RFM66W Datasheet, PDF (72/87 Pages) List of Unclassifed Manufacturers – 868 & 915MHz Ultra Low Power High Link Budget Integrated UHF Transceiver

WIRELESS & SENSING
RFM66W
DATASHEET
Name
(Address)
Bits
RegRxDelay 7-0
(0x23)
RegOsc
7-4
(0x24)
3
2-0
RegPreambleMsb 7-0
(0x25)
RegPreambleLsb 7-0
(0x26)
RegSyncConfig 7-6
(0x27)
5
4
3
2-0
RegSyncValue1 7-0
(0x28)
RegSyncValue2 7-0
(0x29)
RegSyncValue3 7-0
(0x2a)
Variable Name
Mode
Default
value
Description
InterPacketRxDelay
rw 0x00 Additional delay befopre an automatic receiver restart is
launched:
Delay = InterPacketRxDelay*4*Tbit
RC Oscillator registers
unused
r
- unused
RcCalStart
rwp 0x00 Triggers the calibration of the RC oscillator when set. Always
reads 0. RC calibration must be triggered in Standby mode.
ClkOut
rw 0x05 _{Selects CLKOUT frequency:}
000 → FXOSC
001 → FXOSC / 2
010 → FXOSC / 4
011 → FXOSC / 8
100 → FXOSC / 16
101 → FXOSC / 32
110 → RC (automatically enabled)
111 → OFF
Packet Handling registers
PreambleSize(15:8)
rw 0x00 Size of the preamble to be sent (from TxStartCondition
fulfilled). (MSB byte)
PreambleSize(7:0)
rw 0x03 Size of the preamble to be sent (from TxStartCondition
fulfilled). (LSB byte)
AutoRestartRxMode
rw 0x02 Controls the automatic restart of the receiver after the
reception of a valid packet (PayloadReady or CrcOk):
00 → Off
01 → On, without waiting for the PLL to re-lock
10 → On, wait for the PLL to lock (frequency changed)
11 → reserved
PreamblePolarity
SyncOn
rw 0x00 _{Sets the polarity of the Preamble}
0 → 0xAA (default)
1 → 0x55
rw 0x01 Enables the Sync word generation and detection:
0 → Off
1 → On
FifoFillCondition
rw 0x00 FIFO filling condition:
0 → if SyncAddress interrupt occurs
1 → as long as FifoFillCondition is set
SyncSize
rw 0x03 Size of the Sync word:
(SyncSize + 1) bytes, (SyncSize) bytes if ioHomeOn=1
SyncValue(63:56)
rw 0x55 ₁st _{byte of Sync word. (MSB byte)}
Used if SyncOn is set.
SyncValue(55:48)
rw 0x55 ₂nd _{byte of Sync word}
Used if SyncOn is set and (SyncSize +1) >= 2.
SyncValue(47:40)
rw 0x55 ₃rd _{byte of Sync word.}
Used if SyncOn is set and (SyncSize +1) >= 3.
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