RFM66W Datasheet, PDF (69/87 Pages) List of Unclassifed Manufacturers – 868 & 915MHz Ultra Low Power High Link Budget Integrated UHF Transceiver

WIRELESS & SENSING
RFM66W
DATASHEET
Name
(Address)
Bits
RegRxConfig
7
(0x0d)
6
5
4
3
2
1
0
RegRssiConfig 7-3
(0x0e)
2-0
RegRssiCollision 7-0
(0x0f)
RegRssiThresh 7-0
(0x10)
RegRssiValue 7-0
(0x11)
Variable Name
RestartRxOnCollision
RestartRxWithoutPllLock
RestartRxWithPllLock
AfcAutoOn
AgcAutoOn
AgcOnPreamble
StartDemodOnPreamble
StartDemodOnRssi
RssiOffset
RssiSmoothing
RssiCollisionThreshold
RssiThreshold
RssiValue
Mode
Default
value
Description
rw 0x00 Turns on the mechanism restarting the receiver automatically
if it gets saturated or a packet collision is detected
0 → No automatic Restart
1 → Automatic restart On
wp 0x00 Triggers a manual Restart of the Receiver chain when set to 1.
Use this bit when there is no frequency change,
RestartRxWithPllLock otherwise.
wp 0x00 Triggers a manual Restart of the Receiver chain when set to 1.
Use this bit when there is a frequency change, requiring some
time for the PLL to re-lock.
rw 0x00 0 → No AFC performed at receiver startup
1 → AFC is performed at each receiver startup
rw 0x01 0 → LNA gain forced by the LnaGain Setting
1 → LNA gain is controlled by the AGC
rw 0x00 When set to 1, the AGC will adjust the LNA gain until the
preamble is detected, and fix LNA gain only when on a
Preamble is detected. The size of the qualifying preamble is
set in PreambleDetectSize.
When set to 0, the AGC will adjust the LNA gain based on
RSSI information
rw 0x00 Condition required for the circuit to provide valid data to the
baseband
rw 0x00 Condition required for the circuit to provide valid data to the
baseband
rw 0x00 Signed RSSI offset, to compensate for the possible losses/
gains in the front-end (LNA, SAW filter...)
1dB / LSB, 2‟s complement format
rw 0x02 Defines the number of samples taken to average the RSSI
result:
000 → 2 samples used
001 → 4 samples used
010 → 8 samples used
011 → 16 samples used
100 → 32 samples used
101 → 64 samples used
110 → 128 samples used
111 → 256 samples used
rw 0x0a Sets the threshold used to consider that an interferer is
detected, witnessing a packet collision. 1dB/LSB (only RSSI
increase)
Default: 10dB
rw 0xff RSSI trigger level for the Rssi interrupt :
- RssiThreshold / 2 [dBm]
rwx - Absolute value of the RSSI in dBm, 0.5dB steps.
RSSI = - RssiValue/2 [dBm]
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