SANYO LC78602NE Datasheet

Ordering number : EN6021

D1898RM (OT) No. 6021-1/11

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,
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>

• 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 internal
RAM and compensates for ±4 frames of jitter due to
disc speed fluctuations.

• Performs unscrambling and deinterleaving by reordering
the demodulated EFM signal data to the stipulated order.

• Performs error detection and correction and flag
processing (C1: dual errors, C2: dual errors)

• The C2 flags are set based on the C1 flags and the result
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.

• Performs track jump, focus start, disc motor start/stop,
muting on/off, track count, and other operations under
control of the internal control processing block.

• Provides digital outputs.

• Generates D/A converter input signals with continuity
improved by 8× oversampling digital filters.

• Includes on-chip third-order noise shaper delta-sigma
D/A converters with built-in analog low-pass filter.

• Digital deemphasis circuit

• Adopts zero-cross muting.

<Display Block>

• On-chip LED drivers for 7 segment 2-digit display plus
play, program, repeat, and random indicators

<Control Processing Block>

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

• Supports remote controller input.

LC78602NE

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Compact Disc Player DSP with

Built-in Microcontroller

CMOS IC

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.

Features

• Package: 64-pin QFP

• 5-V single-voltage power supply

No. 6021-2/11

LC78602NE

Equivalent Circuit Block Diagram

Package Dimensions

unit: mm

3159-QFP64E

SANYO: QFP64E(QIP64E)

[LC78602NE]

Slice level

control

VCO clock

oscillator

Clock control

Synchronization

detection

EFM demodulation

CLV digital

servo

Subcode

separator QCRC

Servo commander

System control

C1 and C2 error detection

and correction

Flag processing

8 × oversampling

digital filters

RAM address

generator

Interpolation

and muting

Bilingual support circuit

Digital output circuit

Digital

attenuator

Crystal oscillator

circuit

Timing generator

LED driver

1-bit DAC

Pin Assignment

No. 6021-3/11

LC78602NE

Parameter Symbol Conditions Ratings Unit

Maximum supply voltage V

DD

max VSS– 0.3 to VSS+ 7.0 V

Input voltage V

IN

VSS– 0.3 to VSS+ 0.3 V

Output voltage V

OUT

VSS– 0.3 to VSS+ 0.3 V
Allowable power dissipation Pd max 300 mW
Operating temperature Topr –20 to +75 °C
Storage temperature Tstg –40 to +125 °C

Specifications

Absolute Maximum Ratings at Ta = 25°C, VSS= 0 V

Parameter Symbol Conditions

Ratings

Unit

min typ max

Supply voltage V

DD

VDD, XVDD, L/RVDD, VV

DD

4.5 5.5 V

Normal speed playback

V

IH

1 DEFI, 3 V/*5 V, TMOD, *RES, HFL, TES 0.7 V

DD

V

DD

V

High-level input voltage

V

IH

2 *KEYIN 0.8 V

DD

V

DD

V

V

IH

3 EFMIN 0.6 V

DD

V

DD

V

V

IH

4 PUIN, RMTSL1 to 3, REMOTE, CLOSE, DRF 0.8 V

DD

V

DD

V

V

IL

1 DEFI, 3 V/*5 V, TMOD, *RES, HFL, TES 0 0.3 V

DD

V

Low-level input voltage

V

IL

2 *KEYIN 0 0.5 V

DD

V

V

IL

3 EFMIN 0 0.4 V

DD

V

V

IL

4 PUIN, RMTSL1 to 3, REMOTE, CLOSE, DRF 0 0.2 V

DD

V

Input level

V

IN

1 EFMIN: Slice level control 1.0 Vp-p

V

IN

2 XIN: Capacitor coupled input 1.0 Vp-p

Operating frequency range f

OP

EFMIN 10 MHz

Crystal oscillator frequency fX X

IN

, X

OUT

16.9344 MHz

Allowable Operating Ranges at Ta = –20 to +75°C, VDD= 4.5 to 5.5 V, VSS= 0 V

Top view

No. 6021-4/11

LC78602NE

Parameter Symbol Applicable pins Conditions

Ratings

Unit

min typ max

Current drain I

DD

VDD, XVDD, L/RVDD, VV

DD

35 55 mA

DEFI, 3 V/*5 V, EFMIN, TMOD, HFL,

High-level input current

I

IH

1 TES, PUIN, *KEYIN, RMTSL1 to 3, VIN= V

DD

5µA

REMOTE, CLOSE, *RES, DRF

I

IH

2 LASER, FSTA, EFBAL, SP8 VIN= V

DD

250 500 1000 µA

DEFI, 3 V/*5 V, EFMIN, TMOD, HFL,

Low-level input current

I

IL

1 TES, RMTSL2 to 3, REMOTE, *RES, VIN= 0 V –5µA

DRF

I

IL

2 PUIN, *KEYIN, RMTSL1, CLOSE VIN= 0 V –25 –50 –100 µA

EFMO, CLV, TOFF, TGL, JP, LASER,

V

OH

1

FSTA, EFBAL, SP8, FSEQ, PCK,

IOH= –1 mA 0.8 V

DD

V

High-level output voltage SLOF, SLED+, SLED–, EFLG, FSX,

*AMUTE

V

OH

4 DOUT IOH= –12 mA 0.9 V

DD

V

EFMO, CLV, TOFF, TGL, JP, FSEQ,

V

OL

1 PCK, SLOF, SLED+, SLED–, IOL= 1 mA 0.2 V

DD

V

Low-level output voltage

*DIG1, *DIG2, EFLG, FSX, *AMUTE

V

OL

2 *SEG1 to 8, *PROG, *RANDOM IOL= 8 mA 0.2 V

DD

V

V

OL

5 DOUT IOL= 12 mA 0.1 V

DD

V

Output off leakage current

I

OFFH

PDO, CLV, JP, *RANDOM V

OUT

= V

DD

5µA

I

OFFL

PDO, CLV, JP, *RANDOM V

OUT

= 0 V –5µA

R

PU

1

PUIN, *KEYIN, RMTSL1, CLOSE,

100 kΩ

Pull-up resistance

*DIG1, *DIG2, *PROG

R

PU

2 *SEG1 to 8 50 kΩ

Pull-down resistance R

PD

LASER, FSTA, EFBAL, SP8 10 kΩ

Charge pump output current

I

PDOH

PDO R

ISET

= 68 kΩ 64 80 96 µA

I

PDOL

PDO R

ISET

= 68 kΩ –96 –80 –64 µA

Electrical Characteristics at Ta = –20 to +75°C, VDD= 4.5 to 5.5 V, VSS= 0 V

Parameter Symbol Applicable pins Conditions

Ratings

Unit

min typ max

Total harmonic distortion THD+N LCHO, RCHO

1 kHz: 0dB data input

0.025 0.04 %

20kHz low-pass filter used (built-in AD725D)

Dynamic range DR LCHO, RCHO

1 kHz: –60dB data input

86 88 dB

20kHz low-pass filter and A filter used (built-in AD725D)

Signal-to-noise ratio S/N LCHO, RCHO

1 kHz: 0dB data input

90 92 dB

20kHz low-pass filter and A filter used (built-in AD725D)

Crosstalk CT LCHO, RCHO

1 kHz: 0dB data input

80 82 dB

20kHz low-pass filter used (built-in AD725D)

1-Bit D/A Converter Analog Characteristics at Ta = 25°C, VDD= L/RVDD= 5 V, VSS= L/RVSS= 0 V

Note: Measured in normal speed playback mode with the Sanyo 1-bit D/A converter block reference circuit.