SmarTrunk ST-2112C Service Manual - page 32
9. ST-2112 SCHEMATIC
U10
BH7824
CTLR
1
B_OUT
2
B_IN
3
SP_IN
4
SP1
5
VCC
6
GND
7
SP2
8
Title
Size
Document Number
Rev
Date:
Sheet
of
DM-0911-15
F
RC-2112 R1.4 REF LAY OUT 1.4
D
1
1
Friday , July 11, 2014
CSRAM
PAENA
C173
10nF
C44
1nF
F1
C2Q 3
+
C93
10uF
C175
1uF
C174
1uF
2K2
R141
6.8K
D6
DAN222
1
3
2
R107
120K
R106
10K
R45
47K
5VAF
C178
2.2uF
C179
1nF
VOL
J3
ROTARY
1
2
3
4
5
6
PWR_FB
C176 100nF
C194
100pF
+5V
18V
+
C231
10uF
C235
10nF
C45
NC
R126
10
C249
1nF
U16
HT7218
Vin
1
GN
D
2
Sht
3
Vout
5
BP
4
C248
10nF
C74
100nF
Q5
DTC114EM
C223
1nF
R121
47K
C193
47pF
R115
10K
R41
1K
R95
10K
R90
10K
C98
1uF
C148
1nF
C160
1uF
PWR_TUNE
C119
100nF
C120
10uF
R96
3K3
R91
10K
C149
1nF
C158
1uF
Y 3
16Mhz
1
2
3
4
R42
4K7
MOD2
C192
47pF
R79
47
C140
100nF
C169
1nF
t
RT1
33tk
1
2
C5
100nF
PRO CESSO R CLO CK
3VD
UPCK
J6
CON4
1
2
3
4
C155
NC
C66
100nF
C89
NC
10
220K
150
1uF
MOD1
C191
47pF
15pF
MOD2
R85
1K
R81
1K
C144
1nF
CLKADJ
CLKADJ
C
258
100nF
TP2
1
TP1
1
TP3
1
CSFM
C161
0
R89
33K
R94
10K
C156
100nF
C145
1nF
3VA
SCL
SDA
C147
NC
10pF
3VD
SDA
SCL
+7V
+5V
C188
1nF
C189
100pF
C190
100pF
C187
1nF
C127
10nF
C80
2.2uF
C186
1nF
L18
LCB1608-600
BAR63
10uF
C184
1nF
C81
NC
R32
22K
5pF
U4
AT23DF321
CS
1
SO
2
WP
3
GND
4
SI
5
SCK
6
HOLD
7
VCC
8
VBUS
3VD
R93
10K
R31
100K
MOD1
J7
HEADER 2
1
2
C224
1nF
U6
CMX-618
AVDD
1
AVSS
2
BIAS
3
VSSREF
4
INPP
5
INPN
6
AVDD
7
AVSS
8
VSSPA
9
OUTP
10
OUTN
11
VDDPA
12
VD
D
13
IOVD
D
14
EC
D
I
15
EC
D
O
16
EC
C
LK
17
EC
C
S
18
EEC
19
R
ESC
20
NC
21
VSS
22
C
SEL
23
IOVD
D
24
SY NC
25
VSS
26
XTALIN
27
XTALOUT
28
IOVDD
29
RESETC
30
XTALSEL1
31
XTALSEL2
32
XTALSEL3
33
ENABXTAL
34
IOVDD
35
NC
36
NC
37
NC
38
NC
39
NC
40
VSS
41
SC
LK
42
SM
OSI
43
SM
ISO
44
C
SC
45
IR
QC
46
IOVD
D
47
VD
D
48
AGND
49
U5
CMX-7141
SMOSI
1
SSCK
2
SMISO
3
SCS
4
BOOTEN1
5
BOOTEN2
6
DVSS
7
IRQN
8
VDEC
9
GPIOA
10
GPIOB
11
SYSC
LK1
13
D
VSS
14
T
XEN
A
15
D
ISC
16
D
ISC
F
B
17
ALT
18
ALT
F
B
19
MICFB
20
MIC
21
AVSS
22
M
OD
1
23
M
OD
2
24
VBIAS
25
AUDIO
26
ADC1
27
ADC2
28
ADC3
29
ADC4
30
AVDD
31
DAC1
32
DAC2
33
AVSS
34
DAC3
35
DAC4
36
D
VSS
37
VD
EC
38
XT
AL/
C
LK
39
XT
ALN
40
D
VD
D
41
M
OSI
42
M
ISO
43
SSOU
T
44
D
VSS
45
SC
K
46
SYSC
LK2
47
C
SN
48
AGND
49
R4
NC
RADIO CLOCK
