7
Block diagram
Anal og card
INPUT FORMAT
VOLUME
TREBLE,BASS,EQ
SAMPLE RATE
CONVERTER
ZTA FILTER
4th ORDER
NOISE SHAPER
PWM
OUTPUT
MCLK 108M
FS
2
450
FS
SAMPLER
(ADC)
NOISE
SHAPER
3rd
ZETEX FPGA
DDFA
CONTROL
INTERFACE
DC/D C AND LDO
+/-12V 3V3D 5VA +/-7V
Signal
Pow er
c
ont rol
Main MCU
PIC32MX460F 512L
R3V6
USB SWITCH
TS3USB3000
PHONO
MC/MM
AMP
VO
LU
M
E
CO
NTRO
L
N
J
W
1195
ADC BUF
NE5532
A DC PCM1804
ADC BUF
NE5532
BAL BU
)
OPA2134
SE-BAL
S
I9
573
H
D
M
I T
ra
nscei
ver
MCU
TM4C1230H 6PM
DC/DC AND LDO
3.3V 5.0V 1.3V
HDMI IN 3
HDMI IN 2
HDMI IN 1
HDMI OUT
IIS switcher
NC7SV157X 3
BAL
SE
PHONO
DC/DC AND LDO
5VD 3V3D 1V0
Type B
TS3USB221
XMOS USB 2.0
AT32UC3A0512
USB HOST
XS1-L1
Type A
IIS switcher
COAX 1
COAX 2
OPTO1
OPTO2
AES/EBU
SPD
IF
I
N
SPDIF
RX
AK4118A
46
pi
n
b
oa
rd
-board
s
oc
k
e
t
IIS0
INT0
IIC
GPIO 0-3
FPu s b
SPI
12V EN
DC/DC
46
pi
n
b
oa
rd
-board
s
oc
k
e
t
IIS1
INT1
IIC
GPIO 4-7
FPu s b
SPI
12V EN
DC/DC
46
pi
n
b
oa
rd
-board
s
oc
k
e
t
IIS2
INT2
IIC
GPIO 8-11
FPu s b
SPI
12V EN
DC/DC
46
pi
n
b
oa
rd
-board
s
oc
k
e
t
IIS3
INT3
IIC
GPIO 12-15
FPu s b
SPI
12V EN
LDO
46
pi
n
b
oa
rd
-board
s
oc
k
e
t
IIS4
INT4
IIC
GPIO 16-19
FPu s b
SPI
A12V EN
DC/DC
CB3Q3305
CB3Q3305
CB3Q3305
IIS BUFFER
NC7SV157
7WV17
FLIP FLOPS
OPAMP
FLIP FLOPS
LME49990
NC7SZ374
NC7SZ374
ch 0-3
ch 4-7
OPAMP
LME49990
OPA1652
DC SERVO
ANA LOG
mute
OPAMP
LME49990
OPAMP
LME49990
OPA1652
DC SERVO
D
Q
CP
D
Q
CP
OPTIONA L MODULE S
HDM I card
USB car d
DIG car d
L
R
I/O
e
x
te
n
d
e
r
I/
O
e
x
te
nder
74C
B
3Q
3257
HC5
9
5
SPI
IIC
GPIO 0-19
INT 0-4
ESD
DI ODE
E-GPO
E-GPO
E-GPO
E-GPO
E-GPO
E-GPO
E-GPI
SPI
SPI
DI
G
IT
A
L
DI
G
IT
A
L
DI
G
IT
A
L
DI
G
IT
A
L
DI
G
IT
A
L
LDO
12.5V
Asynchronous
SRC
SRC4382
IIS BUFFER
NC7SV157
IIS Main1
I I S M ain1
DIG ITA L
OU
T
P
U
T
Front USB for Playback
Front USB for upgrade
OPAMP
LME49860
OPAMP
LME49860
SE-BAL
SE-BAL
mute
mute
SUB
BAL
SE
P
N
BAL
SUB
SE
mute
mute
mute
SUB
BAL
SE
BAL
SUB
SE
P
N
Bal out swit ch to SE-BAL convertor output
When 2.1 mode was selec ted
DDFA output 0.1 sig nal at ch2,ch3,ch4,ch5
Bal out swit ch to main output, SUB out muted
When 2.0 mode was selec ted
DDFA output negativ e sig nal at ch2,ch3,ch4,ch5
REF
PW M
OUT
CLOCK
24.576M
IIS
DI T
1/2
Divider
Linear
Regulator
15V
11V
Swit ching
Conver to r
