CC2550 Datasheet, PDF (42/50 Pages) Texas Instruments – Single Chip Low Cost Low Power RF-Transmitter

CC2550
Bit Field Name
Reset
R/W Description
2:0 DEVIATION_M[2:0]
7 (111)
R/W When MSK modulation is enabled:
Sets fraction of symbol period used for phase change.
When FSK modulation is enabled:
Deviation mantissa, interpreted as a 4-bit value with MSB
implicit 1. The resulting FSK deviation is given by:
f _dev
=
f _xosc
2¹⁷
⋅ (8 + DEVIATION _ M ) ⋅ 2^{DEVIATION _ E}
The default values give ±47.607kHz deviation, assuming
26.0MHz crystal frequency.
0x17: MCSM1 – Main Radio Control State Machine configuration
Bit Field Name
Reset
R/W Description
7:6 Reserved
5:2 Reserved
1:0 TXOFF_MODE[1:0]
0 (00)
R0
R0 Defined on the transceiver version
R/W Select what should happen when a packet has been sent
(TX)
Setting Next state after finishing packet transmission
0 (00) IDLE
1 (01) FSTXON
2 (10) Stay in TX (start sending preamble)
3 (11)
Do not use, not implemented on CC2550
(Go to RX)
0x18: MCSM0 – Main Radio Control State Machine configuration
Bit Field Name
Reset R/W Description
7:6 Reserved
R0
Preliminary Data Sheet (rev. 1.1) SWRS039
Page 42 of 51