Datasheet

DS_1903_032 73M1903 Data Sheet
Rev. 2.1 17
Table 10: Clock Generation Register Settings for Fxtal = 24.000 MHz
Reg Address
Fs (kHz)
8h 9h Ah Bh Ch Dh*
Ichp
(μA)
Kvco
[2:0]
7.2 DA EF 30 15 1A C4 10 0
8.0 02 2C 31 13 10 C4 10 1
2.4*8/7*3
=8.22857142858
08 72 41 1C 3E C5 12 1
8.4 DA EF 41 19 10 C4 12 1
9.0 08 66 11 0A 1E C4 6 1
9.6 DA EF 42 1C 1E C4 12 2
2.4*10/7*3
=10.2857142857
DA EF 43 1E 7E C6 12 3
2.4*8/7*4
=10.9714285714
3E A9 33 14 76 C6 10 3
11.2 DA EF 53 21 1A C4 14 3
12 08 66 14 0E 14 C4 6 4
12.8 DA EF 45 26 14 C4 12 5
2.4*10/7*4
=13.7142857143
10 8C 46 20 80 C7 12 6
14.4 54 CA 46 1C 3E C5 12 6
Table 11: Clock Generation Register Settings for Fxtal = 25.35 MHz
Reg Address
FS (KHz) 8h 9h Ah Bh Ch Dh*
Ichp
(μA)
Kvco
[2:0]
7.2 92 F4 50 1A 06 C2 14 0
0
1
Xtal Oscillator
System
Clock
NCO
Kd
Up
Dn
Ichp Control
VCO Locked
2
2
Fref
Fvco
Kvco Control
Fxtal
NCO
Prescaler
VCO
Kvco
PFD
Charge
Pump
Mux
FrcVco
R1
C1
C2
Loop Filter Control
2
Figure 5: Clock Generation