Motorola ASTRO Digital Spectra Plus - HLN6837 A ASTRO Spectra Plus Audio;DC Schematic

Schematics, Component Location Diagrams and Parts Lists: ASTRO Spectra Plus VOCON Section 7-55
6881076C25-E September 5, 2008
HLN6837A ASTRO Spectra Plus Audio/DC Schematic
16.8Mhz TO PATRIOT
AUDIO DC BLOCK
32kHz TO PATRIOT
DNP
1.8V and 3.0V Regulators
Reset out
Ana / Dig Ground Conn.
CLOCK GEN
DNP
5V voltage detect
R408
18K
C427
100pF
R400
3.3K
470K
R426
VCC5.0
0.1uF
C435
100K
R406
FEEDBACK
7
GND
4
INPUT
8
OUTPUT
1
SENSE
2
SHUTDOWN
3
VTAP
6
U411
LP2951CD
ERROR
5
0.1uF
C401
C437
0.1uF
100K
C407
.01uF
R409
C444
100pF
5.1K
R404
R429
C403
150pF
0
VCC5.0
R425
10MEG
C428
0.1uF
4.7uF
C417
VCC3.0
U404-2
MC33202
6
5
7
8
4
U412
53D46
CD
5
GND
3
INPUT
2
NC
4
OUTPUT
1
10MEG
39K
R451
R427
R434
2K
0.1uF
TP407
1
C431
2
1
0
R419
VCC5.0
32.768KHz
CC4V
Y401
.01uF
C436
VCC3.0
.01uF
C432
R410
10K
R428
100
0
R430
1
VCC5.0
VCC3.0
VCC3.0
R456
TP400
12pF
0
C406
C424
1
INC
6
L
U_D
2
VDD
8
W
5
0.1uF
U400
MAX5160
7
CS
GND
4
H
3
5
W
0
R421
CS
7
4
GND
3
H
INC
1
L
6
2
U_D
8
VDD
33pF
MAX5160
U401
1K
C404
10MEG
R443
R435
VCC1.8
470K
R441
C420
0.1uF
R405
2.2K
10K
R407
20K
R452
15pF
C439
VCC3.0
0.1uF
C400
22K
R437
4
3.3K
R401
MC33202
U404-1
2
3
1
8
C441
VCC3.0
VCC3.0
3
SHUTDOWN
VTAP
6
0.1uF
5
ERROR
7
FEEDBACK
4
GND
8
INPUT
1
OUTPUT
2
SENSE
TP404
1
LP2951CD
U410
TP401
1
R436
0
VCON
1
12pF
C440
16.80MHz
XTAL
Y400
GND
2
OUT
3
VCC
4
22K
R438
0
R420
L400
1uH
VCC5.0
C415
4.7uF0.1uF
C433
R416
0
R403
VCC3.0
150pF
C429
0
C405
0.1uF
0.1uF
VCC3.0
C422
SC400
SIGNAL_CONVERT
1
I1
2
I2
GND
3
2
NC
1
4
VCC
5
19
TI_POS
20
VAG
1
VAGREF
6
VDD
15
VSS
U409
TC7SH04F
11
MCLK
10
PDI
3
PI
4
PO_NEG
5
PO_POS
2
RO_NEG
17
TGTI_NEG
18
9
BCLKR
12
BCLKT
8
DR
13
DT
7
FSR
14
FST
16
HBTP403
1
MC145483
U402
4.7uF
GND
3
2
NC
14
VCC
5
VCC3.0
C425
12pF
U408
TC7SU04F
470K
R442
C423
C438
R402
.01uF
100K
C430
4.7uF
4.7uF
C434
47K
R455
33K
R454
VCC3.0
C402
1uF
DCLK
MAI
CLIH
CODEC_PWR_DOWN
LV_DETECT
EEPOT_CS
WARP
RX
32k_CLK
FSYNC
TX
SDO
EEPOT_CS_2
EEPOT_U_D*
EEPOT_INC*