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DP-7010
CIRCUIT DESCRIPTION
7-4. System contro!
COMMAND
ADDRESS
FOCUS CONTROL
TRACKING CONTROL
fou
GAIN
SET
GAIN SET* TG1, TG2 may be set independently.
In the case of ANTI SHOCK = 1 (00011XXX), both TG1, TG2
are inverted when ANT! SCHOCK = "H".
SLED MODE *
TRACKING
MODE *
SERVO ON
SERVO ON
FWD MOVE
FWD JUMP
REV MOVE
REV JUMP
30
DP-7010
CIRCUIT DESCRIPTION
General
The CXD1125QZ
is a digital processing LSI for a Com-
pact Disc player, and has the following functions.
1. Bit clock reproduction by an EFM-PLL circuit
2. EFM data demodulation
4. Powerful error detection and correction
7.
Spindle motor CLV servo
8-1. Block diagram
('Z) scor
Sync
Detector
P00
Lock
|
Med
CLV Servo
frame.
3
sync
elector.
tice
Control
protector/inserter
MDS
Ya
won (2)
vco
taming generator
X°TAL circuit
Taming generotor
cnn
(1?)
Trocking counter
8. 8-bit tracking counter
9. CPU interface with a serial bus
10. Sub code QO register
11.
Digital fitter
12.
Digital audio interface output
Features
©
All digital signals used in playback can be processed using
only a single chip
©
An aperture-correction
digital filter 1s built in
Structure
CMOS IC
Subcode
Subcode
O
Demodulotor
Register
EFM
Demodulotor
Ercor
Getector /corrector
Digitat Fitter
{CX011250Z)
RAM
oddress
Digitet out
generator
(Cx0112602)
31
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