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
7-6
5
RegOcp
(0x0B)
4-0
7-5
RegLna
(0x0C)
4-3
2
1-0
Variable Name
unused
OcpOn
OcpTrim
LnaGain
LnaBoostLf
reserved
LnaBoostHf
Mode
Default
value
FSK/OOK Description
r 0x00 unused
Enables overload current protection (OCP) for the PA:
rw 0x01 0 OCP disabled
1 OCP enabled
Trimming of OCP current:
Imax = 45+5*OcpTrim [mA] if OcpTrim <= 15 (120 mA) /
rw
0x0b
Imax = -30+10*OcpTrim [mA] if 15 < OcpTrim <= 27 (130 to 240
mA)
Imax = 240mA for higher settings
Default Imax = 100mA
Registers for the Receiver
LNA gain setting:
000 reserved
001 G1 = highest gain
010 G2 = highest gain – 6 dB
011 G3 = highest gain – 12 dB
100 G4 = highest gain – 24 dB
rw 0x01 101 G5 = highest gain – 36 dB
110 G6 = highest gain – 48 dB
111 reserved
Note:
Reading this address always returns the current LNA gain (which
may be different from what had been previously selected if AGC
is enabled.
Low Frequency (RFI_LF) LNA current adjustment
rw 0x00 00 Default LNA current
Other Reserved
rw 0x00 reserved
High Frequency (RFI_HF) LNA current adjustment
rw 0x00 00 Default LNA current
11 Boost on, 150% LNA current
Rev. 4 - March 2015
©2015 Semtech Corporation
Page 95
www.semtech.com
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