LC83026E View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC83026E

Digital Signal Processor for Karaoke Systems

SANYO -> Panasonic 

Ordering number : EN5663

CMOS IC

LC83026E

Digital Signal Processor for Karaoke Systems

Overview

The LC83026E provides the audio signal processing

required in karaoke systems, including pitch shift,

microphone echo, voice muting, and simple surround

simulation. It is a special-purpose DSP that implements

karaoke processing with the addition of a single external

256-Kb DRAM. The LC83026E includes on-chip A/D and

D/A converters and supports both digital and analog

inputs and outputs. Its functions and characteristics can be

modified to match the needs of the end product by sending

coefficient data from the microcontroller over a serial

interface.

Features

• Application features

— Pitch shift

The LC83026E supports pitch shifting of ±15

quarter tone steps, or ±1 octave in scale tone units as

specified by command data. This pitch shifting can

be applied either to the music track or to the

microphone input. It is also possible to set up pitch

shifting of ±1 octave in arbitrary steps by setting

coefficient values.

— Microphone echo

The LC83026E can apply echo processing to the

input signal from the microphone A/D converter.

The echo coefficients, including amount of echo and

delay time, can be set.

— Voice muting

The LC83026E provides attenuation of monaural

components in the music signal. This allows CDs

that include vocals to be used for karaoke. The voice

muting function is turned on or off by command data

transferred over the serial interface.

— Simple surround

The LC83026E implements a simple surround

simulation function by adding delay components to

the music signal. The LC83026E includes six sets of

simple surround coefficients as preset data, and these

can be selected and switched using command data

transferred over the serial interface. User-original

surround effects can be implemented by setting

coefficients, but the algorithm is fixed.

— Versatile input mixing

The LC83026E supports hybrid mixing of digital

music inputs and analog music inputs for both the

left and right channels to support the processing of a

wide range of disks.

• Audio inputs and outputs

— Inputs: Digital

One system (stereo)

A/D converters Three channels

— Outputs: Digital One system (stereo)

D/A converters Two channels

— A/D converters

Second-order delta-sigma modulation

Three channels

— D/A converters

2× oversampling digital filters + third-order noise

shaper system

Two channels

• Master clock: 768fs

• External memory: Up to two 256K (64K × 4 bits)

external DRAMs can be used.

• Microcontroller input: Synchronous 8-bit serial data

• Power-supply voltage: 5V single-voltage supply

• Package: QFP80E

Package Dimensions

unit: mm

3174-QFP80E

[LC83026E]

SANYO: QIP80E

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

63097HA(OT) No. 5663-1/16

Share Link: