Description

The CXD3011R-1 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 which supports 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 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

• VCO control mode

• Digital out can be generated from the audio serial inputs.

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 function

• Surf jump and surf brake functions supporting micro two-axis

• Tracking filter: 6 series Focus filter: 5 series

• Servo drive DAC output possible

Digital Filter and DAC Blocks

• Digital de-emphasis

• Digital attenuation

• 8fs oversampling filter

• Adoption of a tertiary ∆∑ noise shaper

• Supports double-speed playback