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LLCC68 Datasheet(PDF) 70 Page - Semtech Corporation

Part # LLCC68
Description  Long Range, Low Power, sub-GHz RF Transceiver
PDF  106 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

LLCC68 Datasheet(HTML) 70 Page - Semtech Corporation

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LLCC68
Data Sheet
Rev. 1.0
DS.LLCC68.W.APP
July 2019
70 of 106
Semtech
www.semtech.com
13.1.12 Calibrate Function
At power up the radio performs calibration of RC64k, RC13M, PLL and ADC. It is however possible to launch a calibration of
one or several blocks at any time starting in STDBY_RC mode. The calibrate function starts the calibration of a block defined
by calibParam.
The total calibration time if all blocks are calibrated is 3.5 ms. The calibration must be launched in STDBY_RC mode and the
BUSY pins will be high during the calibration process. A falling edge of BUSY indicates the end of the procedure.
13.1.13 CalibrateImage
The function CalibrateImage(...) allows the user to calibrate the image rejection of the device for the device operating
frequency band.
Table 13-17: Calibrate SPI Transaction
Byte
0
1
Data from host
Opcode = 0x89
calibParam
Table 13-18: Calibration Setting
CalibParam
Calibration Setting
Bit 0
0: RC64k
calibration disabled
1: R
C64k calibration enabled
Bit 1
0: RC13M
calibration disabled
1: R
C13M calibration enabled
Bit 2
0: PLL
calibration disabled
1: PLL
calibration enabled
Bit 3
0: ADC pulse
calibration disabled
1: ADC pulse
calibration enabled
Bit 4
0: ADC bulk N
calibration disabled
1: ADC bulk N
calibration enabled
Bit 5
0: ADC bulk P
calibration disabled
1: ADC bulk P
calibration enabled
Bit 6
0: Image
calibration disabled
1: Image
calibration enabled
Bit 7
0: RFU
Table 13-19: CalibrateImage SPI Transaction
Byte
0
1
2
Data from host
Opcode = 0x98
freq1
freq2



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