dds芯片ad9910无输出，是否时序问题？

Question

工程师，您好，我用fpga的max10芯片控制ad9910的cs，sclk，io_updtae,osk,profile0-2,pwr,txen,sdio引脚，可是ad9910一直输出直流信号，硬件电路板没什么问题，因为用stm32控制板中的c程序可以控制其输出，仿真出来的波形时序如下，麻烦您帮我看下时序是否有问题，谢谢！

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