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● Clock Modulator Control Register (CMCR)
The Control Register (CMCR) has the following functions:
Set the modulator to power down mode
Modulator enable/disable in frequency modulation mode
Indicates the status of the modulator
Figure 2-2 Configuration of the clock modulator control register (CMCR)
0004BB
H
R/W
:
R
:
X
:
-
:
:
The bits FMODRUN, FMOD, PDX control or indicate the status of the frequency modulation mode. Frequency
modulation mode needs some additional configuration (CMPR register).
7
6
5
4
3
2
1
FMOD
Re-
Re-
Re-
-
FMOD PDX
-
served
served
served
RUN
-
R/W R/W R/W R
R/W R/W
-
Readable and writable
Read only
Undefined value
Undefined
Initial value
0
CMCR
Initial value
X 0 0 1 0 X 0 0
B
bit 0
PDX
0
power down mode
1
power up
bit 1
FMOD
Frequency modulation enable bit
0
Frequency modulation mode disabled
1
Frequency modulation mode enabled
bit 3
FMOD
Modulator status in frequency modulation mode
RUN
0
Clock frequency unmodulated
1
Clock frequency modulated
bit 4,5,6
bit 4
Always write 1 to this bit
bit 5,6
Always write 0 to this bit
Chapter 17 Clock Modulator
2.Clock Modulator Registers
Power down bit
Reserved
241
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