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17 Block Diagram
17.1. CD Servo Diagram
OPTICAL PICKUP
SEMICONDUCTOR
LASER
LASER
POWER DRIVE
B
PHOTO DETECTOR
A
B
B
B
F
B
E
B
IC7002
BA5948FPE2
4 CH DRIVE
F-
16
D3-
[CH3]
FOCUS COIL
F+
15
D3+
T-
18
D4-
[CH4]
TRACKING
COIL
T+
17
D4+
TRV+
14
D2+
M
M7302
[CH2]
SPINDLE
TRV-
13
D2-
MOTOR
SP+
12
D1+
M7301
M
TRAVERSE
[CH1]
MOTOR
SP-
11
D1-
Q7601
B
TO MAIN
CN7002 CN2801
(1/2)
3
20
VREF 26
VREF
IN3
28
LEVEL
SHIFT
IN4
27
LEVEL
SHIFT
IN2 1
LEVEL
SHIFT
IN1 3
LEVEL
SHIFT
MUTE
PC1 4
[CH1]
MUTE
PC2 2
[CH2]
STAT
X7201
81
80
70
69 67 68
79
REGON
3.3V
82
NTEST
3.3V
61
NSRVMONON
72
TIMING
MICRO COMPUTER
NRST
GENERATOR
INTERFACE
[GEN]
[MCIF]
3.3V
47
AVDD2
3.3V
31
AVSS2
SPINDLE
CPU
A, B, C, D, E, F
35~40
A,B,C,D,E,F
[DSV]
42
LD
41
PD
50
ARFFB
ARFF
SERVO
49
ARFOUT
CPU
CMOS
[DSV]
RF
48
ARFDC
AMPLIFIER
45
RFOUT
46
RFIN
CENV
43
CTRCRS
32
OSCIN
VREF
34
VREF
VREF
44
RFENV
MP3/WMA
A/D
DECORDER
CONVERTER
FOP
FS
22
PC
CONVERTER
[FSC]
21
SPOUT
23
TRVP
DIGITAL FILTER
24
TRP
OUTPUT
1bitDAC
PORT
25
FOP
PWM LOGIC
[DF, MASH]
TRP
SRVMON0
29
SRVMON1
30
ANALOG
LOWPASS
TRVP
DIGITAL
OUT
66
57
58
IC7001
SPOUT
MN6627954MA
SERVO PROCESSOR/
DIGITAL SIGNAL
PROCESSOR/
DIGITAL FILTER
D/A CONVERTER
PC
3.3V
55
MLD
MCLK
MDATA
51 53 52 54
55
TXTCK
DSL/PLL/VCO
[DSLPLL]
TXTD
DQSY
EFM DEMODUALTION
SYNC INTERPOLATION
CIRC ECC
(SBCK)
SUBCODE
CDROM ECC
INTERFACE
[DEMECC]
[DEMECC]
(SUBC)
CIRC RAM
(TXNCLDCK)
FLAG
65
BLKCK
71
BUS CONTROL UNIT
PRAMVDD33
20
[BCU]
3.3V
1Mbit
PRAMVSS33
18
DRAM
D0~D15
83~92,94~99
A0~A11
1~7,11~15
BA0,BA1
16,17
NWE,NCAS
8,9
NRAS,SDRCK
10,100
SERIAL OUTPUT
EXT0
62
INTERFACE
EXT1
63
[DAO]
EXT2
64
(LRCK)
(BCLK)
(SRDATA)
76
REGULATOR
(DVDD2)
FILTER
59 56
60
78
26
76
28
93
27
77
3.3V
3.3V 3.3V 3.3V
SA-AK250GCP CD SERVO BLOCK DIAGRAM
SA-AK250GCP
TO MAIN
CN7002 CN2801
4
19
(1/2)
CN7002 CN2801
12
11
CN7002 CN2801
6
17
TO MAIN
(2/2)
CN7002 CN2801
8
15
CN7002 CN2801
7
16
CN7002 CN2801
TO MAIN
5
18
(2/2)
CN7002 CN2801
17
6
CN7002 CN2801
TO MAIN
16
7
(2/2)
CN7002 CN2801
15
8
S7201
REST
SWITCH
TO MAIN
CN7002 CN2801
(1/2)
2
21
CN7002 CN2801
LCH OUT
21
2
TO MAIN
CN7002 CN2801
(2/2)
RCH OUT
19
4
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