A problem with a status word - ADF7023

Hey, I use in the ADF7023MB3Z - the evaluation kit of the ADF7023 and in these days I try to write a code which transsmit a GMSK modulated signal.

I wrote a code following the data sheet:

I have a problem. something doesn't work, the component didn't transsmit nothing.

I debugged the code and I discovered that when I polled status word, the ADF7023 return me 0xAA - i.e the CND_READY is high but the FW_STATE is CMD_AES_ENCRYPT - and it doesn't even attached to my code.

I realy need help, maybe can you send me an example for initialization code? or to direct my attention for some important points.

Thanks so much.