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Datasheet

Datasheet

BD34704KS2

TSZ02201-0C2C0E100210-1-2

© 2015 ROHM Co., Ltd. All rights reserved.

2015.2.25 Rev.002

www.rohm.com

TSZ22111・15・001

(4) Table of Control Data

←Input Direction

Select

Address

No.

D15

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

D2

D1 D0

0

Input Selector (MAIN)

REC

ON/OFF

0

0

SUB

ON/OFF

1

0

0

Chip

Select

00

1

Input Selector (SUB1)

0

Input Selector (SUB2)

0

0

1

2

Mode Select

FL, FRch

Mode Select

C, SWch

Mode Select

SL, SRch

Mode Select

SBL, SBRch

0

ADC ATT

0

1

0

3

Volume channel

Select

0

1

1

4

PREOUT SEL

MSEL

FRONT

MSEL

C,SW

MSEL

SUR

MSEL

SURB

SB

OUTSEL

SUB

MUTE

0

0

0

Volume

Select2

1

00

6

Mode Select

REC

Mode Select

SUB

0

0

0

0

0

0

0

0

1

10

7

A→B

switch-time

B→A

switch-time

Base

Clock

0

0

System

Reset

0

0

1

1

1

BD3843FS (6ch Selector IC)

*

1

0

0

BD3841FS (9ch Selector IC)

*

1

0

1

BD3812F (2ch volume IC)

*

1

1

*

・

Serial control lines can be shared with BD3471KS2, BD3473KS2 and BD3474KS2.

(In case using the serial bus commonly, please set chip select in “1”)

・

Serial control lines can be shared with BD3843FS(6ch selector IC), BD3841FS(9ch selector IC) and

BD3812F(2chvolume IC).

・

Initialize all data at every turning on the power supply.

※

The Sub Volume is available by L/Rch independence and 0.5dB step.

The Sub volume attenuation is set by address No.3.（A combination of “Volume select2” and “Volume channel select”,

please determine the volume setting channel）

(例)

← Input direction

Address

No.0

L

Address

No.1

L

Address

No.2

L

Address

No.3

FRch

L

Address

No.3

FLch

L

Address

No.3

SBRch

L

Address

No.3

SBLch

L

・

At the second time after turning on the power supply, eight any data to be changed.

(5) Chip Select Setting Table

CHIP terminal condition

D2

0 (LOW)

0

1 (HIGH)

1

BD34704KS2 can be operated in combination with another by setting the CHP terminal.