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MHB789

C22

C23

BPU

32

C21

CW

31

C20

TW

30

VCC

41

C19

VCAP

28

AGND

36

Vref

27

LOL

9

C17

C18

R3

R2

R1

C3

C4

Q1

LIL

8

External Input Left

(EIL)

RFR

7

37

38

39

40

VAL

VIL

10

16

11

TDA9853H

DETECTOR

AND

VOLTAGE CONTROLLED

AMPLIFIER

VOLUME

LEFT

CONTROL

C15

C16

C14

TC1L

13

TC2L

14

C13

BCL

OUTL

15

TONE

LEFT

CONTROL

TRANSCEIVER

SCL

SDA

DGND

MAD

FILTER

AND

REFERENCE

AUTOMATIC

VOLUME

AND

LEVEL CONTROL

INPUT

SELECT

SUPPLY

STEREO DECODER

composite

baseband

input

DEMATRIX

AND

MODE SELECT

L

+ R

L

− R

VAR

VIR

24

23

VOLUME

RIGHT

CONTROL

C10

C9

CP2

CP1

CPH

342

CER

43

2

4

C2

C11

TC1R

21

TC2R

20

C12

BCR

19

TONE

RIGHT

CONTROL

C6

C5

CMO

5

CSS

6

C7

LIR

26

LOR

25

External Input Right

(EIR)

C8

CAV

29

18

OUTR

C1

COMP

35

FDI

33

FDO

R4

Fig.1 Block diagram.