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NJW1156

2-CHANNEL ELECTRONIC VOLUME WITH INPUT SELECTOR

Japan Radio Corporation  

NJW1156

s DEFINITION OF I2C REGISTER

♦I2C BUS FORMAT

MSB

LSB

S

Slave Address

A

MSB

LSB

Select Address

MSB

A

1bit

8bit

1bit

8bit

1bit

S: Starting Term

A: Acknowledge Bit

P: Ending Term

Data

8bit

LSB

AP

1bit 1bit

♦SLAVE ADDRESS

MSB

LSB

1

0

0

0

0

0

1

0

♦CONTROL REGISTER TABLE

The select address sets each function (Volume, Selector).

The auto increment function cycles the select address as follows.

00H¡01H¡02H¡00H

Select

Address

00H

01H

02H

D7

Don’t Care

Don’t Care

Don’t Care

D6

D5

TEST

BIT

D4

D3

VOL-L

VOL-R

Don’t Care

D2

D1

D0

Selector

♦CONTROL REGISTER DEFAULT VALUE

Control register default values are as follows :

Select

BIT

Address

D7

D6

D5

D4

D3

D2

D1

D0

00H

1

1

1

1

1

1

1

1

01H

1

1

1

1

1

1

1

1

02H

0

0

0

0

0

0

0

0

–7–

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