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MN662785TBUC Datasheet

  • MN662785TBUC

  • LSI FOR COMPACT DISC/CD ROM PLAYER

  • 89頁

  • PANASONIC

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LSI 6 for C 5T pa C
MNs 6278omBUct Disc/CD-RO M Player
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)
銉籉
ocus (Fo), tracking (Tr), and traverse (TRV) servos
銉籄
utomatic adjustment functions (Fo/Tr gain, Fo/Tr offset, Fo/Tr balance)
銉?/div>
On-chip PWM for drive output
銉籔
rovided with a countermeasure for dropout
銉?/div>
Provided with anti-shock function
銉籔
rovided with track cross detection function
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(Digital signal processing)
銉籆
ontaining DSL and PLL
銉籔
rovided with a frame synchronous detection/protection/interpolation
銉?/div>
Subcode data processing
Q-data CRC check
On-chip Q-data register
On-chip CD-TEXT-data register
銉籆
IRC error correction
C1 decoder錛歞ouble error correction鈥?/div>
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C2 decoder錛歵riple error correction
On-chip de-interleaving 16K RAM
銉籄
udio data interpolation processing
4-sampling linear interpolation and previous value hold
銉籗
oft muting
銉籇
igital attenuation (256 levels) (-鈭? -48 dB to 0 dB, 256 levels)
銉籗
oft attenuation (256 levels) (-鈭? -48 dB to 0 dB, 256 levels)
銉籇
igital audio interface (EIAJ format), IEC format
銉籆
ompatible with digital audio interface when anti-shock memory control is turned on.
銉籆
ompatible with bilingual operation when anti-shock memory control is turned on.
(Spindle motor servo)
銉籆
LV digital servo
銉籔
rovided with servo gain selection function
銉籔
rovided with shaft loss compensation setting function
銉籔
rovided with forced acceleration/deceleration output level setting function
Public ation date: J une 2002
SDD00026AEM
1

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