37
37
MDS-NT1
6-2.
BLOCK DIAGRAM – MAIN Section –
11
10
7
3
2
4
8
7
6
5
39
40
42
35
1
NET MD SECURITY,
DIGITAL SIGNAL PROCESSOR,
USB INTERFACE
IC901
USB
CN4
A
B
C
5
12
11
10
9
CN200
57
56
51
53
52
3
73
74
5
3
4
38
84 82 81
93
37
76 75
77
58
47
46
5
3
7
1
2
X550
12MHz
13
11
X301
10MHz
36
17
MUTING
Q170, 270
HEADPHONE
MUTING
Q451
MUTING
CONTROL SWITCH
Q100
MIX AMP
IC501 (1/2)
MIX AMP
IC501 (2/2)
PHONES
ANALOG OUT
PHONE
LEVEL
J180
HEADPHONE AMP
IC503
BUFFER
IC550
Net MD
D732
D751
(PLAY)
LED DRIVE
Q732
LED DRIVE
Q751
D731
(REC)
LED DRIVE
Q731
B
/
>
S726
95
10
x
/
Z
S702
RESET
SIGNAL
GENERATOR
IC420
RV301
+3.3V
REGULATOR
IC402
+3.3V
REGULATOR
IC933
SWITCHING
REGULATOR
IC400
–5V
REGULATOR
IC451
+5V
REGULATOR
IC450
VOLTAGE
DETECT
IC401
SWITCHING
Q400
–
+
DC IN 9V
J400
THP400
+9V
DADTI, XBCKI,
LRCKI, DIN1
DADT, BCK,
LRCK, FS256
SWDT, SCLK
DADTI
XBCKI
DIN1
DSPIF3
DSPIF2
DSPIF0
DSPCLK
DP
DM
USBSW
USBEN
CPUINT
CPUXCS
CPUCK
CPUSI
CPUSO
PLLSW
RESET
UINT
UCS
UCLK
USO
USI
UPLLSW
URESET
XTAL
EXTAL
D901
2
3
1
D/A CONVERTER
IC505
SDTI
BICK
LRCK
CDTI
CCLK
SWDT
SCLK
CSN
MCLK
DADT
BCK
LRCK
FS256
PDN
AOUTL+
AOUTL–
AOUTR+
AOUTR–
XIN
XOUT
NETMD_INT
NETMD_CS
NETMD_CLK
NETMD_SO
NETMD_SI
ADA_LATCH
ADA_RESET
NETMD_PLLSW
NETMD_RESET
NETMD_VBUS
UNIT
UCS
UCLK
USO
USI
UPLLSW
URESET
MUTE
P. DOWN
LED1
LED2
LED3
KEY1
KEY0
S. RESET
SYSTEM CONTROLLER
IC301 (2/2)
D301
LIN
RIN
LOUT
ROUT
MUTE
BT420
LITHIUM
BATTERY
SYS+3.3V
BAK+3.3V
D422
D421
+5V
BD+3.3V
A+5V
A–5V
• SIGNAL PATH
: PLAY
: REC
8
LRCKI
DSPIF2
+2.6V
REGULATOR
IC926
D+2.6V
USB+
USB–
VBUS
(Page 36)
(Page 36)
(Page 36)