Description
The CXD3021R is a digital signal processor LSI for CD players. This LSI incorporates a digital servo, digital filter and 1-bit DAC.

Features
• All digital signal processing during playback is performed with a single chip
• Highly integrated mounting possible due to a builtin RAM

Digital Signal Processor (DSP) Block
• Playback mode supporting CAV (Constant Angular Velocity)
• Frame jitter free
• 0.5× to 32× continuous playback possible with a low external clock
• Allows relative rotational velocity readout
• Wide capture range playback mode
• Spindle rotational velocity following method
• Supports 1× to 32× playback by switching the built-in VCO
• The bit clock, which strobes the EFM signal, is generated by the digital PLL.
• Digital PLL master clock can be set to 2/3 the conventional one.
• EFM data demodulation
• Enhanced EFM frame sync signal protection
• Refined super strategy-based powerful error correction C1: double correction, C2: quadruple correction Supported during 32× playback
• Noise reduction during track jumps
• Auto zero-cross mute
• Subcode demodulation and Sub-Q data error detection
• Digital CLV spindle servo (built-in oversampling filter)
• 16-bit traverse counter
• Asymmetry correction circuit
• CPU interface on serial bus
• Error correction monitor signal, etc. output from a new CPU interface
• Servo auto sequencer
• Fine search performs track jumps with high accuracy
• Digital audio interface outputs
• Digital level meter, peak meter
• Bilingual compatible
• VCO control mode
• Digital Out can be generated from the audio serial inputs.
• Supports three types of DA interface (48 bits/64 bits/32 bits)
• DSP, servo and DAC blocks support sleep mode.