RFM92 Datasheet, PDF (96/126 Pages) List of Unclassifed Manufacturers – Low Power Long Range Transceiver Module

RFM92W/93W V3.0
Name
(Address)
RegOokFix
(0x15)
RegOokAvg
(0x16)
RegRes17
to
RegRes19
RegAfcFei
(0x1A)
RegAfcMsb
(0x1B)
RegAfcLsb
(0x1C)
RegFeiMsb
(0x1D)
RegFeiLsb
(0x1E)
Bits
Variable Name
7-0
OokFixedThreshold
7-5
OokPeakThreshDec
4
reserved
3-2
OokAverageOffset
1-0 OokAverageThreshFilt
7-0
reserved
7-5
unused
4
AgcStart
3
reserved
2
unused
1
AfcClear
0
AfcAutoClearOn
7-0
AfcValue(15:8)
7-0
AfcValue(7:0)
7-0
FeiValue(15:8)
7-0
FeiValue(7:0)
Mode
Default
value
FSK/OOK Description
Fixed threshold for the Data Slicer in OOK mode
rw 0x0C Floor threshold for the Data Slicer in OOK when Peak mode is
used
Period of decrement of the RSSI threshold in the OOK
demodulator:
rw
0x00
000 Æ once per chip
010 Æ once every 4 chips
001 Æ once every 2 chips
011 Æ once every 8 chips
100 Æ twice in each chip 101 Æ 4 times in each chip
110 Æ 8 times in each chip 111 Æ 16 times in each chip
rw 0x01 reserved
Static offset added to the threshold in average mode in order to
rw
0x00
reduce glitching activity (OOK only):
00 Æ 0.0 dB
10 Æ 4.0 dB
01 Æ 2.0 dB
11 Æ 6.0 dB
Filter coefficients in average mode of the OOK demodulator:
rw 0x02 00 Æ f_C ≈ chip rate / 32.π 01 Æ f_C ≈ chip rate / 8.π
10 Æ f_C ≈ chip rate / 4.π
11 Æf_C ≈ chip rate / 2.π
0x47
rw 0x32 reserved. Keep the Reset values.
0x3E
r
- unused
wt 0x00 Triggers an AGC sequence when set to 1.
rw 0x00 reserved
-
- unused
wc 0x00 Clear AFC register set in Rx mode. Always reads 0.
Only valid if AfcAutoOn is set
0 Æ AFC register is not cleared at the beginning of the automatic
rw 0x00 AFC phase
1 Æ AFC register is cleared at the beginning of the automatic
AFC phase
rw
0x00
MSB of the AfcValue, 2’s complement format. Can be used to
overwrite the current AFC value
rw
0x00
LSB of the AfcValue, 2’s complement format. Can be used to
overwrite the current AFC value
rw
-
MSB of the measured frequency offset, 2’s complement. Must be
read before RegFeiLsb.
rw
-
LSB of the measured frequency offset, 2’s complement
Frequency error = FeiValue x Fstep
Page 96
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