RFM66W Datasheet, PDF (73/87 Pages) List of Unclassifed Manufacturers – 868 & 915MHz Ultra Low Power High Link Budget Integrated UHF Transceiver

WIRELESS & SENSING
RFM66W
DATASHEET
Name
(Address)
Bits
RegSyncValue4 7-0
(0x2b)
RegSyncValue5 7-0
(0x2c)
RegSyncValue6 7-0
(0x2d)
RegSyncValue7 7-0
(0x2e)
RegSyncValue8 7-0
(0x2f)
RegPacketConfig1 7
(0x30)
6-5
4
3
2-1
0
Variable Name
SyncValue(39:32)
SyncValue(31:24)
SyncValue(23:16)
SyncValue(15:8)
SyncValue(7:0)
PacketFormat
DcFree
CrcOn
CrcAutoClearOff
AddressFiltering
CrcWhiteningType
Mode
Default
value
Description
rw 0x55 ₄th _{byte of Sync word.}
Used if SyncOn is set and (SyncSize +1) >= 4.
rw 0x55 ₅th _{byte of Sync word.}
Used if SyncOn is set and (SyncSize +1) >= 5.
rw 0x55 ₆th _{byte of Sync word.}
Used if SyncOn is set and (SyncSize +1) >= 6.
rw 0x55 ₇th _{byte of Sync word.}
Used if SyncOn is set and (SyncSize +1) >= 7.
rw 0x55 ₈th _{byte of Sync word.}
Used if SyncOn is set and (SyncSize +1) = 8.
rw 0x01 Defines the packet format used:
0 → Fixed length
1 → Variable length
rw 0x00 _{Defines DC-free encoding/decoding performed:}
00 → None (Off)
01 → Manchester
10 → Whitening
11 → reserved
rw 0x01 _{Enables CRC calculation/check (Tx/Rx):}
0 → Off
1 → On
rw 0x00 Defines the behavior of the packet handler when CRC check
fails:
0 → Clear FIFO and restart new packet reception. No
PayloadReady interrupt issued.
1 → Do not clear FIFO. PayloadReady interrupt issued.
rw 0x00 Defines address based filtering in Rx:
00 → None (Off)
01 → Address field must match NodeAddress
10 → Address field must match NodeAddress or
BroadcastAddress
11 → reserved
rw 0x00 Selects the CRC and whitening algorithms:
0 → CCITT CRC implementation with standard whitening
1 → IBM CRC implementation with alternate whitening
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