6

µµµµPC1857A

CONTENTS

1.

PIN FUNCTIONS..............................................................................................................................

7

2.

ATTENTIONS....................................................................................................................................

14

3.

I

2C BUS INTERFACE...................................................................................................................... 15

3.1

Data Transfer..........................................................................................................................................

15

3.1.1

Start condition ............................................................................................................................

15

3.1.2

Stop condition ............................................................................................................................

16

3.1.3

Data transfer ..............................................................................................................................

16

3.2

Data Transfer Format.............................................................................................................................

17

3.2.1

1-byte data transfer ....................................................................................................................

18

3.2.2

Successive data transfer............................................................................................................

18

3.2.3

Acknowledge..............................................................................................................................

18

4.

EXPLANATION OF EACH COMMAND ........................................................................................

19

4.1

Subaddress List .....................................................................................................................................

19

4.2

Initialization ............................................................................................................................................

20

4.3

Surround Function.................................................................................................................................

20

4.4

Explanation of Each Command ............................................................................................................

21

4.4.1

Mute ...........................................................................................................................................

21

4.4.2

Output selection .........................................................................................................................

21

4.4.3

Surround mode ..........................................................................................................................

22

4.4.4

Surround effect ..........................................................................................................................

23

4.4.5

Mix .............................................................................................................................................

23

4.4.6

Automatic increment ..................................................................................................................

24

4.4.7

Volume level ..............................................................................................................................

25

4.4.8

Balance ......................................................................................................................................

25

4.4.9

Bass level...................................................................................................................................

26

4.4.10 Treble level ................................................................................................................................

26

5.

ELECTRICAL CHARACTERISTICS ...............................................................................................

27

6.

CHARACTERISTIC CURVES..........................................................................................................

33

6.1

Frequency Characteristic in Each Mode..............................................................................................

33

6.2

Control Characteristic ...........................................................................................................................

36

6.3

I/O Characteristic ...................................................................................................................................

38

7.

PACKAGE DRAWING .....................................................................................................................

39

8.

RECOMMENDED SOLDERING CONDITIONS .............................................................................

40