www.DataSheet4U.com
R COI
0
1
R/W CSIE0
0
1
Notes 1. Bit 6 (COI) is a Read-Only bit.
2. Can be used freely as port function.
3. When 2-wire serial I/O mode is used, be sure to set WUP to 0.
4. When CSIE0 = 0, COI becomes 0.
×
Remark
PMxx: Port mode register
Pxx : Output latch of port
312
CHAPTER 15 SERIAL INTERFACE CHANNEL 0 ( µ PD78014 Subseries)
<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
3-wire serial I/O mode (Refer to 15.4.2 3-wire serial I/O mode operation)
SBI mode (Refer to 15.4.3 SBI mode operation)
Note 2 Note 2
× ×
0 0 0 0
Note 2 Note 2
× ×
1 0 0 0
Wake-up Function Control Note 3
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 whenthe SBI mode is used
Slave Address Comparison Result Flag
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
Serial Interface Channel 0 Operation Control
Operation stopped
Operation enable
: don't care
2 1 0 Address
FF60H
Operating Start Bit
Mode
2-wire serial MSB
1 I/O mode
1
Note 4
When Reset R/W
00H R/W Note 1
SI0/SB0/P25 SO0/SB1/P26
Pin Function Pin Function
P25 SB1
(CMOS (N-ch open-drain (N-ch open-
input/output) input/output)
SB0 P26
(N-ch open-drain (CMOS
input/output) input/output)
SCK0/P27
Pin Function
SCK0
drain
input/output)