[AK1572]
< Address0x02:Freq2 >
D [18: 16]
CP1[2:0] ： Set the charge pump current for normal status
D [14:12]
CP2[2:0] ： Set the charge pump current for fast lock
CP1 is the charge pump current setting of the normal mode.
CP2 is the charge pump current setting of the fast lock mode
Charge pump current is determined by the following formula.
Charge pump current [A] = Icp_min [A] × (CP1 or CP2 setting value+1)
Icp_min [A] = 8.1 / R [ohm]
R: the resistance value which is connected to [CPBIAS] pin
Charge pump current (typ) unit : μA
CP1[2:0]
CP2[2:0]
R
33kΩ
245
27kΩ
300
22kΩ
368
0
1
2
3
4
5
6
7
491
600
736
736
900
1105
1473
1841
2209
2577
2945
982
1200
1500
1800
2100
2400
1227
1473
1718
1964
D [11:0]
FRAC[11:0]：Fractional Numerator determination
Set the Numerator of Fractional divider.
The allowed range is from 0 to (MOD[11:0] -1).
MS1551-E-00
16
2013/8
AKM [ ASAHI KASEI MICROSYSTEMS ]
