C672x Wake up method from power down mode (PD2, PD3).

Takahiro Ogo

Genius 5940 points

Hi,

DSP wake up by "Device Reset" from PD2, PD3. In the "TMS320C67x/C67x+ DSP CPU and Instruction Set Reference Guide"

At this time, Where address does DSP wake up and run from?

1)from ROM/Boot (same as Power on Reset)
2)from code address after this processed PD2/PD3.

Which is correct?

Thanks

over 15 years ago

0 tlee over 15 years ago

TI__Guru 62975 points

The DSP power-down modes (PD1, PD2, PD3) are not supported on C672x devices.

0 Takahiro Ogo over 15 years ago in reply to tlee

Genius 5940 points

Thank you for the reply.
I suspected so. I tried this the other day.
Is the description of pd1/2/3 on reference guide (SPRU733) wrong for 672(67+ core) device ?

0 tlee over 15 years ago in reply to Takahiro Ogo

TI__Guru 62975 points

The PD logic in the DSP module is there, but it isn't hooked up. From a practical standpoint, you are correct that the PD description does not apply to the C672x devices.

-Tommy

0 mi1980 over 12 years ago in reply to tlee

Prodigy 190 points

Hi there,

Once it is confirmed that PD modes are not available for C672x, Is there any way to put the C6727 in a low-power consumption mode?

Thanks

regards

Processors

Processors forum

C672x Wake up method from power down mode (PD2, PD3).