CC2550 Datasheet, PDF (44/50 Pages) Texas Instruments – Single Chip Low Cost Low Power RF-Transmitter

CC2550
Bit Field Name
7:6 Reserved
5:0 FSCAL2[5:0]
0x24: FSCAL2 – Frequency synthesizer calibration
Reset R/W Description
R0
10
R/W
(0x0A)
Frequency synthesizer calibration result register.
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.
Bit Field Name
7:6 Reserved
5:0 FSCAL1[5:0]
0x25: FSCAL1 – Frequency synthesizer calibration
Reset R/W Description
R0
32
R/W Frequency synthesizer calibration result register.
(0x20)
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.
Bit Field Name
7 Reserved
6:5 Reserved
4:0 FSCAL0[4:0]
0x26: FSCAL0 – Frequency synthesizer calibration
Reset R/W Description
R0
0 (00) R
Defined on the transceiver version
13
R/W Frequency synthesizer calibration control. The value to use in
(0x0D)
register field is given by the SmartRF^® Studio software.
0x29: FSTEST – Frequency synthesizer calibration control
Bit Field Name
Reset R/W Description
7:0 FSTEST[7:0]
87
R/W For test only. Do not write to this register.
(0x57)
Bit Field Name
7 PTEST[7:0]
0x2A: PTEST – Production test
Reset R/W Description
127 R/W Writing 0xBF to this register makes the on-chip temperature sensor
(0x7F)
available in the IDLE state. The default 0x7F value should then be
written back before leaving the IDLE state.
Other use of this register is for test only.
Bit Field Name
7:0 AGCTEST[7:0]
0x2B: AGCTEST – AGC test
Reset R/W Description
63
(0x3F)
R/W For test only. Do not write to this register.
Preliminary Data Sheet (rev. 1.1) SWRS039
Page 44 of 51