AD9915 SCLK pin

Dear all,

I am using AD9915 evaluation board. I have noticed that SCLK pin when FUNC pins are set for serial programming is high by default. When I connect DIO to the signal pin and the ground of the EVAL board and output pulse it never goes logic low. I did the same with SDIO pin which is low logic by default and it seems working. I just used tee to observe on oscilloscope what am I supplying to the signal pin.

Is there a way to make SCLK signal pin logic to be low by default? Or how do you go around this?

Thanks in advance.