Controller; Vco - Motorola GP2000 Service Manual

7-10
4.2

Controller

MIC
M101
EEPROM
Q114
Key
Pad
PTT Mon
S102 S101
4.3

VCO

RX Local
Buffer
VCO
Buffer
Q308
TX
Buffer
CPU
Q101
LCD Shift
8.38MHz
LC101 Q102
Power
Regulator
RX
VCO
Q311
Q324
TX
VCO
Q325
Q326
Audio
Modulator
Q329
Audio
Divide DTMF
by 2 Decode
Q122 Q120
Reset
Q105
X,tal DA
Converter
X101 Q121
DC/DC
Converter
Q301
Loop
Filter
Q314
Q315
Q316
TX/RX
SW
Q309
Q310
Ripple
Filter
Q330
TX/RX
SW CONTL 5V
Block Diagrams
CPU Pin36
CPU Pin22
RC
NETWORK
CPU
DC
Pin21
AMP
Q125
RC
NETWORK
DIODE
Q126
CPU
Pin87
Pin15
16 PLL
Q323
Pin11
Pin 1 10
2 9
TCXO
14.4MHz
X301
Q320,322
Sub Audio
Modulator
Q322
Sub Audio
CN101
27
35
9
13
31
4
3
15
16
22
25
DATA
CN701
Pin37
38
39