I am sorry casually I closed a subject "Receive data from ADF4158".
In a mode "readback" there are no data at the exit Muxout. Mode "Serial data out" and etc. complete correctly.
For readback mode, I write register R0..R7 data:
R0=0x78320000, R1=0x00000001, R2=0x00408002, R3=0x00004003, R4=0x00400004 ,
R5=0x0C000005, R6=0x00000006, R7=0x00000007.
Send me please the Read data Timing diagram (real) with signal CLK vs. TXdata and LE, because I am not confident in correctness of my "Read time" diagram.