NAD M12 Service Manual - page 16
2.MDC BOARD (2/3)
16
Y 3000
8 MHz
C3132
20P
C3128
20P
DGND
R3143
1MEG
RG15
1
VDD
2
PMD5/RE5
3
PMD6/RE6
4
PMD7/RE7
5
T2CK/RC1
6
T3CK/RC2
7
T4CK/RC3
8
SDI1/T5CK/RC4
9
PMA5/SCK2/CN8/RG6
10
PMA4/SDI2/CN9/RG7
11
PMA3/SDO2/CN10/RG8
12
MCLR
13
PMA2/SS2/CN11/RG9
14
VSS
15
VDD
16
C1
O
U
T
/A
N
8
/RB
8
32
AVS
S
31
AVD
D
30
P
M
A
6
/V
RE
F
+
/CV
RE
F
+
/RA
1
0
29
P
M
A
7
/V
RE
F
-/
CV
RE
F
-/
RA
9
28
PG
ED
2
/A
N
7
/R
B7
27
PG
EC
2
/A
N
6
/OC
F
A
/R
B6
26
TMS/RA0
17
INT1/RE8
18
INT2/RE9
19
VBUSON/C1IN+/AN5/CN7/RB5
20
C1IN-/AN4/CN6/RB4
21
C2IN+/AN3/CN5/RB3
22
C2IN-/AN2/CN4/RB2
23
PGEC1/AN1/CN3/RB1
24
PGED1/AN0/CN2/RB0
25
C2
O
U
T
/A
N
9
/RB
9
33
C
V
R
EFO
U
T
/P
M
A
1
3
/A
N
10
/R
B10
34
P
M
A
11/
A
N
11/
R
B
11
35
VS
S
36
VD
D
37
TC
K
/R
A
1
38
U
2
RT
S
/B
CL
K
2
/RF
1
3
39
U
2
CT
S
/RF
1
2
40
P
M
A
11/
A
N
12/
R
B
12
41
P
M
A
10/
A
N
13/
R
B
13
42
P
M
A
L
H
/P
M
A
1/
A
N
14/
R
B
14
43
P
M
A
L
L
/PMA
0
/A
N
15/
O
C
F
B
/C
N
12/
R
B
15
44
VS
S
45
VD
D
46
CN
2
0
/U
1
CT
S
/RD
1
4
47
U
1R
T
S
/B
C
L
K
1/
C
N
21/
R
D
15
48
P
M
A9
/U
2
R
X/
C
N
1
7
/R
F
4
49
P
M
A8
/U
2
T
X/
C
N
1
8
/R
F
5
50
USBID/RF3
U1RX/RF2
U1TX/RF8
VBUS
VUSB
D-/RG3
D+/RG4
SCL2/RA2
SDA2/RA3
TDI/RA4
TDO/RA5
VDD
OSC1/CLKI/RC12
OSC2/CLKO/RC15
VSS
SCL1/INT3/RA14
SDA1/INT4/RA15
IC1/RTCC/RD8
IC2/SS1/RD9
IC2/SCK1/PMCS2/PMA15/RD10
IC4/PMCS1/PMA14/RD11
SDO1/OC1/INT0/RD0
SOSCI/CN1/RC13
SOSCO/T1CK/CN0/RC14
VSS
OC
2
/R
D
1
OC
3
/R
D
2
OC
4
/R
D
3
P
M
D
12/
IC
5
/R
D
12
P
M
D
13/
C
N
19/
R
D
13
P
M
W
R/
O
C5
/CN
1
3
/RD
4
P
M
RD
/C
N
1
4
/RD
5
P
M
D
14/
C
N
15/
R
D
6
P
M
D
15/
C
N
16/
R
D
7
V
CA
P
/V
D
D
CO
RE
EN
V
R
EG
P
M
D
11/
R
F
0
P
M
D
10/
R
F
1
PM
D
9
/R
G
1
PM
D
8
/R
G
0
T
RCL
K
/RA
6
TR
D
3
/R
A
7
PM
D
0
/R
E
0
PM
D
1
/R
E
1
TR
D
2
/R
G
1
4
TR
D
1
/R
G
1
2
TR
D
0
/R
G
1
3
PM
D
2
/R
E
2
PM
D
3
/R
E
3
PM
D
4
/R
E
4
U3058
PIC32MX 460FH
PGCL K
PGDA TA
MCLR
PCL K
PMISO
PSTB
R3095
4.7K
R3096
4.7K
IRFa
IRE
R3119C
120R
R3119B
120R
R3119A
120R
R3119D
120R
R3121B
120R
R3121C
120R
R3121D
120R
R3121A
120R
R3123B
47R
R3123C
47R
R3123D
47R
R3123A
47R
PMOSI
5
$
5
5
'
5
5
&
5
5
%
5
5
$
5
5
'
5
5
&
5
5
%
5
FPLED
SCL0
SDA 0
A 0
1
A 1
2
A 2
3
V ss
4
SDA
5
SCL
6
WP
7
V dd
8
U3052
24LC64
DGN
'
C3102
100N
SCL
SDA
DGND
3V 3S
3V 3S
3V 3S
V BUSON
5
5
9
USB
R3135
.
