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TDA4VM: Boot Mode Pin direction ?

jinhwan Jeong
Prodigy 170 points

Part Number: TDA4VM

Hello

I want to use AE11 Pin as Boot Mode and Vout_DE Pin. (MUX)

Boot Mode is used as Input at booting  sequence and VOUT_DE changes its function afterwards.

Should I use the Buffer IC  applied to the reference schematic?

  • +1
    TI__Guru 54565 points

    A buffer is not required.  The pin will be an input during reset and after boot.  It is recommended to use a pull resistor to set the BOOTMODE to the desired state.  Once software has booted and the pin changed to function as VOUT_DE, the pin can function as an output and over-drive the pull resistor.