RFM26W Datasheet, PDF (18/34 Pages) List of Unclassifed Manufacturers – ISM Transceiver module

RFM26W
3.3.8. RX State
The RX state may be entered from any of the IDLE modes by using the “Start RX” or “Change State” API
command. A built-in sequencer takes care of all the actions required to transition from one of the IDLE modes to
the RX state. The following sequence of events will occur automatically to get the chip into RX mode when going
from STANDBY mode to RX mode:
1. Enable the digital LDO and the analog LDOs.
2. Start up crystal oscillator and wait until ready (controlled by an internal timer).
3. Enable PLL.
4. Calibrate VCO
5. Wait until PLL settles to required receive frequency (controlled by an internal timer).
6. Enable receiver circuits: LNA, mixers, and ADC.
7. Enable receive mode in the digital modem.
Depending on the configuration of the radio all or some of the following functions will be performed automatically by
the digital modem: AGC, AFC (optional), update status registers, bit synchronization, packet handling (optional)
including sync word, header check, and CRC. Similar to the TX state the next state after RX may be defined in the
“Start RX” API command.
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