Tool/software:
HI TI experts,
I have a question on the SOC ROC and Dynamic Voltage scaling.
I see the Core Voltage being 0.75V or 0.85V
Does the AM6x processor families support dynamic voltage scaling
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Tool/software:
HI TI experts,
I have a question on the SOC ROC and Dynamic Voltage scaling.
I see the Core Voltage being 0.75V or 0.85V
Does the AM6x processor families support dynamic voltage scaling
Hi Board designers,
Thank you for checking. This is an important query. Switching VDD_CORE after device reset has not been characterized or validated. The behavior or liability impact is unknown.
Refer below inputs for SOC ROC and dynamic voltage scaling:
Our datasheets only define fixed voltage ranges for each supply. Refer to the below section of the data sheet:
7.5 Recommended Operating Conditions
This implies that dynamic voltage scaling is not supported.
If voltage scaling was supported, we would have defined larger operating ranges and the valid operating ranges for each OPP would be defined in the Device Operating Points table similar to what was done in the AM335x datasheet.
The SOC is recommended to be held in reset condition during supply ramp. We do not support any code execution when dynamically changing from one valid core operating range to the other valid core operating range.
AM62x devices do not support voltage scaling. Switching VDD_CORE after device reset has not been characterized or validated. The behavior or liability impact is unknown.
Changing the core voltage is not allowed after the device has been released from reset. If you turn off the core supply, we expect you to turn off all power rails and ramp them down per the power-down sequence and wait until they all decay below 300mv before turning on power again.
AM62x devices only support CPU frequency scaling.
PMIC use case:
AM62A does not support dynamic voltage scaling (DVS). The required VDD_CORE voltage must be pre-configured on the PMIC NVM settings by default.
References
(+) AM625: Change CPU frequency - Processors forum - Processors - TI E2E support forums
Regards,
Sreenivasa
Hi All,
Additional inputs.
Refer below FAQ related to SOC ROC.
Regards,
Sreenivasa