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SX1211
WIRELESS & SENSING
6. Configuration and Status Registers
6.1. General Description
Table 26 sums-up the control and status registers of the SX1211:
Table 26: Registers List
Name
MCParam
IRQParam
RXParam
SYNCParam
TXParam
OSCParam
PKTParam
Size
13 x 8
3x8
6x8
4x8
1x8
1x8
4x8
Address
0 - 12
13 - 15
16 - 21
22 – 25
26
27
28 - 31
Description
Main parameters common to transmit and receive modes
Interrupt registers
Receiver parameters
Pattern
Transmitter parameters
Crystal oscillator parameters
Packet handler parameters
6.2. Main Configuration Register - MCParam
The detailed description of the MCParam register is given in Table 27.
Table 27: MCParam Register Description
Name
Bits
Address
(d)
RW
Description
Transceiver mode:
000
sleep mode - Sleep
Chip_mode
7-5
0
r/w
001
010
stand-by mode - Stby (d)
frequency synthesizer mode - FS
011
100
receive mode - Rx
transmit mode - Tx
Frequency band:
Freq_band
4-3
0
r/w
00
01
902 – 915 MHz
915 – 928 MHz (d)
10
950 – 960 MHz or 863 - 870 MHz (Application Circuit dependant)
Fine VCO trimming:
00
Vtune determined by tank inductors values (d)
VCO_trim
2-1
0
r/w
01
Vtune + 60 mV typ.
10
11
Vtune + 120 mV typ.
Vtune + 180 mV typ.
Selection between the two sets of frequency dividers of the PLL, Ri/Pi/Si
RPS_select
0
0
r/w
0
R1/P1/S1 selected(d)
1
R2/P2/S2 selected
Modulation type:
Modul_select
7-6
1
r/w
01
OOK
10
FSK (d)
Data_mode_0
5
1
r/w
Data operation mode LSB (refer to Data_Mode_1 (Bit 2 Addr 1)
OOK demodulator threshold type:
00
fixed threshold mode
OOK_thresh_type
4-3
1
r/w
01
peak mode (d)
10
11
average mode
reserved
Rev 8 – February 2013
Page 58 of 92
www.semtech.com
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