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TRS3122E: auto powerdown plus wake up source

rock shen
Intellectual 585 points
Part Number: TRS3122E

Hi,Sir:

     For TRS3122E IC,configurate FORCEOFF# = HIGH and FORCEON = LOW to enable auto powerdown plus,

Both RINx,DOUTx,DINx,ROUTx signal could wake up the system?

Or just only DINx,RINx?

Or other cases?

Please also advice the case when time elapsed since last RIN or DIN transition above 30seconds.

Thanks!

  • 0
    TI__Mastermind 25705 points

    Rock,

    Either the driver or receiver can wake the device up. If the device senses no activity on the driver or receiver inputs for 30s, it shuts the internal charge pump off to consume minimum power. 

    Please let me know if you have more questions.

    Regards,

    Hao

  • 0 in reply to Hao L
    Intellectual 585 points

    Dear Hao:

             you mean although the time is over 30sec,

    the IC enter the auto powerdown mode,

    both the driver and receiver could wake up the IC,

    right?

    Thanks!

  • 0 in reply to rock shen
    TI__Mastermind 25705 points

    Rock,

    I'm sorry I didn't quite get your question. To clarify, it takes >30s from the active to the power down mode, while it takes around 30us from the power down to the active mode. It needs both the driver and receiver of being inactive to enter the power down mode, while it only needs one of the driver or receiver being activated to get out of the power down mode.

    Please let me know if it makes sense to you.

    Regards,

    Hao