A N 6 2 5
28
Rev. 0.1
3.2.10. IRCAL
Summary: Calibrate receiver image rejection for Si4463 and Si4464.
Purpose:
Automatically calibrates the receiver image rejection with no requirement for an external signal source.
Command Stream
Reply Stream
Parameter:
INITIAL_PH_AMP - Initial ph and amp value when start IR calibration.
0 = use zero for phase and amplitude values as starting values
1 = use previous calibration values as starting values (default)
FINE_STEP_SIZE[5:4] - Step size of fine stepping. Range:0~13.
0 = Value 0 is used to skip fine stepping.
COURSE_STEP_SIZE[3:0] - Course Step Size of course stepping. Range:0~15.
0 = Value 0 is usedn to skip course stepping
RSSI_FINE_AVG[5:4] - How many measurements(2^avg) per RSSI measurement while fine stepping.
0 = 1 measurements
1 = 2 measurements
2 = 4 measurements
3 = 8 measurements
RSSI_COURSE_AVG[1:0] - How many measurements(2^avg) per RSSI measurement while course stepping.
0 = 1 measurements
1 = 2 measurements
2 = 4 measurements
3 = 8 measurements
EN_HRMNIC_GEN - Enable harmonic generator.
0 = Not enable
1 = Enable
IRCLKDIV - Set irclkdiv
IRCAL
Command
7
6
5
4
3
2
1
0
CMD
0x17
SEARCHING_
STEP_SIZE
0 INITIAL_
PH_AMP
FINE_STEP_
SIZE[1:0]
COURSE_STEP_SIZE[3:0]
SEARCHING_
RSSI_AVG
00 RSSI_FINE_
AVG[1:0]
00 RSSI_COURSE_
AVG[1:0]
RX_CHAIN_
SETTING1
EN_HRMNIC_
GEN
IRCLKDIV RF_SOURCE_
PWR[1:0]
CLOSE_
SHUNT_
SWITCH
PGA_GAIN[2:0]
RX_CHAIN_
SETTING2
0000000 ADC_
HIGH_
GAIN
IRCAL Reply
7
6
5
4
3
2
1
0
CMD_COMPLETE
CTS[7:0]
Summary of Contents for Si446 Series
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