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RFM69HCW Datasheet, PDF (67/79 Pages) List of Unclassifed Manufacturers – ISM TRANSCEIVER MODULE | |||
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ADVANCED COMMUNICATIONS & SENSING
RFM69HCW
DATASHEET
6.4. Receiver Registers
Table 26 Receiver Registers
Name
(Address)
Reserved14
(0x14)
Reserved15
(0x15)
Reserved16
(0x16)
Reserved17
(0x17)
RegLna
(0x18)
Bits Variable Name
7-0 -
7-0 -
7-0 -
7-0 -
7 LnaZin
6-
5-3 LnaCurrentGain
2-0 LnaGainSelect
RegRxBw
(0x19)
7-5 DccFreq
4-3 RxBwMant
2-0 RxBwExp
RegAfcBw
(0x1A)
7-5 DccFreqAfc
4-3 RxBwMantAfc
2-0 RxBwExpAfc
Mode
Default
Value
Description
r
0x40 unused
r
0xB0 unused
r
0x7B unused
r
0x9B unused
rw
1 LNAâs input impedance
* 0 â 50 ohms
1 â 200 ohms
r
0 unused
r
001 Current LNA gain, set either manually, or by the AGC
rw
000 LNA gain setting:
000 â gain set by the internal AGC loop
001 â G1 = highest gain
010 â G2 = highest gain â 6 dB
011 â G3 = highest gain â 12 dB
100 â G4 = highest gain â 24 dB
101 â G5 = highest gain â 36 dB
110 â G6 = highest gain â 48 dB
111 â reserved
rw
010 Cut-off frequency of the DC offset canceller (DCC):
*
----- -----------------
~4% of the RxBw by default
rw
10 Channel filter bandwidth control:
* 00 â RxBwMant = 16
10 â RxBwMant = 24
01 â RxBwMant = 20
11 â reserved
rw
101 Channel filter bandwidth control:
* FSK Mode:
RxBw
=
------------------------F----X----O----S----C-------------------------
RxBwMant â2RxBwExp + 2
OOK Mode:
RxBw
=
------------------------F----X----O----S----C-------------------------
RxBwMant â 2RxBwExp + 3
See Table 14 for tabulated values
rw
100 DccFreq parameter used during the AFC
rw
01 RxBwMant parameter used during the AFC
rw 011 * RxBwExp parameter used during the AFC
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