RFM64W Datasheet, PDF (62/75 Pages) List of Unclassifed Manufacturers – ISM TRANSCEIVER MODULE

ADVANCED COMMUNICATIONS & SENSING
RFM 64W
6.4. Receiver Configuration parameters - RXParam
The detailed description of the RXParam register is given in Table 29.
Table 29: RXParam Register Description
Name
PassiveFilt
Bits Address (d) RW Description
7-4 16
Typical single
PassiveFilt =
0s0id0e0b=^a>^{nd65baknHdzwidth}
of
the
passive
low-pass
filter.
0001 => 82 kHz
0010 => 109 kHz
0011 => 137 kHz
0100 => 157 kHz
0101 => 184 kHz
0110 => 211 kHz
r/w
0111 => 234 kHz
1000 => 262 kHz
1001 => 321 kHz
1010 => 378 kHz (d)
1011 => 414 kHz
1100 => 458 kHz
1101 => 514 kHz
1110 => 676 kHz
1111 => 987 kHz
ButterFilt
3-0 16
PolypFilt_center 7-4 17
Res
PolypFilt_on
Bitsync_off
Sync_on
3-0 17
7
18
6
18
5
18
Sync_size
4-3 18
Sync_tol
Res
2-1 18
0
18
Sets the receiver bandwidth. For BW information please refer to
sections 3.4.5 (FSK) and 3.4.6 (OOK).
r/w
f_c
=
f₀
+ 200kHz. ^{f xtal MHz} .1^{+Val(ButterFilt)}
12.8MHz
8
(d): “0011” => f_C = 200 kHz
Central frequency of the polyphase filter (100kHz recommended):
r/w
f₀
=
200kHz. ^{Fxtal MHz}
12.8MHz
1+ Val(PolypFilt
.
8
_
center)
(d):“0011” => f₀ = 100 kHz
r/w
Reserved
(d): “1000”
Enable of the polyphase filter, in OOK Rx mode:
r/w 0 => off (d)
1 => on
Bit synchronizer: control in Continuous Rx mode:
r/w 0 => on (d)
1 => off
Sync word recognition:
r/w 0 => off (d)
1 => on
Sync word size:
00 => 8 bits
r/w 01 => 16 bits
10 => 24 bits
11 => 32 bits (d)
Number of errors tolerated in the Sync word recognition:
00 => 0 error (d)
r/w 01 => 1 error
10 => 2 errors
11 => 3 errors
r/w
Reserved
(d):”0”
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