LR1121
User Manual Rev 1.1
UM.LR1121.W.APP Mar 2023
39 of 130
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4.2.2 DriveDiosInSleepMode
Enables or disables the addition of pull ups or pull downs resistors on the configured RF switch and IRQ line DIOs. This
command allows to save power consumption in an application where the RF switches are supplied by the LR1121 DIOs,
when the LR1121 is in sleep mode.
• Enable value indicates which switch is used for pull-up/down (1) and which is not (0):
0: No pull-up or pull-down is configured by the FW (default).
1: A pull-up or pull-down is added by the FW on the configured RF switch and IRQ DIOS when going to sleep modes
(all sleep modes), depending on the state of the DIO in config RC mode.
On wake-up from sleep mode, the according DIOs are re-configured in push/pull mode, and pull-up/down are removed.
Note: When going to sleep mode without retention (retention=0), all pending IRQs are cleared before going to sleep mode.
Table 4-6: DriveDiosInSleepMode Command
Byte 0 1 2
Data from Host 0x01 0x2A Enable
Data to Host Stat1 Stat2 IrqStatus (31:24)
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