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wake up dsp from low power mode

jie tang
Prodigy 90 points


 i have two basic questions regarding to dsp wakeup from the low power mode

(1) According to the TI manual (sprs439i.pdf),  the watchdog interrupt can wakeup the dsp from the standby mode.   would this watchdog interrupt cause a dsp reset?

(2) the wakup- signal  for  the low power mode must be a 'low pulse' ? or it is ok to use a falling edge.  

best,

Jie

  • 0
    TI__Guru* 87155 points

    Jie,

    (1) Watchdog interrupt wakes up MCU from standbymode but it does not reset the MCU.

    (2) Falling edge is enough but it must remain low for the duration mentioned in Table "STANDBY Mode Switching Characteristics" of datasheet

    Thanks and regards,

    Vamsi