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SX1276 View Datasheet(PDF) - Semtech Corporation

Part Name
Description
MFG CO.
'SX1276' PDF : 132 Pages View PDF
WIRELESS, SENSING & TIMING
SX1276/77/78/79
DATASHEET
Name
(Address)
Bits
Variable Name
RegModemConfig 7-4
3
(0x26)
3
Unused
LowDataRateOptimize
(0x27)
RegFeiMsb
(0x28)
2
AgcAutoOn
1-0 Reserved
7-0 PpmCorrection
7-4 Reserved
3-0 FreqError(19:16)
RegFeiMid
(0x29)
7-0 FreqError(15:8)
Mode Reset
LoRaTM Description
r
0x00
rw 0x00 0 Disabled
1 Enabled; mandated for when the symbol length exceeds
16ms
rw 0x00 0 LNA gain set by register LnaGain
1 LNA gain set by the internal AGC loop
rw 0x00 Reserved
rw 0x00 Data rate offset value, used in conjunction with AFC
r
n/a Reserved
Estimated frequency error from modem
MSB of RF Frequency Error
r
0x0
FError = F-----r--e---q----E--F--r--xr--t-o-a--rl----×-----2---2---4 × B-----W---5--[-0-k--0-H-----z---]
r
0x0 Middle byte of RF Frequency Error
RegFeiLsb
(0x2A)
7-0 FreqError(7:0)
r
0x0 LSB of RF Frequency Error
(0x2B)
-
RegRssiWideband
(0x2C)
7-0
(0x2D) - (0x30)
-
7-3
RegDetectOptimiz
e
(0x31)
2-0
Reserved
RssiWideband(7:0)
Reserved
Reserved
DetectionOptimize
(0x32)
RegInvertIQ
(0x33)
-
Reserved
7
Reserved
6
InvertIQ
5-0
(0x34) - (0x36)
7-0
RegDetectionThre
shold
7-0
(0x37)
(0x38)
-
RegSyncWord
(0x39)
7-0
Reserved
Reserved
DetectionThreshold
Reserved
SyncWord
r
n/a Reserved
r
n/a
Wideband RSSI measurement used to locally generate a
random number
r
n/a Reserved
r
0xC0 Reserved
LoRa Detection Optimize
rw 0x03 0x03 SF7 to SF12
0x05 SF6
r
n/a Reserved
rw 0x0 Reserved
Invert the LoRa I and Q signals
rw 0x0 0 normal mode
1 I and Q signals are inverted
rw 0x27 Reserved
r
n/a Reserved
LoRa detection threshold
rw 0x0A 0x0A SF7 to SF12
0x0C SF6
r
n/a Reserved
rw
0x12
LoRa Sync Word
Value 0x34 is reserved for LoRaWAN networks
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 114
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