AnsweredAssumed Answered

AD9524 No VCXO clock at all

Question asked by des00 on Apr 17, 2012
Latest reply on Apr 18, 2012 by des00

Hello!!!

 

I'm using AD9524 with fixed VCO CMOS generator. My scheme look like this http://ez.analog.com/thread/7746?tstart=1

 

All powers +1.8/3.3 V is good, VCO get good clear clock, SPI of AD9524 is worked, but when i read status register at adress 0x22C, there is "0000_0000". AD9524 don't see clock at OSC_IN port at all %(

 

Port EEPROM_SEL connected to GND, PD/SYNC/RESET is left unconnected, but use internal pullup (i checked it).

 

Is there any special features/register/etc that i must do to initialize AD9524?

 

Thanks's a lot.

Outcomes