SX1211
WIRELESS & SENSING
6.6. Transmitter Parameters - TXParam
The detailed description of the TXParam register is given in Table 31.
Table 31: TXParam Register Description
F xtal MHz 1 + Val ( InterpFilt Tx )
Name
InterpFilt
Bits
7-4
Address (d)
26
RW
r/w
Description
Tx Interpolation filter cut off frequency:
fc = 200 kHz . .
12 . 8 MHz 8
(d): “0111” => f C = 200 kHz
Pout
3-1
26
r/w
Tx output power (1 step ≈ 3 dB):
000
001
010
011
100
101
110
111
13 dBm
13 dBm -1 step (d)
13 dBm – 2 steps
13 dBm – 3 steps
13 dBm – 4 steps
13 dBm – 5 steps
13 dBm – 6 steps
13 dBm – 7 steps
Res
0
26
r/w
Reserved
(d): “0”
6.7. Oscillator Parameters - OSCParam
The detailed description of the OSCParam register is given in Table 32.
Table 32: OSCParam Register Description
Name
Bits
Address
RW
Description
(d)
Clkout_on
7
27
r/w
Clkout control
0
1
Disabled
Enabled, Clk frequency set by Clkout_freq (d)
Clkout_freq
6-2
27
r/w
Frequency of the signal provided on CLKOUT:
fclkout = f xtal if Clkout_freq = “00000”
fclkout =
f xtal
2 ? Clkout _ freq
otherwise
(d): 01111 (= 427 kHz)
Res
1-0
27
r/w
Reserved
(d): “00”
Rev 8 – February 2013
Page 64 of 92
www.semtech.com
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