I have the AD9910 DDS connected with a 40Mhz crystal.
And XTAL_select is tied to GND.
So when I powerering the DDS, and then giving a MASTER_RESET
then I must see at REFCLK_OUT my 40MhZ signal. Also I must
see at SYNC_CLK (pin 55) a signal of 5Mhz. Because my SYSCLK
is 20Mhz. Am I right?
But now, I don't have both REFCLK_OUT and SYNC_CLK signal.
Is there something wrong with this setup? Or is the DDS just dead?