POWER CONTROL
GPSTX
GPSRX
MISO
SCK
MOSI
C64
100nF
R14
1K
IRQA
R58
1K
GPSTX
AUDIO
3VA
C65
1nF
C49
5pF
TX POWER SUPPLY
ROW3
NAV
ROW1
ROW2
C105
10uF
C106
10uF
GPSRX
Y 2
TXCO19.2M
1
2
3
4
10pF
C99
100nF
R40
47
C48
1nF
C47
100nF
R137
1K
Q4
DTA114EM
C207
1nF
C206
1nF
C209
1nF
C208
1nF
C211
1nF
C210
1nF
C212
1nF
13nH
L15
47nH
C216
1nF
C76
NC
82pF
L9
27nH
PWCTRL
R52
1K
C50
NC
R15
1K
RDA POWER SUPPLY
CSR
R39
100
C97
1nF
C88
1nF
R44
100
3VD
XC1
XC2
XC2
XC1
CODEC
C213
1nF
C215
1nF
D3
BAR63
C214
1nF
PRO G RA M M IN G
15nH
0
27nH
150
150pF
13nH
13nH
13nH
13nH
15nH
R70
22
R68
22
47pF
UPCK
R55
10K
22
3VD
CSD
SUB
VBAT
D0
FNC
D1
D2
D5
D3
D4
U18
XC6201
VIN
3
VOUT
1
GN
D
2
2pF
D6
D7
GPS
SCK
MOSI
MISO
C183
1uF
+
C198
10uF
SCK
MOSI
MISO
33pF
10pF
7pF
C25
1nF
C51
NC
U8
AT90USB
BIAS
1
SMTK
2
NC1
3
UDP
4
UDM
5
UVSS
6
UCAP
7
VBUS
8
UID
9
TX_LED
10
SCK
11
MOSI
12
MISO
13
SPEECH
14
IRQVOC
15
C3VR
16
IR
QN
17
GPS
18
R
ESET
20
VC
C
1
21
GN
D
1
22
NC2
23
SYSC
LK
24
SC
L
25
SD
A
26
R
XD
27
T
XD
28
R
SW
A
29
R
SW
B
30
R
SW
C
31
R
SW
D
32
EXTPTT
33
IRQR
34
CSFM
35
CSRAM
36
CSR
37
CSD
38
CSA
39
CSN
40
CBL
41
SUBD
42
RX_LED
43
D7
44
D6
45
D5
46
D4
47
D3
48
D2
49
D1
50
D0
51
VC
C
2
52
GN
D
2
53
SI
D
E
54
VBAT
55
FMIC
56
R
OW
1
57
R
OW
2
58
R
OW
3
59
FNC
60
N
AV
61
AVC
C
1
62
AGN
D
63
AVC
C
2
64
CHR
19
GND
65
R25
560
Q2
2SC3356
3
2
1
R22
2K2
13nH
R111
1K
BAT
U11
MIC2290
IN
2
EN
3
GN
D
4
GN
D
8
SW
7
OUT
1
FB
6
NC
5
HS
9
L17
10uH
C52
150p
R26
22
+
C181
10uF
6.8pF
R110
3K3
R108
33K
+
C182
10uF
RESET
C136
4.7uF
R92
10K
3VD
VCTRL
D5
RR264M
TEMP
RESET
150pF
UVSS
UID
UDM
UDP
VBUS
MISO
SCK
MOSI
C20
10nF
P1
TEST 1
1
1
L5
47nH
CBL
R16
470
MAIN CLOCK
C14
150pF
15pF
R12
10
TX5V
DET
C26
100pF
C33
8pF
C67
NC
220K
150pF
CSA
C62
100pF
L14
0
L16
NC
D4
HSM88AS
3
1
2
L10
0
C34
**
C40
1nF
SDA
SIDE
AUDIO
C167
100nF
C168
10uF
BAR63
IRQA
RXD
C219
100pF
TX5V
R43
82K
U2
MCP6241U
Vin+
1
VSS
2
Vin-
3
Vout
4
VDD
5
JP2
CONN18X2
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
NAV
R35
470K
TP9
1
C83
10nF
R34
120K
C90
10nF
P4
HEADER 1
1
1
P11
HEADER 1
1
1
P10
HEADER 1
1
1
P9
HEADER 1
1
1
P8
HEADER 1
1
1
P7
HEADER 1
1
1
P6
HEADER 1
1
1
P5
HEADER 1
1
1
R17
47
MOD2
MOD1
C61
0
R18
47K
RV1
10k
3
1
2
4
5
OUTP
AUDIO
VOL
MOUT
DET
3VD
PWR_TUNE
