FvM, i use it without clock stabilizer all this time.
I tried to stop clock and do not see any changes in capb/capt (still strangely pulled when mode pin is tied to gnd or 5v)
Now I am thinking to try following:
1) providing 5v clock signal
2) buying some pcb with AD9226 which works with mode pin. Then unsolder AD9226 and replace it with those i have already bought
3) buying few samples from a bigger components supplier
KlausST, yes, bit order is reversed.
Currently i only have 50MHz scope, and it seems not enough to measure clock signal.
Problem reproducible at any sampling frequencies. I tried 9MHz clock and mode pin still causes problems if tied to gnd/5v:
I am pretty sure it does not miss pulses or something like that. Although I did not do strict measurements, maybe need to learn more about using digital features of oscilloscope.
33 ohm resistor on clock pin is for tuning clock waveform, for 65mhz i used 0ohm.
Layout:
I usually use solid ground plane everywhere, and 0 ohm resistor as jumpers.