I am want to do wake up on motion when any threshold value generated by icm 20948 accelerometer I want to send an interrupt from icm 20948 to nrf52832 to wake up from sleep mode.
if you know then please help me.
You would need to configure a gpio pin with a sense event which would wake the nrf from sleep. Then connect this pin to the Wake on Motion interrupt pin of the ICM 20948. See this thread for example