04
5
37
6 163 160 148
88
48 49
65
15
51
52
58
62
61
59
64
25
28
29
31
32
38
33
36
DES
CONTROL
108,107,105,104,
102,101,99,98
93,92,90,89,87,86,82,
80,77,76,74,73,71-68
AUDIO
INTERFACE
CLOCK
GENERATOR
&
RESET
CIRCUIT
DSP CORE
DATA
RAM
&
ROM
PROGRAM
ROM
MICRO
COMPUTER
INTERFACE
ATRAC
DATA
INTERFACE
20 23 24
1
12
9
5
6
4
SERIAL
INPUT
INTERFACE
8-TIMES
OVER •
SAMPLING
DIGITAL
FILTER
(MULTI
FUNCTION)
CLOCK
MANAGER
BCKIN
XTI
LRCIN
DIN
MODE
CONTROL
MULTI-LEVEL
MODULATOR
CR LPF
AMP
18 17 16
15
31 32 28
19
72
80
144 145 147
2 3
97
6 8
9 11
13
1
1
2
3
4
5
EXTAL
FS512F
LRCK
XBCK
ACLK
ACDO
XABS
ACDI
XARQ
DODT
LRCK
BCK
ACLK
ACDI
XABS
ACDO
XARQ
VOUTL
VOUTR
RESET
MT
SW
22
21
BST
SW
BEEP
SWITCH
Q304
BB1/2
SWITCH
Q301
16
17
MTSW
INA
INB
BSTSW
24
8
4
85
2
9
10
11
12
23
15
VREF
BEEP
i
J303
17 18 19
5
6
7
X706
32.768kHz
2
3
1
OSCILLATION
CIRCUIT
FREQUENCY
DIVISION,
TIMING
PRODUCTION
SERIAL
INTERFACE
COMPARATOR
XIN
XINT
XOUT
INT
REGISTER
SIO
XSCK
CS
PC22 S CLKOFF
XCS1 S XCS
S XDREQ
S XDACK
XIRQ0 S XIRQ
PD16 S XRST
PB7 G SCLK
PB6 G SWDT
PB17 G XLAT
PD27 G XRST
PE12 DA ML
PE13 DA MC
PE15 DA MD
PD21 DA XRST
PD19 HP MUTING
PE17 HP BBON
PF6 HP BB1/2
PD18 HP BEEP
PA8 RTC CE
PA4 RTC CLK
PA0 RTC SIO
149
84
162
BEEPOUTA
BEEPOUTB
BEEPIN
REALTIME CLOCK
IC706
D/A CONVERTOR PROCESSOR
IC301
HEADPHONE AMP
IC302
VREF
LPF1
BSTNF1
LPF2
OUTA
OUTB
BSTNF2
45
43
X702
22.5792MHz
XCS
XRD
AB8
AB0-AB7
A0-A7
DB0-DB15
D0-D15
XWRH
XWRL
XDREQ
XDACK
XIRQ
XRST
SCLK
FS256
BCK
XTLO
XTLI
SWDT
XLAT
ATRAC3 ENCODER/DECODER
IC703
MAGIC GATE IC
IC702
ATRAC
INTERFACE
FIFO0
FIFO1
16
8
16
16
ML/MUTE
MC/DM1
MD/DM0
RSTB
PWB
PWA
ADD
BST
CLOCK
GENERATOR
SYSTEM CONTROL
IC701(2/3)
CPU INTERFACE
• SIGNAL PATH
: DIGITAL
: ANALOG
4-3. BLOCK DIAGRAM — AUDIO SECTION (2/2) —
NW-MS7
– 21 –
– 22 –
(Page
20)