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[FAQ] RF synthesizers: If the datasheet shows all 1’s and 0’s in the register maps, do I have to program them?

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Some registers in the register maps do not have configurable register bits but they are fixed to some 1's and 0's, do we have to program these registers?

  • For a particular register, if the suggested register value does not equal to POR (silicon default) value, yes, it is required to be programmed once after Vcc power up or after a RESET.
    One exemption is when it is a read only register.

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