MN662785TBUC Datasheet, PDF (1/89 Pages) Panasonic Semiconductor – LSI FOR COMPACT DISC/CD ROM PLAYER

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MN662785TBUC


1. TYPE
Signal processing integrated circuit for CDs (Compact Discs)
2. OVERVIEW
MN662785TBUC is a signal processing IC for CDs. It incorporates optical servo (focus, tracking,
and traverse servos) processing function, digital signal processing function (EFM demodulation and
error correction), digital servo processing function for spindle motor, anti-shock memory control
function for 16M, 4M, or 1M DRAM in compression or decompression mode available to disc
rotation synchronous playback (jitter-free), a digital filter, and D/A converter. All the processing
functions after the head amplifier (RF amplifier) are incorporated into a single chip.
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3. FUNCTIONS AND FEATURES
(Optical servo)
ɾFocus (Fo), tracking (Tr), and traverse (TRV) servos
ɾ Automatic adjustment functions (Fo/Tr gain, Fo/Tr offset, Fo/Tr balance)
ɾ On-chip PWM for drive output
ɾProvided with a countermeasure for dropout
ɾ Provided with anti-shock function
ɾProvided with track cross detection function
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(Digital signal processing)
ɾ Containing DSL and PLL
ɾ Provided with a frame synchronous detection/protection/interpolation
ɾ Subcode data processing
Q-data CRC check
On-chip Q-data register
On-chip CD-TEXT-data register
ɾCIRC error correction
C1 decoderɿdouble error correctionɹɹɹ
C2 decoderɿtriple error correction
On-chip de-interleaving 16K RAM
ɾAudio data interpolation processing
4-sampling linear interpolation and previous value hold
ɾSoft muting
ɾDigital attenuation (256 levels) (-ʿ, -48 dB to 0 dB, 256 levels)
ɾSoft attenuation (256 levels) (-ʿ, -48 dB to 0 dB, 256 levels)
ɾDigital audio interface (EIAJ format), IEC format
ɾCompatible with digital audio interface when anti-shock memory control is turned on.
ɾCompatible with bilingual operation when anti-shock memory control is turned on.
(Spindle motor servo)
ɾCLV digital servo
ɾProvided with servo gain selection function
ɾProvided with shaft loss compensation setting function
ɾProvided with forced acceleration/deceleration output level setting function
Publication date: June 2002
SDD00026AEM
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