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3636
MDS-NT1
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM – SERVO Section –
F
C B
D
A
E
I J
J
I
B
A
C
D
E
F
DETECTOR
J
I
A
B
C
D
E
F
LDPD
LASER DIODE
ILCC
PD
OPTICAL PICK-UP BLOCK
(KMS-262E)
AUTOMATIC
POWER CONTROL
Q202, 203
APC
PD
APCREF
AT
AMP
B.P.F.
WBL
ADFM ADIN
ADFG
ABCD
AMP
ABCD
FE
TE
SE
F0CNT
WBL
3T
EQ
COMMAND
SWDT
SCLK
XLAT
RFO
RF AGC
& EQ
AGCI
EQ
RF
RF AMP,
FOCUS/TRACKING ERROR AMP
IC101
TEMP
MORFO
MORFI
3T
WBL
AUX
PEAK
BOTM
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC401
OUT4F
OUT4R
M101
(SPINDLE)
OUT2F
OUT2R
M102
(SLED)
OUT3F
OUT3R
OUT1F
OUT1R
FCS+
FCS–
TRK+
TRK–
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
IN4R
IN4F
IN2F
IN2R
IN3F
IN3R
IN1F
IN1R
MOD
SPFD
SPRD
APCR
SFDR
SRDR
FFDR
FRDR
TFDR
TRDR
PSB
PWM GENERATOR
FROM CPU
INTERFACE
DIGITAL SERVO
SIGNAL PROCESSOR
IC201 (2/2)
RPWR
AUX1
ABCD
FE
TE
SE
PEAK
BOTM
XLRF
CLRF
DTRF
XLAT
SCLK
SWDT
FILI
PCO
CLTV
FILO
EFMO
ADDT
DATAI
IC201 (1/2)
TX
ASYO
ASYI
RFI
SCTX
HR901
OVER WRITE HEAD
ADFG
F0CN
SPFD
SPRD
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
INTERFACE
DIN0
DOUT
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
IC201 (1/2)
INTERNAL BUS
DADT
XBCK
LRCK
FS256
DADT
BCK
LRCK
FS256
OSCI
OSCO
DQSY
SQSY
XINT
SENS
SRDT
SWDT
SCLK
XLAT
MNT0 (FOK)
MNT1 (SHCK)
MNT2 (XBUSY)
MNT3 (SLOC)
SHOCK
XBUSY
SWDT
SCLK
SWDT
SCLK
XLATCH
SHOCK
XBUSY
D. RESET
SQSY
DQSY
LDON
WRPWR
MOD
XINT
SENSE
SRDT
LOAD-IN
LOAD-OUT
IN1
IN2
VZ
LOADING
MOTOR DRIVE
IC440
M103
(LOADING)
DQ1 – DQ4
A0 – A10
D0 – D3A00 – A10
XOE
XWE
XRAS
XCAS
OE
WE
RAS
CAS
D-RAM
IC152
DIN1
SYSTEM CONTROLLER
IC301 (1/2)
HF MODULE
DADTI, XBCKI,
LRCKI, DIN1
DADT, BCK,
LRCK, FS256
SWDT, SCLK
REFLECT
PROTECT
LOAD-LO
+5V
63
LIMIT-IN
REC-SW
S101
(LIMIT IN)
OUT-SW
• SIGNAL PATH
: PLAY
: REC
S105
(REC)
S103
(OUT)
PLAY-SW
S104
(PLAY)
S102-1
(REFELECT RATE DETECT)
S102-2
(PROTECT DETECT)
–1
S102
–2
XBCKI
LRCKI
DADTI
XBCKI
LRCKI
DIN1
OVER WRITE
HEAD DRIVE
IC181, Q181, 182
11
9
8
4
1
2
48 47
46 40
33
38
37
36
32
35
34
26
28
181716
20
12
3029
5
6
7
10
LASER ON
SWITCH
Q201
LD/PD
AMP
I-V
AMP
I-V
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RF AMP
B.P.F.
PEAK &
BOTTOM
6
8
98
97
15 80 78 79 86 85 76 77
99
27
25
12
10
21
23
19
18
14
15
29
30
3
4
16
MM
M
DIGITAL SERVO
SIGNAL
PROCESS
ANALOG MUX
A/D CONVERTER
SERIAL/PARALLEL
CONVERTER,
DECODER
AUTO
SEQUENCER
V-I
CONVERTER
HF MODULE
SWITCH
Q701 – 704
115
73
72
75
74
67
68
70
91
94
14 13 16 11 10 6 7 8 1 2 3 4
38
37
19
36
34
35
33
26
25
24
28
29
27
32
20
47
46
22
4
5
23
17
ADIP
DEMODULATOR/
DECODER
SPINDLE
SERVO
COMPA-
RATOR
PLL
FILTER
SUBCODE
PROCESSOR
EFM/ACIRC
ENCODER/DECODER
SHOCK PROOF
MEMORY CONTROLLER
ATRAC/ATRACK3
ENCODER/DECODER
CPU
INTERFACE
MONITOR
CONTROL
16
43
48
46
42
18 23 49
XRST
12
30 31 51 55 5429
CLOCK
GENERATOR
42 – 45
2, 3, 24, 25
48 – 56, 59, 60
8 – 12, 15 – 19, 21
C
B
A
65 64
3 6
5
7 2
45
47
53
50
58
56
52
57
59
M
REFERENCE
VOLTAGE SWITCH
Q401, 440
IOP
87
COMPARATOR
IC701
X801
90.3168MHz
OUT1
OUT2
7
6
5
WP
SCL
SDA
EEP-WP
SCL
SDA
EEPROM
IC195
108
100
107
104
105
103
102
109110
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