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• Waveforms
– BD Section –
1 IC101 @§ (RFDC), #§ (RFAC) 200 mV/DIV, 500 ns/DIV
+0.25
1.2
Vp-p
–0.20
2 IC101 @¶ (TE) 100 mV/DIV, 500 ns/DIV
Approx. 250 mVp-p
3 IC101 @ª (FE) 50 mV/DIV, 500 ns/DIV
Approx. 100 mVp-p
4 IC101 $∞ (LRCK)
5.2 Vp-p
22.7 µ s
5 IC101 $¶ (BCLK)
5.2 Vp-p
474 ns
6 IC101 %£ (XPLCK)
5.2 Vp-p
128 ns
7 IC101 %∞ (RFCK)
5.2 Vp-p
136 µ s
8 IC101 (§ (MDP)
2.3 Vp-p
7 ns
9 IC351 #¡ (XIN)
4 Vp-p
4 MHz
– MAIN Section –
0 IC302 0 (XIN)
2 Vp-p
45 MHz
– 43 –
• IC Block Diagrams
– BD Section –
IC101 CXD2545Q
67 62 63 64
20 19
32K RAM
C4M
68
CLOCK
GENERATOR
C16M
69
PDO
18
VCO1
13
DIGITAL
ADDRESS
EFM
PLL
GENERATOR
VCO0
12
(
)
DEMODULATOR
VARI-PITCH
PCO
33
DOUBLE SPEED
FILI
32
FILO
31
SYNC
D/A
CLTV
34
PROTECTOR
DATA PROCESSOR
RFAC
36
ASYMMETRY
ASYI
38
MUX
CORRECTION
ASYO
39
ASYE
42
WFCK
73
TIMING
GENERATOR 1
SCOR
74
EXCK
76
ERROR CORRECTOR
SUBCODE
SBSO
75
P-W
PROCESSOR
EMPH
72
SUBCODE
SQCK
78
Q
SQSO
77
PROCESSOR
MON
95
CLV
FSW
94
PROCESSOR
MDP
96
TIMING
MDS
97
GENERATOR 2
18-TIMES
NOISE
OVERSAMPLING
SERVO
SHAPER
FILTER
MICRO PROGRAM
INTERFACE
MIRR
DFCT
FOK DETECTOR
RFDC
26
SERVO DSP
TE
27
SWITCH
A/D
SE
28
&
SLED SERVO
CONVERTER
BUFFER
FE
29
TRACKING
VC
30
SERVO
FOCUS SERVO
25
24
14
16
17
21 40 23 35
41 90 15 65
81
22 37 44 45 66 82 83 84 85 98 99
IC181 TA7256P
+
+
–
–
1 2
3 4 5 6 7
8 9 10
43 PSSL
PRIORITY
SERIAL
ENCODER
PARALLEL
16
61-46
DA01-16
PROCESSOR
79 MUTE
PEAK DETECTOR
DIGITAL OUT
71 D OUT
70 MD2
86 DATA
CPU INTERFACE
88 CLOK
87 XLAT
SERVO
AUTO
80 SENS
SEQUENCER
89 COUT
91 MIRR
92 DFCT
93 FOK
PWM GENERATOR
2
3, 100
SFON, SFDR
SLED PWM
2
GENERATOR
1, 2
SRON, SRDR
2
4, 7
TFDR, TFON
TRACKING PWM
2
GENERATOR
5, 6
TRON, TRDR
2
8, 11
FFDR, FFON
FOCUS PWM
2
GENERATOR
9, 10
FRON, FRDR
– 44 –
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