CHAPTER 13 SERIAL INTERFACE CHANNEL 0
219
User’s Manual U11302EJ4V0UM
PM25 P25 PM26 P26 PM27 P27
R/W
CSIM CSIM
Serial interface channel 0 clock selection
01
00
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)
R/W
CSIM CSIM CSIM
Operating
Start
SI0/P25
SO0/P26
SCK0/P27
04
03
02
mode
bit
pin function
pin function
pin function
0
MSB
0
×
1
×
0
0
0
1
1
LSB
1
0
SBI mode (refer to
13.4.3 SBI mode operation
)
1
1
2-wire serial I/O mode (refer to
13.4.4 2-wire serial I/O mode operation
)
R/W
WUP
Wakeup function control
Note 3
0
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
1
slave address register (SVA) in SBI mode
R
COI
Slave address comparison result flag
Note 4
0
Slave address register (SVA) not equal to serial I/O shift register 0 (SIO0) data
1
Slave address register (SVA) equal to serial I/O shift register 0 (SIO0) data
R/W CSIE0
Serial interface channel 0 operation control
0
Operation stopped
1
Operation enabled
Notes 1.
Bit 6 (COI) is a read-only bit.
2.
Can be used as P25 (CMOS input) when used only for transmission.
3.
Set WUP to 0 when the 3-wire serial I/O mode is selected.
4.
When CSIE0 = 0, COI becomes 0.
Remark
×
:
don’t care
PM
××
: Port mode register
P
××
:
Port output latch
3-wire serial
SI0
Note 2
SO0
SCK0
I/O mode
(input)
(CMOS output)
(CMOS I/O)
CSIE0
COI WUP
CSIM
04
CSIM
03
CSIM
02
CSIM
01
CSIM
00
<7> <6> <5>
4
3
2
1
0
CSIM0
Symbol
FF60H 00H R/W
Note 1
Address After reset R/W
Содержание mPD780208 Subseries
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