Semtech LR1121 - Power down; Table 2-4: Calibrate Command; Table 2-5: Calibparams Parameter

LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
16 of 130
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2.1.3.2 Calibrate
The Calibrate(...) command calibrates the requested blocks defined by the CalibParams parameter.
Command operates in any mode. At the end of the calibration procedure, the device returns to Standby RC.
2.1.4 Power Down
This is the lowest power consumption mode of the device. In this mode:
• All clocks are stopped, therefore no RTC is available
• There is no data retention, so device reconfiguration is necessary when leaving power down mode
• The BUSY signal is set to high, indicating to the host that the device is not ready to accept a command
• The device is put in power down mode with the SetSleep(...) command (refer to sleep mode description)
The device can exit this mode if NSS activity is detected.
Exiting this mode, the device performs a firmware restart, and sets the BUSY signal to low, indicating that the startup phase
has been performed successfully and that the device is ready to accept a command.
Table 2-4: Calibrate Command
Byte 0 1 2
Data from Host 0x01 0x0F CalibParams
Data to Host Stat1 Stat2 IrqStatus(31:24)
Table 2-5: CalibParams Parameter
Bits (7:6) 5 4 3 2 1 0
Name RFU PLL_TX IMG ADC PLL HF_RC LF_RC