Stm32 How to operate AD9959 to generate the simplest sine wave?

I have learned the basic operation of stm32, timer spi, iic and so on, time sequence can also be generally understood. But the stm32 will operate other chips will be confused, looking at the chip manual of AD9959 also do not know where to start. Please guide me on how to check the datasheet to operate the AD9959.