Rev.1.0, May.31.2004, page 1 of 16

Preliminary

M61540FP

6ch Electronic Volume with 5 Input Selector

REJ03F0117-0100Z

Rev.1.0

May.31.2004

Description

M61540FP is an audio signal processor for home audio. This IC contains 6 channel electronic volume, gain control,

input selector and 2 band tone control.

Features

• Electric Volume

6 channel independent Electronic Volume with High Voltage Transistor.

(0 to –99dB/1dBstep, –

∞dB)

• Gain Control

6 channel independent Gain Control (0, 6, 12, 18dB)

• Input Selector

L/R channel 5 Input Selector

• Multi Channel Input 6 channel Input

• Tone Control

Bass: –14 to + 14dB(2dB step),

Treble: –14 to + 14dB(2dB step)

• REC Output

Can use 2 Input for REC Output

• ADC Out

Built-in ADC out

Recommended Operating Condition

Supply Voltage Range

AVCC = 7.0V(typ), AVEE = –7.0V(typ), DVDD = 3.0 to 5.5V

System Block Diagram

MCU I/F

CLOCK DATA

Lout

REC OUT

Lch

Rout

Cout

SLout

SRout

SWout

1

2

3

Input

ATT

Out L

for

ADC

REC OUT

Input

ATT

Tone

Gain Control

VOL GND

GND

Lch Tone RchTone

Bass&

Treble

Bass&

Treble

(4) (5)

(4) (5)

Multi

Cin

Multi

SWin

Multi

SLin

Multi

SRin

Gain Control

Gain Control

Gain Control

Gain Control

Gain Control

Volume

Volume

Volume

Volume

Volume

Volume

Out R

for

ADC

Rch

1

2

3

AVCC

AVEE

DVDD

DGND

Multi

Rin

Multi

Lin