Power Down; Table 2-4: Calibrate Command; Table 2-5: Calibparams Parameter - Semtech LR1121 User Manual

2.1.3.2 Calibrate
The Calibrate(...) command calibrates the requested blocks defined by the CalibParams parameter.

Table 2-4: Calibrate Command

Byte
Data from Host
Data to Host

Table 2-5: CalibParams Parameter

Bits (7:6)
Name RFU
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.
LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
0
0x01
Stat1
5 4
PLL_TX IMG
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1
0x0F
Stat2
3 2
ADC PLL
2
CalibParams
IrqStatus(31:24)
1 0
HF_RC LF_RC
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