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CDCE62005: Recommended pin condition during power up

Taketo Sato
Genius 9755 points
Part Number: CDCE62005

Hello team,

Could you let me know if there is any requirement on below pins during power up? for example, it needs to be pulled to GND, floating is fine, and so on.

  •  AUX_IN
  • PRI_REF+/-
  • SEC_REF+/-
  • SPI_CLK
  • SPI_LE
  • SPI_MOSI
  • SPI_MISO

Best regards

  • +1
    TI__Genius 15231 points

    Hi Taketo, 

    Aux is for xtal input only. Can be left floating if not used. 

    Pri_Ref & Sec_Ref, depending on which input you use, connect it with a 1k Ohm resistor to GND. 

    All the SPI pins can be left floating, will default to logic level 1. 

    Regards, 

    Vicente