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AM5728: pull-up and pull-down resistor

Makoto Oka
Intellectual 830 points

Part Number: AM5728

The pull-up and pull-down resistors can be set by the register settings in each pin of the AM5728BABCXA. Please tell us how much resistance the resistance constant is.
Specifically, it is the value of the pull-up/pull-down resistor in the following cases.
Ctrl_core_pad_MCASP3_AXR0
Ctrl_core_pad_MCASP3_AXR1

  • 0
    TI__Guru 57825 points

    In table Dual Voltage LVCMOS DC Electrical Characteristics, the current values (uA) are provide for pull-up and pull-down resistors.  You can use V=I*R to calculate the resistance values.  For example, below is the table for 1.8V IO

    The pulldown value (typical) is 120uA.  Thus 1.8V = R x 120uA, R = 15K-ohm