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CC1050 Datasheet(PDF) 19 Page - Texas Instruments |
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CC1050 Datasheet(HTML) 19 Page - Texas Instruments |
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19 / 40 page  CC1050 SWRS044 Page 19 of 40 Write CAL: CAL_START=0 End of calibration Wait for maximum 26 ms, or Read CAL and wait until CAL_COMPLETE=1 Start single calibration Frequency register A is calibrated first Write MAIN: F_REG = 0; TX_PD = 0; FS_PD = 0 CORE_PD = 0; BIAS_PD = 0; RESET_N=1 Write FREQ_A, FREQ_B If DR>=38kBd then {write TEST4: L2KIO=3Fh, PRESCALER = 04h} Write CAL: CAL_DUAL = 0 Frequency register A and B are used for two different channels Write CAL: CAL_START=1 The result of the calibration is stored for frequency FREQ_A and can be read from the status registers TEST0 and TEST2 when F_REG = 0 Write CURRENT: VCO_CURRENT = Current Write PA_POW = 00h ‘Current’ is the VCO current to be used for both frequencies PA is turned off to prevent spurious emission Write CAL: CAL_START=0 Wait for 26 ms, or Read CAL and wait until CAL_COMPLETE=1 Frequency register B is calibrated second Write MAIN: F_REG = 1 Write CAL: CAL_START=1 Calibration time depend on the reference frequency, see text. The result of the calibration is stored for frequency FREQ_B and can be read from the status registers TEST0 and TEST2 when F_REG = 1 Write CAL: CAL_START=0 End of calibration Wait for maximum 26 ms, or Read CAL and wait until CAL_COMPLETE=1 Start single calibration Frequency register A is calibrated first Write MAIN: F_REG = 0; TX_PD = 0; FS_PD = 0 CORE_PD = 0; BIAS_PD = 0; RESET_N=1 Write FREQ_A, FREQ_B If DR>=38kBd then {write TEST4: L2KIO=3Fh, PRESCALER = 04h} Write CAL: CAL_DUAL = 0 Frequency register A and B are used for two different channels Write CAL: CAL_START=1 The result of the calibration is stored for frequency FREQ_A and can be read from the status registers TEST0 and TEST2 when F_REG = 0 Write CURRENT: VCO_CURRENT = Current Write PA_POW = 00h ‘Current’ is the VCO current to be used for both frequencies PA is turned off to prevent spurious emission Write CAL: CAL_START=0 Wait for 26 ms, or Read CAL and wait until CAL_COMPLETE=1 Frequency register B is calibrated second Write MAIN: F_REG = 1 Write CAL: CAL_START=1 Calibration time depend on the reference frequency, see text. The result of the calibration is stored for frequency FREQ_B and can be read from the status registers TEST0 and TEST2 when F_REG = 1 Figure 11. Single calibration algorithm for two different frequencies |
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