RFM92 Datasheet, PDF (33/126 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

RFM92W/93W V3.0
4.1.3. Operation of the LoRa^TM Modem
4.1.3.1. Operating Mode Control
The operating modes of the LoRa^TM modem are accessed by enabling LoRa^TM mode (setting the LongRangeMode bit of
RegOpMode). Depending upon the operating mode selected the range of functionality and register access is given by the
following table:
Table 15 LoRa^TM Operating Mode Functionality
Operating Mode
SLEEP
STAND-BY
FSTX
FSRX
TX
RXCONTINUOUS
RXSINGLE
CAD
Description
Low-power mode. In this mode only SPI and configuration registers are accessible. Lora FIFO is not
accessible.
Note that this is the only mode permissible to switch between FSK/OOK mode and LoRa mode.
Both crystal oscillator and LoRa baseband blocks are turned on. RF front-end and PLLs are disabled
This is a frequency synthesis mode for transmission. The PLL selected for transmission is locked and active
at the transmit frequency. The RF front-end is off.
This is a frequency synthesis mode for reception. The PLL selected for reception is locked and active at the
receive frequency. The RF front-end is off.
When activated the RFM92W/93W powers all remaining blocks required for transmit, ramps the PA,
transmits the packet and returns to Stand-by mode.
When activated the RFM92W/93W powers all remaining blocks required for reception, processing all
received data until a new user request is made to change operating mode.
When activated the RFM92W/93W powers all remaining blocks required for reception, remains in this state
until a valid packet has been received and then returns to Stand-by mode.
When in CAD mode, the device will check a given channel to detect LoRa preamble signal
It is possible to access any mode from any other mode by changing the value in the RegOpMode register.
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