AD2S1210 configuration

Hi all,

Now,I configurate AD2S1210,10bit resolution.found a problem as below:

After I write 0x92 register,interval 50uS,I can read this register the first time,But I want to read this register again without other action,I found that read data is error,the data is "0",the real write data is 0x7c.

Attached is write data time series and read data time series.Blue is "WR/SYNC",yellow is "CLK",green is "SDI",pink is "SDI"

Would you give some comments how to do this problem?

many thanks!
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