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DP83TC811R-Q1: remote wake up function

fuqiang liu
Prodigy 10 points
Part Number: DP83TC811R-Q1

If Wol is activated, there will be a signal toggling on the INH pin, and this PIN can be used to control the rest power supply on the board, is it?

Do you have any reference design for the remote wake up function?

  • 0
    TI__Genius 16030 points

    WoL will not toggle INH pin. It can only toggle a configured GPIO (GPIO configured to toggle on reception of WoL packets).

    If you are interested in TC-10 like remote sleep entry and exit use-cases, I will suggest you to use DP83TC812. 812 can wake up remotely and will toggle INH pin.

    --

    Regards,

    Vikram 

  • 0 in reply to Vikram Sharma
    Prodigy 10 points

    Hi Vikram Sharma99,

    Thanks for your reply. I am sorry that i didnot catch up your meaning.

    On my understanding, if DP83TC811R-Q1 is in sleep mode then the INH will be high, and if it is in other mode, the INH will be low, is it right?
    If so, i can use this INH pin to control other ciruicts on my board in oder to synchronize the status of  DP83TC811R-Q1. That means if DP83TC811R-Q1 in sleep mode, other circuits on my board will also be in sleep mode is controlled by INH pin through some logic device of MCU.

  • 0 in reply to fuqiang liu
    TI__Genius 16030 points

    WoL is different from TC-10 sleep mode. For using WoL PHY will be active and not in sleep mode and hence it will not be controlling INH signal . Are you interested in sleep mode or WoL? 

  • 0 in reply to Vikram Sharma
    Prodigy 10 points

    Hi Vikram Sharma99,

    Thanks for your reply. I am sorry i am new to this area.

    I am instersted in both sleep mode and WoL. 

    If WoL is used, PHY will be active and INH will be low, is it right?

    If PHY is in sleep mode, INH will be high, is it right?

  • 0 in reply to fuqiang liu
    Prodigy 10 points

    From datasheet, there is a decrption like this:


    When a qualifying WoL frame is received, the DP83TC811R-Q1 WoL
    logic circuit is able to generate a user defined event (either pulses or level change) through any of the GPIO pins
    or a status interrupt flag to inform a connected controller that a wake event has occurred.

    How can we define event through GPIO if WoL frame is received?

  • 0 in reply to fuqiang liu
    TI__Genius 16030 points

    You are correct about the INH levels.

  • 0 in reply to fuqiang liu
    TI__Genius 16030 points

    Hello

    You may program IO_CNTRL1, IO_CNTRL2 registers to get the required indication during WoL event. 

    Depending upon the functionality defined in WoL_CFG, these programmed GPIOs will toggle.

    --

    Regards,

    Vikram