TMS320C5545: Minimum power consumption (sleep mode) and wake up time

Part Number:TMS320C5545

Hello,

I am building a device that will be voice controlled and runs on batteries therefore power consumption needs to be minimum.  I am using a microphone array with  piezo mems that have a wake-on-sound feature so they can wake-up the DSP when a sound above a certain SPL threshold is detected.  I plan to use the TMS320C5545 DSP and I am trying to find out if this solution is viable considering that I need to capture a wake word so the DSP needs to wake up very fast to process the voice input sent by the mems microphones.

1) What is the minimum power consumption in idle/sleep mode of the C5545 DSP? (I found 0.7 mW in the document SPRABN0A.  Is this correct?)

2) What is the wake time and procedure from idle/sleep mode?  Will the DSP wake up fast enough to process the audio and wake word receive from the mems microphones?

3) If I shutdown the power completely on the DSP, how long would it take to start-up from zero?  Is there a possibility to start fast enough to process the audio stream without missing the wake word?

Any guidelines or design example you could point me to would be helpful.

Thanks in advance,

Charles