Hello fatihozen,
You could refer the two link for your question.
Introduction about BMA400 Auto Wakeup and Auto Low Power https://community.bosch-sensortec.com/t5/Knowledge-base/Introduction-about-BMA400-Auto-Wakeup-and-Auto-Low-Power/ta-p/8863
How to use BMA400 FIFO https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BMA400-FIFO-Low-Power-Issue/m-p/24886
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