Description
The CXD3048R is a digital signal processor LSI for CD players. This LSI incorporates a digital servo, high & bass boost, shock-proof memory controller, 1-bit DAC and analog low-pass filter. 

FEATUREs
• All digital signal processing during playback is
   performed with a single chip
• Highly integrated mounting possible due to a built-in RAM

Digital Signal Processor (DSP) Block
• Supports CAV (Constant Angular Velocity) playback
• Frame jitter free
• 0.5× to 4× speed continuous playback possible
• Allows relative rotational velocity readout
• Wide capture range playback mode
• Spindle rotational velocity following method
• Supports 1× to 4× speed playback
• Supports variable pitch playback
• The bit clock, which strobes the EFM signal, is
   generated by the digital PLL.
• EFM data demodulation
• Enhanced EFM frame sync signal protection
• Refined super strategy-based powerful error correction
   C1: double correction, C2: quadruple correction
   Supported during 4× speed playback
• Noise reduction during track jumps
• Auto zero-cross mute
• Subcode demodulation and subcode-Q data error
   detection
• Digital spindle servo
• 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
• CD TEXT data demodulation
• Digital Out can be generated from the audio serial
   input. (also supported after shock-proof and digital
   bass boost processing, subcode-Q addition function)

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
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