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Forum Post: RE: RTC to control C674X

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Hi Sivaraj


I read the documentation you pointed to me and it turns out that we cannot re-enable the power supplies to the DSP using the Alarm_out line from the RTC as it goes through the I/O section which is also powered off. It would have been nice to have been able to re-power the DSP core etc with the Alarm_out signal.

Now we have to look at another controller to do this function. The power consumption of the DSP in deep sleep is just too much at 11mW and will drain the battery quickly in our application.


Rgrds

Manjula


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