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CXD2027R Dataheets PDF



Part Number CXD2027R
Manufacturers Sony Corporation
Logo Sony Corporation
Description DBS Audio Signal Processor
Datasheet CXD2027R DatasheetCXD2027R Datasheet (PDF)

CXD2027Q/R DBS Audio Signal Processor For the availability of this product, please contact the sales office. Description The CXD2027Q/R are audio signal processors designed for DBS applications. These LSIs perform all digital processing from QPSK demodulation to analog audio output on a single chip. Features QPSK and PCM demodulators and DAC output are configured on a single chip. Descrambler interface according to the COATEC system and SkyPort system . Functions QPSK demodulator • Carrier, cloc.

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CXD2027Q/R DBS Audio Signal Processor For the availability of this product, please contact the sales office. Description The CXD2027Q/R are audio signal processors designed for DBS applications. These LSIs perform all digital processing from QPSK demodulation to analog audio output on a single chip. Features QPSK and PCM demodulators and DAC output are configured on a single chip. Descrambler interface according to the COATEC system and SkyPort system . Functions QPSK demodulator • Carrier, clock and data regeneration • ALC and VCXO adjustment-free PCM demodulator • Frame sync protection by correlation detection • De-interleaving and descrambling • BCH error correction, range bit error correction • Audio data range control Expansion from 10 to 14 bits in A mode Upper bit majority correction in B mode • Control sign integration correction, chargeable flag integration correction by master frame synchronization • Interface output for external DAC • Digital interface output 1-bit DAC output • Quadruple oversampling filter • Digital de-emphasis circuit • 1-bit stereo DAC with 2nd-order ∆∑ format noise shaper S/N ratio : 90dB (Typ.) Distortion : 0.011% (Typ.) CPU interface • I2C bus Descrambler interface • COATEC system, SkyPort system Mute functions • Error occurrence frequency detection mute • Audio chargeable flag detection mute • Control sign (B7) detection mute Structure Silicon gate CMOS IC Applications TVs, VCRs with built-in BS tuners Absolute Maximum Ratings (Ta = 25°C, Vss = 0V) • Supply voltage VDD Vss – 0.5 to +7.0 V • Input voltage VI Vss – 0.5 to VDD + 0.5 V • Output voltage VO Vss – 0.5 to VDD + 0.5 V • Storage temperature Tstg –55 to +150 °C Operating Conditions • Supply voltage VDD • Operating temperature Topr CXD2027Q 64 pin QFP (Plastic) CXD2027R 80 pin LQFP (Plastic) 4.75 to 5.25 –20 to +75 V °C 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. –1– E94808-ST Block Diagram DATB DATO DSLB DSLA BITI DATA NSYN 13 9 8 BITO 6 5 7 48 4 RT FRAME SYNC DE-SCRAMBLER BCH DECODER (63, 56) SHIFTER & RANGE BIT BCH (7, 3) 71 ADIN 73 ADC DATA RECOVERY RB 76 GR 77 MASTER FRAME SYNC DE-INTERLEAVER 4 kBIT-RAM 10 → 14 BIT DATA EXPAND MAJORITY ERROR CORRECTION MUTE SIGNAL GENERATOR 54 MUTE ALCO 67 ALC SIGNAL GENERATOR CONTROL WORD INTEGRAL CORRECTION 8TH RANGE BIT INTEGRAL CORRECTION –2– AUDIO DATA INTERPOLATOR TIMING GENERATOR I2C BUS I/F DIGITAL INTERFACE 11 14 47 50 51 38 15 CLOCK GENERATOR 28 LPO PHAA 66 DAC1 DIGITAL FILTER DE-ENPHASIS DAC2 32 RPO 25 LNO CARRIER RECOVERY M23I 65 SYSTEM CLOCK GENERATOR 35 M23O 64 RNO 43 AUD 44 AUDIO INTERFACE 45 BCLK 46 F256 LRCK PHAB 58 CLOCK .


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