R3136
5
TX a
RX a
TRIG IN
TRIG ON_OFF
5
.
5
.
5
.
R3133
4K 7
R3134
4K 7
C3127
2N2
D300
3V6
3V 3S
3V 3S
3V 3S
DGND
DGND
DGND
3V 3S
DGND
3V 3S
DGND
3V 3S
&
22U/6.3V
&
100N
9 6
' * 1 '
3V 3S
DGND
C3114
100 N
3V 3S
DGND
C3115
100 N
3V 3S
DGND
C3116
100 N
3V 3S
DGND
C3119
100 N
3V 3S
DGND
C3120
100 N
3V 3S
DGND
C3121
100 N
3V 3S
DGND
C3122
100 N
3V 3S
DGND
C3113
22U/ 6.3 V
DGND
R3144
10R
C3
35
22U
/
6
.3V
C3134
100 N
DGND
R3132
5
R3131
5
3V 3S
ENCBa
ENCA a
SCL0
SDA0
DETM1
PCL K
PMOSI
PMISO
PA 0
PA 1
PA 2
PSTB
MUTEVA
IN TM1i
IN TM2i
IN TM0i
DETM2
DETM3
DETM0
MUTEVA
PCLK
PMISO
PMOSI
PSTB
PA0
PA1
PA2
INTM1i
INTM2i
DETM0
DETM1
DETM2
DETM3
MnMOS I
MnCS
MnCK
MnMOSI
MnCS
MnCK
5
$
5
5
'
5
5
&
5
5
%
5
5
$
5
5
'
5
5
&
5
5
%
5
5
$
5
5
'
5
5
&
5
5
%
5
5
5
C3124
1N
1D+
1
1D-
2
2D+
3
2D-
4
GN
D
5
OE
6
D-
7
D+
8
S
9
VC
C
10
U3056
TS3USB3000
MCUD+
MCUD-
DGND
USB_DN
USB_DP
1
2
3
4
5
J3003
TO FPP USB
DGND
V USB
C3126
100nF
USBSF
DGND
3V 3S
DGND
C3125
4U7
L3014
742792662
DGND
3V 3S
R
316
1
.
R3
1
6
2
.
R
316
3
.
C3138
10N
C3136
10N
C3137
10N
DGND
DGND
DGND
5
.
R3
1
6
4
.
C3139
10N
DGND
R3128B
5
R3128C
5
R3128D
5
R3128A
5
R3120C
5
R3120B
5
R3120A
5
R3120D
5
R3122C
5
R3122B
5
R3122A
5
R3122D
5
R3125
5
R3126
5
R3129
5
R3130
5
VBUS_ON
C3129
100N
3V 3S
RESET
1
GND
2
RESET
3
V DD
5
MR
4
U3057
TPS3825
DGND
MC
L
R
R3124
0R
5
.
R3158B
120R
R3158C
120R
R3158D
120R
R3158A
120R
R3
1
5
6
100
R
(
n
c
)
C314 1
100N
3V 3D
DGND
R3159
100R
R3148
100R
R3152
100R
IIS CLK Z0
IIS DOZ0
IIS FSZ0
DGND
DGND
-
TO DDFA BOA RD
3V 3S
C3123
22N
1
2
3
4
5
6
7
8
9
10
11
12
13
14
J3002
TO RS232 BOA RD
TRI GON_OFF
TRI GIN
232 TX
232 RX
IR E
DGND
DGND
C310 7
100 N
R3100
100R
R310 3
100R
R3099
100R
3V 3S
DGND
3V 3S
DGND
a1
gnd
a2
y 2
vcc
y 1
U305 3
NC7WZ17
a1
gnd
a2
y 2
vcc
y 1
U305 5
NC7WZ17
DGND
C3109
100N
3V 3D
DGND
R310 5
100R
3V 3D
R3101
100R
DGND
a1
gnd
a2
y 2
vcc
y 1
U305 4
NC7WZ17
C310 8
100 N
3V 3D
DGND
R3102
100R
3V 3D
F_MOS I a
F_CLKa
F_S TBa
F_BuS Y a
F_MI S Oa
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
J3001
TO FPP BOA RD
Q3007
DTC114EKA
R30 98
4K7
3V 3S
R
3
097
10
K
DGND
S TBY a
S TBY
F_MOS I
F_S TB
F_CLK
F_MI S O
F_BuS Y
5V S
C310 5
2U2
DGND
5V 3D
C3103
10U/10V
C3104
10U/10V
DGND
DGND
DGND
DGND
R3113
10K
R311 7
10K
3V 3D
3V 3D
C3117
10N
C311 8
10N
DGND
DGND
R311 5
100R
R311 4
100R
ENCB
ENCA
5
5
R
316
9
100
K
C
314
2
2N2
D
3004
3V
6
12V 5DTM0
5
5
5
5
5
5
R3138
5
R3
1
2
7
1K
V BUSV DT
5V 3D
DGND
R3139
27K
R3141
