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MFG:SANYO  Package Cooled:QFP  D/C:0701+  

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Part Number: LC78631E

 

MFG: SANYO

Package Cooled: QFP

D/C: 0701+

Description: The LC78631E is a compact disc D/A signal-processing LSI for CD-ROM drives that provides a variable cl...


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LC78631E General Description


The LC78631E is a compact disc D/A signal-processing LSI for CD-ROM drives that provides a variable clock error correction (VCEC) mode. The LC78631E demodulates the EFM signal from the optical pickup and performs de-interleaving, error detection, error correction, digital filtering, and other processing. The LC78631E includes an on-chip 1-bit D/A converter, and executes commands sent from a control microprocessor.

LC78631E Maximum Ratings

Parameter Symbol Conditions
Ratings
Unit
Maximum supply voltage VDDmax
0.3 to + 7.0
V
Input voltage VIN
0.3 to VDD + 0.3
V
Output voltage VOUT
0.3 to VDD + 0.3
V
Allowable power dissipation Pdmax

470

mW
Operating temperature Topr
30 to +75
Storage temperature Tstg
40 to +125

LC78631E Features

• VCEC support
• Built-in PLL circuit for EFM detection (supports 4*playback)
• Built-in PLL for variable pitch playback (±13%)
• 18KB RAM on chip
• Error detection and correction (corrects two errors in C1 and four errors in C2)
• Frame jitter margin: ±8 frames
• Frame synchronization signal detection, protection, and insertion
• Dual interpolation adopted in the interpolation circuit.
• EFM data demodulation
• Subcode demodulation
• Zero-cross muting adopted
• Servo command interface
• 2fs digital filter
• Digital de-emphasis
• Built-in independent left- and right-channel digital attenuators (239 attenuation steps)
• Supports the bilingual function
• Left/right swap function
• Built-in 1-bit D/A converter (third-order noise shaper, PWM output)
• Built-in digital output circuit
• CLV servo
• Arbitrary track jumping (of up to 255 tracks)
• Variable sled voltage (four levels)
• Six extended I/O ports and 2 extended output ports
• Built-in oscillator circuit using an external 16.9344 MHz or 33.8688 MHz (for 4*playback) element
• Supply voltage: 3.6 to 5.5 V (4.75 to 5.5 V for 4* playback mode)

LC78631E Connection Diagram

LC78631E  Connection Diagram

LC78631E datasheet

LC78631E
PDF/DataSheet Download

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