CXD3048R Datasheet, PDF (132/205 Pages) Sony Corporation – CD Digital Signal Processor with Built-in Digital Servo + Shock-proof Memory Controller + Digital High & Bass Boost

CXD3048R
§4-7. Digital CLV
Fig. 4-12 shows the block diagram. Digital CLV outputs MDS error and MDP error signals with PWM, with the
sampling frequency increased up to 130kHz during normal-speed playback in CLVS, CLVP and other modes.
In addition, the digital spindle servo gain is variable.
Digital CLV
CLVS U/D
MDS Error
MDP Error
Measure
Measure
CLV P/S
2/1 MUX
Oversampling
Filter-1
Gain
MDS
1/2
+
Mux
Gain
DCLV
Oversampling
Filter-2
CLV P/S
Gain
MDP
Noise Shape
KICK, BRAKE, STOP
LPWR
Modulation
PWMI
Mode Select
MDP
CLVS U/D: Up/down signal from CLVS servo
MDS error: Frequency error for CLVP servo
MDP error: Phase error for CLVP servo
PWMI: Spindle drive signal from the microcomputer for CAV servo
Fig. 4-12. Block Diagram
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