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MDX-CA680/CA680X
2323
4-1. 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
RM
OPTICAL PICK-UP BLOCK
(KMS-241C)
AUTOMATIC
POWER CONTROL
Q302
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
IC302
TEMP
MORFO
MORFI
3T
WBL
AUX
PEAK
BOTM
FOCUS/TRACKING COIL DRIVE,
SPINDLE/SLED MOTOR DRIVE
IC303
OUT4F
OUT4R
M901
(SPINDLE)
OUT2F
OUT2R
M902
(SLED)
OUT1F
OUT1R
OUT3F
OUT3R
FCS+
FCS–
TRK+
TRK–
2-AXIS
DEVICE
(TRACKING)
(FOCUS)
IN4R
IN4F
IN2F
IN2R
IN1F
IN1R
IN3F
IN3R
SPFD
SPRD
APCREF
SFDR
SRDR
FRDR
FFDR
TFDR
TRDR
PSB
PWM GENERATOR
FROM CPU
INTERFACE
DIGITAL SERVO
SIGNAL PROCESSOR
IC301 (2/2)
RECP
ABCD
AUX1
ABCD
FE
TE
SE
PEAK
BOTM
XLRF
CKRF
DTRF
1024FS OSC
IC304
DIGITAL SIGNAL PROCESSOR,
EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER,
ATRAC ENCODER/DECODER
IC301 (1/2)
2
4
6
8
18
16
14
12
11
13
15
17
9
7
5
3
SWDT
SCLK
XLAT
FOK
SHOCK
XBUSY
SLOCK
MD-SO
MD-CKO
MNT0
MNT1
MNT2
MNT3
MD-RST
SQSY
CC-XINT
SENS
MD-SI
EJECT
LOAD
RIN
FIN
OUT1
OUT2
LOADING
MOTOR DRIVE
IC305
M903
(LOADING)
D0 – D3
A00 – A09
OE
WE
RAS
CAS
D-RAM
IC307
MD MECHANISM CONTROLLER
IC501 (1/2)
DATA, BCK,
LRCK, 256FS
DATA
BCK
LRCK
ATT
• SIGNAL PATH
: MD PLAY
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
LD/PD
AMP
I-V
AMP
I-V
AMP
FOCUS
ERROR AMP
TRACKING
ERROR AMP
RF AMP
B.P.F.
PEAK &
BOTTOM
6
8
92
91
88
89
86
85
81
80
83 13 67 65 66 75 74 63 64
82
27
25
21
23
12
10
14
15
19
18
29
30
3
4
16
MM
M
AUTOMATIC
POWER
CONTROL
DIGITAL SERVO
SIGNAL
PROCESS
ANALOG MUX
A/D CONVERTER
SERIAL/PARALLEL
CONVERTER,
DECODER
AUTO
SEQUENCER
V-I
CONVERTER
PEAK HOLD
Q301
10
LEVEL SHIFT
IC502 (2/2)
62 55 5254 51
EXTAL
3159
XTAL
32 2664 27 28 2945
XRST
1, 2, 24, 25
9 – 12, 14 – 18, 5
B
D
EJKT
C
A
7 6
5 4
1 7
6
M
MD-LAT
A-MUTE
67
631156
+3.3V
TEMP
39
X501
10MHz
TH501
CHUCKING
DETECT
(LIMIT)
LIMIT-IN
E-SW
C-SW
57
EJT-OK
LOADING
DETECT
VREF
REFERENCE VOLTAGE
REGULATOR
Q303
LOAD+6V
PLL
FILTER
60
59
62
61
FILI
PCO
CLTV
FILO
100
EFMO
25
ADDT
22
DATAI
15
TX
53
54
57
ASYO
ASYI
RFI
ADIP
DEMODULATOR/
DECODER
78
ADFG
SPINDLE
SERVO
F0CNT
94 93
SPFD
SPRD
SUBCODE
PROCESSOR
SAMPLING
RATE
CONVERTER
DIGITAL
AUDIO
INTERFACE
DIN0
DOUT
DADT
INTERNAL BUS
CLOCK
GENERATOR
XBCK
LRCK
FS256
OSCI
OSCO
CPU
INTERFACE
MONITOR
CONTROL
12
DQSY
11
SQSY
14
XINT
9 8 5 6 7
SENS
SRDT
SWDT
SCLK
XLAT
MNT0
MNT1
MNT2
MNT3
49, 48, 50, 5134 – 31, 36 – 40, 45
D0 – D3A00 – A09
43
47
46
44
22
3
4
23
XOE
XWE
XRAS
XCAS
DIN1
79
16
17
COMPA-
RATOR
EFM/ACIRC
ENCODER/DECODER
SHOCK PROOF
MEMORY CONTROLLER
ATRAC
ENCODER/DECODER
26
28
21
20
19
2927
24
XBCKI
23
LRCKI
1 2 3 4
LEVEL SHIFT
IC502 (1/2)
256FS
X301
45MHz
MD-RST,
DEEMP
66
DEEMP
MD-RST
DEEMP
ON : When a disc loading start
and a disc eject completion
ON : When completion
of a disc loading
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