Sanyo EP93F manual LV25200M Under, LA2655V V Product Product

Bus Control Tuner IC

LV25200M Under

development

Overview

The LV25200M integrates an optimal reception system for varying reception conditions plus AM NC functions that support reception worldwide. It also reduces the number of external components required.

Clear Surround Controlontrol ICIC IncludesIncludes PlusPlus SoundSound AlgorithmAlgorithm

LA2655VV ProductProduct	❋❋ :: UseUse ofof conditionalconditional productsproducts requiresrequires
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Overview

The LA2655V is a sound field recreation IC that is optimal for audio equipment and that includes the Plus Sound algorithm.

Functions

■FM front end

■Multiplex

■PLL

■FM IF

■AM upconversion

■Autoalignment

■Noise canceller

■FM/AM switch

■MRC

❋: CCB is SANYO's original bus format.

All bus addresses are managed by SANYO for this format.

Block Diagram

Features

FM

■Image rejection mixer adopted

■Built-in IF band filter

■Supports reception in all areas worldwide

■Crystal oscillator: 20.5 MHz

PLL

■Supports high-speed locking

■Serial bus control circuit (SANYO CCB bus)

AM

■Increased mixer dynamic range, improved noise filter

■Increased IF amplifier dynamic range, improved noise filter

■Built-in noise canceller

MC, MPX, and MRC

■Built-in MPX VCO (Obviates the need for a ceramic oscillator)

■Package: QFP80 (14 14 mm)

The LA2655V is optimal for use in radio/cassette players, personal computers, TV sets, and other consumer audio products including mini-compo systems.

The Plus Sound algorithm corrects for both delays and attenuations of the high and low frequency signals due to the characteristics of the speakers and creates audio with extreme clarity.

Functions

■Plus Sound algorithm

■Clear Surround signal processing

■Variable clear level effect (using external components)

■Package: SSOP20 (225 mil)

