RFM23 Datasheet, PDF (139/152 Pages) –

RFM23
Register 72h. Frequency Deviation
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
fd[7:0]
Type
R/W
Reset value = 00100000
Bit
Name
7:0
fd[7:0]
Frequency Deviation Setting.
See formula above.
Function
Note: It's recommended to use modulation index of 1 or higher (maximum allowable modulation index is 32). The modulation
index is defined by 2FN/FR were FD is the deviation and RB is the data rate. When Manchester coding is enabled the
modulation index is defined by FD/RB.
Register 73h. Frequency Offset 1
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Name
fo[7:0]
Type
R/W
Reset value = 00000000
Bit
Name
7:0
fo[7:0]
Function
Frequency Offset Setting.
The frequency offset can be calculated as Offset = 156.25 Hz x (hbsel + 1) x fo[7:0].
fo[9:0] is a twos complement value. Reading from this register will give the AFC
correction last results, not this register value.
Reading from this register will give the AFC correction last results, not this register value.
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