Data Sheet

Page 31
RFM95/96/97/98(W)
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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 61 LoRa
TM
Operating Mode Functionality
Operating Mode Description
SLEEP
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.
STAND-BY
both Crystal oscillator and Lorabaseband blocks are turned on.RF part and PLLs are disabled
FSTX
This is a frequency synthesis mode for transmission. The PLL selected for transmission is locked and active
at the transmit frequency. The RF part is off.
FSRX
This is a frequency synthesis mode for reception. The PLL selected for reception is locked and active at the
receive frequency. The RF part is off.
TX
When activated the RFM95/96/97/98(W) powers all remaining blocks required for transmit, ramps the PA,
transmits the packet and returns to Stand-by mode.
RXCONTINUOUS
When activated the RFM95/96/97/98(W) powers all remaining blocks required for reception,
processing all received data until a new user request is made to change operating mode.
RXSINGLE
When activated the RFM95/96/97/98(W) 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.
CAD
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.