Texas Instruments SimpleLink CC2620 Technical Reference Manual page 1492

RF Core HAL
On start, the radio CPU sets up parameters for the operational mode given by mode.radioMode, with the
modifications given in pRegOverride, a pointer to a structure containing override values for certain
hardware registers, radio configuration controlled by the radio CPU, and protocol-related variables. If
pRegOverride is NULL, no registers are overridden.
Running CMD_RADIO_SETUP or another radio setup command is mandatory before using any command
that uses the receiver, transmitter, or frequency synthesizer. If the RF core is reset, CMD_RADIO_SETUP
must be re-run.
The CMD_RADIO_SETUP performs operations as follows:
• If mode != 0xFF, configure modem and RFE according to the given mode.
• If mode != 0xFF, copy firmware-defined parameters according to the given mode.
• If config.bNoAdi0Setup = 0, prepare ADI 0 initialization values according to config.frontEndMode,
config.biasMode, and config.lnaIbBoost.
• If config.bNoAdi0Setup = 0 and config.bNoAdi0Trim = 0, modify ADI 0 values as found in FCFG1.
• If config.bNoAdi1Setup = 0, prepare ADI 1 initialization values.
• If config.bNoAdi1Setup = 0 and config.bNoAdi1Trim = 0, modify ADI 1 values as found in FCFG1.
• If config.bNoFsPowerup = 0, prepare register values for writing to DLO_DTX module, which depends
on the loDivider setting.
• Go through override list, and process as follows
– Update all firmware-defined registers.
– Update all digital hardware registers directly, except in the FSCA module if it causes a DDI write. If
config.bNoFsPowerup = 0, change the prepared values, otherwise ignore.
– For ADI 0 registers, ignore if config.bNoAdi0Ovr = 1; otherwise:
• If config.bNoAdi0Setup = 0, update the prepared values.
• If config.bNoAdi0Setup = 1, write directly to ADI 0.
– For ADI 1 registers, ignore if config.bNoAdi1Ovr = 1; otherwise:
• If config.bNoAdi1Setup = 0, update the prepared values.
• If config.bNoAdi1Setup = 1, write directly to ADI 1.
• If mode != 0xFF and config.bNoAdi0Trim = 0, modify the RSSI offset according to the value from
FCFG1.
• If config.bNoAdi0Setup = 0 and config.bNoAdi0Trim = 0, modify certain trim values based on
config.frontEndMode and applicable software-defined parameters.
• If config.bNoAdi0Setup = 0, write prepared values to ADI 0.
• If config.bNoAdi1Setup = 0, write prepared values to ADI 1.
• If config.bNoFsPowerup = 0, power up and reset synthesizer, then write prepared DLO_DTX registers
to the module as if CMD_FS_POWERUP had been called.
If trim values are applied by setting config.bNoAdi0Trim = 0 or config.bNoAdi1Trim = 0, the trim values are
read from FCFG1 [18] unless they have otherwise been provided. If these values are read from FCFG1
the VIMS module must be powered, allowing flash reads. To avoid reading FCFG1 while running
CMD_RADIO_SETUP, the values may be read in advance using CMD_READ_TRIM, or provided using
CMD_SET_TRIM.
The txPower parameter is stored and applied every time transmission of a packet starts to set an output
power with temperature compensation. This setting can be changed later with the command
CMD_SET_TX_POWER (see
The override value structure is a string of 32-bit entries provided by TI or produced by
1492
Radio
Section 23.3.4.16).
Copyright © 2015, Texas Instruments Incorporated
SmartRF
SWCU117C – February 2015 – Revised September 2015
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