i have a problem for detecting my VCXO, REFA and REFB inputs to AD9523-1 !
i have designed my schematics like ad9523-1 EVAL board and now i am writing and reading registers via I2C interface correctly.
VCXO range :single ended 10 to 40 MHZ.
REFA and REFB :single ended 50 MHZ oscillator.( also FPGA Pin can be connected to REFA and REFB )
I have written my VHDL program according to initialization guide in datasheet. when i read 0X"22C" register (readback register) i get 0X"00" data which means that all may clocking input are missing. I dont know why is that happening. any setting needed for detecting my inputs?
thank you for your advices.