AK1590 Datasheet, PDF (18/36 Pages) Asahi Kasei Microsystems – 1GHz Delta-Sigma Fractional-N Frequency Synthesizer

Unlocked ([LD]=”Low”)
Flag = 0
Phase Error < T
No
Yes
Flag = Flag+1
No
Flag > 63
Yes
Locked ([LD]=”High”)
Fig. 9 Transition Flow Chart: Unlocked State to Locked State
Locked ([LD]=”High”)
Flag = 0
Address2 write
Phase Error > T
No
Yes
Flag = Flag+1
No
Flag > 63
Yes
Unlocked ([LD]=”Low”)
Fig. 10 Transition Flow Chart: Locked State to Unlocked State
[AK1590]
MS1478-E-01
18
2013/2