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Reducing the power consumption

Kaka
Guru 24520 points

Dear All,

Would you please advice to me about my request?

[Request]

　Please let me know how to  reduce the power consumption of DM8148 in generally.

My customer requested to us that reduce the power as much as  possible.

Best regards,

Kaka

  • 0
    TI__Guru**** 170625 points

    Hi Kaka,

    Please refer to the below links:

    http://processors.wiki.ti.com/index.php/DM814x_AM387x_Power_Estimation

    http://processors.wiki.ti.com/index.php/TI81XX_PSP_User_Guide#TI814X_4

    http://processors.wiki.ti.com/index.php/DM814x_AM387x_PM_Suspend_resume_overview

    http://processors.wiki.ti.com/index.php/DM814x_Hardware_Design_Guide#Designing_the_Power_Subsystem

    http://processors.wiki.ti.com/index.php/DM814x_Overview#SmartReflex.E2.84.A2

    http://processors.wiki.ti.com/index.php/TI81XX_PSP_PM_DVFS_User_Guide

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/181171.aspx

    http://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/716/t/256582.aspx

    Regards,
    Pavel

  • 0 in reply to Pavel Botev
    Guru 24520 points

    Hi Pavel,

    Thank you for your response.  I will check them.

    Please let me confirm the following question.

    Can customer use those solutions even though the device revision is 3.0?

    And do you have a power reduce solution during Active state?

     * Regarding to your solutions, it seems that reduce the power during idle or standby.

    If you have any questions, please let me know.

    Best regards.

    Kaka

  • 0 in reply to Kaka
    TI__Guru**** 170625 points

    Kaka,

    Kato Motoki said:
    Can customer use those solutions even though the device revision is 3.0?

    Yes, you can. The differences between 3.0 rev and older revisions is documented in the DM814x silicon errata.

    Kato Motoki said:

    And do you have a power reduce solution during Active state?

     * Regarding to your solutions, it seems that reduce the power during idle or standby.

    What I can recommend you is to power off all the power domains that you do not need during the Active state. Refer to the DM814x TRM, section 2.1.4 Power Management

    The PRCM module manages the switching on and off of the power supply to the device modules. To minimize device power consumption, the power to the modules can be switched off when they are not in use. Independent power control of sections of the device allows the PRCM module to turn on and off specific sections of the device without affecting the others.

    Best regards,
    Pavel

  • 0 in reply to Pavel Botev
    Guru 24520 points

    Hi Pavel,

    Thank you for you supports.

    I will suggest to customer with your solution.

    If I have more questions, please let me confirm them.

    Best regards.

    Kaka