CHAPTER 11 CLOCK OUTPUT CONTROLLER
Preliminary User’s Manual U16315EJ1V0UD
221
Figure 11-2. Format of Clock Output Selection Register (CKS)
Address: FF40H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
CKS
0
0
0
CLOE
CCS3
CCS2
CCS1
CCS0
CLOE
PCL output enable/disable specification
0
Clock division circuit operation stopped. PCL fixed to low level.
1
Clock division circuit operation enabled. PCL output enabled.
CCS3
CCS2
CCS1
CCS0
PCL output clock selection
0
0
0
0
f
X
(10 MHz)
0
0
0
1
f
X
/2 (5 MHz)
0
0
1
0
f
X
/2
2
(2.5 MHz)
0
0
1
1
f
X
/2
3
(1.25 MHz)
0
1
0
0
f
X
/2
4
(625 kHz)
0
1
0
1
f
X
/2
5
(312.5 kHz)
0
1
1
0
f
X
/2
6
(156.25 kHz)
0
1
1
1
f
X
/2
7
(78.125 kHz)
1
0
0
0
f
XT
(32.768 kHz)
Other than above
Setting prohibited
Remarks 1.
f
X
: X1 input clock oscillation frequency
2.
f
XT
: Subsystem clock oscillation frequency
3.
Figures in parentheses are for operation with f
X
= 10 MHz or f
XT
= 32.768 kHz.