Sanyo EP58B - Manual (Page 29)

55 56 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
1k
Ω
0.01
µ F 0.01
µ F
1 µ F
1
µ F
0.01
µ F
0.1
µ F
0.47
µ F
0.01
µ F
0.01
µ F
0.47
µ F
2.2
µ F
2200pF 2200pF
+
+ +
+ +
MODE CTL
MODECTL
H:SECAM
OPEN :AUTO DET
L:EXCEPT SECAM
H : +400n
M :
± 0n
L : -400n
H : +80k
M : 0k
L : +40k
*PB ONLY 4.43MHz
CW
REC-C OUT
REC IN RP CTL PB OUT SECAM HI C.SYNC IN
PB-C IN
VCC
5V
VCC
5V
MODE CLK IN AFC FIL
TER
BGP
DELA
Y
NoConnect
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 V CC
V CC
2
REC-OUT PB-IN AGC FIL
TER
FO CTL REG
2.2
MHz
REC
REC
REC
PB
PB
PB
REC-IN
PB-H
PB-OUT LIM EXC
to MUTE
to SYNC GATE
to PB AGC
to REC KILLER
to MUTE
Filter Adj.
BELL
PB
CHOROMA
1.1MHz ANTI BELL
REC
AGC
DET AGC
AMP
REG
4.0V
REC
MUTE
PB
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
X2 X2 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
+
+
+
+
+
+
+
+
+
+
1k Ω
1k Ω
2k Ω 10k
Ω
2.2
Ω
22k
Ω 0.01 µ F
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
79 80
50
49
48
47
46
45
43
42
41
40
39
38
37
36
35
34
33
32
31
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
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
2SC3331 2SA1318 R/P
560 Ω
AE
FE
SP (Lch)
SP (Hch) +B(5V)
47 Ω
Use of commonness is
possible
EP (Lch)
EP (Hch)
Use of commonness is possible
H.A VCC
+
+
+
+
REC CURRENT IS DECIDED
BY THIS RESISTOR VALUE,
AND A TOLERANCE OF THE
RESISTOR VALUE WHICH
WE RECOMMEND IS
± 1%
81
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
DA
TA 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
V ideo OUT
1
To O SD etc
V ideo OUT
3
To SCAR
T2(DEC)
V ideo OUT
2
To SCAR
T1(TV)
V ideo IN 5 OSD(PB) V ideo IN 4 FRONT
Video IN 2
SCART1(TV)
V ideo IN 3 SCAR
T2(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
44 PB H OUT
GND
SYNC SLICE PED.SIDE
3.9k Ω
4.7k
Ω
8200P
1200P
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)
19
+
GND
PAL-GBI
PAL-MN
3.58
NTSC
LP/EP
PB/EE
A.GND
SP
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-VCC DET C-GND C-VCC
AUDIO HD-SW CTL ACC DET FRAME
P/S AFC FILT
2FSC-OUT
VCO
RD
FRAME
PB H OUT
CCD
GND
CCD
VCC
FBC2 DET
VCA
DET
DELAYED
SIGNAL
NT/NT
LC89984/85
M/M
Fsc CLK IN
C-MAIN
REC
BGA
PB BGA-A
PB BGA-B
C-DELAY
PB R/PA
P
P
P
R
R
R
R
PHASE COMPEN Q-CTL
HA GND
FM AGC
P
P R
WHEN SQPB, EQ BYPASS
REC FM AGC2 REF
REC
FM AGC2 FILT
P
P
R
R
HA PRE GND
REC:ON
H.A. VCC Y
C
REC:ON
Y
C
FBC1
FBC1 DET Y-VCC Y-GND
AGC BYPASS
AGC NORMAL
Y C
P
PB_Y
PB_C
AGC TC2 FBC3 DET ALWAYS 5V FRAME
2 1
59 56 54
R
P R FM AGC
REC FM-EQ
REC FM-EQ FM MOD
W/D CLIP NL EMPHA
PHASE COMPEN
DOUBLE LIM
PB_FM
EQ.
DETAIL ENH
MAIN DE-EM
Y-DELAY
SUB LPF FM DEM
P R
ENV DET
P
P
R
R
H L
REC FM AGC2 +
H
L
AUTO
BIAS
REC
AMP
EQ
AMP
INVERTER
ATT
LPF Vref 2.3V
LINE AMP
MUTE
ALC DET 1 2 3
P R P R
VCO SLD CNC
NAP BPF
NAP
KIL B.D.
REC APC
PB APC
REC AFC
KIL DET
SYNC DET
VXO2 VXO1
SECAM DET
PAL M DET
P
R
1H/2H
D.L
Y_DELAY
INV
D.L
EQ
D.L
EQ
COMB AMP
BPF1 ACC
ACC DET
CCD
LPF
FBC2
4 3 2 1 SW1 Mute
Mute
5 4 3 SW2
5 SW3 REG 4V
VIDEO AGC CLP5 CLP4
60B AMP
60B AMP
VCA
AGC TC1
CAR
BAL
CLP3
CLP2
CLP1
P R
P R
P R
P
R
SYNC SEP 6DB AMP
Chara INS.
1/2
FBC3
NL DeEM
NC1/2
PIC CTL
Y/C MIX
BPF2
BPF3
Sub CONV
SERIAL DECODER
Y.N.R
Y-DELAY
Y-LPF
C-LPF
KIL
B-UP AMP Main CONV
ALC
F-TEST
BGP DELAY CTL 4.3MHz BELL FO CTL
Block Diagram
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
I
2 C bus serial control
Package: QIP100EJ (14 20)