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m BLOCK DIAGRAM
UM6IIEM—2
ek Ram
BER
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PLTIO2L
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RAM ®~40/0E/WE
JK30I
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HF /DI~D4
HF/RFE
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|
DATA SLICE & PLL
7
TRANSMISSION
MODULE
Lo
TDABBOBT
.
Re
SRF
a
DIGITAL OUT
!
j
PHOTO
DIODE
PLL
MN6625
(OPTICAL)
!
SIGNAL
PROCESSOR
prone
ADJ.
DIGITAL
SIGNAL
PROCESSOR
LM
boos
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PCK
x32!
FPC
mn
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OFFSET
ADJ.
pO
1
1
VR3569
+ 5V mn 5
aaa
——
EcsPc
BLKCK /
ast
STAT
TRON
OMUTE
CLDCK/SUBO
= SMCK = MEMP
FOCUS MOTOR
—_
i
4
;
1
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1
40!
!
C6504
le
|
TCAO372DP
RADIAL
MOTOR
RADIAL
DRIVE
1
|
—
Peg
|
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LASER DIODE
|
i
i
'
1
Ne:
A
|
|
1
PIO/TL
P45/HFD
P24/Si/
POO/STAT
SBO/TRON
P25/
SBTO/POS/P04
OSCI/
P46/
MLD/MCLK /
—
RD
DMUTE
OSC2
EMPH
MDATA
!
'
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ia path
TDASBOST
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p20~23/
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TEROST
ADJ.
RADIAL
ERROR
SIGNAL
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:
bl
Sey
B
3
MNISTI6SPIWS
my
DIV
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MOTOR
DRIVE
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IRQO/XI
CLOSE
>
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PO3/TRAY
SW
P40~44
DGTO~6
DGT7N
IS
SEGONS
F27
P6I
IRQE
RST
TRAY
SW
:
:
:
1
|
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|
1
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|
LOADING
t
MOTOR
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=
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|
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0251,252
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-
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Le
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WIRED
|
POWER SUPPLY CIRCUIT — LM29goTSM
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051,52
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RESET
SIGNAL
!
CONTROE
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:
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GENERATOR
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Sa
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|
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REC
1
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4
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FE
DISPLAY
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ac7V
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!
'
I
OPERATION
CIRCUIT
LOADING
UNIT
Note)
*———> Audio signal.
RAD out
Current output of integrated (Re2 — Re1)
RE dig
:
Radial error digital.
!
P40~44
> Key return signal.
MEMP
:
Deemphasis command (Active High)
;
input currents,
(IRQO/X!)
DGTO~15
:
Key scan signal and FL digit signal.
(EMPH)
BO ~ B3:
:
Control bits for radial circuit.
RE lag
:
Radial error signal for LAG network.
SEGO~8
:
FL segment signal.
P27/P61
:
Synchro rec control
DODS
:
Drop out detector supression.
Si/RD
:
On/off control for laser supply and focus circuit.
MCLK.
|:
Dataclock for MDATA.
IRQ1
:
Remote control signal
DI~D4
:
Photodiode currents,
TL
> Track loss signal.
SUBO
~°
:
Sub-codeQ
data.
384fs (X1)
:
384 fs (16.9344MHz) signal
FE
:
Focus error signal.
Div4
:
Radial error digital devided by four,
CLDCK
:
Data frame clock (7.35KHz).
T™
:
Digital signal output
FE lag
:
Focus error signal for LAG network.
HF/RF
>
Data.
BLKCK
:
Sub-code O data block clock (75 Hz).
DO~7
:
16K RAM data
HE
:
HF output for DEMOD.
DO
:
Drop-out detection signal (Active High).
RST
:
Reset command
(Active Low).
RAMO~10
:
16K RAM address signal
HFD
:
HF detector output for DEMOD.
SRF
'Sliced RF signal.
(RSTB)
;
P25 (MUTE)
:
Muting control signal
(PLLH)
EFM
:
Modulation data.
TRON
:
Tracking servo ON command
(Active Low).
P26
©)
"Leading nietoreenttel dane
HFin
:
HF current input.
PCK
:
PLL extract clock (4.2336MHz).
EC
:
Turntable motor drive signal.
(OPEN/CLOSE)
LM
:
Laser monitor diode input.
FPC
:
PLL frequency comparison signal.
PC
:
Turntable motor ON command
(Active Low).
LO
:
Laser amplifier current output.
STAT
:
Status command for CRC etc.
SMCK
:
System clock (4.2336MHz).
Rel
:
Radial error signal 1 (summation of amplified
DMUTE
:
Data mute command.
(OSC1/OSC2)
currents D3 and D4).
MDATA
:
Mode control data.
OE
:
Read out enable.
Re2
:
Radial error signal 2 (summation
of amplified
MLD
:
Load command
for mode control data
WE
:
Write enable.
(Active Low).
currents D1 and D2).
a
| gee
Se qees.
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