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Chapter 5
Clock Generator
Preliminary User’s Manual U17763EE1V1UD00
5.4 MTRESET Release of the MTRC
If the MTRC is reset, the MRCAL register will be reset, too. Therefore the beforehand stored MRCAL
register value has to be written back.
Please see the following procedure for the MTRESET Release of the MTRC.
Figure 5-5:
Flowchart for MTRESET Release
Initial Settings
Set PCM0 pin = 1
Set MRCALEN = 0
The value stored in the
EEPROM is loaded to
the MRCAL register
uncalibrated
RingOsc is running
FG2 pin settings (SOB1, SCKB1, SIB1, PCM0)
RingOSC oscillation start after eliminating noise time of PCM0 pin.
MRINGCTL operation is enabled.
soft control
serial communication
Ring Oscillator is stopped
calibrated
RingOsc is running
wait for Eliminating noise time + Oscillation stabilization time
wait for Oscillation stabilization time
MTRESET = 1
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