How to deal with the ENGCLK PIN when it's not be used in MPC5775 hardware design

[ethan-li]

Hi,

  Is there any considerations about how to deal with the ENGCLK PIN, when it's not used in MPC5775E hardware design?

   Can it be left floating? Or be Pull-down through a resistor? If pull-down through a resistor,  what are the requirements of the resistor?

    Appreciate your help!

[davidtosenovjan]

Hi, as it is output only pin I would recommend you to let it floating and disable output buffer i.e. clear SIU_PCR214(OBE) in order to reduce EMI.