AK1541_17 Datasheet, PDF (17/37 Pages) Asahi Kasei Microsystems – 20 to 600Mhz Delta-Sigma Fractional-N Frequency Synthesizer

Unlock([LD]=”Low”)
Flag=0
No
Phase Error < T
Yes
Flag=Flag+1
No
Flag>63
Yes
Lock([LD]=”High”)
Fig. 9 Transition Flow Chart: Unlock State to Lock State
Lock([LD]=”High”)
Address2 write
Flag=0
No
Phase Error > T
Yes
Flag=Flag+1
No
Flag>63
Yes
Unlock([LD]=”Low”)
Fig. 10 Transition Flow Chart: Lock State to Unlock State
[AK1541]
MS1043-E-05
17
2013/03