Data Sheet
CC1101
SWRS061B Page 82 of 93
0x24: FSCAL2 – Frequency Synthesizer Calibration
Bit Field Name Reset R/W Description
7:6 Reserved R0
5 VCO_CORE_H_EN 0 R/W Choose high (1) / low (0) VCO
4:0 FSCAL2[4:0] 10 (0x0A) R/W Frequency synthesizer calibration result register. VCO current calibration
result and override value
Fast frequency hopping without calibration for each hop can be done by
calibrating upfront for each frequency and saving the resulting FSCAL3,
FSCAL2 and FSCAL1 register values. Between each frequency hop,
calibration can be replaced by writing the FSCAL3, FSCAL2 and FSCAL1
register values corresponding to the next RF frequency.
0x25: FSCAL1 – Frequency Synthesizer Calibration
Bit Field Name Reset R/W Description
7:6 Reserved R0
5:0 FSCAL1[5:0] 32 (0x20) R/W Frequency synthesizer calibration result register. Capacitor array setting
for VCO coarse tuning.
Fast frequency hopping without calibration for each hop can be done by
calibrating upfront for each frequency and saving the resulting FSCAL3,
FSCAL2 and FSCAL1 register values. Between each frequency hop,
calibration can be replaced by writing the FSCAL3, FSCAL2 and FSCAL1
register values corresponding to the next RF frequency.
0x26: FSCAL0 – Frequency Synthesizer Calibration
Bit Field Name Reset R/W Description
7 Reserved R0
6:0 FSCAL0[6:0] 13 (0x0D) R/W Frequency synthesizer calibration control. The value to use in this
register is given by the SmartRF
®
Studio software [7].
0x27: RCCTRL1 – RC Oscillator Configuration
Bit Field Name Reset R/W Description
7 Reserved 0 R0
6:0 RCCTRL1[6:0] 65 (0x41) R/W RC oscillator configuration.
0x28: RCCTRL0 – RC Oscillator Configuration
Bit Field Name Reset R/W Description
7 Reserved 0 R0
6:0 RCCTRL0[6:0] 0 (0x00) R/W RC oscillator configuration.