RFM22
Register 6Dh. TX Power
Bit
D7
D6
D5
D4
D3
D2
D1
D0
Reserved
txpow[2]
txpow[1:0]
Name
Type
R
R/W
R/W
Reset value = xxxx1000
Bit
Name
Function
7:4
Reserved
Reserved.
TX Output Power.
txpow[2]
3
This bit is used in 4x31 output power programming.
TX Output Power.
txpow[1:0]
2:0
The output power is configurable from +17 dBm to +8 dBm in ~3 dBm steps.
txpow[1:0] = 11 corresponds to +17 dBm and 00 to +8 dBm.
Register 6Eh. TX Data Rate 1
Bit
D7
D6
D5
D4
D3
D2
D1
D0
txdr[15:8]
R/W
Name
Type
Reset value = 00001010
Bit
Name
Function
Data Rate Upper Byte.
txdr[15:8]
7:0
See formula above.
3
16
The data rate can be calculated as: TX_DR = 10 x txdr[15:0] / 2
[kbps] (if address 70[5] = 0) or
3
21
The data rate can be calculated as: TX_DR = 10 x txdr[15:0] / 2
[kbps] (if address 70[5] = 1)
133
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