SAM9G46_14 Datasheet, PDF (342/1286 Pages) ATMEL Corporation – Atmel | SMART ARM-based Embedded MPU

25.10.2 Clock Switching Waveforms
Figure 25-3. Switch Master Clock from Slow Clock to PLLA Clock
Slow Clock
PLL Clock
LOCK
MCKRDY
Master Clock
Write PMC_MCKR
Figure 25-4. Switch Master Clock from Main Clock to Slow Clock
Slow Clock
Main Clock
MCKRDY
Master Clock
Write PMC_MCKR
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SAM9G46 Series [DATASHEET]
Atmel-11028F-ATARM-SAM9G46-Datasheet_16-Oct-14