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STM32 external oscillator tcxo

Question asked by dahim.yael on Mar 2, 2015
Latest reply on Mar 9, 2015 by dahim.yael
I would like to give external oscillators (TCXO, VCXO, etc) a try as HSE but can't find any diagram or documentation about it regarding STM32(F427).
Could you please help with these three questions :
  • OSC_IN connected to oscillator output, OSC_OUT left floating ?
  • Is adding the HSE_BYPASS flag to the HSE register during startup the only required software change ?
  • Can the oscillator start before the STM32 ? or should its startup be controlled by the STM32 ?

Thank you !