Sanyo CWM-460 Service Manual page 12

IC BLOCK DIAGRAM & DESCRIPTION
IC501 LC78622 (Digital Signal Processor)
EFMO VV
DD
9
1
Slice level
DEFI
Control
10
EFMIN
Syncrnous Detect
22
FSEQ
EFM Demodulation
12
CLV+
CLV
Digital Servo
13
CLV-
14
V/P
PW 49
51
SBCK Subcode Dxract
47 QCRC
SBSY
SFSY 50
63
CS
WRQ 53
55
SQOUT
CQCK 57
COIN 56
Servo Commander
54
RWC
15 16 17 20 19 58
HFL TES TOFF JP- JP+ RES
IC601 LA9240M (Servo Signal Processor)
VV PDO ISET FR PCK TAI
SS
6 4
3 5 7 21 2
VCO Clock Oscillator
& Clock Control
C1 C2 Error Detect &
Correct Control Flag
General Ports
18 24 25 26 27 28 29 48
TGL CONT1 CONT3 CONT5 EMPH EFLG
CONT2 CONT4
Vcc1 LDS LDD BH1 PH1
64 63 62 61
APC
FIN2 1
VCA
2
FIN1
I/V
3
E
BAL VCA
4
F
5
TB
TE
TE- 6
TE 7
8
TESI
T.SERVO & T.LOGICK
9
SCI
TH 10
11
TA
TD- 12
F.SERVO & F.LOGICK
13
TD
14
JP
TO 15
FD 16
17 18
FD- FA
TEST2 TEST4
TST11
TEST1 TEST3 TEST5
59 64 11 32 33 62 23 8
2KÅ~8bit
RAM
Interpolalation Mute
Quadruple Over Sampling
X'tal Root
Timing Generator
60 61 46 52 45 44 43 39 41 42
16M 4.2M FSX XIN XV RV
DD DD
XV XOUT RV MUTER
SS SS
LF2 VR REF1 Vcc2 FSS DRF CE DAT CL CLK
60 59 58 57 56 55 54 53
REF
RF DET
É -com
INTER FACE
SPINDLE SERVO
19 20 21 22 23 24 25 26 27
FA- FE FE- AGND SP SPI SPG SP- SPD SLEQ
- 11 -
RAM Address
Generatorl
Billingual
Digital Out
Digital Attenuator
Digital Filter
1bit DAC
L.P.F
40 37 35 38 36
RCHO LCHO MUTEL LV
DD
LV
SS
DEF
52 51 50 49
48 NC
47 TBC
46 FSC
DGND
45
44 SLI
SLC
43 SLC
42 RFS-
RF Amp
41 RFSM
40 CV+
39 CV-
38 SLOF
37 HFL
TES
36
35 TOFF
34 TGL
33 JP+
SLED SERVO
28 29 30 31 32
SLD SL- SL+ JP-
30 C2F
31 DOUT
(NC)
34