Sanyo EP58B User Manual download pdf (Page 29)

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SANYO TV . VCR SANYO TV . VCR

LA71730EM

LA70100M

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

30 29 28 27 26 25 24 23 22 21 20 19 18 17 16

Ω

0.01

0.1

0.47

0.01

0.47

2.2

2200pF

+ +

MODE CTL

MODECTL

H:SECAM

OPEN:AUTO DET

L:EXCEPT SECAM

H : +400n

M :

L : -400n

H : +80k

M : 0k

L : +40k

*PB ONLY

4.43MHz

REC-C OUT

REC IN

RP CTL

PB OUT

SECAM HI

C.SYNC IN

PB-C IN

MODE

CLK IN

AFC FILTER

BGP DELAY

NoConnect

BAL

GND2

GND

TEST MODE

VCO MONIT

BELL MONII1

BELL MONII4

S/H C3

S/H C1

S/H C2

DET C

SECAM

DET

OUT

SYNC-IN

SECAM

DET

SENS

REC-OUT

PB-IN

AGC FILTER

FO CTL REG

2.2

MHz

REC

REC-IN

PB-H

PB-OUT

LIM EXC

to MUTE

to SYNC GATE

to PB AGC

to REC KILLER

to MUTE

Filter Adj.

BELL

CHOROMA

1.1MHz

ANTI BELL

REC

AGC

DET

AGC

AMP

REG

4.0V

REC

MUTE

Buf

fer

Buf

fer

Buf

fer

1.1MHz

BPF

4.3MHz

BPF

1.1MHz

BELL

ANTI BELL

4.3MHz

BELL

ANTI BELL

1/4

SYNC

GATE

LIM

4.3MHz

BPF

2.2MHz

TRAP

2.2MHz

TRAP

X2X2

2.2MHz

BPF

SYNC

GATE

REC

/PB

SECAM

DET

SYNC GATE GEN

/V-SEP

CONTROL

LOGIC

MODE

CTL

AFC

4.43MHz

VCO

4.3MHz BELL

FO CTL

BGR

GEN

Ω

10k

Ω

2.2

Ω

22k

Ω

0.01

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 20 21 22 23 24 25 26 27 28 29 30

7980

100

78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 58 57 55 53 52 51

2SC3331

2SA1318

R/P

560

Ω

SP (Lch)

SP (Hch)

+B(5V)

Ω

Use of commonness is

possible

EP (Lch)

EP (Hch)

Use of commonness is possible

H.A V

REC CURRENT IS DECIDED

BY THIS RESISTOR VALUE,

AND A TOLERANCE OF THE

RESISTOR VALUE WHICH

WE RECOMMEND IS

PHASE

COMPEN

fo-CTL

REC-MUTE

CONTROL

for H.A.

COMP OUT

ENV DET

REC/PB

Y-FM

2.2k

Ω

1.2k

Ω

220P

2.7k

Ω

130P

6.8k

Ω

18k

Ω

10k

Ω

HA-SW-IN

C-ROT-IN

SERIAL DATA IN

RF-SW-IN

C SYNC OUT

CHARA. INS.

AUD-MUTE

4.7k

Ω

27k

Ω

1.2k

Ω

330k

Ω

12k

Ω

10k

Ω

12k

Ω

1.2k

Ω

8.2k

Ω

5.6k

Ω

MA IN EMPHA

OUT

10k

Ω

18k

Ω

SERIAL CLOCK IN

V SYNC OUT

Video OUT 1

To OSD etc

Video OUT 3

To SCART2(DEC)

Video OUT 2

To SCART1(TV)

Video IN 5

OSD(PB)

Video IN 4

FRONT

Video IN 2

SCART1(TV)

Video IN 3

SCART2(DEC)

DRV DRV DRV

+ +

OSD

CANAL DECODER

SUB

TITLE

DECODER

VPS OUT

(1Vpp)

