Sanyo EP58B specifications LA71730EM, LA70100M

Video and Audio Signal-Processing IC

LA71730EM

Overview

The LA71730EM is a video signal-processing system IC that handles VHS VCR formats other than SECAM. It supports the PAL (G, B, I, M, and N), NTSC-M, 4.4.3 NTSC, MESECAM, and NAP (G, B, I, M, and N) formats. Chip internal trimming is used to make this IC fully adjustment free.

This IC significantly reduces the number of peripheral components required, thus providing substantial cost savings in the signal- processing board.

Additionally, this IC also supports the NAP standard (NTSC to PAL conversion) that is now common in Europe and China.

Functions

Multi-format VHS VCR video signal record and playback processing

VHS VCR audio signal record and playback processing

I2C bus serial control

Package: QIP100EJ (14 20)

Block Diagram

OSD

INMAEMPHA

OUT 1.2kΩ 220P

6.8kΩ

130P2.7kΩ

18kΩ

10kΩ AUD-MUTE

18kΩ

10kΩ

DATASERIALIN

CLOCKSERIALIN

CSYNC OUT

VSYNC OUT

VideoOUT 1

OSDTo etc

VideoOUT 3

SCART2(DEC)To CHARA. INS.

VideoOUT 2

SCART1(TV)To

CANAL DECODER

OSD(PB)

INVideo4

FRONT

INVideo3 SCART2(DEC)

DECODER

INVideo5

SW1 FIXED ON IN1

REC-MUTE

IN - SW - HA

IN - ROT - C

IN - SW - RF

(1Vpp)

VPS OUT

CONTROL

REC/PB

SUB

for H.A.

Y-FM

TITLE

IN STANDBY MODE

4.7kΩ

+

DRV

DRV

DRV

+

+

+

GND

SW2 FIXED ON IN3

80

79

78

77

76

75

74

73

72

71

70

69

68

67

66

65

64

63

62

61

60

59

58

57

56

55

54

53

52

51

SW3 FIXED ON IN2

PHASE

PHASE

FM

FBC1 Y-VCC

Y-GND

AGC

FBC3

ALWAYS

AGC

FRAME

COMPEN

81

COMPEN

REC

AGC

W/D

NL

DET

R

FBC1

P

SERIAL

SYNC

6DB

TC2 VIDEO

DET

CLP5

5V CLP4

TC1

50

Video IN 2

fo-CTL

Q-CTL

FM-EQ

DETAIL

DECODER

AGC

CAR

SCART1(TV)

CLIP EMPHA

ENH

SEP

AMP

BAL

+

AGC BYPASS

4

VCA

82

P

R

P

49

HA GND

FM

PB_FM

P

R

P

R

3

CLP3

SW1

2

DET

AGC

EQ.

1

Y-DELAY

60B

Mute

CLP2

Video IN 1

COMP OUT

83

5

48

AGC NORMAL

AMP

SW2

4

REC

FM

PHASE

3

CLP1

TUNER

MAIN

R

60B

Mute

+

Chara

FM-EQ

MOD COMPEN

FBC3

Y/C PB_C

5

ENV DET

84

ENV

DE-EM

AMP

2

REG

47

INS.

P

SW3

1

2.2kΩ

DET

MIX

4V

REC CURRENT IS DECIDED

85

REC

WHEN SQPB, DOUBLE

FM

SUB

Y

C

PB_Y

46

BY THIS RESISTOR VALUE,

FM AGC2

F-TEST

PIC

+ 86

REF

EQ BYPASS

LIM

DEM

LPF

1/2

CTL

+

AND A TOLERANCE OF THE

REC

Y

VCA

FBC2

45

RESISTOR VALUE WHICH

FM AGC2

P

R

P

NC1/2

DET

WE RECOMMEND IS ±1%

87

FILT

Y-DELAY

PB H OUT 44

P

PB H OUT

EP (Hch)

Y-LPF

NL

REC:ON

R

88

43

R

Y.N.R

DeEM

FBC2

DELAYED Y_DELAY

+

Use of commonness is possible

Sub

89

R

CONV

SIGNAL

CCD 42

EP (Lch)

P

H

BPF2

P

R

NT/NT

VCC

90

L

C

BPF3

FRAME 41 GND

R

P

R

C-MAIN

LC89984/85

H.A.

KIL

ACC

BPF1

H.A VCC

91

D.L

1H/2H

CCD

40

VCC

Y

P

Main

B-UP

GND

REC

+

C-LPF

EQ

INV

D.L

92

HA

CONV

AMP

RD 39

PRE GND

FM AGC2

C

R

ACC

Fsc

DET

93

H

REC

R

D.L

C-DELAY

M/M

CLK

VCO

38

P

R

IN

SP (Hch)

L

BGA

CCD

EQ

SYNC SLICE PED.SIDE

+B(5V)

REC:ON

P

PB

LPF

COMB

94

R

R/PA

PB

BGA-A

2FSC-OUT 37 3.9kΩ +

Use of commonness is

P

AMP

possible

95

R

PB

DET

P/S AFC 36

4.7kΩ

BGA-B

SYNC

SP (Lch)

P

PB REC/EE

FILT

8200P

96

KIL

35

SECAM DET

560Ω

ATT

B.D.

