Alinco DX-70, Service Manual

Page: 33 / 116

18) MB87014A (XA0298)
PLL Frequency Synthesizer
NO
Pin Name I/O Descnption
1
OSC'N
1
Crystal connection terminal
2
OSC
out
o
Crystal connection terminal
3 N
o
Phase comparator input monitor terminal
Comparator divider output terminal
4 V
dd
Power supply
5 Dop
0
Passive LPF connection terminal
fr>fv: Dnve mode. Dop«'H'"
fr-fv: High impedance
!r<tv Sink mode. Oop-"L"
Vss GND terminal
ID 0
Phase detector output terminal
L o ck»"H U n iock« ne ga tive pulse
fin Prescaler input terminal
9 Clock Senal clock input terminal
10 Data Senal data input terminal
LE
1
Load enable input terminal
12 Do*
o
Active LPF connection terminal
1r>fv; Sink mode. D
oa
- 'L ”
fr»tv High impedance
fr<tv. Dnve mode.
13 0
Phase COmparalOr input monitor terminal
Reference divider output terminal
14 NC No connection
15 0V 0 Differentia! LPF connection terminal
16
0R
0
lr>fv. e V -'H ". aR«"L"
tr-tv e V .-H ",
b
R .-H ”
tr<tv.
b
FU'H"
OSC
out
CZZ
1
16
2
15
3
CD
14
4
00
o
13
5
-C*
>
12
G
11
7
10
8
9