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M65851FP

Single Chip Karaoke Processor

Renesas Electronics 

M65851FP

Single Chip Karaoke Processor

REJ03F0172-0201

Rev.2.01

Jan 25, 2008

Description

The M65851FP is an LSI that not only contains circuits (echo and key control) necessary for Karaoke but also improves

other peripheral functions.

This IC has full peripheral functions including vocal cut, phase shifter, equalizer, detection of intervals between songs,

digital surround, and Karaoke scoring. It is therefore suitable not only for dedicated Karaoke units but also for radio

cassette tape recorders, TV, VCR, and miniature unit audio systems with Karaoke function.

Features

• Capable of composing echo and key control circuits necessary for Karaoke system with a single chip

• Echo circuit is capable of supporting digital surround by adopting 16 Kbit RAM built-in digital delay

• 17 steps of –8 to +8 for key control (1 step is equivalent to a half tone)

• Karaoke entertainment functions such as Karaoke scoring, vocal cut, equalizer, phase shifter, detection of intervals

between songs, and magic voice functions

• Generation of unnecessary radiation is avoided because clock’s built-in current-control oscillation circuit keeps

clock effects inside the clock

• Built-in automatic reset circuit activated with power turned on

• 5 V single power supply

Recommended Operating Condition

• Supply voltage range: VCC = 4.5 to 5.5 V

• Rated supply voltage: VCC = 5 V

System Configuration

Lch

input

Rch

input

Source

selector

R

L

R+L

MIC

Vocal

cut

ALC

Key control

Score system

Phase

shifter

(ON/OFF)

Music

search

MIX

Lch

output

EQ

MIX

Rch

output

Delay

output

MIC

MIC VOL

MIC

AMP

MIX

Echo/

Surround

Delay VOL

REJ03F0172-0201 Rev.2.01 Jan 25, 2008

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