SX1231
ADVANCED COMMUNICATIONS & SENSING
DATASHEET
Default
Reset
Address
Register Name
(recom
Description
(built-in)
mended)
0x19
0x1A
RegRxBw
RegAfcBw
0x86
0x8A
0x55
0x8B
Channel Filter BW Control
Channel Filter BW control during the AFC routine
0x1B
0x1C
0x1D
0x1E
0x1F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
RegOokPeak
RegOokAvg
RegOokFix
0x40
OOK demodulator selection and control in peak mode
Average threshold control of the OOK demodulator
Fixed threshold control of the OOK demodulator
AFC and FEI control and status
0x80
0x06
0x10
0x00
0x00
0x00
0x00
0x02
0xFF
0x00
RegAfcFei
RegAfcMsb
MSB of the frequency correction of the AFC
LSB of the frequency correction of the AFC
MSB of the calculated frequency error
LSB of the calculated frequency error
RSSI-related settings
RegAfcLsb
RegFeiMsb
RegFeiLsb
RegRssiConfig
RegRssiValue
RegDioMapping1
RegDioMapping2
RSSI value in dBm
Mapping of pins DIO0 to DIO3
0x05
0xFF
0x07
0xE4
Mapping of pins DIO4 and DIO5, ClkOut frequency
0x27
0x28
0x29
RegIrqFlags1
RegIrqFlags2
RegRssiThresh
0x80
0x00
Status register: PLL Lock state, Timeout, RSSI > Threshold...
Status register: FIFO handling flags, Low Battery detection...
RSSI Threshold control
0x2A
0x2B
RegRxTimeout1
RegRxTimeout2
RegPreambleMsb
RegPreambleLsb
RegSyncConfig
RegSyncValue1-8
0x00
0x00
0x00
0x03
0x98
Timeout duration between Rx request and RSSI detection
Timeout duration between RSSI detection and PayloadReady
Preamble length, MSB
0x2C
0x2D
Preamble length, LSB
0x2E
Sync Word Recognition control
0x2F-0x36
0x00
0x01
Sync Word bytes, 1 through 8
0x37
0x38
0x39
0x3A
0x3B
0x3C
RegPacketConfig1
RegPayloadLength
RegNodeAdrs
0x10
0x40
0x00
0x00
0x00
Packet mode settings
Payload length setting
Node address
RegBroadcastAdrs
RegAutoModes
RegFifoThresh
Broadcast address
Auto modes settings
0x0F
0x8F
Fifo threshold, Tx start condition
Rev 2 - Nov 2009
Page 58
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