lc78602ne Sanyo Semiconductor Corporation, lc78602ne Datasheet

lc78602ne

Manufacturer Part Number

lc78602ne

Description

Compact Disc Player Dsp With Built-in Microcontroller

Manufacturer

Sanyo Semiconductor Corporation

Datasheet

1.LC78602NE.pdf (11 pages)

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Ordering number : EN6021

Overview

The LC78602NE CMOS IC implements compact disc

player signal processing, servo control, LED 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), LED

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.

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.

• On-chip LED drivers for 7 segment 2-digit display plus

• Key matrix circuit with 1 input and 8 outputs for an

• Supports remote controller input.

symbol data.

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.

play, program, repeat, and random indicators

8-key matrix

Compact Disc Player DSP with

Built-in Microcontroller

D1898RM (OT) No. 6021-1/11

LC78602NE

CMOS IC

Related parts for lc78602ne

lc78602ne Summary of contents

Page 1

... Ordering number : EN6021 Overview The LC78602NE CMOS IC implements compact disc player signal processing, servo control, LED 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

... Synchronization detection EFM demodulation CLV digital servo Subcode separator QCRC Servo commander System control LC78602NE Package Dimensions unit: mm 3159-QFP64E [LC78602NE] RAM address generator Interpolation and muting Bilingual support circuit C1 and C2 error detection and correction Flag processing Digital attenuator 8 oversampling digital filters ...

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 LC78602NE = Symbol Conditions V max OUT ...

Page 4

... Total harmonic distortion THD+N LCHO, RCHO Dynamic range DR LCHO, RCHO Signal-to-noise ratio S/N LCHO, RCHO Crosstalk CT LCHO, RCHO Note: Measured in normal speed playback mode with the Sanyo 1-bit D/A converter block reference circuit. LC78602NE = 4 Applicable pins Conditions , ...

Page 5

... D/A Converter Output Block Reference Circuit Oscillator element: 16.9344 MHz Oscillator The following oscillator elements are recommended CSA-309 < pF> (Citizen Watch Co., Ltd.) element CSA16.93MXZ040 ( pF) (Murata Mfg. Co., Ltd.) CSA16.93MXZ0C3 (built-in capacitor) (Murata Mfg. Co., Ltd.) LC78602NE AD725D (Manufactured by Shibasoku Ltd.) Analog output Left channel (right channel) No. 6021-5/11 ...

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. LC78602NE Function Internal VCO control phase comparator output Internal VCO ground. This pin must be connected PDO output current adjustment resistor connection ...

Page 7

... Crystal oscillator circuit power supply DD 63 *RES I IC reset input. Applications must set this pin low temporarily when power is first applied. 64 DRF I DRF input Note: The same potential must be connected to all the power supply pins (V LC78602NE Function , VV , L/RV , and Pin state during reset ...

Page 8

... Sample Application Circuit Note: This circuit is an example of typical connections used with the LC78602NE, but is not a complete circuit, i.e. certain peripheral components and circuits have been omitted. Contact your Sanyo representative for detailed information on this circuit. ...

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. LC78602NE 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. LC78602NE pin as possible also appropriate to insert capacitors of about DD ...

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. LC78602NE PS No. 6021-11/11 ...

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