RFM23 Datasheet, PDF (28/152 Pages) –

RFM23
3.6.7. TX Data Rate Generator
The data rate is configurable between 1–128 kbps. For data rates below 30 kbps the‖txdtrtscale‖ bit in register 70h
should be set to 1. When higher data rates are used this bit should be set to 0.
The TX date rate is determined by the following formula:
txdr [15: 0]×1MHz
DR_ TX = _{216+5×txdtrtscale}
txdr [15: 0]
=
DR_ TX×2^{16+5×txdtrtscale}
1MHz
The txdr register may be found in the following registers.
Add
6E
R/W
R/W
Function/De
scription
TX Data Rate 1
D7
txdr[15]
6F R/W TX Data Rate 0 txdr[7]
D6
txdr[14]
txdr[6]
D5
txdr[13]
txdr[5]
D4
txdr[12]
txdr[4]
D3
D2
txdr[11] txdr[10]
txdr[3] txdr[2]
D1
txdr[9]
txdr[1]
D0
txdr[8]
POR
Def.
0Ah
txdr[0] AAh
28
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