166
Chapter 4
Clock Generator
Preliminary User’s Manual U17566EE1V2UM00
(5)
CLMCS - Sub oscillator clock monitor control register
The 8-bit CLMCS register is used to start the monitor of the sub oscillator
clock.
Access
This register can be read/written in 8-bit or 1-bit units.
Address
FFFF F71A
H
.
Initial Value
00
H
. The register is initialized by any reset.
Setting CLMCS.CMRT to 1 generates a trigger to activate the sub oscillator
clock monitor.
Note
1.
The sub oscillator clock monitor can only be started, if it has been enabled
by setting CLMS.CLMES to 1.
2.
Make sure that the sub oscillator stabilization time has elapsed before
starting the clock monitor.
Caution
Starting the sub oscillator clock monitor requires a special procedure. Refer to
“Operation of the Clock Monitors” on page 185
.
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
CMRT
R
R
R
R
R
R
R
R/W
Table 4-23
CLMCS register contents
Bit position
Bit name
Function
0
CMRT
Sub oscillator clock monitor start:
0: Clock monitor
for
sub oscillator off.
1: Clock monitor for sub oscillator on.
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