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LC78601E

Sanyo Semicon Device
Part Number LC78601E
Manufacturer Sanyo Semicon Device
Description Compact Disc Player DSP with Built-in Microcontroller
Published Mar 22, 2005
Detailed Description Ordering number : EN6020 CMOS IC LC78601E Compact Disc Player DSP with Built-in Microcontroller Overview The LC78601E...
Datasheet PDF File LC78601E PDF File

LC78601E
LC78601E

Overview
Ordering number : EN6020 CMOS IC LC78601E Compact Disc Player DSP with Built-in Microcontroller Overview The LC78601E CMOS IC implements compact disc player signal processing, servo control, LCD display, key input acquisition, and remote controller processing without requiring control by a separate microcontroller.
The basic functions provided include demodulation of the EFM signal from the optical pickup, deinterleaving, error detection and correction, 8× oversampling digital filters, D/A converter (with built-in analog low-pass filter), LCD driver, remote controller processing, key acquisition, and control processing.
Thus this IC can provide excellent cost/performance characteristics when implementing a low-end CD player.
Functions • Implements CD play/pause, disc stop, track selection, fast forward, reverse, repeat mode playback of 1 track or the whole disc, programmed play (setup, play, and clear) of up to 16 tracks, and random repeat play under the control of key input or remote controller input.
• Slices an input high-frequency signal at an accurate level, converts the EFM signal, and generates a clock with an average frequency of 4.
3218 MHz using a PLL circuit that performs a phase comparison with an internal VCO.
• Accurately generates not only the reference clock but also all necessary internal timings using an external 16.
9344MHz crystal.
• Controls the disc motor speed using a frame difference signal created based on the reproduced clock signal and a reference clock.
• Performs detection, protection, and interpolation for the frame synchronizing signal to assure stable data readout.
• Demodulates the EFM signal, converting it to 8-bit symbol data.
• Separates the subcode data from the EFM signal and outputs that data to the internal control processing block.
• After applying a CRC check to the subcode Q signal, outputs that signal to the internal control processing block.
• Buffers the demodulated EFM signal data in interna...


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