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CLOCK setting for CC1110

NILESH77489
Intellectual 695 points

Hi

   I am select the clock setting like this for CC1110 is it correct for 433 Mhz carrier frequency?

CLKCON = BIT7| BIT5 | BIT4;

  If this setting is not correct please told mi correct setting for 433 Mhz carrier frequency or base frequency?

  • 0
    TI__Prodigy 360 points

    The CLKCON register settings are unrelated to carrier frequency. The settings that you cite (0xB0) are O.K, and will result in a Timer tic speed of 406.25 kHz.. This is a bit unusual - the default setting of binray 001 for bits 5:3 is the normal setting. This results in a Timer tic speed of 13 MHz.

    The FREQ2, FREQ1, and FREQ0 registers set the carrier frequency. You can use either SmartRF Studio or the formula given in the CC1110 specification to determine the proper settings for the frequency you desire.  For example, for a carrier frequency of 433.000 MHz, FREQ2 - 0x10, FREQ1 = 0xA7, and FREQ0 = 0x62.