4K 7
C3130
2N2
D300
3V6
14V DET
DGND
R3140
4K 7
R3142
4K 7
C3131
2N2
D300 3
3V6
DGND
V BUSV DT
12V 5DTM1
12V 5DTM2
12V 5DTM3
C3
1
4
3
2N2
C
314
4
2N2
C3
1
4
5
2N2
DGND
R
317
0
100
K
D
3005
3V
6
R
317
1
100
K
D
3006
3V
6
R
317
2
100
K
D
3007
3V
6
DGND
DGND
DGND
DGND
IR F
IR Fa
DGND
D3000
PESD3V 3
Q3008
DTA 114
3V 3S
R3
10
4
1K
F_LED
R3137
5
STBY
5
5
DGND
3V 3S
1
2
3
4
P3000
Header 4
R3116
10 0R
R3118
10 0R
C311 2
100
n
L3013
FB
DGND
C3110
100 N
DGND
RX a
TX a
MCLR
3V 3S
DGND
PGCL K
PGDA TA
1
2
3
4
5
CON3004
I CSP
RX D
TX D
5
5
14V_EN
14V _EN
M0M3GPIO 1
M0M3GPIO1
IIC_RST
M0M3GPIO2
M0M3GPIO3
M0M3GPIO4
M1M4GPIO1
M1M4GPIO2
M1M4GPIO3
M1M4GPIO4
M2M5GPIO1
M2M5GPIO2
M2M5GPIO3
M2M5GPIO4
M0M3GPIO 2
M0M3GPIO 3
M0M3GPIO 4
M1M4GPIO 1
M1M4GPIO 2
M1M4GPIO 3
M1M4GPIO 4
M2M5GPIO 1
M2M5GPIO 2
M2M5GPIO 3
M2M5GPIO 4
M0M3GPS
M1M4GPS
M2M5GPS
GPIO EN
M0M3GPS
M1M4GPS
M2M5GPS
GPIOEN
IIC _RST
R3318
.
R
331
3
.
R
331
2
.
5
.
C32 34
10N
C32 35
10N
DGND DGND
DETM4
DETM5
DETM4
DETM5
R3314
120R
IISFSZ0
IISCLKZ0
IISDOZ0
IIS CLK Z1
IIS DOZ1
IIS FSZ1
IISFSZ1
IISCLKZ1
IISDOZ1
IIS CLK Z2
IIS DOZ2
IIS FSZ2
IISFSZ2
IISCLKZ2
IISDOZ2
IN TM0i
INTM0i
Q3028
DTA 114
3V 3S
R3
3
2
0
1K
Z_TX D
Z_RX D
DGND
1a
3y
2a
gnd
2y
3a
1y
vcc
U3059
NC7NZ34
3V 3D
Z_IN Ta
Z_IN T
R3146
0R
R3145
0R
C32 43
22N
C32 44
22N
X M1002
HOLE
X M1005
HOLE
R
332
4
100
R
R3
3
2
3
100
R
DGND
D3
0
1
9
1S
S
352
D3
0
2
0
1S
S
3
52
D3021
1SS352
D3022
1SS352
C32 46
22N
X M1003
HOLE
X M1006
HOLE
R3
3
2
6
100
R
D3
0
2
4
1S
S
352
D3026
1SS352
C32 41
22N
C32 42
22N
X M1001
HOLE
X M1004
HOLE
R
332
2
100
R
R3
3
2
1
100
R
D
301
6
1S
S
3
52
D3
0
1
7
1S
S
3
52
D3014
1SS352
D3015
1SS352
DGND
DGND
C32 47
22N
X M1007
HOLE
R
332
7
100
R
D
302
7
1S
S
3
52
D3028
1SS352
X M100
HOLE
X M101
HOLE
X M102
HOLE
X M103
HOLE
X M104
HOLE
X M105
HOL
(
C3248
1N
C3249
1N
C3250
1N
R3328
0R
R3329
0R
R3330
0R
DGND
DGND
FW
_
L
E
D
USBID
STBY
TRIG _OUT
13.8V
R333 2
10R
F_LCD_RS T
F_LCD_RS T
5V_EN
5V _EN
12V 5DTM4
12V 5DTM5
D3
0
18
3V
6
5
334
1
100
K
R3338
0R
C
325
4
1N
R3340
1K
R3339
0R
C3
2
5
5
1N
D
3029
3V
6
R3
3
4
2
100
K
R3343
1K
DGND
C32 65
1N
1D+
1
1D-
2
2D+
3
2D-
4
GN
D
5
OE
6
D-
7
D+
8
S
9
VC
C
10
U3060
TS3USB3000
DGND
3V 3S
DGND
C3245
4U7
L3032
742792662
DGND
CUSBD_P
CUSBD_N
CUSBD_P
CUSBD_N
BUSBD_P
BUSBD_N
A USBD_P
A USBD_N
BUSBD_P
BUSBD_N
AUSBD_P
AUSBD_N
Q3036
DTC114EKA
R33 49
1k
3V 3S
R33 25
10 K
DGND
R3147
1k
R3348
10K
DGND
BCUSB_EN
USBBC_SEL
USBBC_SEL
P1001
Mounting Block