Operation Guide

OG_LMD-401_v10e Circuit Design, Inc. 15
OPERATION GUIDE
PLL FREQUENCY SETTING DATA REFERENCE
Example : Setting from 458.000 MHz to 458.6125 MHz
Channel
Frequency
F
CH
Expect
Frequency
Ｆ
EXPECT
Lock
Frequency
F
VCO
Number of
Division n
Programable
Counter
P
Swallow Counter
S
(MHz) (MHz) (MHz)
458.0000 436.3000 436.3000 34904 545 24
458.0125 436.3125 436.3125 34905
545
25
458.0250 436.3250 436.3250 34906
545
26
458.0375 436.3375 436.3375 34907
545
27
458.0500 436.3500 436.3500 34908
545
28
458.0625 436.3625 436.3625 34909
545
29
458.0750 436.3750 436.3750 34910
545
30
458.0875 436.3875 436.3875 34911
545
31
458.1000 436.4000 436.4000 34912
545
32
458.1125 436.4125 436.4125 34913
545
33
458.1250 436.4250 436.4250 34914
545
34
458.1375 436.4375 436.4375 34915
545
35
458.1500 436.4500 436.4500 34916
545
36
458.1625 436.4625 436.4625 34917
545
37
458.1750 436.4750 436.4750 34918
545
38
458.1875 436.4875 436.4875 34919
545
39
458.2000 436.5000 436.5000 34920
545
40
458.2125 436.5125 436.5125 34921
545
41
458.2250 436.5250 436.5250 34922
545
42
458.2375 436.5375 436.5375 34923
545
43
458.2500 436.5500 436.5500 34924
545
44
458.2625 436.5625 436.5625 34925
545
45
458.2750 436.5750 436.5750 34926
545
46
458.2875 436.5875 436.5875 34927
545
47
458.3000 436.6000 436.6000 34928
545
48
458.3125 436.6125 436.6125 34929
545
49
458.3250 436.6250 436.6250 34930
545
50
458.3375 436.6375 436.6375 34931
545
51
458.3500 436.6500 436.6500 34932
545
52
Parameter name Value
Phase Comparing Frequency F
COMP
[kHz] 12.5
Start Channel Frequency F
CH
[MHz] 458.000
Channel Step Frequency [kHz] 12.5
Number of Channel 50
Prescaler M 64
Parameter name Value
Reference Frequency F
REF
[MHz] 21.25
Offset Frequency F
OFFSET
[MHz] 21.7
: For data input
: Result of calculation
: Fixed value
Parameter name Value
Reference Counter R 1700
Programmable Counter P Min. Value 545
Programmable Counter P Max. Value 546
Swallow Counter S Min. Value 0
Swallow Counter S Max. Value 63