10K

10K

C57

R57

R56

4.7U+

+

C

3.3U

C50B

3.3U

1U

+

R55

C51

0.22∝F

10U

C47

8200p

C46 R43

C43

C42

68K

AM

IN-IF

AGC-RF BYPASS

-W-AMAGC

C56

10K

TESTPLL

OUT-ROS 0.02U Undesire

out-Det

+

MOD

R47 0.1∝F

0.47∝F

0.22∝F

AGCIF

-PILOTDET

AMCL

TESTPLL

V

INDEX

IN-NC

OUTDET

VREF

INAFC

MUTE DRIVE

INMRC

R41

C59

C50

+

1U

1U

10K

3300p

450K

+

C49

C48

1000p

CC

C44

C41

0.022∝F

60

59

58

57

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

C40

C61

AM

rey2.7V

AFC

40 VSM-2

10.7MS3

IF-IN2 61

AM low cut

QD

N amc

R40

FM-IF-IN2

62

AM IF AMP

det

+

Mute

Time

39

MRC-OUT C39

+

C62

0.022∝F

-

AMP

1U

CF10.7

MIX

AM/FM C38

FM-IF-IN

63

+

38

0.22U

∝

+

+

BPF

VSM

1M

0.022 F

AM RF-AGC

NC in

Gtime

-

NOISE R37

64

-

-

delay

37

C58

IF AGC

s-meter

Mute

Ccont

AGC C37

0.47U

NOISE10K

C36

1ST-IF-OUT

65

MIX

36 SENC R381000p

AM-MI 2

66

35 CHCC

C35

L_MI

2 OUT

N AGC

R66

10∝F

+ Vref

reg4.9V

LPF

+

AGC

MPX

2200p

R58

L_AM3

67

RF AGC

BUFF

34

C34

75

C67

4.9V

W AGC

-

PLL-IN

620

L_AM4

AM-MI

2-IN

AM NC 0.47∝F

68

HPF

Trig

Gate

33

0.022∝F

Triger OUT

AM-MI 2 69

anp

FET

32 GND

C69

Phase

19K<90

FM cut

CPH5905

+

BYPASS

select

R31

3K

P-DET

MPX VCC 19K<0

RF-DAC 70

DAC

31

0.47∝F

Lodins coil

8bit AD

C35

0.022∝F IF-IN

ANT d

TRIG

+

C30

1U

0.022∝F

100K

47U

C71

BIAS 71

FF

38K<0

30

10.7MS3

IN3-1

IN3-3

C29

1U

72

P-CAN

HCC

29

1SV234

Pin_D

470

FM1stIF-IN

HCC R29

15K

R73

CF10.7 TEST

IN3-2

IN3-4

SNC

82K

C78

AM-ANT-D 73

Keyed AGC

28 SNC R280.22∝F

N AGC

Sub

C73

0.022∝F

C74

30P

74

27

C27

N-AGC

W AGC

decorder

VDD

0.022∝F

L_MIX

MIX-OUT 75

IN1/IN2

bus

MATRIX

26

R-OUT

C26

32K

C75

OSC BUFFER

∝

R101

76

orogramable

ohase

reference

25

L-OUT0.015

F

R102

R70

30

MIX-OUT

swallow

C25

330

counter

divider

detector

counter

0.015∝F

C105

D

2.2k C106

L104

0.025∝F

0 FE-VCC

77

1/10.1/8div

24 X' TAL GND

2200P

C77

2200P

Pin

0.075∝F

R77

0.022∝F

MIX

1/6.1/4

23

X TAL IN

C23

L102

C102

L103

SVC203

FM-MIX-IN 78

AM

3K

CP1

SD Stereo

18pF

Pin_D

1000P

R8

6P

0.047

∝

FM-MIX

79

IQ MIX

div

OSC

22

20.5M

C22

0.47∝F

F

Vref 3V

C79

IN

Vo1.

18pF

C101

C103

FM-MIX

ANT

D

RF AGC

X TAL OUT

18P

C104

1000P

IN 80

500K

21 X' TAL V

L101

1P

FM

OSC

12P

C105

CC

0.22∝F

C80

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

ANT D

RF AGC

GND AM-MIX

IN2

OSC-GND 2p

FM OSC

3V

TEST

sep adj.

GND

CE

DI

CL

DO100K

C107

C109

R103

3p

C11B

C12B

1 F

F0.22∝

C6

C7

C12 C15

+

100

+C2

C4

0.022∝F

L_OSC

C10AF0.039∝

R11

CPAM

4700p

0.47∝F

p11 up

p11 up

∝

VCD_OSC

2200P

0.01∝F

100K

R20

R13

30K

2.4K

0

0

0

0

8V

R12

SD Stereo IND.

Lch

Rch AM-NC RDS-OUT

C9A

VCC

6.8K

TEST

OUT

OUT Gate-OUT

1000p

C8

220pF

GND

DO

0

0

TEST

DI

0

NC

SK

0

VDD

CS

30

EEPROM

CS

CE

DI

CL

DO

DO

VCC2 VCC

TUNER EEPROM

5V

5V

❋:This product is subject to change without notice for improvement. When considering the use of this product, first refer to the latest SANYO "Semiconductor News" publication related to this device and finally refer to the latest specifications for the device.

Block Diagram

VCC

Lch-IN

Lch-OUT

C7

2200pF

R4

+

C11

4.7∝F

C10

C12

C13

∝

C

C

+ 1∝F

R

1 F

+

4.7∝F

2200pF

82000pF

N.C

VCC

AGND

L-IN

LC1

LV1

LC2

LC3

LV2

L-OUT

20

19

18

17

16

15

14

13

12

11

A

Brightness control

SW

(L-ch)

B

On/off control

Brightness control

A

(R-ch)

BSW

1

2

3

4

5

6

7

8

9

10

CONT1

GND

VREF

R-IN

RC1

RV1

RC2

RC3

RV2

R-OUT

C

+

C

+ C

R

C5

C

+ 1∝F

4.7∝F

1∝F

2200pF

82000pF

C

R2

2200pF

L/H

Rch-IN

Rch-OUT

37 Car Audio 38 Car Audio