4-20
SYN
F1200
CLK
GP2_OUT
CSX
DATA
LSIO
VOX
SQ_DET
HSIO
CH_ACT
R0251
47K
0.1uF
C0262
C0261
82pF
NU
C0204
0.1uF
C0235
C0231
.022uF
4.7uF
C0251
0.1uF
NU
R0275
1000pF
C0276
5
10K
10uF
C0212
R0206
10K
24K
2
R0273
NU
0.22uF
C0224
100pF
C0233
R0208
0.1uF
2.2K
C0222
100pF
C0243
2200pF
C0203
NU
R0262
100K
0.1uF
C0227
7
4
11
6
MC3403
U0211-2
6
5
R0276
15K
MC3403
2
3
1
4
11
U0211-1
24K
R0221
R0269
470
NU
0.1uF
C0265
0.1uF
C0266
4
Q0271
INV
9
M_SS
8
NINV
1
4
OUT1
OUT2
6
3
RR
VCC
7
U0271
GND1
25
GND2
.033uF
C0273
C0236
3300pF
0.1uF
C0245
C0232
9
0.1uF
0
NU
R0242
C0242
0.1uF
0.1uF
C0241
C0267
.01uF 47K
10K
R0267
R0268
R0265
24K
10uF
C0201
NU
2200pF
D0201
NU
C0205
10K
R0205
R0252
56K
47uF
C0275
7
560
R0202
TP0221
1
C0252
1uF
1
7
0.1uF
C0272
0.1uF
R0223
C0226
30K
0.1uF
C0221
.01uF
C0246
3
10K
R0261
C0271
R0207
.01uF
2.2K
R0222
24K
E0271
57R01
0.1uF
57R01
C0244
1000pF
E0272
C0277
C0254
0.1uF
C0255
0.1uF
7.5K
R0212
R0211
Y1
4
Z
5
Z0
Z1
3
7.5K
GND
VCC
7
VEE
14
X
12
X0
13
X1
15
Y
2
Y0
1
MC14053B
A
11
10
B
9
C
6
EN
8
45
VDDRC
27
VDDSYN
7
VOX
U0251
36
TXRTN
44
TXSND
10
UIO
39
URXOUT
1
VDDA
32
VDDCP
33
VDDD
11
VDDDAC
46
MICINT
40
MOD
26
NC
8
PLCAP
25
PLCAP2
17
SQDET
9
SQIN
28
SYN
31
GNDD
30
GNDD0
47
GNDRC
23
GNDSYN
19
HSIO
LCAP
24
18
LSIO
48
MICEXT
29
F1200
15
GCB0
14
GCB1
13
GCB2
35
GCB3
GCB4
37
38
GCB5
3
GNDA
21
CLK
34
CLK168
20
CSX
6
DACG
5
DACR
DACU
4
22
DATA
2
DISC
12
AGCCAP
41
AUDIO
AUXRX
43
42
AUXTX
16
CHACT
63A53
U0221
1
100K
R0253
TP0222
R0266
24K
NU
MC3403
U0211-4
13
12
14
4
11
MC3403
9
10
8
4
11
MC3403
U0211-3
NU
0.1uF
560
8
C0211
R0204
100
R0201
R0224
11
8.2K
47K
R0241
C0253
100pF
NU
NU
10K
R0274
C0223
0.1uF
0.1uF
C0234
NU
0.1uF
C0274
0.1uF
C0225
9V3
9V3
MODIN
INT_SWB+
CH_ACT
VAG
9V3 9V3
9V3
VS_MIC
MOSBIAS_3
16_8MHZ
VAG
EXT_MIC
TX_AUD_SND
5V_RF
5V_RF
5VD5VD
5V_RF
5V_RF5V_RF
5V_RF
5V_RF
TX_AUD_RTN
SPKR-
RX_AUD_RTN
INT_MIC
URX_SND
FLAT_RX_SND
DC_POWER_ON
FLT_A+
ASFIC CMP
5VD
SPKR+
5VD
DISCAUDIO
PA_PWR_SET
MOSBIAS_2
9V3
FLAT_TX_RTN
NOISE_BLNKR
VS_AUDSEL
SPI(0:10)
GPIO(0:13)
CNTLR_AUDIO(0:7)
VAG
VAG
HANDSET_AUDIO
RX_FLAT_FILTERED_AUDIO
ZWG0130231-A
2.2uF
NU
C0237
R0224
8.2K
NU
R0226
1M
R0227
1M
PA
4.6VDC
80mV RMS
80mV RMS
5VDC (0VDC during radio off)
13VDC unmuted
5VDC muted
300mV RMS
200mV RMS
145mV RMS @25kHz
72mV RMS @12.5kHz
5VDC RX Filtered
Audio (0V DC Flat)
630mV RX Filtered
330mV Flat
0 VDC
Figure 4-14. Controller Audio Schematic Diagram
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