Sleep mode exit delay for C6678

Gabriele_Giannini

I'm reading about the Sleep mode feature for the C6678 in SPRUGW0C.

So i can put my DSP in a Power Down state using the PDCCMD register and the IDLE instruction and exit from that state receiving a interrupt for wake up.

The question is: how much is the delay for exit from the Sleep State and return to the Normal operation state?

over 10 years ago

0 Ganapathi Dhandapani95 over 10 years ago

TI__Mastermind 28085 points

Hi,

I will check with our internal team and get back to you.

Thanks,

0 Alessandro Dallai over 10 years ago

Intellectual 280 points

Hi Gabriele,
I can’t tell you an exact value, but I just measured that the CPU takes approximately 40~50ns longer to take an interrupt when power down feature is enabled.
I run the core at 1GHz.
Moreover, in my case, the DSP reduces its power consumption by roughly 180mW, compared to IDLE instruction execution without power down enabled.

Kind Regards,
Alessandro

0 Gabriele_Giannini over 10 years ago in reply to Alessandro Dallai

Intellectual 925 points

Thanks Alessandro, this is a very useful data for our work

Best Regards
Gabriele

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Sleep mode exit delay for C6678