I got the question from our customer as following.
As for the setting way of "Resolution/ sample rate override" your AD9257,
after send it's setting of register, we put bit 1 on "transfer register"(make change 0 to 1), so "Resolution/ sample rate override" will be done, customer think. Is this correct?
But he found that the change of from 14bit to 12bit. This means that the 2 digits bit of the LVDS signal as 14bit output is fixed to 0.
So how should we drive the "transfer register"?
1st: Setting the register of "Resolution/ sample rate override"
2nd: Setting AD9257 to "power down mode"
3rd: Setting "transfer register"
Is the above way OK?
Otherwise should we set the "Resolution/ sample rate override" during "power down mode"?
I need your comment.