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RFM95 Datasheet(PDF) 91 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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 91 page
background image
Page 91
RFM95/96/97/98(W)
Tel: + 86-755-82973805
Fax: + 86-755-82973550
E-mail: sales@hoperf.com http:/ / www.hoperf.com
WIRELESS & SENSING
PRELIMINARY
DATASHEET
Name
(Address)
Bits
Variable Name
Mode
Default
value
FSK/OOK Description
7-5
reserved
rw
0x00
reserved
4-3
RxBwMantAfc
rw
0x01
RxBwMant parameter used during the AFC
RegAfcBw
(0x13)
2-0
RxBwExpAfc
rw
0x03
RxBwExp parameter used during the AFC
7-6
reserved
rw
0x00
reserved
5
BitSyncOn
rw
0x01
Enables the Bit Synchronizer.
0
Bit Sync disabled (not possible in Packet mode)
1
Bit Sync enabled
4-3
OokThreshType
rw
0x01
Selects the type of threshold in the OOK data slicer:
00
fixed threshold
10
average mode
01
peak mode (default)
11
reserved
RegOokPeak
(0x14)
2-0
OokPeakTheshStep
rw
0x00
Size of each decrement of the RSSI threshold in the OOK
demodulator:
000
0.5 dB
001
1.0 dB
010
1.5 dB
011
2.0 dB
100
3.0 dB
101
4.0 dB
110
5.0 dB
111
6.0 dB
RegOokFix
(0x15)
7-0
OokFixedThreshold
rw
0x0C
Fixed threshold for the Data Slicer in OOK mode
Floor threshold for the Data Slicer in OOK when Peak mode is
used
7-5
OokPeakThreshDec
rw
0x00
Period of decrement of the RSSI threshold in the OOK
demodulator:
000
once per chip
001
once every 2 chips
010
once every 4 chips
011
once every 8 chips
100
twice in each chip
101
4 times in each chip
110
8 times in each chip
111
16 times in each chip
4
reserved
rw
0x01
reserved
3-2
OokAverageOffset
rw
0x00
Static offset added to the threshold in average mode in order to
reduce glitching activity (OOK only):
00
0.0 dB
10
4.0 dB
01
2.0 dB
11
6.0 dB
RegOokAvg
(0x16)
1-0
OokAverageThreshFilt
rw
0x02
Filter coefficients in average mode of the OOK demodulator:
00
fC ≈ chip rate / 32.π
01
fC ≈ chip rate / 8.π
10
fC ≈ chip rate / 4.π
11
fC ≈ chip rate / 2.π
RegRes17
to
RegRes19
7-0
reserved
rw
0x47
0x32
0x3E
reserved. Keep the Reset values.




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