C222
10nF
C124
10uF
C123
100nF
PWFB
P14
HEADER 1
1
1
P13
HEADER 1
1
1
P12
HEADER 1
1
1
18V
R83
4K7
C15
150pF
C16
10nF
C220
100pF
C138
10nF
3VA
3VD
R13
10K
PWR_TUNE
Q3
2SK3475
1
3
2
+
C257
22uF
+7V
P16
HEADER 1
1
1
P15
HEADER 1
1
1
P17
HEADER 1
1
1
3VR
3VD
L6
27nH
3VD
C21
1nF
+5V
5VAF
L2
BEAD
1
2
C77
NC
+7V
C154
1nF
C153
100nF
C3
1nF
C4
10nF
R72
330
3VD
RA D IO
C103
1nF
13nH
3VR
RXLED
TXLED
D8
LTST-C195KGJRKT
2
4
1
3
3VR
PINK VALUES CORRESPOND TO ST-2112C
+
C63
10uF
C29
NC
R76
330
C24
68pF
+
C82
22uF
P18
HEADER 1
1
1
22pF
7pF
1uF
47pF
100pF
100pF
150pF
0.5pF
0.5pF
6.8pF
L8
0
C118
1nF
C35
**
C117
100nF
TP8
1
C36
**
TP7
1
TP4
1
C37
15pF
TP6
1
TP5
1
C38
56pF
R23
470
Q1
2SK3476
1
3
2
C19
1nF
SPEECH
10
22pF
R87
10K
SMTK
C42
NC
C41
NC
C43
NC
18V
15nH
C46
NC
R98
4K7
C141
1uF
CSA
C115
100nF
C116
1nF
R21
47
C18
150pF
J8
HEADER 2
1
2
C17
1uF
27pF
3VA
FNC
ROW3
ROW1
C135
100nF
ROW2
R19
10K
R10
10K
PWR_TUNE
R11
47K
PWFB
TEMP
C139
NC
L1
LCB1608-600
1
2
L4
27nH
C134
100nF
+7V
3VD
C13
1nF
C12
470pF
Y 1
12.8Mhz
1
2
3
4
C1
150pF
+
C2
10uF
R100
1K
C84
1nF
C162
1nF
CSN
GREEN VALUES CORRESPOND TO ST-2112V
IRQR
C230
1nF
R133
10K
SCL
MICN
MICP
CHR
5pF
7pF
C163
1nF
C146
NC
C128
1nF
CBL
R104
0.2
R62
10K
R86
1K
CHR
BAT
R97
1K
VBUS
100pF
+5V
3VR
OUTP
+
C227
10uF
C164
1nF
C233
10nF
+
C228
10uF
U14
HT7233
Vin
1
GN
D
2
Sht
3
Vout
5
BP
4
R124
2.2
OUTP
SMTK
C137
100nF
C129
1nF
J9
HEADER 2
1
2
C180
100pF
R82
10k
C170
NC
C87
NC
18V
C150
100nF
C165
1nF
SMARTRUNK SYSTEMS, INC
C130
1nF
VCTRL
R9
1K
27pF
EXT PTT
AUDIO POWER SUPPLY
MAIN POWER SUPPLY
LEDS
ACCESORY
BATTERY CHARGER
BATTERY
CODEC POWER SUPPLY
ANALOG POWER SUPPLY
MICROPHONE
PROCESSOR POWER SUPPLY
R131
10
C152
100nF
MEMORIES
R129
6.8K
C256
10uF
C255
10uF
MAIN PROCESSOR
13nH
C131
1nF
R117
47
J1
Antenna
1
2
3
4
5
6.8pF
0.5pF
C5VT
3VD
AUDIO PA
150pF
C142
1nF
R132
10
MICN
R27
2M2
+5V
+7V
+
C237
10uF
U17
XC6201
VIN
3
VOUT
1
GN
D
2
R127
2.2
+
C236
1uF
C171
NC
L7
3.3nH
J2
USB
1
2
3
4
5
6
7
R29
100
C78
150pF
CSFM
CSRAM
C30
1pF
C32
1nF
CSR
C58
18pF
R78
0
R30
100K
C55
15pF
R80
0
CSN
R74
1K
C59
5pF
R75
0
L13
22nH
R77
0
R28
100
R73
0
C31
1pF
PWFB
R67
1K
R60
10K
R69
1K
R59
10K
R71
1K
R66
1K
R61
10K
R63
10K
R65
1K
3VD
R5
1K
R7
1K
R6
1K
C143
NC
PAENA
D7
RB886
IRQN
IRQR
R128
