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CXD2586R-1 Datasheet PDF - Sony Semiconductor

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CXD2586R-1 Datasheet PDF : CXD2586R-1 pdf     
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Description
The CXD2586R/-1 is a digital signal processor LSI for CD players. This LSI incorporates the 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 built-in RAM

Digital Signal Processor Block
• Playback mode which supports CAV (Constant
   Angular Velocity)
   • Frame jitter free
   • Half-speed to octuple-speed continuous playback
      possible with a low external clock (only CXD2586R-1
      supports up to octuple speed)
   • Allows relative rotational velocity readout
• Wide capture range playback mode
   • Spindle rotational velocity following method
   • Supports normal-speed, double-speed, quadruple
      speed, sextuple-speed and octuple-speed playback
      (only CXD2586R-1)
• Wide frame jitter margin (±28 frames) due to a
   built-in 32K RAM
• 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
• Octuple-speed (only CXD2586R-1), sextuple-speed,
   quadruple-speed and double-speed playback (digital
   signal processor and digital servo blocks)
• Noise reduction during track jumps
• Auto zero-cross mute
• Subcode demodulation and Sub Q data error detection
• Digital spindle servo (with oversampling filter)
• 16-bit traverse counter
• Asymmetry compensation 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

Digital Servo Block
• Microcomputer software-based flexible servo control
• Servo error signal, offset cancel function
• Servo loop, auto gain control function
• E:F balance, focus bias adjustment function

Digital Filters (DAC and LPF blocks)
• Low-pass filter for DAC
• Digital de-emphasis
• Digital attenuation
• 4fs oversampling filter
• Adopts secondary ∆∑ noise shaper
• LPF for DAC analog output

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