Figure 7-5. Hud4022A Controller Audio Schematic - Motorola ASTRO Digital XTL 5000 Detailed Service Manual

Schematics, Component Location Diagrams, and Parts Lists: HUD4022A/HUD4025B (VHF) Main Board
U0202
MAX5452
1
EEPOT_2_CS*
10
EEPOT_CS*
2
EEPOT_U_D*
9
EEPOT_INC*
Part Series
200
Programmable pre-amp stage
-9 dB to +14 dB
C0228
150pF
TP0201
VAG VCC2.85
R0235
10K
R0226 U0201-1
2 4
MC33204
9.3V_TX
1
MIC_A
36K
3
11
VAG
R0200
1K
R0236
MIC_PREAMP_OUT MIC_PREAMP_IN
9.1K
C0223
4.7uF
R0204
560
C0234
MIC_HI*
MIC_HI
0.1uF
C0207
33pF
VCC2.85
U0208
NLAST4599
C0225
4
AUX_TX* NC
AUX_TX
0.1uF
5
COM
C0242
AUX_MIC* 6
AUX_MIC
NO IN 1
0.1uF
6881096C74-B
VCC2.85
C0201
Ground
0.1uF
4
CS1 W1
7
CS2 W2
5
AUDIO_GROUND
U_D L1
6
INC L2
R0202 R0203
3.3K 1K
MIC_F
Programmable pre-amp stage
-14 dB to +14 dB
C0205
C0239
R0229
0.1uF
68K
150pF
TP0202
VCC2.85
U0201-2
C0206
R0207
6 4 MC33204
MIC_E
MIC_B MIC_C 7
MIC_D
7.5K
1uF
5
11
VAG
7 dB Attenuation Stage
1
TP0200
VCC2.85
U0209
NLAST4599
C0224
0.1uF
4 NC
5
COM
6
NO IN 1
MUX_TX
VCC2.85
U0203
NLAST4599
C0212 C0202
0.1uF 0.1uF 4
NC AUX_TX_A
5 AUX_TX_B
COM
R0205
6
1 IN NO
47K
MUX_AUX_TX MUX_MICATTEN
SC0002
SIGNAL_CONVERT
1 2
I1 I2
UNIVERSAL GROUND
Anti-aliasing filter
VCC2.85
C0230 C0236
470pF 470pF
U0201-3
9 4
MC33204
8
R0230
MIC_G 10
MIC_H
11
33K
SAP_DCLK
C0231 C0237
220pF 220pF
R0227
68K
SAP_FSYNC
CODEC_PWR_DOWN
MIC_I
C0232
R0209
470pF
VCC2.85 10K
C0235
TP0203
U0201-4
470pF
13 4
MC33204
C0203
14 MIC_L
R0228
MIC_J 12 MIC_K
11 0.1uF VCC2.85
33K
C0233 C0238
220pF 220pF
SAP_TX
RX_AUDIO_IN
VCC5
SPI_SCKA
EEPOT_3_CS*
TP0205
SPI_MOSIA
U0206
LM1971
R0224
6
CLK
4
LOAD
10K
5
DATA
1
VREFIN
VOLUME_IN 8
R0223
IN OUT
VAG
18K
C0211
100pF
C0227
0.1uF
VCC2.85
R0221
10K
47K
AUDIO_PA_EN
R0225
MIC_N
10K
CODEC_OUT_A
VCC2.85 VCC2.85
C0213
0.1uF
R0218 C0204
1K
VCC2.85
4.7uF
R0208
9
BCLKR
12
100K BCLKT
11
MCLK
8 2 CODEC_OUT
SAP_RX DR RO_NEG
7
FSR
10 U0200
PDI
MC145483
14
FST
MIC_M 4 CODEC_OUT_B
PO_NEG
3 5
PI PO_POS
VCC2.85
18 17
R0210 TI_NEG TG
19 13
TI_POS DT
16
100K HB
R0206
NP
C0208
1 20
100K VAGREF VAG
1uF
VCC2.85
VAG
C0209
0.1uF
R0219
1K
MUX_RX
C0210
0.1uF
TP0206
A+
SC0001
C0215
2 VOL_OUT 0.1uF SIGNAL_CONVERT
2
3 VOL_OUT* 1 2
I1 I2
1
4 5
VCC5
U0207
LM7301
AUDIO_PA_IN 9
INV
1
NINV
3
RR
8
M_SS
C0217
SW_A+ 3300pF
C0220
10uF
R0222
R0220
10K
18K
47K
Q0200

Figure 7-5. HUD4022A Controller Audio Schematic

7-7
TP0204
R0212
100K
RX_FILT_AUDIO
R0216
100K
C0240
0.1uF
CODEC_OUT_C
U0210
NLAST4599
C0216
C0226
0.1uF
NC 4
AUX_RX
AUX_RX*
0.1uF
5
COM
6
1 IN NO
A+_FILT
R0231
0
C0214 C0221
0.1uF 10uF
4
OUT1 SPKR+
U0204
TDA1519C
6
OUT2 SPKR-
C0243 C0244
6800pF 6800pF
MAEPF-27837-O
May 25, 2005