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CXD3048R Datasheet(PDF) 1 Page - Sony Corporation |
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CXD3048R Datasheet(HTML) 1 Page - Sony Corporation |
1 / 205 page – 1 – E02653A37 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. CXD3048R 120 pin LQFP (Plastic) CD Digital Signal Processor with Built-in Digital Servo + Shock-proof Memory Controller + Digital High & Bass Boost 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 Shock-proof Memory Controller Block • Supports an external 4M-bit/16M-bit DRAM • Time axis-based data linking • ADPCM compression method (uncompressed/4 bits/ 6 bits/8 bits) Digital Filter, DAC and Analog Low-pass Filter Blocks • Digital dynamic bass boost and high boost Bass Boost: 4th-order IIR 24dB/Oct +10dB/+14dB/+18dB/+22dB High Boost: Second-order IIR 12dB/Oct +4dB/+6dB/+8dB/+10dB • Independent turnover frequency selection possible Bass Boost: 125Hz/160Hz/200Hz High Boost: 5kHz/7kHz • Digital dynamics (compressor) Volume increased by +5dB at low level • 8 × oversampling digital filter (attenuation: 61dB, ripple within band: ±0.0075dB) • Digital signal output possible after boost • Serial data format selectable from (output) 20 bits/ 18 bits/16 bits (rearward truncation, MSB first) • Digital attenuation: – ∞, –60 to +6dB, 2048 steps (linear) • Soft mute • Digital de-emphasis • High-cut filter Applications CD players Structure Silicon gate CMOS IC Absolute Maximum Ratings • Supply voltage VDD, AVDD Vss – 0.5 to +3.5 V • Input voltage VI Vss – 0.3 to VDD + 0.3 V • Output voltage VO Vss – 0.3 to VDD + 0.3 V • Storage temperature Tstg –55 to +150 °C • Supply voltage difference AVSS – VSS –0.3 to +0.3 V AVDD – VDD –0.3 to +0.3V (AVDD < 1.7V) AVDD – VDD –0.3 to +1.0V (AVDD = 1.7 to 2.7V) Recommended Operating Conditions • Supply voltage VDD, AVDD0, 3, XVDD 1.7 to 2.7 V AVDD1, 2, DVDD VDD to 2.7 V • Operating temperature Topr –20 to +75 °C I/O Pin Capacitance • Input capacitance CI 7 (max.) pF • Output capacitance CO 7 (max.) pF Note) Measurement conditions VDD = VI = 0V fM = 1MHz |
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