Data Sheet

Page 84
RFM95/96/97/98(W)
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WIRELESS & SENSING PRELIMINARY DATASHEET
6. Description of the Registers
The register mapping depends upon whether FSK/OOK or LoRa
TM
mode has been selected. The following table
summarises the location and function of each register and gives an overview of the changes in register mapping between
both modes of operation.
6.1. Register Table Summary
Table 85 Registers Summary
Register Name Description
Address
FSK/OOK Mode
LoRa
TM
Mode
Reset
(POR)
Default
(FSK)
FSK Mode
LoRa
TM
Mode
0x00 RegFifo
0x00
FIFO read/write access
0x01 RegOpMode 0x01
Operating mode & LoRa
TM
/ FSK selection
0x02 RegBitrateMsb 0x1A Bit Rate setting, Most Significant Bits
0x03 RegBitrateLsb 0x0B Bit Rate setting, Least Significant Bits
0x04 RegFdevMsb 0x00 Frequency Deviation setting, Most Significant Bits
0x05 RegFdevLsb
Unused
0x52 Frequency Deviation setting, Least Significant Bits
0x06 RegFrfMsb 0xE4 RF Carrier Frequency, Most Significant Bits
0x07 RegFrfMid 0xC0 RF Carrier Frequency, Intermediate Bits
0x08 RegFrfLsb 0x00 RF Carrier Frequency, Least Significant Bits
0x09 RegPaConfig 0x0F PA selection and Output Power control
0x0A RegPaRamp 0x19 Control of PA ramp time, low phase noise PLL
0x0B RegOcp 0x2B Over Current Protection control
0x0C RegLna 0x20 LNA settings
0x0D RegRxConfig RegFifoAddrPtr 0x08 0x0E AFC, AGC, ctrl FIFO SPI pointer
0x0E RegRssiConfig
RegFifoTxBa-
seAddr
0x02 RSSI Start Tx data
0x0F RegRssiCollision
RegFifoRxBa-
seAddr
0x0A RSSI Collision detector Start Rx data
0x10 RegRssiThresh RegIrqFlags 0xFF RSSI Threshold control
LoRa
TM
state flags
0x11 RegRssiValue RegIrqFlagsMask - RSSI value in dBm Optional flag mask
0x12 RegRxBw RegFreqIfMsb 0x15 Channel Filter BW Control
0x13 RegAfcBw RegFreqIFLsb 0x0B AFC Channel Filter BW
IF Frequency
0x14 RegOokPeak
RegSymbTime-
outMsb
0x28 OOK demodulator
0x15 RegOokFix
RegSymbTime-
outLsb
0x0C Threshold of the OOK demod
Receiver timeout value
0x16 RegOokAvg RegTxCfg 0x12 Average of the OOK demod
0x17 Reserved17
RegPay-
loadLength
0x47 -
LoRa
TM
transmit
parameters
0x18 Reserved18 RegPreambleMsb 0x32 -
0x19 Reserved19 RegPreambleLsb 0x3E -
Size of preamble
0x1A RegAfcFei
RegModulation-
Cfg
0x00 AFC and FEI control Modem PHY config
0x1B RegAfcMsb RegRfMode 0x00 Test register
0x1C RegAfcLsb RegHopPeriod 0x00
Frequency correction value of
the AFC
FHSS Hop period