LC78601E Sanyo Semiconductor Corporation, LC78601E Datasheet

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LC78601E

Manufacturer Part Number
LC78601E
Description
Manufacturer
Sanyo Semiconductor Corporation
Datasheet

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Ordering number : EN6020
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,
• Slices an input high-frequency signal at an accurate
• Accurately generates not only the reference clock but
• Controls the disc motor speed using a frame difference
• Performs detection, protection, and interpolation for the
• Demodulates the EFM signal, converting it to 8-bit
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.
<Signal-Processing Block>
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.
also all necessary internal timings using an external
16.9344MHz crystal.
signal created based on the reproduced clock signal and
a reference clock.
frame synchronizing signal to assure stable data readout.
symbol data.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
• Separates the subcode data from the EFM signal and
• After applying a CRC check to the subcode Q signal,
• Buffers the demodulated EFM signal data in internal
• Performs unscrambling and deinterleaving by reordering
• Performs error detection and correction and flag
• The C2 flags are set based on the C1 flags and the result
• Performs track jump, focus start, disc motor start/stop,
• Provides digital outputs.
• Generates D/A converter input signals with continuity
• Includes on-chip third-order noise shaper delta-sigma
• Digital deemphasis circuit
• Adopts zero-cross muting.
<Display Block>
• On-chip LCD drivers for 2-digit display plus play,
• On-chip bias voltage generator
<Control Processing Block>
• Key matrix circuit with 4 inputs and 2 outputs for an
• Supports remote controller input.
outputs that data to the internal control processing block.
outputs that signal to the internal control processing
block.
RAM and compensates for ±4 frames of jitter due to
disc speed fluctuations.
the demodulated EFM signal data to the stipulated order.
processing (C1: dual errors, C2: dual errors)
of the C2 processing, and the signal is interpolated or
previous value hold is applied based on the C2 flags.
Dual interpolation is adopted in the interpolation circuit.
Previous value hold is applied if two or more
consecutive errors are indicated by the C2 flags.
muting on/off, track count, and other operations under
control of the internal control processing block.
improved by 8 oversampling digital filters.
D/A converters with built-in analog low-pass filter.
program, repeat, and random indicators
8-key matrix
Compact Disc Player DSP with
Built-in Microcontroller
D1898RM (OT) No. 6020-1/11
LC78601E
CMOS IC

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LC78601E Summary of contents

Page 1

... Ordering number : EN6020 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 ...

Page 2

... VCO clock oscillator Clock control C1 and C2 error detection and correction Flag processing 8 oversampling digital filters System control [LC78601E] SANYO: QFP64E(QIP64E) RAM address generator Interpolation and muting Bilingual support circuit Digital output circuit Digital attenuator Crystal oscillator circuit Timing generator LCD driver No ...

Page 3

... Output voltage Allowable power dissipation Operating temperature Storage temperature Allowable Operating Ranges –20 to +75°C, V Parameter Supply voltage High-level input voltage Low-level input voltage Input level Operating frequency range Crystal oscillator frequency Input voltage LC78601E = Symbol Conditions V max OUT Pd max Topr Tstg = 4 ...

Page 4

... PDOL 1-Bit D/A Converter Analog Characteristics 25°C, V Parameter Symbol Total harmonic distortion THD+N Dynamic range DR Signal-to-noise ratio S/N Crosstalk CT Note: Measure in normal speed playback mode with the Sanyo 1-bit D/A converter block reference circuit. LC78601E = 4 Applicable pins Conditions L/ DEFI, 3 V/*5 V, EFMIN, TMOD, HFL, ...

Page 5

... D/A Converter Output Block Reference Circuit Oscillator element LC78601E Oscillator element: 16.9344 MHz The following oscillator elements are recommended CSA-309 < pF> (Citizen Watch Co., Ltd.) CSA16.93MXZ040 ( pF) (Murata Mfg. Co., Ltd.) CSA16.93MXZ0C3 (built-in capacitor) (Murata Mfg. Co., Ltd.) Analog output Left channel (right channel) ...

Page 6

... RMTSL3 I/O switches to the high level. Therefore, applications that will set this pin high must connect an external pull-up resistor to this pin. LC78601E Function Internal VCO control phase comparator output Internal VCO ground. This pin must be connected PDO output current adjustment resistor connection ...

Page 7

... DD 63 *RES I IC reset input. Applications must set this pin low temporarily when power is first applied. 64 DRF I DRF input. (Connected when an LA9250M is used.) Note: The same potential must be connected to all the power supply pins (V LC78601E Function , VV , L/RV , and Pin state during reset ...

Page 8

... LC78601E No. 6020-8/11 ...

Page 9

... Applications must first apply a reset to this IC after power is applied. Since pin states and register contents that are not defined by the reset operation may change over time from the states in early versions due to long term variations across lots, applications should not depend on these values. LC78601E level, and do not lower the voltage below ...

Page 10

... This IC is specifically designed for use in CD players, and as such its specifications differ from those of general- purpose product standard logic ICs. We recommend system debugging using the end product system itself and adopting failsafe system design if required by the application. LC78601E pin as possible also appropriate to insert capacitors of about DD and ground as low-frequency filters ...

Page 11

... SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of December, 1998. Specifications and information herein are subject to change without notice. LC78601E PS No. 6020-11/11 ...

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