KIL

97

A.GND

DET

PAL M DET

34

R/P-EQ

REC Vref

NAP

REC

LP/EP

SEPARATE

INVERTER

ALC

R

P

R

P

AFC

AE

98

(REC)

R/P-EQ

PB

33

R/P-EQ

47Ω

1kΩ

REC

PB/EE

PB/EE

COMMON

LINE

ALC

NAP

APC

99

AMP

100Ω

SEPARATE

1

2 3

BPF

REC

32

FE

2.2Ω

SP

EQ

AMP

DET

APC

3.58

REC:LP/EP

AUTO

AMP

CNC

NTSC

+

100

BIAS

PB:EP

SP/LP

LPF

Vref

MUTE

AUDIO

CHROMA

VCO

SLD

VXO2

VXO1

31

ACC

2.3V

HD-SW

C-VCC

CTL

A-VCCDET C-GND

DET

FRAME

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

1200P

330kΩ

+

+

+

+

GND

10kΩ

+

1.2kΩ

27kΩ

12kΩ

5.6kΩ

1.2kΩ

Ω8.2kPAL-GBI

2SC3331

10kΩ

+

2kΩ

22kΩ

1200P

+ 0.01∝F

LINEOUT

12kΩ

AudioIN1

AudioIN2

AudioIN3

OUTCREC:LOW IN)C(SECAM OUTPB:FM OUT)FM(SECAM

+

OUTPB:C IN)C(SECAM

+

PAL-MN

1kΩ

2SA1318

R/P

180Ω

2SC3331

+

VCR SECAM Chrominance

Signal-Processing IC

LA70100M

Overview

The LA70100M is a SECAM VCR chrominance signal processing IC. It integrates bandpass filter, SECAM discrimination, and Bell filter circuits to significantly reduce the number of peripheral components required and can supports adjustment-free designs.

Functions

Integrates all required filters on a single chip

Automatic adjustment of the Bell filter f0 frequency

Built-in SECAM discrimination circuit

Package: MFP30SD (375mil)

Block Diagram

C.SYNC IN

SECAM HI

VCC

VCC

PB OUT

RP CTL

REC IN

5V

5V

2.2∝F

+

2200pF

2200pF

0.47∝F

+

0.01∝F

0.01∝F

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

SECAM DET SENS

SYNC-IN

SECAM DET OUT

DET C

S/H C2

S/H C1

2

CC

NoConnect

S/H C3

BELL MONII4

LIM EXC

PB-OUT

REC-IN

CC

REC

V

V

Buf

/PB

fer

PB-H

SECAM

PB

DET

REC

MUTE

SYNC GATE GEN

4.3MHz

to MUTE

/V-SEP

BELL

2.2MHz

PB

to SYNC GATE

ANTI BELL

BGR

TRAP

4.3MHz

SYNC

GEN

to PB AGC

MODE

BPF

GATE

to MUTE

to REC KILLER

CTL

REC

CONTROL

2.2MHz

2.2MHz

4.3MHz

LIM

LOGIC

X2

X2

BPF

TRAP

BPF

PB

CHOROMA

1.1MHz

REC

SYNC

1/4

AFC

Filter Adj.

GATE

1.1MHz

1.1MHz

BPF

2.2

PB

BELL

ANTI BELL

4.43MHz

PB

BELL

REC

MHz

VCO

ANTI BELL

AFC FILTER

TEST MODE

VCO MONIT

BELL MONII1

REC

AGC

AGC

BGP DELAY

NoConnect

MUTE

AGCFILTER

Buf

AMP

DET

Buf

REG

fer

4.3MHz BELL

fer

4.0V

MODE

CLKIN

BAL

GND2

GND

FO CTL

RECOUT-

PB-IN

FO CTL

REG

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

+

0.1∝F

0.01∝F

+

MODE CTL

+

BGP DELAY CTL

4.3MHz BELL FO CTL

4.43MHz∝0.01F

0.01∝F

1kΩ

1∝F

H : +400n

∝1F

H : +80k

REC-C OUT

PB-C IN

0.47∝F

M : ±0n

M :

0k

CW

L : -400n

L

: +40k

MODECTL

*PB ONLY

H:SECAM

OPEN :AUTO DET

L:EXCEPT SECAM

55 SANYO TV . VCR SANYO TV . VCR 56