Video IN 1

TUNER

GND

IN STANDBY MODE

SW1 FIXED ON IN1

SW2 FIXED ON IN3

SW3 FIXED ON IN2

PB H OUT

GND

SYNC SLICE PED.SIDE

3.9k

Ω

4.7k

Ω

8200P

1200P

180

Ω

LINE OUT

Audio IN1

Audio IN2

Audio IN3

REC:LOW C OUT

(SECAM C IN)

PB:FM OUT

(SECAM FM OUT)

PB:C OUT

(SECAM C IN)

GND

PAL-GBI

PAL-MN

3.58

NTSC

LP/EP

PB/EE

A.GND

REC

Vref

REC:LP/EP

PB:EP

100

Ω

PB/EE

R/P-EQ

SEPARATE

(REC)

SP/LP

R/P-EQ

COMMON

R/P-EQ

SEPARATE

PB REC/EE

CHROMA

A-V

DET C-GND C-V

AUDIO

HD-SW

CTL

ACC

DET

FRAME

P/S AFC

FILT

2FSC-OUT

VCO

FRAME

PB H OUT

CCD

GND

CCD

FBC2

DET

VCA

DET

DELAYED

SIGNAL

NT/NT

LC89984/85

M/M

Fsc

CLK

C-MAIN

REC

BGA

BGA-A

BGA-B

C-DELAY

R/PA

PHASE

COMPEN

Q-CTL

HA GND

AGC

WHEN SQPB,

EQ BYPASS

REC

FM AGC2

REF

REC

FM AGC2

FILT

PRE GND

REC:ON

H.A.

REC:ON

FBC1

DET

Y-V

Y-GN D

AGC BYPASS

AGC NORMAL

PB_Y

PB_C

AGC

TC2

FBC3

DET

ALWAYS

FRAME

59 56 54

AGC

REC

FM-EQ

REC

FM-EQ

MOD

W/D

CLIP

EMPHA

PHASE

COMPEN

DOUBLE

LIM

PB_FM

EQ.

DETAIL

ENH

MAIN

DE-EM

Y-DELAY

SUB

LPF

DEM

ENV

DET

REC

FM AGC2

AUTO

BIAS

REC

AMP

INVERTER

ATT

LPF

Vref

2.3V

LINE

AMP

MUTE

ALC

DET

123

PRPR

VCO

SLD

CNC

NAP

BPF

NAP

KIL

B.D.

REC

APC

REC

AFC

KIL

DET

SYNC

DET

VXO2 VXO1

SECAM DET

PAL M DET

1H/2H

D.L

Y_DELAY

INV

D.L

COMB

AMP

BPF1

ACC

DET

CCD

LPF

FBC2

SW1

Mute

SW2

SW3

REG

VIDEO

AGC

CLP5

CLP4

60B

AMP

60B

AMP

VCA

AGC

TC1

CAR

BAL

CLP3

CLP2

CLP1

SYNC

SEP

6DB

AMP

Chara

INS.

1/2

FBC3

DeEM

NC1/2

PIC

CTL

Y/C

MIX

BPF2

BPF3

Sub

CONV

SERIAL

DECODER

Y.N.R

Y-DELAY

Y-LP F

C-LPF

KIL

B-UP

AMP

Main

CONV

ALC

F-TEST

BGP DELAY CTL

4.3MHz BELL FO CTL

Block Diagram

Overview

Functions

Overview

Functions

Video and Audio Signal-Processing IC

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.

VCR SECAM Chrominance

Signal-Processing IC

Integrates all required filters on a single chip

Automatic adjustment of the Bell filter f0 frequency

Built-in SECAM discrimination circuit

Package: MFP30SD (375mil)

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.

Multi-format VHS VCR video signal record and playback processing

VHS VCR audio signal record and playback processing

C bus serial control

Package: QIP100EJ (14 20)

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Sanyo EP58B User Manual Page 29

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