CXD2027Q/R View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

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CXD2027Q/R

DBS Audio Signal Processor

Sony Semiconductor 

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.

CXD2027Q

64 pin QFP (Plastic)

CXD2027R

80 pin LQFP (Plastic)

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

4.75 to 5.25 V

–20 to +75 °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.

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E94808-ST

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