1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
#!/usr/bin/perl
# Rx Mode and Tx Mode:
# N = Nint + (Nfrac / 130) = (0.5*Fvco) / 26M
# where 0 <= Nfrac < 130
# where 0 <= Ninit <= 127 (as Nint is 7 bit)
# where Fvco = 4 * Fch (GSM 850/900), Fvco = 2 * Fch (GSM 1800/1900)
# (Nint + (Nfrac / 130)) * 52 MHz = Fvco
sub mtk_fvco($$) {
my ($nint, $nfrac) = @_;
return ($nint + ($nfrac / 130)) * (26 * 2)
}
sub hr() {
printf("======================================================================\n");
}
sub vco_print($$$)
{
my ($nint, $nfrac, $hiband) = @_;
my $fvco = mtk_fvco($nint, $nfrac);
my $mult;
if ($hiband == 1) {
$mult = 2;
} else {
$mult = 4;
}
printf("Fch=%4.2f (Fvco=%4.2f, Nint=%03u, Nfrac=%03u)\n",
$fvco/$mult, $fvco, $nint, $nfrac);
}
#for (my $nint = 0; $nint <= 127; $nint++) {
# for (my $nfrac = 0; $nfrac <= 130; $nfrac++) {
# vco_print($nint, $nfrac);
# }
#}
printf("PLL Rx Low Band:\n");
for (my $nint = 68; $nint <= 73; $nint++) {
#for GSM 810
#for (my $b = 132; $b <= 150; $b++) {
for (my $nfrac = 0; $nfrac <= 130; $nfrac++) {
vco_print($nint, $nfrac, 0);
}
}
hr();
printf("PLL Rx High Band:\n");
for (my $nint = 69; $nint <= 79; $nint++) {
for (my $nfrac = 0; $nfrac <= 130; $nfrac++) {
vco_print($nint, $nfrac, 1);
}
}
hr();
printf("PLL Tx Low Band:\n");
for (my $nint = 63; $nint <= 70; $nint++) {
for (my $nfrac = 0; $nfrac <= 130; $nfrac++) {
vco_print($nint, $nfrac, 0);
}
}
hr();
printf("PLL Tx High Band\n");
for (my $nint = 65; $nint <= 73; $nint++) {
for (my $nfrac = 0; $nfrac <= 130; $nfrac++) {
vco_print($nint, $nfrac, 1);
}
}
exit(0);
|
