RFM31 Datasheet, PDF (87/137 Pages) –

RFM31
Register 21h. Clock Recovery Offset 2
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
rxosr[10:8]
stallctrl
ncoff[19:16]
Type
R/W
R/W
R/W
Reset value = 00000001
Bit
Name
Oversampling Rate.
7:5
rxosr[10:8]
Upper bits.
4
stallctrl
Used for BCR Purposes.
NCO Offset.
3:0
ncoff[19:16]
See formula above.
The offset can be calculated as follows:
Function
Rb×（1+enmanch）×2^20+ndec_exp
ncoff = _{500×(1+2×dwn3_bypass)}
The default values for register 20h to 23h gives 40 kbps RX_DR with Manchester coding is disenabled.
Register 22h. Clock Recovery Offset 1
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
ncoff[15:8]
Type
R/W
Reset value =01000111
Bit
Name
7:5
ncoff[15:8]
NCO Offset.
See formula above
Function
87
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