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RFM95 Datasheet(PDF) 31 Page - HOPE Microelectronics CO., Ltd.

Part No. RFM95
Description  Low Power Long Range Transceiver Module
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Maker  HOPE [HOPE Microelectronics CO., Ltd.]
Homepage  https://www.hoperf.com/
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 31 page
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Page 31
RFM95/96/97/98(W)
Tel: + 86-755-82973805
Fax: + 86-755-82973550
E-mail: sales@hoperf.com http:/ / www.hoperf.com
4.1.3. Operation of the LoRa
TM
 
Modem
4.1.3.1. Operating Mode Control
The operating modes of the LoRaTM  modem are accessed by enabling LoRaTM  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.




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