CXD2027Q Datasheet | Sony Semiconductor Solutions

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 Sky Port 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 : 90d B (Typ.) Distortion : 0.011% (Typ.) CPU interface - I2C bus Descrambler interface - COATEC system, Sky Port 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...