2.2
+7V
PWR_FB
R54
1K
3VD
R51
1K
R53
1K
C121
1nF
R114
22K
R119
10K
C23
1nF
R112
100K
VINT
15pF
2pF
2.4pF
MODEM
TX5V
L3
.82uH
C8
470pF
R8
100
C57
27pF
L12
22nH
3VD
C54
12pF
MISO
SCK
0.5pF
MOSI
15nH
VBUS
3VD
U7
23K640
CS
1
SO
2
WP
3
GND
4
SI
5
SCK
6
HOLD
7
VCC
8
MISO
C151
100nF
MOSI
SCK
R138
100
22
DET
SPEECH
L11
22nH
C7
1nF
3VR
C56
39pF
R139
100K
D1
BAR88
C27
82pF
C110
1nF
22uF
FMIC
FMIC
C159
1uF
MICP
MOUT
C247
1nF
C244
1nF
EXTK
EXTK
R116
4K7
R113
470
3VD
C111
1nF
D9
RB886
C185
4.7uF
C199
100pF
U1
RDA1846
AVDD1
1
SCK
2
MOSI
3
AVDD2
4
XTAL1
5
XTAL2
6
MODE
7
CSR
8
AF
O
9
NC1
10
MIC
11
CC
12
AVD
D
3
13
NC2
14
RFIN
15
AVD
D
4
16
NC3
17
RFOUT
18
NC4
19
NC5
20
AVDD5
21
PABIAS
22
AVDD6
23
PDN
24
IO7
25
IO6
26
IO5
27
IO4
28
M
ISO
29
INT
30
SU
BD
31
SU
B
32
GND
33
C100
100nF
R56
10K
C112
1nF
CSVOC
MISO
IRQVOC
C226
1nF
SCK
MOSI
15pF
15pF
SCK
C
241
1nF
C53
10pF
CSVOC
IRQVOC
MOSI
C232
1nF
C200
100pF
TXLED
C113
1nF
RXLED
R64
1K
R57
22K
27nH
C201
1nF
2K2
C240
10nF
C202
1nF
R120
100K
C72
100nF
C73
1nF
2.4pF
MOUT
C3VR
C60
0
C3VR
LS1
SPEAKER
+5V
3VD
C254
100nF
+
C243
10uF
C251
10nF
C68
150pF
U19
HT7233
Vin
1
GN
D
2
Sht
3
Vout
5
BP
4
R130
2.2
C
253
1nF
C252
10nF
TXD
TXD
U3
HT7250
Vin
1
GN
D
2
Sht
3
Vout
5
BP
4
C177
100nF
TX5V
JP1
PROG
1
2
3
4
5
6
7
C94
10nF
C203
1nF
C166
100pF
R135
1K
R134
2K2
R37
2.2
+7V
VINT
+
C91
10uF
R140
10K
C101
10nF
GPS
CSD
EXTPTT
+
C238
1uF
J4
3.5mm
1
2
3
4
5
C5VT
R2
10
C70
1nF
C71
1nF
R136
4K7
SW4
SW KEY -Y M061
1
2
3
4
5
6
7
8
3VA
+
C95
10uF
C204
1nF
+5V
SIDE
+
C229
10uF
C234
10nF
C245
10nF
R105
22k
R125
2.2
C246
1nF
U15
HT7233
Vin
1
GN
D
2
Sht
3
Vout
5
BP
4
PWCTRL
R109
22k
C10
100nF
C96
10nF
J5
TG-2915
1
2
3
4
5
C11
1nF
R33
100
PTT
SIDE UP
C125
NC
C126
100nF
EMERGENCY
SIDE DOWN
SUB
5VAF
C205
1nF
R122
33K
VBAT
+
C239
10uF
R123
47K
C122
1nF
RCLK
RCLK
+
C86
10uF
TX5V
R36
56K
0
3VD
RXD
MK1
MIC
1
2
C85
10nF
C217
1uF
TX5V
R46
47K
D2
D0
D1
C102
10nF
D4
D3
BLUE VALUES CORRESPOND TO ST-2112V
MODELS, THEN Y OU WILL FIND THREE VALUES UNDER THE COMPONENT.
IF COMPONENT IS DIFERENT BETWEEN THE DIFERENT
REFERENCES
D5
D6
D7
IRQN
C133
1nF
C
250
1nF
150pF
R38
22K
5pF
R118
1K
C157
1uF
R50
10K
C132
10uF
C242
10uF
EXTPTT
U12
MCP6241U
Vin+
1
VSS
2
Vin-
3
Vout
4
VDD
5
3VA
C221
4.7uF
C114
1nF