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AM2732: Sleep mode

user244678
Expert 1365 points

Part Number: AM2732

Hi,

There is a description of sleep mode in TRM spruiu0a.pdf.

I didn't understand how to set to enter sleep mode and how to return from sleep mode even if I looked at TRM, so please let me know.

It would be helpful if you could provide some sample code.

Best Regards,

Hiroyuki Taguchi

  • 0
    TI__Mastermind 25283 points

    Hello Hiroyuki,

    Can you share the page number and reference of "sleep mode" you are referring to in the spruiu0a.pdf for additional context?

    Best Regards,

    Zackary Fleenor

  • +1 in reply to Fleenor
    Expert 1365 points

    Hi Zackary,

    Thank you for yor reply.

    I refer to the following passages in TRM.

    What I want to do is implement Low Power Mode for the entire AM2732 device.

    spruiu0a.pdf

    page.2510, 10.1.1.4.2.2 Device-Level Power Down

    page.4199, 10.5.1.2.5 Low Power Modes

    Best Regards,

    Hiroyuki

  • 0 in reply to user244678
    TI__Mastermind 25283 points

    Hey Hiroyuki,

    page.2510, 10.1.1.4.2.2 Device-Level Power Down

    - The Power-down (low-power) mode referenced here is specifically regarding operation of the GIO module within the SoC.

    page.4199, 10.5.1.2.5 Low Power Modes

    - The Power Operating Modes described here (Run, Doze, Snooze, and Sleep) are not applicable to the AM273x device.

    These sections need some cleanup to prevent any further confusion, the SITARAAPPS-2904 ticket has been filed for tracking this update.

    Regardless of these details, the AM273x device can still be manually configured to mimic a "Low Power Mode" with a variety of strategies. The techniques include:

    • Static programming of the device’s digital cores, peripherals and analog circuits in appropriate high-performance and low-power states.
    • Dynamic transitions between component power states. 
    • Switching off the bias current, or power supply.
    • Switching off clock inputs of a component, or significantly reducing the clock frequency.

    These techniques should be implemented in User Application-level code and are enabled by API's for SoC Specific functions.

    https://dev.ti.com/tirex/explore/node?node=A__AOuOXJ73bpHQO8vIZvJ1Pw__com.ti.MCU_PLUS_ACADEMY_AM273X__VOimlOI__LATEST

    Best Regards,

    Zackary Fleenor