RFM92 Datasheet, PDF (95/126 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

RFM92W/93W V3.0
Name
(Address)
Bits
7-3
RegRssiConfig
(0x0E)
2-0
RegRssiCollision
(0x0F)
7-0
RegRssiThresh
(0x10)
7-0
RegRssiValue
(0x11)
7-0
7
6-5
4-3
RegRxBw
(0x12)
2-0
RegAfcBw
7-5
(0x13)
4-3
2-0
7-6
5
RegOokPeak
4-3
(0x14)
2-0
Variable Name
RssiOffset
RssiSmoothing
RssiCollisionThreshold
RssiThreshold
RssiValue
unused
reserved
RxBwMant
RxBwExp
reserved
RxBwMantAfc
RxBwExpAfc
reserved
BitSyncOn
OokThreshType
OokPeakTheshStep
Mode
Default
value
FSK/OOK Description
Signed RSSI offset, to compensate for the possible losses/gains
rw 0x00 in the front-end (LNA, SAW filter...)
1dB / LSB, 2’s complement format
Defines the number of samples taken to average the RSSI result:
000 Æ 2 samples used
001 Æ 4 samples used
010 Æ 8 samples used
rw 0x02 011 Æ 16 samples used
100 Æ 32 samples used
101 Æ 64 samples used
110 Æ 128 samples used
111 Æ 256 samples used
Sets the threshold used to consider that an interferer is detected,
rw 0x0A witnessing a packet collision. 1dB/LSB (only RSSI increase)
Default: 10dB
rw
0xFF
RSSI trigger level for the Rssi interrupt:
- RssiThreshold / 2 [dBm]
r
-
Absolute value of the RSSI in dBm, 0.5dB steps.
RSSI = - RssiValue/2 [dBm]
r
- unused
rw 0x00 reserved
Channel filter bandwidth control:
rw 0x02 00 Æ RxBwMant = 16
10 Æ RxBwMant = 24
01 Æ RxBwMant = 20
11 Æ reserved
Channel filter bandwidth control:
FSK Mode:
rw 0x05
RxB w
=
------------------------^F----^X----^O----^S----^C-------------------------
RxBwMant × 2^{RxBwExp + 2}
rw 0x00 reserved
rw 0x01 RxBwMant parameter used during the AFC
rw 0x03 RxBwExp parameter used during the AFC
rw 0x00 reserved
Enables the Bit Synchronizer.
rw 0x01 0 Æ Bit Sync disabled (not possible in Packet mode)
1 Æ Bit Sync enabled
Selects the type of threshold in the OOK data slicer:
rw 0x01 00 Æ fixed threshold
10 Æ average mode
01 Æ peak mode (default) 11 Æ reserved
Size of each decrement of the RSSI threshold in the OOK
demodulator:
rw
0x00
000 Æ 0.5 dB
010 Æ 1.5 dB
001 Æ 1.0 dB
011 Æ 2.0 dB
100 Æ 3.0 dB
101 Æ 4.0 dB
110 Æ 5.0 dB
111 Æ 6.0 dB
Page 95
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