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Original question:

TUSB212: Interface forum: TUSB212 control via I2C

TUSB212: Clarification on tunning resistors.

Punsara Mahawela
Prodigy 40 points
Part Number: TUSB212

Tool/software:

Hi, I want a clarification on the following.

Do we need to place EQ and DC_BOOST resistors, if we are using I2C mode?

Thanks.

  • +1
    TI__Mastermind 23985 points

    Hi Punsara,

    For I2C mode, the initial setting for EQ and DC_BOOST is based on the resistor setup of those pins. So if you were to leave both the pins floating at device start-up/reset, you would start with EQ level 3, and DC_BOOST level mid. From there, you would be able to modify the values of these pins/registers via I2C. 

    Typically, we recommend keeping EQ at level 0 or 1, since level 3 can cause over-compensation or disconnects.

    Please let me know if you have any other questions.

    Thanks,

    Ryan

  • 0 in reply to Ryan Kitto
    Prodigy 40 points

    Thank you for the clarification.