CXD3018Q/R
CD Digital Signal Processor with Built-in Digital Servo and DAC
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Description
CXD3018Q
CXD3018R
The CXD3018Q/R is a digital signal processor LSI
for CD players. This LSI incorporates a digital servo,
digital filter, zero detection circuit, 1-bit DAC and
analog low-pass filter on a single chip.
100 pin QFP (Plastic)
100 pin LQFP (Plastic)
Features
Digital Signal Processor (DSP) Block
• Playback mode which supports CAV (Constant
Angular Velocity)
• Frame jitter free
• 0.5× to 4× continuous playback possible
• Allows relative rotational velocity readout
• Supports spindle external control
• Wide capture range playback mode
• Spindle rotational velocity following method
• Supports 1× speed to 4× speed playback
• 16K RAM
Applications
CD players
Structure
Silicon gate CMOS IC
Absolute Maximum Ratings
• Supply voltage VDD
• Input voltage
• EFM data demodulation
–0.5 to +4.6
–0.5 to +4.6
(VSS – 0.5V to VDD + 0.5V)
–0.5 to +4.6
(VSS – 0.5V to VDD + 0.5V)
V
V
• Enhanced EFM frame sync signal protection
• SEC strategy-based error correction
• Subcode demodulation and Sub Q data error
detection
VI
• Output voltage VO
V
• Digital spindle servo
• Storage temperature
Tstg
• Supply voltage difference
VSS – AVSS
VDD – AVDD –0.3 to +0.3
Note) AVDD includes XVDD and AVSS includes XVSS.
• 16-bit traverse counter
–55 to +150
–0.3 to +0.3
°C
• Asymmetry compensation circuit
• CPU interface on serial bus
• Error correction monitor signal, etc. output from a
new CPU interface
V
V
• Servo auto sequencer
• Digital audio interface outputs
• Digital level meter, peak meter
• CD TEXT data demodulation
Recommended Operating Conditions
• Supply voltage VDD
• Operating temperature
Topr
2.7 to 3.6
V
–20 to +75
°C
Digital Servo (DSSP) Block
• Microcomputer software-based flexible servo control
• Offset cancel function for servo error signal
• Auto gain control function for servo loop
• E:F balance, focus bias adjustment functions
• Surf jump function supporting micro two-axis
• Tracking filter: 6 stages, focus filter: 5 stages
VDD [V]
CD-DSP block
Playback
speed
DAC block
4×
2×
1×
2.7 to 3.6
2.7 to 3.6
2.7 to 3.6
2.7 to 3.6
2.7 to 3.6
Digital Filter, DAC and Analog Low-Pass Filter Blocks
• DBB (digital bass boost) function
• Double-speed playback supported
• Digital de-emphasis
• Digital attenuation
• Zero detection function
I/O Capacitance
• Input pin
CI
9 (Max.)
pF
pF
pF
• Output pin
• I/O pin
CO
CI/O
11 (Max.)
11 (Max.)
Note) Measurement conditions VDD = VI = 0V
fM = 1MHz
• 8Fs oversampling digital filter
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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