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PCM1864-Q1: I2C ready to access

Atsushi Hirai
Expert 5070 points
Part Number: PCM1864-Q1


Hi team,

How long wait time is required for starting I2C communication after DVDD=AVDD=IOVDD=3.3V stable?

The datasheet has POR timing chart as below. Is it depend on the external clock frequency or so?

Please advise.

  • 0
    TI__Mastermind 23050 points

    Hi Hirai-san,

    Unfortunately we don't have a specified startup time. I would suggest a 20 milliseconds delay after the supplies settle before trying to write any registers to give the device some time to enter its default state.

    Best,

    Zak