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

Noel Fung

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?

over 3 years ago

0 Noel Fung over 3 years ago

TI__Guru* 81490 points

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