Rainbow Electronics RF22 - Manual (Page 86)

RF22
Version: 0.1 Date: 12/23/2008
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Reset value = xxxxxx11
Bit Name Function
7:2 Reserved Reserved.
1:0 txpow[1:0] TX Output Power.
The output power is configurable from +20 dBm to +11 dBm in ~3 dBm steps. txpow[1:0] = 11
corresponds to +20 dBm and 00 to +11 dBm.
The data rate can be calculated as:
TX_DR = 10
3 x txdr[15:0] / 2 16 [kbps] (if address 70[5] = 0)
Or the data rate can be calculated as:
TX_DR = 10
3 x txdr[15:0] / 2 21 [kbps] (if address 70[5] = 1)
Register 6Eh. TX Data Rate 1
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name txdr[15:8]
Type R/W
Reset value = 00001010
Bit Name Function
7:0 txdr[15:8] Data Rate Upper Byte. See formula above.
Register 6Fh. TX Data Rate 0
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name txdr[7:0]
Type R/W
Reset value = 00001101
Bit Name Function
7:0 txdr[7:0] Data Rate Lower Byte.
See formula above. Defaults = 40 kbps.
Register 70h. Modulation Mode Control 1
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name Reserved txdtrtscale enphpwdn manppol enmaninv enmanch enwhite
Type R R/W R/W R/W R/W R/W R/W
Reset value = 00001100
Bit Name Function
7:6 Reserved Reserved.
5 txdtrtscale This bit should be set for Data Rates below 30 [kbps].
4 enphpwdn If set, the Packet Handler will be powered down when chip is in low power mode.
3 manppol Manchester Preamble Polarity (will transmit a series of 1 if set, or series of 0 if reset).
This bit affects ONLY the transmitter side, not the receiver. This is valid ONLY if Manchester
Mode is enabled.
2 enmaninv Manchester Data Inversion is Enabled if this bit is set.
1 enmanch Manchester Coding is Enabled if this bit is set.
0 enwhite Data Whitening is Enabled if this bit is set.
Register 71h. Modulation Mode Control 2
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name trclk[1:0] dtmod[1:0] eninv fd[8] modtyp[1:0]
Type R/W R/W R/W R/W R/W
Reset value = 00000000
Bit Name Function