AnsweredAssumed Answered

AD9951 Programming problem

Question asked by Alex_777 on Sep 2, 2015
Latest reply on Sep 4, 2015 by Alex_777

Hello.

I tried to read and write registers, but had no success.

Then I am find the next information: After reset on SYNC_CLK pin, we must have some pulses. [CFR1<1> = 0 (default). The SYNC_CLK pin is active.] But I don't have any pulses on this pin.

 

Supply voltage is OK. Schematic is correct. On OSC/REFCLK pin -> 31.2 MHz / 600mV peak to peak.

This is my schematic:

1.png

 

I will be glad for the help.

Thanks.

Outcomes