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1998 Feb 16 2
Philips Semiconductors Product specification
CMOS digital decoding IC with RAM for
Compact Disc
SAA7345
FEATURES
• Integrated data slicer and clock regenerator
• Digital Phase-Locked Loop (PLL)
• Demodulator and Eight-to-Fourteen Modulation (EFM)
decoding
• Subcoding microcontroller serial interface
• Integrated programmable motor speed control
• Error correction and concealment functions
• Embedded Static Random Access Memory (SRAM) for
de-interleave and First-In First-Out (FIFO)
• FIFO overflow concealment for rotational shock
resistance
• Digital audio interface [European Broadcasting Union
(EBU)]
• 2 to 4 times oversampling integrated digital filter
• Audio data peak level detection
• Versatile audio data serial interface
• Digital de-emphasis filter
• Kill interface for Digital-to-Analog Converter (DAC)
deactivation during digital silence
• Double speed mode
• Compact Disc Read Only Memory (CD-ROM) modes
• A single speed only version is available
(SAA7345GP/SS).
GENERAL DESCRIPTION
The SAA7345 incorporates the CD signal processing
functions of decoding and digital filtering. The device is
equipped with on-board SRAM and includes additional
features to reduce the processing required in the analog
domain.
Supply of this Compact Disc IC does not convey an implied
license under any patent right to use this IC in any
Compact Disc application.
QUICK REFERENCE DATA
ORDERING INFORMATION
SYMBOL PARAMETER MIN. TYP. MAX. UNIT
V
DD
supply voltage 3.4 5.0 5.5 V
I
DD
supply current − 22 50 mA
f
xtal
crystal frequency 8 16.9344 or
33.8688
35 MHz
T
amb
operating ambient temperature −40 − +85 °C
T
stg
storage temperature −55 − +125 °C
TYPE
NUMBER
PACKAGE
NAME DESCRIPTION VERSION
SAA7345GP QFP44 plastic quad flat package; 44 leads (lead length 2.35 mm); body
14 × 14 × 2.2 mm
SOT205-1