199
CHAPTER 8 APPLICATIONS OF SERIAL INTERFACE
Figure 8-2. Format of Timer Clock Select Register 3
(
μ
PD78054Y, 78078Y, 780058Y, 78058FY, 78075BY subseries,
μ
PD78070AY)
TCL33
TCL32 TCL31
TCL30
Selects serial clock of serial interface channel 0
MCS = 1
MCS = 0
MCS = 1
MCS = 0
0
1
1
0
f
XX
/2
5
Setting prohibited f
X
/2
6
(78.1 kHz)
f
XX
/2
Setting prohibited f
X
/2
2
(1.25 MHz)
0
1
1
1
f
XX
/2
6
f
X
/2
6
(78.1 kHz)
f
X
/2
7
(39.1 kHz)
f
XX
/2
2
f
X
/2
2
(1.25 MHz)
f
X
/2
3
(625 kHz)
1
0
0
0
f
XX
/2
7
f
X
/2
7
(39.1 kHz)
f
X
/2
8
(19.5 kHz)
f
XX
/2
3
f
X
/2
3
(625 kHz)
f
X
/2
4
(313 kHz)
1
0
0
1
f
XX
/2
8
f
X
/2
8
(19.5 kHz)
f
X
/2
9
(9.77 kHz)
f
XX
/2
4
f
X
/2
4
(313 kHz)
f
X
/2
5
(156 kHz)
1
0
1
0
f
XX
/2
9
f
X
/2
9
(9.77 kHz)
f
X
/2
10
(4.88 kHz) f
XX
/2
5
f
X
/2
5
(156 kHz)
f
X
/2
6
(78.1 kHz)
1
0
1
1
f
XX
/2
10
f
X
/2
10
(4.88 kHz)
f
X
/2
11
(2.44 kHz) f
XX
/2
6
f
X
/2
6
(78.1 kHz)
f
X
/2
7
(39.1 kHz)
1
1
0
0
f
XX
/2
11
f
X
/2
11
(2.44 kHz)
f
X
/2
12
(1.22 kHz) f
XX
/2
7
f
X
/2
7
(39.1 kHz)
f
X
/2
8
(19.5 kHz)
1
1
0
1
f
XX
/2
12
f
X
/2
12
(1.22 kHz)
f
X
/2
13
(0.61 kHz) f
XX
/2
8
f
X
/2
8
(19.5 kHz)
f
X
/2
9
(9.8 kHz)
Others
Setting prohibited
TCL37 TCL36 TCL35 TCL34
Selects serial clock of serial interface channel 1
MCS = 1
MCS = 0
0
1
1
0
f
XX
/2
Setting prohibited
f
X
/2
2
(1.25 MHz)
0
1
1
1
f
XX
/2
2
f
X
/2
2
(1.25 MHz)
f
X
/2
3
(625 kHz)
1
0
0
0
f
XX
/2
3
f
X
/2
3
(625 kHz)
f
X
/2
4
(313 kHz)
1
0
0
1
f
XX
/2
4
f
X
/2
4
(313 kHz)
f
X
/2
5
(156 kHz)
1
0
1
0
f
XX
/2
5
f
X
/2
5
(156 kHz)
f
X
/2
6
(78.1 kHz)
1
0
1
1
f
XX
/2
6
f
X
/2
6
(78.1 kHz)
f
X
/2
7
(39.1 kHz)
1
1
0
0
f
XX
/2
7
f
X
/2
7
(39.1 kHz)
f
X
/2
8
(19.5 kHz)
1
1
0
1
f
XX
/2
8
f
X
/2
8
(19.5 kHz)
f
X
/2
9
(9.8 kHz)
Others
Setting prohibited
Caution Before writing new data to TCL3, stop serial transfer once.
Remarks 1.
f
XX
: main system clock frequency (f
X
or f
X
/2)
: main system clock oscillation frequency
3.
MCS: bit 0 of oscillation mode select register (OSMS)
4.
( ) : at f
X
= 5.0 MHz
2.
f
X
Serial clock in 3-wire serial I/O or 2-wire
serial I/O mode
Serial clock in I
2
C bus mode
7
6
5
4
3
2
Symbol
1
0
FF43H
TCL30
TCL3
TCL31
TCL33 TCL32
TCL34
TCL35
TCL36
TCL37
Address
At reset
R/W
88H
R/W