844K
422K
+15V
-15V
LM337
LM317
+18V
-18V
ZLDO1117
10V
R8V
Low noise
Regulater
R3.6V
Analog supply
TPS5450
DC/DC
TPS54327
LDO
LDO
LDO
ZLDO1117
LDO
5VD
15V
3.3VD
3.3VC
1V8
R1V8
15V
Digital supply
LDO
ASM1117
3.3VS
5VS
13V5
24V
24V
24V
13V5
3.3VD
3.3VD
3.3V
'
3.3VD
3.3VD
R3.6V
R3.6V
24V
ZLDO1117
ZLDO1117
ZLDO1117
3V3D
3V3C
1V8D
1V8C
5VR
5VR
15V
12.5V
12.5V
12.5V
12.5V
POWER SWITCH
L
N
6.3AT/250V
STBY SMPS
MAIN SMPS
24V 5A
5V 1A
LO
G
IC
B
U
FFE
R
TRIG OUT
TRIG IN
IR IN
RS232
GPIO
232 ; IR ; TRIG
Low leak ag e SMPS
5VS
24V
STBY
SPI
SPI/I IC
GPIO(mute)
GPIO
GPIO
SPI
CS8416
Plug in detect
46
pi
n
b
o
a
rd
-board
s
oc
k
e
t
IIS4
INT4
IIC
GPIO 16-19
FPu s b
SPI
A12V EN
E-GPO
ANAL
O
G
12.5V
13V5
SN75157
IIS SRC
7WV17
Fro nt pan el
Type A
USB
5VD
TOUCH SCREEN
MICROTIPS
CY8CMBR2044
TOUCH
STANDBY KEY
IR
3V3
5VS
VOLUME
TL1963A
SPI
CONTROLLERS
LED
PIC32MX695
DISPLAY MCU
DC/DC
IS61WV25616B
ST AT IC RAM
I/O
BUS SWITCH
LDO
Bl ueO S card
SPDIF
RX
ANTENNA
MINI USB
Ethernet
USB HUB
Applic atio ns
Processors
MCIMX535
USB2514
Hub Controller
74
L
V
C
2
5
7A
LAN8720
BTM511
BUS SW
USB SWITCH
TS3USB3000
Front USB for Playback
Front USB for Playback
BUS SW
CB3Q3305 BUS SW
BUS SW
7WV17
7WV17
CB3Q3305
7WV17
BUS SW
CB3Q3305
7WV17
BUS SW
IIS BUFFER
NC7SV157
3.3VD
GPIO
IIS Main2
IIS Main3
I I S M ain2
I I S M ain3
SN74CB3Q3253
74LV244
ATSAM3N00A
Summary of Contents for M12
Page 1: ...NAD SERVICE MANUAL DIGITAL PREAMP DAC DIGITAL PREAMP DAC...
Page 6: ...6 Wiring diagram...
Page 29: ...1 AUDIO BOARD 29 PCB LAYOUT Top Layer Bottom Layer...
Page 30: ...2 MDC BOARD 30 Top Layer Bottom Layer...
Page 31: ...31 3 MDC DIGTAL IO BOARD Bottom Layer Top Layer...
Page 32: ...32 4 232_TRIG BOARD Bottom Layer Top Layer...
Page 33: ...33 5 BOOTLOAD BOARD Bottom Layer Top Layer 6 ENCODER BOARD Bottom Layer Top Layer...
Page 34: ...34 7 TOUCH KEY BOARD Bottom Layer Top Layer 8 LED BOARD Bottom Layer Top Layer...
Page 35: ...35 9 FPP BOARD Bottom Layer Top Layer...
Page 36: ...36 10 USB XMOS BOARD Bottom Layer Top Layer...
Page 37: ...37 11 PSU BOARD Top Layer Bottom Layer...
Page 38: ...38 12 ANA BOARD Top Layer Bottom Layer...
Page 39: ...39 13 PHONO BOARD Top Layer Bottom Layer...
Page 40: ...4 14 HTRM2 BOARD Top Layer Bottom Layer...
Page 68: ...68...
Page 70: ...70...